Mitsuboshi DIN Timing Belt Design Manual

Mitsuboshi DIN Timing Belt Design Manual

V844-E

ENGLISH

Design Manual

V-Belt

DIN

Belt Application Designing Program can be downloaded at:

https://www.mitsuboshi.co.jp/english/sien/sien_dl.html

Safety Precautions

Please read all the warnings!

Please take all necessary precautions when using our products. Also, please review relevant product catalog and design documents, etc.

Significances of safety precautions are categorized as follows:

Signs

M e a n i n g s

Danger

Imminently causing death or severe injury to the user who misuses products.

Warning

Possibly causing death or severe injury to the user who misuses products.

Caution

Possibly causing personal injury or property damage if misused.

Power Transmission Products

Use

Danger

If you expect that a belt will fail and idle, free-run, or stop the system, thus causing a fatal or severe accident, please provide an extra safety device.

Do not use a belt as a lifting or towing tool.

Warning

Caution

If you expect that static electricity will come from the power transmission belt system, thus causing fire or malfunction of the controller, use an antistatic belt and set a neutralization apparatus in the system.

Do not use a belt as an insulator. Contact us for information on insulation properties, which vary in belt type.

For a belt that touches food directly, use one that complies with the applicable food hygiene law of your country.

Do not modify a belt, or its quality and performance could deteriorate.

Function & Performance

Caution

Do not use a belt beyond its capacity or for an application other than that specified by the catalog, design documents, etc. This can cause premature failure of the belt.

If water, oil, chemical, paint, dust, etc. sticks to a belt or pulley, its power transmission could deteriorate and the belt may fail.

A cogged belt makes louder noise during high-speed rotation. If this occurs, use a soundproof cover.

Storage & Transportation

Warning

Caution

To store a heavy belt, use a suitable jig or stopper to prevent accidents such as belt toppling or tumbling.

Use suitable equipment to carry/handle a heavy belt or pulley. Otherwise, back injury may result.

Do not put weight on or bend a belt forcibly to carry or store it. Otherwise, it will produce defects or scratches to the belt, resulting in damage.

Store the belt in low humidity and a temperature range of -10℃ to 40℃. Do not expose belts to direct sunlight.

Mounting & Operation

Danger

Caution

Install a safety cover over rotating components including belt/ pulley. Otherwise, hair, gloves and clothing can become entangled in the belt/ pulley. If a belt/pulley breaks, fragments may cause injuries.

Take the following precautions to maintain, inspect and replace a belt.

1)Turn off power and wait until the belt and pulley have stopped completely.

2)Secure machinery so that it may not move during belt removal.

3)Use caution : Do not unintentionally turn on power.

Use the same type of belts or pulleys per OEM specification. Use of a different type may cause premature failure.

Misalignment of the pulleys can damage the belt and result in flange failure. Make proper adjustments to system.

Loosen the belt tension when changing belts. Do not force or stretch a belt over the flange. Do not use a screw driver or other sharp objects into when replacing the belt as this will result in damage.

Apply the appropriate belt tension as specified by the relevant catalog and design documents, etc. Inappropriate tension could result in damage of the belt and shaft.

Take the following precautions to modify the pulley in use:

1)Remove burrs and maintain proper pulley angle; 2)Secure accurate dimensions after modification;

3)Maintain the pulley strength after modification.

Before assembling the flange with the pulley, check for foreign materials between the pulley and flange. Fasten the flange with a caulking tool and so on. Inappropriate installation could result in the flange coming off.

Handling of Used items

Caution

Do not burn belt, or hazardous gas could be produced.

CONTENTS

1.Properties

1. Belt Construction ……………………………………………………………………………… P1-3

2. Product Classification …………………………………………………………………… P1-4~P1-5

Classical V-Belts for DIN 2215 / ISO4184

Maxstar Wedge V-Belts for RMA / MPTA

Narrow V-Belts for DIN 7753 / ISO4184

Multi V-Belts

Double V-Belts

Perforated Open-End V-Belts

3. Standard Belt Sizes …………………………………………………………………… P1-6~P1-15

Classical V-Belts for DIN 2215 / ISO4184, sections Z, A, B, C, D, E, ZX, AX, BX, CX ………………………… P1-6~P1-9

Cross section Dimension for Classical V-Belts for DIN ……………………………………………………………………P1-10

Maxstar Wedge V-Belts for RMA / MPTA, sections 3V, 5V, 8V, 3VX, 5VX ……………………………………………… P1-11

Narrow V-Belts for DIN 7753 / ISO4184, sections SPZ, SPA, SPB, SPC, SPZX, SPAX, SPBX, SPCX ………………P1-12

Cross section Dimension for Narrow V-Belts for DIN & Maxstar Wedge V-Belts for RMA / MPTA ……………………P1-13

Double V-Belts for DIN 7722 / ISO5289, sections AA(HAA), BB(HBB), CC(HCC) ………………………………………P1-14

Perforated Open-End V-Belts …………………………………………………………………………………………………P1-15

4. Standard Pulley Sizes …………………………………………………………………P1-17~P1-18

Pulley for Classical V-Belts & Narrow V-Belts for DIN ………………………………………………………………………P1-17

Pulley for Maxstar Wedge V-Belts for RMA / MPTA …………………………………………………………………………P1-18

1

Properties

2.Design

Design process for Classical V-Belts / Narrow V-Belts …………………………… P2-3~P2-8

Calculation example for Classical V-Belts / Narrow V-Belts …………………………… P2-9

Design process for Maxstar Wedge V-Belts ………………………………………P2-10~P2-15

Calculation example for Maxstar Wedge V-Belts …………………………………P2-16~P2-18

Formulas for V-Belt drive design ……………………………………………………P2-19~P2-20

Power Rating Table ……………………………………………………………………P2-21~P2-41

Drive Selection Table …………………………………………………………………P2-43~P2-62

2

Design

3.Reference

Length measurement ……………………………………………………………………… P3-3~P3-4

Tensioning …………………………………………………………………………………… P3-5~P3-7

Use of idlers………………………………………………………………………………………… P3-8

Quarter-Turn Drives ……………………………………………………………………………… P3-9

V-Flat pulley drives ……………………………………………………………………………… P3-10

Multi V-Belts………………………………………………………………………………… P3-11~P3-12

Storage and Handling of V-Belts ………………………………………………………P3-13~P3-14

Request for belt design ………………………………………………………………………… P3-15

Global Factories & Sales Offices ……………………………………………………………… P3-16

3

Reference

1-1

1

.Properties

Belt Construction

Product Classification

Standard Range

V-Belt pulleys

Belt construction

Wrapped V-Belts

"Wrapped" means that the V-Belt core is protedted by cover fabric made of cotton or polyester.

The cover fabric is coated with rubber to reinforce the wear resistance.

Cover fabric

Adhesion rubber

Cord

Compression rubber

1

Properties

Fig. 1-1

Raw Edge V-Belts

Raw Edge V-Belts have no fabric on the belt sides.

The special rubber compound ensures greater wear resistance than Wrapped V-Belts.

Top fabric

Adhesion rubber

Cord

Compression rubber

Fig. 1-2

1-3

Product Classifi cation 2

Product Classifi cation

Classical V-Belts for DIN 2215

Classical V-Belts are most widely used power transmission belts.

Economical and easily obtained for replacement.

Sections

Wrapped type : Z / A / B / C / D / E

Raw Edge type : ZX / AX / BX / CX

Working temperature

Wrapped type : -40 ~ +70℃

Raw Edge type : -30 ~ +90℃

Electrical conductivity

Suitable for ISO 1813

Fig. 1-3

1

Properties

Maxstar Wedge V-Belts for RMA / MPTA

Maxstar Wedge V-Belts have double power transmission capacity of classical V-Belts due to greater wedge effect. It features high speed transmission of maximum 40 m/sec., energy saving, and compact design.

Sections

Wrapped type : 3V / 5V / 8V

Raw Edge type : 3VX / 5VX

Working temperature

-30 ~ +90℃

Electrical conductivity

Suitable for RMA IP-3-3

Fig. 1-4

Narrow V-Belts for DIN 7753 / ISO 4184

Narrow V-Belts enable space saving, high speed drive, and reduce the cost of operating and maintenance.

It features oil / heat resistance and electrical conductivity.

Sections

Wrapped type : SPZ / SPA / SPB / SPC

Raw Edge type : SPZX / SPAX / SPBX / SPCX

Working temperature

-30 ~ +90℃

Electrical conductivity

Suitable for ISO 1813

Fig. 1-5

1-4

2 Product Classifi cation

Multi V-Belts

Multi V-Belts are made up of two or more standard V-Belts connected together at the top of the belts. Multi V-Belts have the advantage of preventing the belts from turning over or getting thrown off the drive even when belt vibration occures.

Sections

Wrapped type : B / C / D

3V / 5V / 8V

SPB / SPC

Raw Edge type : BX / CX

3VX / 5VX

Fig. 1-6

1

Properties

Double V-Belts

Double V-Belts are recommended for serpentine drives where the power must be transmitted by both the top and the bottom of the belts.

Excellent fl exibility in both directions.

Sections

AA / BB / CC

Fig. 1-7

Perforated open-end V-Belts

Perforated open-end V-Belts are designed for easy installation with metal fastners and a screwdriver.

These belts are recommended for temporary use or when installation of the standard V-Belts is diffi cult.

Sections

Z / A / B / C

1-5

Fig. 1-8

Standard Range 3

Standard Belt Sizes

Classical V-Belts for DIN 2215 / ISO 4184

Z/10, ZX A/13, AX

10

6

13

Belt indication

A 64

Belt indication

Z 50

9

Cross section

Belt Code(inch)

Table 1-1

Cross Section

Belt Code(inch)

Z-Section

Inner length

Li (mm)

790

820

840

865

890

915

940

965

990

1016

515

530

560

585

610

630

660

685

710

730

765

1041

1060

1090

1120

1140

1165

1194

1225

1250

1270

Belt Code

36

37

38

39

40

31

32

33

34

35

20

21

22

23

24

25

26

27

28

29

30

46

47

48

49

50

41

42

43

44

45

Belt Code

Size range: 20" ~ 93"

59

60

61

62

63

51

52

53

54

55

56

57

58

64

65

66

67

68

69

70

46

47

48

49

50

41

42

43

44

45

36

37

38

39

40

31

32

33

34

35

20

21

22

23

24

25

26

27

28

29

30

: Available size for Raw Edge Cogged V-Belts ZX & AX

Datum length

Ld (mm)

812

842

862

887

912

937

962

987

1012

1038

537

552

582

607

632

652

682

707

732

752

787

1063

1082

1112

1142

1162

1187

1216

1247

1272

1292

Inner length

Li (mm)

1300

1320

1350

1375

1400

1422

1450

1475

1500

1525

1550

1575

1600

1625

1650

1676

1700

1725

1750

1775

1041

1060

1100

1120

1143

1168

1200

1220

1250

1270

787

813

838

864

889

914

940

965

990

1016

508

535

560

585

610

630

660

686

710

730

767

A-Section

Datum length

Ld (mm)

1330

1350

1380

1405

1430

1452

1480

1505

1530

1555

1580

1605

1630

1655

1680

1706

1730

1755

1780

1805

1071

1090

1130

1150

1173

1198

1230

1250

1280

1300

817

843

868

894

919

944

970

995

1020

1046

538

565

590

615

640

660

690

716

740

760

797

Belt Code

105

108

110

112

115

118

120

122

125

128

130

135

140

97

98

99

100

102

92

93

94

95

96

150

160

170

180

87

88

89

90

91

82

83

84

85

86

71

72

73

74

75

76

77

78

79

80

81

Size range: 20" ~ 360"

Inner length

Li (mm)

2667

2743

2800

2845

2921

3000

3048

3100

3175

3250

3300

3425

3550

2337

2360

2388

2413

2438

2464

2500

2515

2540

2591

3810

4064

4318

4572

2083

2110

2134

2160

2180

2210

2240

2260

2286

2310

1800

1825

1854

1880

1900

1930

1956

1980

2000

2032

2060

Datum length

Ld (mm)

2697

2773

2830

2875

2951

3030

3078

3130

3205

3280

3330

3455

3580

2367

2390

2418

2443

2468

2494

2530

2545

2570

2621

3840

4094

4348

4602

2113

2140

2164

2190

2210

2240

2270

2290

2316

2340

1830

1855

1884

1910

1930

1960

1986

2010

2030

2062

2090

1-6

1

Properties

1

Properties

3 Standard Range

Standard Belt Sizes

Classical V-Belts for DIN 2215 / ISO 4184

B/17, BX

17

Belt indication

B 59

11

Cross Section

Belt Code(inch)

Belt Code

64

65

66

67

68

69

70

71

59

60

61

62

63

72

73

74

54

55

56

57

58

49

50

51

52

53

44

45

46

47

48

36

37

38

39

40

41

42

43

31

32

33

34

35

25

26

27

28

29

30

: Available size for Raw Edge Cogged V-Belts BX

Inner length

Li (mm)

1500

1525

1550

1575

1600

1625

1650

1675

1700

1725

1750

1775

1800

1825

1850

1880

1250

1275

1300

1320

1350

1372

1400

1425

1450

1475

915

940

965

991

1016

1040

1060

1090

1120

1150

1175

1200

1215

630

660

686

710

735

762

785

813

838

865

889

Datum length

Ld (mm)

1543

1568

1593

1618

1643

1668

1693

1718

1743

1768

1793

1818

1843

1868

1893

1923

1293

1318

1343

1363

1393

1415

1443

1468

1493

1518

958

983

1008

1034

1059

1083

1103

1133

1163

1193

1218

1243

1258

673

703

729

753

778

805

828

856

881

908

932

B-Section

Belt Code

120

122

125

128

130

132

135

138

140

145

150

155

160

99

100

102

105

106

108

110

112

115

118

94

95

96

97

98

86

87

88

89

90

91

92

93

81

82

83

84

85

75

76

77

78

79

80

Size range: 23" ~ 660"

Inner length

Li (mm)

3048

3099

3175

3250

3300

3350

3425

3500

3550

3675

3810

3937

4065

2515

2540

2600

2667

2700

2750

2800

2845

2921

3000

2200

2210

2240

2260

2286

2300

2337

2360

2388

2413

2438

2465

2500

1900

1930

1950

1981

2000

2032

2060

2083

2100

2134

2160

Datum length

Ld (mm)

3091

3142

3218

3293

3343

3393

3468

3543

3593

3718

3853

3980

4108

2558

2583

2643

2710

2743

2793

2843

2888

2964

3043

2243

2253

2283

2303

2329

2343

2380

2403

2431

2456

2481

2508

2543

1943

1973

1993

2024

2043

2075

2103

2126

2143

2177

2203

Table 1-2

1-7

Standard Range 3

Standard Belt Sizes

Classical V-Belts for DIN 2215 / ISO 4184

C/22, CX

22

Belt indication

C 93

14

Cross Section

Belt Code(inch)

Belt Code

85

86

87

88

89

90

91

92

80

81

82

83

84

93

94

95

75

76

77

78

79

70

71

72

73

74

65

66

67

68

69

57

58

59

60

61

62

63

64

52

53

54

55

56

40

42

45

48

50

51

: Available size for Raw Edge Cogged V-Belts CX

Inner length

Li (mm)

2032

2060

2083

2108

2135

2159

2184

2210

2240

2261

2286

2311

2337

2360

2388

2413

1775

1800

1829

1854

1880

1900

1930

1956

1981

2000

1450

1475

1500

1525

1550

1575

1600

1625

1650

1675

1700

1725

1750

1000

1075

1150

1220

1270

1295

1320

1350

1375

1400

1425

Datum length

Ld (mm)

2084

2112

2135

2160

2187

2211

2236

2262

2292

2313

2338

2363

2389

2412

2440

2465

1827

1852

1881

1906

1932

1952

1982

2008

2033

2052

1502

1527

1552

1577

1602

1627

1652

1677

1702

1727

1752

1777

1802

1052

1127

1202

1272

1322

1347

1372

1402

1427

1452

1477

C-Section

Belt Code

160

170

180

190

195

197

200

210

220

230

240

250

260

270

118

120

122

125

128

130

132

138

140

142

148

150

155

96

97

98

99

100

102

105

108

110

112

115

Inner length

Li (mm)

4064

4318

4572

4825

4950

5000

5080

5334

5600

5842

6096

6350

6600

6858

3000

3050

3100

3175

3250

3300

3350

3500

3550

3600

3750

3810

3937

2438

2465

2500

2525

2540

2591

2667

2750

2800

2845

2921

Size range: 37" ~ 660"

Table 1-3

Datum length

Ld (mm)

4116

4370

4624

4877

5002

5052

5132

5386

5652

5894

6148

6402

6652

6910

3052

3102

3152

3227

3302

3352

3402

3552

3602

3652

3802

3862

3989

2490

2517

2552

2577

2592

2643

2719

2802

2852

2897

2973

1

Properties

1-8

1

Properties

3 Standard Range

Standard Belt Sizes

Classical V-Belts for DIN 2215 / ISO 4184

D/32 E/40

32 40

19 25

Table 1-4

Belt indication

D 120

Belt Code

165

170

180

190

200

210

220

230

240

250

260

270

280

100

105

110

115

120

130

135

140

150

155

160

300

310

330

360

Cross Section

Belt Code(inch)

D-Section

Inner length

Li (mm)

4200

4320

4570

4825

5080

5330

5600

5850

6096

6350

6600

6850

7100

2540

2675

2800

2925

3048

3300

3425

3550

3810

3925

4060

7620

7875

8380

9144

Size range: 100" ~ 660"

Datum length

Ld (mm)

4275

4395

4645

4900

5155

5405

5675

5925

6171

6425

6675

6925

7175

2615

2750

2875

3000

3123

3375

3500

3625

3885

4000

4135

7695

7950

8455

9219

Belt indication

E 180

Belt Code

180

210

240

270

300

330

360

390

420

Cross Section

Belt Code(inch)

E-Section

Inner length

Li (mm)

4575

5300

6100

6850

7620

8380

9150

9900

10670

Size range: 144" ~ 660"

Datum length

Ld (mm)

4657

5382

6182

6932

7702

8462

9232

9982

10752

1-9

Standard Range 3

Standard Belt Sizes

Cross section Dimension of Classical V-Belts for DIN

Table 1-5

Section

ISO 4184

DIN 2215

Z

10

A

13

B

17

C

22

D

32

E

40

Top belt width

Datum width

Height of belt

Datum length Ld bo (mm) bd (mm) h (mm)

Li+ (mm)

10

8.5

6

22

13

11

9

30

17

14

11

43

22

19

14

52

32

27

19

75

Distance down to datum line hd (mm) 2.5

3.3

4.2

5.7

8.1

12

Outer length La Li+ (mm) 38 50 69 88 126 157

Recommended minimum

Pulley datum diameter

Recommended maximum

Belt speed dd (mm)

45

(40)

71

(63)

112

(90)

180

(140)

315 450

V (m/s) 30

( ) : Figure of recommended minimum Pulley datum diameter for Raw Edge Cogged type.

25

82

40

32

1

Properties bo bd hd h

Fig. 1-9

1-10

1

Properties

3 Standard Range

Standard Belt Sizes

Maxstar Wedge V-Belts for RMA / MPTA

h bo

Section

3V/9N

5V/15N

8V/25N bo (mm) h (mm)

9.5

16.0

25.5

8.0

13.5

23.0

Belt type

Belt length range(inch) bo (mm) h (mm)

3VX 5VX

25~95 96~270 25~95 96~270

9.9

8.7

8.6

9.0

16.6

13.5

15.7

13.7

3V(3VX)-Section

Belt Code

Effective length

Le (mm)

5V(5VX)-Section

Belt Code

Effective length

Le (mm)

630

670

710

750

800

475

500

530

560

600

355

375

400

425

450

250

265

280

300

315

335

850

900

950

1000

1060

1120

1180

1250

1320

1400

1207

1270

1346

1422

1524

1600

1702

1803

1905

2032

635

673

711

762

800

851

902

953

1016

1080

1143

2159

2286

2413

2540

2692

2845

2997

3175

3353

3556

950

1000

1060

1120

1180

1250

1320

1400

1500

1600

710

750

800

850

900

500

530

560

600

630

670

1700

1800

1900

2000

2120

2240

2360

2500

2650

2800

3000

3150

3350

3550

: Available size for Raw Edge Cogged V-Belts 3VX & 5VX

2413

2540

2692

2845

2997

3175

3353

3556

3810

4064

1270

1346

1422

1524

1600

1702

1803

1905

2032

2159

2286

4318

4572

4826

5080

5385

5690

5994

6350

6731

7112

7620

8001

8509

9017

Belt indication

5V 1000

Cross Section

Belt Code(inch×10)

Table 1-6

8V-Section

Belt Code

Effective length

Le (mm)

1900

2000

2120

2240

2360

2630

2500

2650

2800

3000

1000

1060

1120

1180

1250

1320

1400

1500

1600

1700

1800

3150

3350

3550

3750

4000

4250

4500

4750

5000

5600

6000

4826

5080

5385

5690

5994

5994

6350

6731

7112

7620

2540

2692

2845

2997

3175

3353

3556

3810

4064

4318

4572

8001

8509

9017

9525

10160

10795

11430

12065

12700

14224

15240

1-11

Standard Range 3

Standard Belt Sizes

Narrow V-Belts for DIN7753 / ISO4184

h bo

Datum length

Ld(mm)

SPZ(SPZX)-Section

Outer length

La(mm)

Datum length

Ld(mm)

Outer length

La(mm)

1262

1270

1287

1300

1312

1320

1337

1340

1162

1180

1187

1200

1202

1212

1237

1250

1362

1387

1400

1412

1420

1437

1462

1487

1500

1512

1077

1080

1087

1100

1112

1120

1137

1140

987

1000

1010

1012

1024

1037

1047

1060

875

887

900

912

925

937

950

962

772

787

800

812

825

837

850

862

670

687

710

722

737

750

760

762

487

512

562

587

612

630

637

662

1275

1283

1300

1313

1325

1333

1350

1353

1175

1193

1200

1213

1215

1225

1250

1263

1375

1400

1413

1425

1433

1450

1475

1500

1513

1525

1090

1093

1100

1113

1125

1133

1150

1153

1000

1013

1023

1025

1037

1050

1060

1073

888

900

913

925

938

950

963

975

785

800

813

825

838

850

863

875

683

700

723

735

750

763

773

775

500

525

575

600

625

643

650

675

2087

2120

2137

2160

2187

2200

2240

2280

1862

1887

1900

1937

1987

2000

2030

2037

1687

1700

1737

1762

1787

1800

1812

1837

1520

1537

1562

1587

1600

1612

1637

1662

3150

3170

3200

3250

3350

3450

3550

3660

2337

2410

2500

2540

2650

2690

2840

3070

3750

4000

4500

2100

2133

2150

2173

2200

2213

2253

2293

1875

1900

1913

1950

2000

2013

2043

2050

1700

1713

1750

1775

1800

1813

1825

1850

1533

1550

1575

1600

1613

1625

1650

1675

3163

3183

3213

3263

3363

3463

3563

3673

2350

2423

2513

2553

2663

2703

2853

3083

3763

4013

4513

Section

SPZ (SPZX)

SPA (SPAX)

SPB (SPBX)

SPC (SPCX) bo (mm) h (mm)

9.7

12.7

16.3

22.0

8.0

10.0

13.0

18.0

Datum length

Ld(mm)

SPA(SPAX)-Section

Outer length

La(mm)

Datum length

Ld(mm)

Outer length

La(mm)

1732

1757

1782

1800

1807

1832

1857

1882

1582

1600

1607

1632

1657

1682

1700

1707

1900

1907

1932

1957

1982

2000

2032

2057

2082

2120

1407

1432

1457

1482

1500

1507

1532

1557

1300

1307

1320

1332

1357

1367

1382

1400

1157

1182

1207

1232

1250

1257

1272

1282

982

1000

1032

1057

1082

1107

1120

1132

857

882

900

907

932

950

957

967

732

742

757

782

800

807

832

850

3750

3870

4000

4120

4250

4300

4500

4600

3182

3282

3350

3382

3482

3500

3550

3650

4750

4865

5000

2500

2607

2650

2800

3000

3082

3132

3150

2132

2182

2232

2240

2307

2360

2432

2482

1750

1775

1800

1818

1825

1850

1875

1900

1600

1618

1625

1650

1675

1700

1718

1725

1918

1925

1950

1975

2000

2018

2050

2075

2100

2138

1425

1450

1475

1500

1518

1525

1550

1575

1318

1325

1338

1350

1375

1385

1400

1413

1175

1200

1225

1250

1268

1275

1290

1300

1000

1018

1050

1075

1100

1125

1138

1150

875

900

918

925

950

968

975

985

750

760

775

800

818

825

850

868

3768

3888

4018

4138

4268

4318

4518

4618

3200

3300

3368

3400

3500

3518

3568

3668

4768

4883

5018

2518

2625

2668

2818

3018

3100

3150

3168

2150

2200

2250

2258

2325

2378

2450

2500

Belt indication

SPZ 1000

Cross Section

Datum length

Ld(mm)

SPB(SPBX)-Section

Outer length

La(mm)

Datum length

Ld(mm)

Outer length

La(mm)

3770

3800

3850

3870

3875

4000

4060

4100

3425

3450

3500

3550

3650

3675

3700

3750

4120

4250

4260

4296

4310

4318

4370

4500

4560

4600

3238

3250

3280

3328

3340

3350

3400

3412

2800

2840

3000

3070

3150

3170

3175

3200

2310

2360

2410

2425

2500

2530

2650

2680

2000

2030

2060

2120

2150

2180

2240

2280

1600

1690

1700

1750

1800

1850

1900

1950

1250

1320

1340

1400

1410

1500

1510

1590

3792

3822

3872

3892

3897

4022

4082

4122

3447

3472

3522

3572

3672

3697

3722

3772

4142

4272

4282

4318

4332

4340

4392

4522

4582

4622

3260

3272

3302

3350

3362

3372

3422

3434

2822

2862

3022

3092

3172

3192

3197

3222

2332

2382

2432

2447

2522

2552

2672

2702

2022

2052

2082

2142

2172

2202

2262

2302

1622

1712

1722

1772

1822

1872

1922

1972

1272

1342

1362

1422

1432

1522

1532

1612

5380

5500

5600

5680

5800

5990

6000

6300

4620

4720

4750

4820

4870

5000

5070

5300

6340

6700

6720

7100

7500

8000

8500

9000

up to 10000

5402

5522

5622

5702

5822

6012

6022

6322

4642

4742

4772

4842

4892

5022

5092

5322

6362

6722

6742

7122

7522

8022

8522

9022

Datum length(mm)

Table 1-7

SPC(SPCX)-Section

Datum length

Ld(mm)

Outer length

La(mm)

5070

5200

5300

5330

5400

5500

5600

5700

6000

6200

6300

6480

6500

6700

4650

4720

4750

4850

4900

4970

5000

5030

4350

4380

4400

4420

4445

4450

4500

4530

3810

3970

4000

4050

4100

4200

4250

4300

3550

3600

3620

3670

3700

3750

3770

3800

3320

3350

3375

3420

3430

3450

3500

3520

2000

2120

2360

2500

3100

3150

3200

3220

5100

5230

5330

5360

5430

5530

5630

5730

6030

6230

6330

6510

6530

6730

4680

4750

4780

4880

4930

5000

5030

5060

4380

4410

4430

4450

4475

4480

4530

4560

3840

4000

4030

4080

4130

4230

4280

4330

3580

3630

3650

3700

3730

3780

3800

3830

3350

3380

3405

3450

3460

3480

3530

3550

2030

2150

2390

2530

3130

3180

3230

3250

up to 10000

1

Properties

: Available size for Narrow Raw Edge Cogged V-Belts SPZX, SPAX, SPBX, SPCX

1-12

1

Properties

3 Standard Range

Standard Belt Sizes

Cross section dimension of Narrow V-Belts for DIN &

Maxstar Wedge V-Belts for RMA / MPTA

Table 1-8

Section SPZ SPA SPB SPC 3V 5V 8V

Top belt width

Datum width bo (mm) bd (mm)

9.7

8.5

12.7

11.0

16.3

14.0

22.0

19.0

9.5

16.0

25.5

Height of belt

Inner length h (mm) 8.0

10.0

13.0

18.0

8.0

13.5

23.0

Li Ld- (mm) 38 45 60 83

Outer length

Distance down to datum line

Recommended minimum

Pulley datum diameter

Recommended maximum

Belt speed

La Ld+ (mm) hd (mm) dd (mm)

13

2.0

63

(56)

18

2.8

90

(71)

22

3.5

140

(112)

30

4.8

224

(180)

63

(56)

140

(112)

335

V (m/s) 40

( ) : Recommended minimum Pulley datum diameter for Raw Edge Cogged type.

bo bd hd h

Fig. 1-10

1-13

Standard Range 3

Standard Belt Sizes

Double V-Belts for DIN 7722/ISO 5289/RMA IP-21

Fig. 1-11

b h

Dimension of Double V-Belts

Section

Belt width b (mm)

Belt height h (mm)

Belt angle α1 (°)

Belt angle α2 (°)

Recommended minimum pulley diameter (mm)

A A

12.5

10.0

40

40

B B

15.5

13.0

40

40

Table 1-9

CC

22.0

17.0

40

40

75 130 230

AA

Cross Section

Table 1-10

Pitch length

Belt Code inch mm

AA 41

AA 46

AA 49

AA 51

AA 52

AA 53

AA 55

AA 60

AA 72

AA 300

43.1

48.1

51.1

53.1

54.1

55.1

57.1

62.1

74.1

301.1

1095

1222

1298

1349

1374

1400

1450

1577

1882

7648

BB

Cross Section

Table 1-11

Pitch length

Belt Code inch mm

BB 54

BB 55

BB 59

BB 60

BB 71

BB 400

56.9

57.9

61.9

62.9

73.9

401.4

1445

1471

1572

1598

1877

10196

CC

Cross Section

Table 1-12

Pitch length

Belt Code inch mm

CC 71

CC 500

75.2

502.2

1910

12756

1

Properties

Fig. 1-12

1-14

1

Properties

3 Standard Range

Standard Belt Sizes

Perforated Open-End V-Belts

Fig. 1-13

b h

Dimension of Perforated Open-End V-Belts

Section

Belt width b (mm)

Z A B

Table 1-13

C

10.0 12.5 16.5 22.0

Belt height h (mm)

Belt angle (°)

40 40 40 40

100 100 100 100

Length per roll (m)

Hole diameter (mm)

Hole pitch (mm)

2.0 2.5 3.0 4.0

5.0 8.0 9.0 11.0

Fig. 1-15 (Metal fastener)

Fig. 1-14

1-15

Standard Range 3

1

Properties

1-16

4

V-belt Pulleys

Standard Pulley Sizes

Pulley for Classical V-Belts & Narrow V-Belts for DIN

Pulley for Classical V-belts & Narrow V-Belts complies with DIN 2217 Part 1.

Fig. 1-16

single-groove multi-groove b

2

Rz100 f b

1 bd f f e break sharp corners

1

Properties

Dimensions (mm)

Belt section

Z, ZX

SPZ, SPZX

A, AX

SPA, SPAX

B, BX

SPB, SPBX

C, CX

SPC, SPCX

D

E

Datum diameter : dd dd 80

80 dd dd 118

118 dd dd 190

190 dd dd 315

315 dd dd 500

500 dd dd 630

630 dd

34

38

34

38

(° )

34

38

34

38

36

38

36

38 b1 bd c t

9.7 8.5 2.0

-0

14 +0.6

12.7 11.0 2.8

-0 e

Table 1-14

f

12.0 ± 0.3

8.0 ± 0.6

15.0 ± 0.3

10.0 ± 0.6

19.0 ± 0.4

12.5 ± 0.8

-0

24 +0.6

22.0 19.0 4.8

-0

-0

25.5 ± 0.5

17.0 ± 1.0

37.0 ± 0.6

24.0 ± 2.0

-0

44.5 ± 0.7

29.0 ± 2.0

Number of belts & pulley width b2 (mm)

Number of belt

1

2

7

8

9

10

5

6

3

4

11

12

Z, ZX

SPZ, SPZX

16

28

88

100

112

124

40

52

64

76

136

148

A, AX

SPA, SPAX

20

35

110

125

140

155

50

65

80

95

170

185

B, BX

SPB, SPBX

25

44

63

82

101

120

139

158

177

196

215

234

C, CX

SPC, SPCX

34

59.5

85

110.5

136

161.5

187

212.5

238

263.5

289

314.5

D

48

85

122

159

193

233

270

307

344

381

418

455

Table 1-15

E

58

102.5

147

191.5

236

280.5

325

369.5

414

458.5

503

547.5

1-17

V-belt Pulleys

4

Standard Pulley Sizes

Pulley for Maxstar Wedge V-Belts for RMA / MPTA

Fig. 1-17

e b

1 bw

α

f r

1 r

1

Dimensions(mm)

Belt section

Effective diameter: de

3V

(3VX)

(° )

90

90 de 150

150 de 300

300

36 ± 0.5

38 ± 0.5

40 ± 0.5

42 ± 0.5

Effective width b1

Pitch width bw

8.9 ± 0.13

8.51

8.49

8.46

8.44

a

0.6

Groove depth min. t

8.9

Pitch e

10.3 ± 0.25

Groove spacing:f

8.7

5V

(5VX)

250

250 de 400

400

38 ± 0.5

40 ± 0.5

42 ± 0.5

15.2 ± 0.13

8V

400

400 de 560

560

38 ± 0.5

40 ± 0.5

42 ± 0.5

25.4 ± 0.13

14.30

14.25

14.20

23.68

23.58

23.48

1.3

2.5

15.2

25.4

17.5 ± 0.25

28.6 ± 0.25

12.7

19.0

g

Table 1-16

1

Properties

0.20

0.25

0.30

Number of belts & pulley width(mm)

Belt

Number of belts

Section

1 2

3V 18 28

5V

8V

26

38

43

67

61

96

3

38

4

49

78

124

5

59

96

153

6

69

113

181

7

80

131

210

8

90

148

239

9

Table 1-17

10

100

166

267

111

183

296

1-18

2-1

2

.Design

Design process

Calculation example

Formulas for V-Belt drive design

Power Rating Table

Drive Selection Table

2

Design

Design process for Classical V-Belts / Narrow V-Belts

Design Flow

1

Set conditions required in design work.

a. Type of machine b. Transmission power

It is ideal to use the actual load applied to the belt as the value of the transmission power, but the rated power of the motor is commonly used for calculation.

c. Running hours in a single day d. Small pulley speed e. Speed ratio

Speed ratio =

Large pulley datum diameter

Small pulley datum diameter f. Interim center distance g. Special uses and environmental conditions

Contact us for the case of exposure to high or low temperature, water, oil, acid or alkali.

Design Flow

2

Set the design power.

1. How to calculate the service factor (Ks)

Ks=Ko+Ki+Ke

Wherein, Ks : Service factor

Ko : Service correction factor (Table 2-1)

Ki : Idler correction factor (Table 2-2)

Ke : Environment correction factor (Table 2-3)

2. How to calculate the design power (Pd)

Pd=Pt×Ks

Wherein, Pd : Design power (kW)

Pt : Transmission power (kW)

Ks : Service factor

The value of transmission power used in designing is the power requirement of the driven machine, if obtained, or the power of driving unit (engine or motor).

Convert the value from torque (Tq) or horse power (PS) into kW with the formula below.

Pt=

Tq×n

9.55×10

3

Wherein, Pt : Transmission power (kW)

Tq : Torque (N•m) n : Shaft speed (rpm)

1 PS=0.7355 kW

2-3

1. Ko

Service correction factor (Ko)

Driven Machine

Agitator for liquid

Small centrifugal blower

Fan up to 7.5 kW

Light-duty conveyor

Belt conveyor (for sand, grain, etc.)

Dough mixer Fan over 7.5 kW

Generator Machine tool

Punching machine Pressing machine

Shearing machine Printing machine

Positive displacement rotary pump

Vibrating and rotary screen

Brick-making machinery

Bucket elevator Piston compressor

Screw conveyor Hammer mill

Hollander Piston pump

Positive displacement blower

Crusher Woodworking machinery

Textile machinery

Gyratory and jaw-roll crusher

Mill (ball/rod) Hoist (heavy load)

Rolling mill, calender etc, for the rubber

and plastic industry

Table 2-1

Driving unit / Motor

Max power 300% of rated power Max power > 300% of rated power

AC motors, single-and three-phase with star-delta start.

DC shunt-wound motors, Multiple cylinder internal combustion engines.

3 ~ 5

Running time (hrs./day)

8 ~ 12 16 ~ 24

AC motors, single and three-phase, series wound, slip-ring motors with direct start.

DC motors, series and compound wound.

Single cylinder internal combustion engines.

3 ~ 5

Running time (hrs./day)

8 ~ 12 16 ~ 24

1.0

1.1

1.2

1.1

1.2

1.3

1.1

1.2

1.3

1.2

1.3

1.4

1.3

1.4

1.5

1.2

1.4

1.5

1.3

1.5

1.6

1.4

1.6

1.8

2. Ki

Idler correction factor (Ki)

Location of Idler

Belt slack side, inside of belt

Belt slack side, outside of belt

Belt tight side, inside of belt

Belt tight side, outside of belt

3. Ke

Table 2-2

Ki

0.0

0.1

0.1

0.2

Environment correction factor (Ke)

Environmental condition

Frequent start and stop of machine

Hard to conduct maintenance checkup

Dusty environment

High temperature

Oil or water splashing

Table 2-3

Ke

0.2

0.2

0.2

0.2

0.2

Avoid oil and water splash by cover to prevent belt slipping.

2

Design

2-4

2

Design

2-5

Design Flow

3

Select the belt type.

Select the belt type in the selection charts below according to design power and small pulley speed.

If the intersection locates near the dividing line, select belt type considering other conditions such as pulley cost.

Cross section selection chart for Classical V-Belts for DIN Fig. 2-1

10000

7000

5000

4000

Z

2850

2000

1450

950

700

500

400

300

200

A

B

C

D

E

100

0.1

0.5

1 2 3 5 10

Design power [kW]

20 30 50 100 200 500 1000

Cross section selection chart for Classical Raw Edge Cogged V-Belts Fig. 2-2

10000

7000

5000

4000

ZX

2850

2000

1450

950

700

500

400

300

200

AX

BX

CX

100

0.1

0.5

1 2 3 5 10

Design power [kW]

20 30 50 100 200 500 1000

Cross section selection chart for Narrow V-Belts for DIN Fig. 2-3

10000

7000

5000

4000

2850

2000

1450

950

700

500

400

300

200

SPZ

SPZX

SPA

SPAX

SPB

SPBX

SPC

SPCX

100

1 2 3 5 10 20 30

Design power [kW]

50 100 200 500 1000

Design Flow

4

Select the pulley size.

Select the small pulley datum diameter larger than the minimum specified in the Table 2-4.

Inappropriate pulley reduces transmission efficiency and belts' durability significantly.

Minimum pulley datum diameter Unit : mm Table 2-4

Belt type

For wrapped type

For raw edge cogged type

Z

45

40

A B C D E

71 112 180 315 450

63 90 140 -

Calculate the large pulley datum diameter.

Dd = dd × SR

Dd : Large pulley datum diameter (mm) dd : Small pulley datum diameter (mm)

SR : Speed ratio

Difference between pulley outside diameter and datum diameter is specified in the following table.

Difference between pulley outside diameter and datum diameter Unit : mm Table 2-5

Belt type

Difference

Z A B C D E

Design Flow

5

Determine the belt length.

1) Determine the interim belt datum length.

Ld' = 2C'+1.57(Dd+dd)

Ld' : Interim belt datum length (mm)

C' : Interim center distance (mm)

Dd : Large pulley datum diameter (mm) dd : Small pulley datum diameter (mm)

2) Select the standard belt length closest to the Ld' from our lineup.

Center distance is calculated from the following formula.

C = b + b 2 − 8 (Dd − dd) 2

8

C : Center distance (mm) b : 2Ld-π(Dd+dd)

Ld : Belt datum length (mm)

3) If center distance is predetermined, use the following

formula to determine interim belt datum length.

(Dd − dd) 2

Ld' = 2C + −− (Dd + dd) + −−−−−−−−−−

2 4C

2

Design

2-6

2

Design

Belt length correction factor for Classical V-Belts: K

A

1.10

1.12

1.13

1.15

1.18

1.19

1.21

1.23

1.25

1.27

1.30

1.33

1.35

1.38

1.40

0.98

1.01

1.03

1.04

1.05

1.07

1.08

0.77

0.82

0.85

0.87

0.89

0.91

0.93

0.94

0.96

B

1.21

1.24

1.26

1.29

1.31

1.33

1.35

1.38

1.41

1.44

1.46

1.04

1.06

1.07

1.09

1.11

1.13

1.15

1.17

1.18

0.93

0.95

0.97

0.98

0.99

1.01

1.03

0.72

0.76

0.79

0.81

0.83

0.85

0.87

0.89

0.91

0.92

0.94

0.95

0.98

1.00

1.03

1.05

0.81

0.82

0.84

0.85

0.87

0.89

0.91

1.07

1.09

1.11

1.13

1.16

1.18

1.21

1.09

1.12

1.14

1.17

1.19

1.21

1.22

1.25

1.28

1.31

1.33

0.93

0.94

0.96

0.98

1.00

1.02

1.03

1.05

1.07

0.71

0.73

0.75

0.77

0.78

0.80

0.82

0.84

0.86

0.87

0.89

0.90

0.91

Table 2-7

Design Flow

6

Determine the required number of belts.

Required number of belts (nb) is determined as follows.

Round up the calculation results.

nb =

Pd

Pc

--Pc = (Ps+Pa)×Kc

Kc = K × K

Dd

— dd

C nb : Required number of belts

Pd : Design power (kW)

Pc : Correction power rating (kW)

Ps : Basic power rating (kW)

Pa : Additional power rating for speed ratio (kW)

Kc : Power rating correction factor

Kθ : Arc of contact correction factor

K : Belt length correction factor

Dd : Large pulley datum diameter (mm) dd : Small pulley datum diameter (mm)

C : Center distance (mm)

Arc of contact correction factor : Kθ

Dd-dd

C

Contact angle on small pulley

θ(°)

0.00 180

Table 2-6

1.00

Length designation

105 ~ 111

112 ~ 119

120 ~ 127

128 ~ 144

145 ~ 154

155 ~ 169

170 ~ 179

180 ~ 194

195 ~ 209

210 ~ 239

240 ~ 269

270 ~ 299

300 ~ 329

330 ~ 359

360 ~ 389

390 ~ 419

420 ~ 479

480 ~ 539

540 ~ 600

601 ~ 660

20 ~ 25

26 ~ 30

31 ~ 34

35 ~ 37

38 ~ 41

42 ~ 45

46 ~ 50

51 ~ 54

55 ~ 59

60 ~ 67

68 ~ 74

75 ~ 79

80 ~ 84

85 ~ 89

90 ~ 95

96 ~ 104

C D E

0.10 174

0.20 169

0.30 163

0.40 157

0.50 151

0.60 145

0.70 139

0.80 133

0.90 127

1.00 120

1.10 113

1.20 106

1.30 99

1.40 91

1.50 83

Contact angle on small pulley : θ=180 - 2sin -1

Dd - dd

2C

Contact angle on large pulley : θ=180 + 2sin -1

Dd - dd

2C

Dd : Large pulley datum diameter (mm) dd : Small pulley datum diameter (mm)

C : Center distance (mm)

0.99

Belt length correction factor for Narrow V-Belts: K

0.97

0.96

Length designation

0.94

487 ~ 670

0.93

671 ~ 755

Table 2-8

Belt length correction factor : Kl

SPZ

SPZX

0.80

0.84

SPA

SPAX

0.79

SPB

SPBX

SPC

SPCX

0.86

0.89

0.81

0.83

0.91

756 ~ 850

0.89

851 ~ 950

951 ~ 1060

0.87

1061 ~ 1185

0.85

1186 ~ 1325

0.82

1326 ~ 1500

1501 ~ 1700

0.80 1701 ~ 1900

0.77

1901 ~ 2120

2121 ~ 2370

3776 ~ 4250

4251 ~ 4750

4751 ~ 5300

5301 ~ 5950

5951 ~ 6700

6701 ~ 7550

7551 ~ 8500

8501 ~ 9500

0.91

0.93

0.95

0.98

1.00

1.02

1.05

1.07

1.09

1.11

1.13

1.16

1.18

1.20

0.85

0.87

0.89

0.91

0.93

0.95

0.96

0.98

1.00

1.02

1.04

1.06

1.08

1.10

1.12

0.82

0.84

0.86

0.88

0.90

0.92

0.94

0.96

0.98

1.00

1.02

1.04

1.06

1.08

1.10

1.12

1.14

1.16

0.82

0.84

0.86

0.88

0.90

0.92

0.94

0.96

0.98

1.00

1.02

1.04

1.06

1.08

9501 ~ 10000 1.17 1.10

0.85

0.87

0.88

0.90

0.91

0.93

0.95

0.98

1.00

1.02

1.04

1.06

1.08

1.10

1.13

1.16

1.18

2-7

Design Flow

7

Installation and take-up allowance.

Installation and take-up allowance are as follows.

Use idler pulley if you cannot arrange allowance.

Fig. 2-4

Installation allowance

Center Distance

Take-up allowance

Installation and take-up allowance for Classical V-Belts

Length designation

20 ~ 38

39 ~ 60

61 ~ 90

91 ~ 120

121 ~ 158

159 ~ 195

196 ~ 240

241 ~ 270

271 ~ 330

331 ~ 400

400 ~

Datum length (mm)

500 Ld 970

970 Ld 1500

1500 Ld 2200

2200 Ld 3000

3000 Ld 4000

4000 Ld 5000

5000 Ld 6000

6000 Ld 6800

6800 Ld 8400

8400 Ld 10000

10000 Ld

Z

15

20

Installation allowance (mm)

A

20

B

25

C D

20

20

25

35

40

40

25

25

35

35

35

40

40

40

50

50

50

50

50

50

50

50

65

65

65

75

E

65

65

65

75

75

90

Table 2-9

Take-up allowance (mm)

All sections

25

40

50

65

75

90

100

115

130

155

Ld× 0.015

Installation and take-up allowance for Narrow V-Belts

Length designation

487 ~ 670

670 ~ 1000

1000 ~ 1320

1320 ~ 1662

1662 ~ 2240

2240 ~ 3000

3000 ~ 3550

3550 ~ 4500

4500 ~ 5600

5600 ~ 6700

6700 ~ 8500

8500 ~ 10000

21

24

28

30

35

41

46

55

Installation allowance (mm)

SPZ

SPZX

16

SPA

SPAX

19

SPB

SPBX

SPC

SPCX

18

19

21

22 27

24

27

31

33

38

44

29

32

35

38

43

48

54

63

70

39

43

46

51

56

62

71

78

10

10

13

45

56

67

85

100

17

22

30

36

Table 2-10

Take-up allowance (mm)

All sections

2

Design

2-8

2

Design

2-9

Calculation example for Classical V-Belts / Narrow V-Belts

Design Flow

1

Set conditions required in design work.

a. Type of machin ··· Compressor b. Transmission power ··· Four pole motor 3.75kW/1750rpm c. Running hours in a single day ··· 8 hours / day d. Small pulley speed ··· 1750rpm

Design Flow

2

Set the design power.

Service correction factor : Ko = 1.3 (Table 2-1)

Idler correction factor : Ki = 0 (Table 2-2)

Environment correction factor : Ke = 0 (Table 2-3)

Service factor : Ks = Ko + Ki + Ke

=1.3 + 0 + 0

=1.3

Design power : Pd = Pt × Ks

=3.75 × 1.3

Design Flow

3

Select the belt type.

Select the belt type in Cross section selection chart.

The lines of Pd (4.88kW) and small pulley speed (1750rpm) intersect in A section.

Design Flow

4

Select the pulley size.

1) Select the small pulley of 95mm datum diameter.

(The recommended minimum pulley datum diameter is specified in Table 2-4.)

2) Calculate the large pulley datum diameter.

Large pulley datum diameter : Dd = dd × SR

= 95 × 2

= 190 mm e. Speed ratio ··· 2 : 1 (Deceleration) f. Interim center distance ··· 300mm g. Special uses and environmental conditions ··· None

Design Flow

5

Determine the belt length.

1) Determine the interim belt datum length.

Ld' = 2 × 300 + 1.57 × (190 + 95) = 1047.5 mm

2) Select the standard belt length closest to the Ld' from Table 1-2.

Belt datum length 1046mm : Length designation A40 is selected.

Center distance is calculated as follows.

b = 2 × 1046 - 3.14 × (190 + 95) = 1197

C =

1197 + 1197

8

2

- 8 × (190 - 95) 2

=295.4

Center distance : C = 295 mm

Design Flow

6

Determine the required number of belts.

Ps = 2.16 kW (Refer to Power Rating Table)

Pa = 0.37 kW (Refer to Power Rating Table)

Dd-dd

=

190 - 95

C 295

= 0.32

Kθ = 0.96 (Refer to Table 2-6).

K = 0.89 (Refer to Table 2-7).

Kc = Kθ×K = 0.96 × 0.89 = 0.85

Pc = (Ps + Pa) × Kc = (2.16 + 0.37) × 0.85 = 2.15 kW nb =

Pd

=

4.88

Pc 2.15

= 2.3 3 pcs.

Design Flow

7

Installation and take-up allowance.

Installation and take-up allowance are obtained from Table 2-9.

Installation allowance = 20 mm

Minimum center distance = 295 - 20 = 275 mm

Take-up allowance = 40 mm

Maximum center distance = 295 + 40 = 335 mm

Design process for Maxstar Wedge V-Belts

Design Flow

1

Set conditions required in design work.

a. Type of machine b. Transmission power

It is ideal to use the actual load applied to the belt as the value of the transmission power, but the rated power of the motor is commonly used for calculation.

c. Running hours in a single day d. Small pulley speed e. Speed ratio

Speed ratio =

Large pulley pitch diameter

Small pulley pitch diameter f. Interim center distance g. Special uses and environmental conditions

Contact us for the case of exposure to high or low temperature, water, oil, acid or alkali.

Design Flow

2

Set the design power.

1. How to calculate the service factor (Ks)

Ks=Ko+Ki+Ke

Wherein, Ks : Service factor

Ko : Service correction factor (Table 2-11)

Ki : Idler correction factor (Table 2-12)

Ke : Environment correction factor (Table 2-13)

2. How to calculate the design power (Pd)

Pd=Pt×Ks

Wherein, Pd : Design power (kW)

Pt : Transmission power (kW)

Ks : Service factor

The value of transmission power used in designing is the power requirement of the driven machine, if obtained, or the power of driving unit (engine or motor).

Convert the value from torque (Tq) or horse power (PS) into kW with the formula below.

Pt=

Tq×n

9.55×10

3

Wherein, Pt : Transmission power (kW)

Tq : Torque (N•m) n : Shaft speed (rpm)

1 PS=0.7355 kW

2

Design

2-10

2

Design

1. Ko

Service correction factor (Ko)

Driven Machine

Agitator for liquid

Small centrifugal blower

Fan up to 7.5 kW

Light-duty conveyor

Belt conveyor (for sand, grain, etc.)

Dough mixer Fan over 7.5 kW

Generator Machine tool

Punching machine Pressing machine

Shearing machine Printing machine

Positive displacement rotary pump

Vibrating and rotary screen

Brick-making machinery

Bucket elevator Piston compressor

Screw conveyor Hammer mill

Hollander Piston pump

Positive displacement blower

Crusher Woodworking machinery

Textile machinery

Gyratory and jaw-roll crusher

Mill (ball/rod) Hoist (heavy load)

Rolling mill, calender etc, for the rubber

and plastic industry

Table 2-11

Driving unit / Motor

Max power 300% of rated power Max power > 300% of rated power

AC motors, single-and three-phase with star-delta start.

DC shunt-wound motors, Multiple cylinder internal combustion engines.

3 ~ 5

Running time (hrs./day)

8 ~ 12 16 ~ 24

AC motors, single and three-phase, series wound, slip-ring motors with direct start.

DC motors, series and compound wound.

Single cylinder internal combustion engines.

3 ~ 5

Running time (hrs./day)

8 ~ 12 16 ~ 24

1.0

1.1

1.2

1.1

1.2

1.3

1.1

1.2

1.3

1.2

1.3

1.4

1.3

1.4

1.5

1.2

1.4

1.5

1.3

1.5

1.6

1.4

1.6

1.8

2. Ki

Idler correction factor (Ki)

Location of Idler

Belt slack side, inside of belt

Belt slack side, outside of belt

Belt tight side, inside of belt

Belt tight side, outside of belt

3. Ke

Table 2-12

Ki

0.0

0.1

0.1

0.2

Environment correction factor (Ke)

Environmental condition

Frequent start and stop of machine

Hard to conduct maintenance checkup

Dusty environment

High temperature

Oil or water splashing

Table 2-13

Ke

0.2

0.2

0.2

0.2

0.2

Avoid oil and water splash by cover to prevent belt slipping.

2-11

Design Flow

3

Select the belt type.

Select the belt type in the selection charts below according to design power and small pulley speed.

If the intersection locates near the dividing line, select belt type considering other conditions such as pulley cost.

Cross section selection chart for Maxstar Wedge V-Belts Fig. 2-5

10000

7000

5000

4000

2850

2000

1450

950

700

500

400

300

200

3V

3VX

5V

5VX

8V

100

1 2 3 5 10 20 30 50

Design power [kW]

100 200 500 1000

2

Design

2-12

2

Design

Design Flow

4

Select the pulley size.

Design Flow

5

Determine the belt length.

4-A : Select from the standard pulleys.

You can obtain pulley size, belt length, and center distance easily by using Drive Selection Table on page 2-43 ~ 2-62.

1) Choose the speed ratio to satisfy your drive design.

2) Choose the pulley size.

3) Choose the center distance.

4) Look up to find the belt length.

Go to design flow

4-B : With the nonstandard pulley.

Follow the procedure below if you cannot find the desired speed ratio in the Drive Selection Table.

1) Choose the speed ratio closest to the desired speed ratio.

2) Choose the large pulley from the standard pulleys.

3) Calculate the effective diameter of the small pulley from the following formula.

de =

Dp

SR

+

(Difference between effective diameter and pitch diameter) de : Small pulley effective diameter

Dp : Large pulley pitch diameter

SR : Speed ratio

Difference between effective diameter and pitch diameter

Belt type

Difference (mm)

3V·3VX

1.2

5V·5VX

2.6

Table 2-14

8V

5.0

Pulley diameter should be larger than the minimum pulley effective diameter specified in Table 2-15.

Minimum pulley effective diameter

Belt type

Minimum pulley effective diameter (mm)

3V 3VX 5V

Table 2-15

5VX 8V

5-A : Determine from Drive Selection Table.

1) Choose the speed ratio and center distance closest to

your drive in Drive Selection Table on page 2-43 ~ 2-62.

2) Precise center distance is calculated by adding the following correction value to the center distance in Drive

Selection Table.

Center distance correction value = 0.8 × (Effective diameter of the standard small pulley - Effective diameter of the calculated small pulley)

5-B : Determine from the calculation formula.

1) Determine the interim belt effective length.

Le' = 2C'+1.57(De+de)

Le' : Interim belt effective length (mm)

C' : Interim center distance (mm)

De : Large pulley effective diameter (mm) de : Small pulley effective diameter (mm)

2) Select the standard belt length closest to the Lp' from our lineup.

Center distance is calculated by the following formula.

C = b + b 2 − 8 (De − de) 2

8

C : Center distance (mm) b : 2Le-π (De+de)

Le : Belt effective length (mm)

2-13

Design Flow

6

Determine the required number of belts.

Required number of belts (nb) is determined as follows.

Round up the calculation results.

nb =

Pd

Pc

--Pc = (Ps+Pa)×Kc

Kc = K × K

De-de

C

Contact angle on small pulley

(°)

0.00 180

0.10 174

0.20 169

0.30 163

0.40 157

0.50 151

0.60 145

0.70 139

0.80 133

0.90 127

1.00 120

1.10 113

1.20 106

1.30 99

1.40 91

1.50 83

De

— de

C nb : Required number of belt

Pd : Design power (kW)

Pc : Correction power rating (kW)

Ps : Basic power rating (kW)

Pa : Additional power rating for speed ratio (kW)

Kc : Power rating correction factor

K : Arc of contact correction factor

K : Belt length correction factor

De : Large pulley effective diameter (mm) de : Small pulley effective diameter (mm)

C : Center distance (mm)

With the standard pulley, you can obtain Kc easily from Drive

Kc is as in Color coding below.

Color coding of Power rating correction factor : Kc

0.7

0.8

0.9

1.0

1.1

Arc of contact correction factor : K

Contact angle on small pulley : =180 - 2sin -1

De - de

2C

Contact angle on large pulley : =180 + 2sin -1

De - de

2C

De : Large pulley effective diameter (mm) de : Small pulley effective diameter (mm)

C : Center distance (mm)

1.2

Table 2-16

K

1.00

0.99

0.97

0.96

0.94

0.93

0.91

0.89

0.87

0.85

0.82

0.80

0.77

0.73

0.70

0.65

Belt length correction factor for Maxstar

Wedge V-Belts: K

Table 2-17

Length designation

250

265

280

300

315

335

Belt length correction factor : K

3V

3VX

5V

5VX

8V

0.83

0.84

0.85

0.86

0.87

0.88

355

375

400

425

450

475

500

530

560

600

630

670

710

750

800

850

900

2800

3000

3150

3350

3550

3750

4000

4250

1800

1900

2000

2120

2240

2360

2500

2650

950

1000

1060

1120

1180

1250

1320

1400

1500

1600

1700

4500

4750

5000

5600

6000

0.89

0.90

0.92

0.93

0.94

0.95

0.96 0.85

0.97 0.86

0.98 0.87

0.99 0.88

1.00 0.89

1.01 0.90

1.02 0.91

1.03 0.92

1.04 0.93

1.06 0.94

1.07 0.95

1.08 0.96

1.09 0.96 0.87

1.10 0.97 0.88

1.11 0.98 0.88

1.12 0.99 0.89

1.13 1.00 0.90

1.14 1.01 0.91

1.15 1.02 0.92

1.03 0.93

1.04 0.94

1.05 0.94

1.06 0.95

1.07 0.96

1.08 0.97

1.09 0.98

1.09 0.98

1.10 0.99

1.11 1.00

1.12 1.01

1.13 1.02

1.14 1.03

1.15 1.03

1.16 1.04

1.17 1.05

1.06

1.07

1.08

1.09

1.09

1.10

1.11

1.13

2-14

2

Design

Design Flow

7

Installation and take-up allowance.

Installation and take-up allowance are as follows.

Use idler pulley if you cannot arrange allowance.

Fig. 2-6

Installation allowance

2

Design

Center Distance

Take-up allowance

Installation and take-up allowance for Maxstar Wedge V-Belts

Length designation

3V250 ~ 3V475

3V500 ~ 3V710

3V750 ~ 3V1060

3V1120 ~ 3V1250

3V1320, 3V1400

5V500 ~ 5V710

5V750 ~ 5V1060

5V1120 ~ 5V1250

5V1320 ~ 5V1700

5V1800 ~ 5V2000

5V2120 ~ 5V2240

5V2360

5V2500, 5V2560

5V2800, 5V3000

5V3150, 5V3550

8V1000, 8V1060

8V1120 ~ 8V1250

8V1320 ~ 8V1700

8V1800 ~ 8V2000

8V2120 ~ 8V2240

8V2360

8V2500, 8V2650

8V2800, 8V3000

8V3150

8V3350, 8V3550

8V3750

8V4000 ~ 8V5600

Installation allowance (mm) Take-up allowance (mm)

25

25

25

25

35

50

55

55

55

50

50

50

50

40

40

40

50

35

35

35

35

15

20

20

20

20

25

105

40

50

60

75

80

85

90

40

50

60

65

25

35

40

50

60

35

90

105

105

115

140

65

75

80

85

Table 2-18

Sum of installation and take-up allowance (mm)

65

75

85

90

110

125

130

135

140

155

160

170

195

115

120

125

140

80

90

100

115

40

55

60

70

80

60

2-15

Calculation example for Maxstar Wedge V-Belts #1 (With the standard pulley)

Design Flow

1

Set conditions required in design work.

a. machine e. Speed ratio ··· 1.87 (Deceleration) f. Interim center distance ··· 400mm g. Special uses and environmental conditions ··· None c. Running hours in a single day ··· 8 hours / day d. Small pulley speed ··· 1750rpm

Design Flow

2

Set the design power.

Service correction factor : Ko = 1.1 (Table 2-11)

Idler correction factor : Ki = 0 (Table 2-12)

Environment correction factor : Ke = 0 (Table 2-13)

Service factor : Ks = Ko + Ki + Ke

= 1.1 + 0 + 0

Design power : Pd = Pt × Ks

= 3.7 × 1.1

= 4.07 kW

Design Flow

6

Determine the required number of belts.

Ps = 1.69 kW (Refer to Power Rating Table)

Pa = 0.26 kW (Refer to Power Rating Table)

Kc = 0.9 (Refer to Drive Selection Table)

Pc = (Ps + Pa) × Kc = (1.69 + 0.26) × 0.9 = 1.76 kW nb = Pd = 4.07 = 2.3 3 pcs.

Pc 1.76

Design Flow

3

Select the belt type.

Select the belt type in Cross section selection chart.

The lines of Pd (4.07kW) and small pulley speed (1750rpm) intersect in 3V section.

Design Flow

7

Installation and take-up allowance.

Installation and take-up allowance are obtained from Table 2-18.

Installation allowance = 15 mm

Minimum center distance = 401 - 15 = 386 mm

Take-up allowance = 25 mm

Maximum center distance = 401 + 25 = 426 mm

2

Design

Summary

Belt : 3V-450, 3 pcs.

Driver pulley : 75-3V-3 (Effective diameter = 75mm, 3 grooves)

Driven pulley : 140-3V-3 (Effective diameter = 140mm, 3 grooves)

Center distance : 401mm ( +25mm / -15mm )

Design Flow

4 5

Select the pulley size.

Determine the belt length.

Small pulley effective diameter : de = 75 mm

Large pulley effective diameter : De = 140 mm

Center distance : C = 401 mm

Belt size = 3V-450

2-16

Calculation example for Maxstar Wedge V-Belts #2 (With nonstandard pulley)

Design Flow

1

Set conditions required in design work.

a. Type of machine ··· Generator b. Transmission power ··· 37kW (Gasoline engine) c. Running hours in a single day ··· 8 hours / day d. Small pulley speed ··· 1000rpm

Design Flow

2

Set the design power.

e. Speed ratio ··· 1.65 (Deceleration) f. Interim center distance ··· 1500mm g. Special uses and environmental conditions ··· None

Service correction factor : Ko = 1.3 (Table 2-11)

Idler correction factor : Ki = 0 (Table 2-12)

Environment correction factor : Ke = 0 (Table 2-13)

Service factor : Ks = Ko + Ki + Ke

= 1.3 + 0 + 0

Design power : Pd = Pt × Ks

= 37 × 1.3

= 48.1 kW

2

Design

Design Flow

3

Select the belt type.

Select the belt type in the cross section selection chart.

The lines of Pd (48.1kW) and small pulley speed (1000rpm) intersect in 5V section.

Design Flow

5

Determine the belt length.

1) Center distance = 1507 mm (5V-1500) is chosen

from the SR = 1.67 in Drive Selection Table.

2) Precise center distance is calculated as follows.

Effective diameter of the standard small pulley = 190 mm

Effective diameter of the calculated small pulley = 192 mm

C = 1507 + 0.8 × (190 - 192)

1505 mm

Center distance is also calculated as follows.

b = 2Le - π (De + de)

= 2 × 3810 - 3.14 × (315 + 192)

6028

C= b + b

2 - 8(De - de) 2

8

= 6028 + 6028 2

8

- 8(315 - 192) 2

1505.7 mm

2-17

Design Flow

4

Select the pulley size.

1) Choose the speed ratio closest to the desired speed ratio.

2) Choose the large pulley from the standard pulley.

Large pulley effective diameter : De = 315 mm is chosen from the SR = 1.67 in Drive Selection Table.

3) Calculate the small pulley effective diameter.

315 - 2.6 + 2.6

192 mm

Design Flow

6

Determine the required number of belts.

Ps = 9.42 kW (Refer to Power Rating Table)

Pa = 0.85 kW (Refer to Power Rating Table)

De-de

=

315 - 192

C 1505

= 0.082

K = 0.99 (Refer to Table 2-16).

K = 1.03 (Refer to Table 2-17).

Kc = Kθ×K = 0.99 × 1.03 = 1.02

Pc = (Ps + Pa) × Kc = (9.42 + 0.85) × 1.02 = 10.48 kW nb = Pd = 48.1 = 4.6 5 pcs.

Pc 10.48

Design Flow

7

Installation and take-up allowance.

Installation and take-up allowance are obtained from Table 2-18.

Installation allowance = 25 mm

Minimum center distance = 1505 - 25 = 1480 mm

Take-up allowance = 60 mm

Maximum center distance = 1505 + 60 = 1565 mm

Summary

Belt : 5V-1500, 5 pcs.

Driver pulley : 192-5V-5 (Effective diameter = 192mm, 5 grooves)

Driven pulley : 315-5V-5 (Effective diameter = 315mm, 5 grooves)

Center distance : 1505mm ( +60mm / -25mm )

2

Design

2-18

Formulas for V-Belt drives design

Item Formula

Design power

Pd = Pt × Ks

Pd : Design power (kW)

Pt : Transmission power (kW)

Ks : Service factor

Term

2

Design

Service factor

Power rating

Correction power rating

Speed ratio

Interim effective length

Effective length

Center distance

Arc of contact

Number of belts

Ks = Ko + Ki + Ke

Pr = Ps + Pa

Pc = Pr × K × K

SR = = nD

Dp dp

Le' = 2C' + 1.57(De + de)

Ks : Service factor

Ko : Service correction factor

Ki : Idler correction factor

Ke : Environment correction factor

Pr : Power rating (kW)

Ps : Basic power rating (kW)

Pa : Additional power rating for speed ratio (kW)

Pc : Correction power rating (kW)

Pr : Power rating (kW)

K : Belt length correction factor

K : Arc of contact correction factor

SR : Speed ratio

nd : Small pulley speed (rpm)

nD : Large pulley speed (rpm)

Dp : Large pulley pitch diameter (mm)

dp : Small pulley pitch diameter (mm)

Le' : Interim effective length (mm)

C' : Interim center distance (mm)

De : Large pulley effective diameter (mm)

de : Small pulley effective diameter (mm)

(De + de)

2

(De − de)

4C

2

Le = 2C + −−−−−−−−−− + −−−−−−−−−−

Le : Effective length (mm)

C : Center distance (mm)

De : Large pulley effective diameter (mm)

de : Small pulley effective diameter (mm)

: 3.1416

C = b + b 2 − 8 (De − de) 2

8 b = 2Le − (De + de)

C : Center distance (mm)

De : Large pulley effective diameter (mm)

de : Small pulley effective diameter (mm)

Le : Effective length (mm)

: 3.1416

= 180˚ − nb =

Pd

Pc

57.3(De−de)

C

: Arc of contact for small pulley (°)

De : Large pulley effective diameter (mm)

de : Small pulley effective diameter (mm)

C : Center distance (mm)

nb : Number of belts

Pd : Design power (kW)

Pc : Correction power rating (kW)

Table 2-19

2-19

Torque

Item

Belt speed

Transmission power

Transmission power

Effective tension

Effective tension

Tight side tension

Slack side tension

Tension ratio

Pt =

Te × V

1000

Formula

V =

× dp × n

60 × 1000 d

=

Pt =

Tq × n

9.55×10

3

Te = × 1000 dp

Te =

1000×Pt

V dp

Tq = Te × ×

2

1

1000 dp × n d

19100

1000×Pd 2.5

Tt = × + W × V 2 n b × V 2 × K

Term

V : Belt speed (m/sec.)

dp : Small pulley pitch diameter (mm)

nd : Small pulley speed (rpm)

Pt : Transmission power (kW)

Te : Effective tension (N)

V : Belt speed (m/sec.)

Pt : Transmission power (kW)

Tq : Torque (N•m)

n : Pulley speed (rpm)

Te : Effective tension (N)

Tq : Torque (N•m)

dp : Small pulley pitch diameter (mm)

Te : Effective tension (N)

Pt : Transmission power (kW)

V : Belt speed (m/sec.)

Tq : Torque (N•m)

Te : Effective tension (N)

dp : Small pulley pitch diameter (mm)

Tt : Tight side tension (N)

Pd : Design power (kW)

nb : Number of belts

V : Belt speed (m/sec.)

K : Arc of contact correction factor

W : Belt weight per unit (kg/m)

1000×Pd 2.5−2×K

2 n b × V 2 × K

Ts : Slack side tension (N)

Pd : Design power (kW)

nb : Number of belts

V : Belt speed (m/sec.)

K : Arc of contact correction factor

W : Belt weight per unit (kg/m)

TR =

Tt

Ts

TR : Tension ratio

Tt : Tight side tension (N)

Ts : Slack side tension (N)

Minimum static tension

Static shaft load

To : Minimum static tension (N)

K : Arc of contact correction factor

To = 0.9

{

(2.5−K )Pd

500 × + W × V 2

}

Pd : Design power (kW)

nb : Number of belts

K × n b × V

V : Belt speed (m/sec.)

W : Belt weight per unit (kg/m)

Fs = 1.5 (2 n b × To × sin )

2

Fs : Static shaft load (N)

nb : Number of belts

To : Minimum static tension (N)

: Arc of contact for small pulley (° )

Span length

Ls = C

(De − de) 2

2 −

4

Ls : Span length (mm)

C : Center distance (mm)

De : Large pulley effective diameter (mm)

de : Small pulley effective diameter (mm)

Table 2-19

2

Design

2-20

5 Calculation of V-belt drives design

Power Rating Table

Z-Section Power Rating

2

Design

Table 2-20 small pulley speed nd(rpm)

Basic power rating for small pulley datum diameter : Ps

Small pulley datum diameter dd (mm)

56 63 71 75 80 90 45 50 100 112

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

4600

4700

4800

4900

5000

6600

6800

7000

7200

7400

7600

7800

8000

8200

8400

5100

5200

5300

5400

5500

5600

5800

6000

6200

6400

700

950

1450

2850

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

100

200

300

400

500

600

700

800

900

1000

2100

2200

2300

2400

2500

0.17 0.22 0.28 0.34 0.41 0.45 0.49 0.58 0.66 0.76

0.21 0.28 0.35 0.43 0.53 0.57 0.63 0.74 0.85 0.99

0.28 0.37 0.48 0.60 0.73 0.80 0.88 1.04 1.20 1.39

0.42 0.58 0.76 0.97 1.21 1.32 1.46 1.74 2.00 2.31

0.04 0.05 0.06 0.07 0.08 0.09 0.09 0.11 0.12 0.14

0.07 0.08 0.10 0.12 0.14 0.16 0.17 0.20 0.23 0.26

0.09 0.11 0.14 0.17 0.20 0.22 0.24 0.28 0.32 0.37

0.11 0.14 0.18 0.22 0.26 0.28 0.31 0.36 0.41 0.48

0.14 0.17 0.21 0.26 0.31 0.34 0.37 0.44 0.50 0.58

0.15 0.20 0.24 0.30 0.36 0.39 0.43 0.51 0.58 0.67

0.17 0.22 0.28 0.34 0.41 0.45 0.49 0.58 0.66 0.76

0.19 0.24 0.31 0.38 0.46 0.50 0.55 0.64 0.74 0.85

0.21 0.27 0.33 0.41 0.50 0.55 0.60 0.71 0.82 0.94

0.22 0.29 0.36 0.45 0.55 0.60 0.66 0.77 0.89 1.03

0.24 0.31 0.39 0.48 0.59 0.64 0.71 0.84 0.96 1.11

0.25 0.33 0.42 0.52 0.63 0.69 0.76 0.90 1.03 1.19

0.27 0.35 0.44 0.55 0.67 0.73 0.81 0.96 1.10 1.27

0.28 0.36 0.47 0.58 0.71 0.78 0.86 1.01 1.17 1.35

0.29 0.38 0.49 0.61 0.75 0.82 0.90 1.07 1.24 1.43

0.30 0.40 0.51 0.64 0.79 0.86 0.95 1.13 1.30 1.50

0.31 0.42 0.54 0.67 0.83 0.90 1.00 1.18 1.36 1.58

0.33 0.43 0.56 0.70 0.86 0.94 1.04 1.24 1.43 1.65

0.34 0.45 0.58 0.73 0.90 0.98 1.09 1.29 1.49 1.72

0.35 0.46 0.60 0.76 0.93 1.02 1.13 1.34 1.55 1.79

0.36 0.48 0.62 0.79 0.97 1.06 1.17 1.39 1.60 1.85

0.37 0.49 0.64 0.81 1.00 1.10 1.21 1.44 1.66 1.92

0.38 0.51 0.66 0.84 1.04 1.13 1.25 1.49 1.72 1.98

0.38 0.52 0.68 0.86 1.07 1.17 1.29 1.54 1.77 2.05

0.39 0.53 0.70 0.89 1.10 1.20 1.33 1.58 1.83 2.11

0.40 0.55 0.72 0.91 1.13 1.24 1.37 1.63 1.88 2.17

0.41 0.56 0.74 0.94 1.16 1.27 1.41 1.67 1.93 2.23

0.42 0.57 0.75 0.96 1.19 1.30 1.44 1.72 1.98 2.28

0.42 0.58 0.77 0.98 1.22 1.34 1.48 1.76 2.03 2.34

0.43 0.59 0.79 1.01 1.25 1.37 1.52 1.80 2.08 2.39

0.44 0.61 0.80 1.03 1.28 1.40 1.55 1.84 2.12 2.44

0.44 0.62 0.82 1.05 1.30 1.43 1.58 1.88 2.17 2.49

0.45 0.63 0.83 1.07 1.33 1.46 1.62 1.92 2.21 2.54

0.46 0.64 0.85 1.09 1.36 1.49 1.65 1.96 2.25 2.59

0.46 0.65 0.86 1.11 1.38 1.52 1.68 2.00 2.30 2.64

0.47 0.66 0.88 1.13 1.41 1.54 1.71 2.03 2.34 2.68

0.47 0.67 0.89 1.15 1.43 1.57 1.74 2.07 2.38 2.72

0.48 0.67 0.91 1.17 1.46 1.60 1.77 2.10 2.41 2.77

0.48 0.68 0.92 1.19 1.48 1.62 1.80 2.13 2.45 2.81

0.49 0.69 0.93 1.20 1.50 1.65 1.83 2.17 2.49 2.84

0.49 0.70 0.94 1.22 1.53 1.67 1.85 2.20 2.52 2.88

0.49 0.71 0.96 1.24 1.55 1.70 1.88 2.23 2.55 2.91

0.50 0.71 0.97 1.25 1.57 1.72 1.90 2.26 2.58 2.95

0.50 0.72 0.98 1.27 1.59 1.74 1.93 2.28 2.62 2.98

0.50 0.73 0.99 1.28 1.61 1.76 1.95 2.31 2.64 3.01

0.51 0.73 1.00 1.30 1.63 1.78 1.97 2.34 2.67 3.04

0.51 0.74 1.01 1.31 1.65 1.80 2.00 2.36 2.70 3.06

0.51 0.75 1.02 1.33 1.66 1.82 2.02 2.39 2.72 3.08

0.51 0.75 1.03 1.34 1.68 1.84 2.04 2.41 2.75 3.11

0.51 0.76 1.04 1.35 1.70 1.86 2.06 2.43 2.77 3.13

0.52 0.76 1.05 1.37 1.71 1.88 2.08 2.45 2.79 3.14

0.52 0.77 1.06 1.38 1.73 1.90 2.10 2.47 2.81 3.16

0.52 0.77 1.06 1.39 1.74 1.91 2.11 2.49 2.83 3.18

0.52 0.78 1.07 1.40 1.76 1.93 2.13 2.51 2.84 3.19

0.52 0.78 1.08 1.41 1.77 1.94 2.15 2.52 2.86 3.20

0.52 0.78 1.09 1.42 1.78 1.96 2.16 2.54 2.87 3.21

0.52 0.79 1.10 1.44 1.81 1.98 2.19 2.56 2.89 3.22

0.52 0.79 1.11 1.46 1.83 2.00 2.21 2.59 2.91 3.22

0.52 0.80 1.12 1.47 1.85 2.02 2.23 2.60 2.92 3.21

0.51 0.80 1.13 1.49 1.86 2.04 2.25 2.61 2.92 3.20

0.51 0.80 1.13 1.50 1.88 2.05 2.26 2.62 2.92 3.17

0.51 0.80 1.14 1.50 1.89 2.06 2.27 2.62 2.91 3.14

0.50 0.80 1.14 1.51 1.89 2.07 2.27 2.62 2.89 -

0.49 0.80 1.14 1.52 1.90 2.07 2.27 2.61 2.86 -

0.49 0.79 1.14 1.52 1.90 2.07 2.27 2.60 2.83 -

0.48 0.79 1.14 1.52 1.90 2.07 2.26 2.58 2.79 -

0.47 0.78 1.14 1.52 1.90 2.06 2.25 2.55 -

0.46 0.78 1.13 1.51 1.89 2.05 2.24 2.52 -

0.44 0.77 1.13 1.51 1.88 2.04 2.22 2.48 -

0.43 0.76 1.12 1.50 1.86 2.02 2.19 2.44 -

-

-

-

-

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

[kW]

Additional power rating for speed ratio (Pa)

Speed ratio

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.00 0.02 0.03 0.03

0.00 0.02 0.04 0.04

0.01 0.04 0.05 0.07

0.01 0.07 0.11 0.13

0.00 0.00 0.00 0.00

0.00 0.01 0.01 0.01

0.00 0.01 0.01 0.01

0.00 0.01 0.01 0.02

0.00 0.01 0.02 0.02

0.00 0.02 0.02 0.03

0.00 0.02 0.03 0.03

0.00 0.02 0.03 0.04

0.00 0.02 0.03 0.04

0.00 0.03 0.04 0.05

0.00 0.03 0.04 0.05

0.00 0.03 0.04 0.06

0.01 0.03 0.05 0.06

0.01 0.04 0.05 0.06

0.01 0.04 0.06 0.07

0.01 0.04 0.06 0.07

0.01 0.04 0.06 0.08

0.01 0.05 0.07 0.08

0.01 0.05 0.07 0.09

0.01 0.05 0.07 0.09

0.01 0.06 0.08 0.10

0.01 0.06 0.08 0.10

0.01 0.06 0.09 0.11

0.01 0.06 0.09 0.11

0.01 0.07 0.09 0.11

0.01 0.07 0.10 0.12

0.01 0.07 0.10 0.12

0.01 0.07 0.10 0.13

0.01 0.08 0.11 0.13

0.01 0.08 0.11 0.14

0.01 0.08 0.12 0.14

0.01 0.08 0.12 0.15

0.01 0.09 0.12 0.15

0.01 0.09 0.13 0.16

0.01 0.09 0.13 0.16

0.01 0.09 0.13 0.17

0.02 0.10 0.14 0.17

0.02 0.10 0.14 0.17

0.02 0.10 0.15 0.18

0.02 0.11 0.15 0.18

0.02 0.11 0.15 0.19

0.02 0.11 0.16 0.19

0.02 0.11 0.16 0.20

0.02 0.12 0.16 0.20

0.02 0.12 0.17 0.21

0.02 0.12 0.17 0.21

0.02 0.12 0.18 0.22

0.02 0.13 0.18 0.22

0.02 0.13 0.18 0.22

0.02 0.13 0.19 0.23

0.02 0.13 0.19 0.23

0.02 0.14 0.19 0.24

0.02 0.14 0.20 0.24

0.02 0.14 0.20 0.25

0.02 0.14 0.21 0.25

0.02 0.15 0.21 0.26

0.02 0.15 0.22 0.27

0.02 0.16 0.22 0.28

0.03 0.16 0.23 0.28

0.03 0.17 0.24 0.29

0.03 0.17 0.25 0.30

0.03 0.18 0.25 0.31

0.03 0.18 0.26 0.32

0.03 0.19 0.27 0.33

0.03 0.19 0.28 0.34

0.03 0.20 0.28 0.35

0.03 0.20 0.29 0.36

0.03 0.21 0.30 0.37

0.03 0.22 0.31 0.38

0.03 0.22 0.31 0.39

2-21

Calculation of V-belt drives design

Power Rating Table

5

ZX-Section Power Rating

Table 2-21 small pulley speed nd(rpm)

Basic power rating for small pulley datum diameter : Ps

Small pulley datum diameter dd (mm)

50 56 63 71 75 80 90 40 45 100 112

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

4600

4700

4800

4900

5000

6600

6800

7000

7200

7400

7600

7800

8000

8200

8400

5100

5200

5300

5400

5500

5600

5800

6000

6200

6400

700

950

1450

2850

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

100

200

300

400

500

600

700

800

900

1000

2100

2200

2300

2400

2500

0.21 0.26 0.31 0.36 0.43 0.50 0.53 0.58 0.66 0.75 0.85

0.26 0.32 0.39 0.46 0.54 0.63 0.68 0.74 0.85 0.96 1.08

0.35 0.44 0.52 0.63 0.74 0.88 0.94 1.02 1.18 1.33 1.50

0.52 0.68 0.83 1.00 1.20 1.42 1.53 1.66 1.91 2.15 2.43

0.05 0.05 0.06 0.07 0.09 0.10 0.11 0.11 0.13 0.15 0.17

0.08 0.10 0.11 0.13 0.15 0.18 0.19 0.21 0.24 0.27 0.30

0.11 0.13 0.16 0.18 0.22 0.25 0.27 0.29 0.33 0.37 0.42

0.14 0.17 0.20 0.23 0.27 0.32 0.34 0.37 0.42 0.47 0.54

0.16 0.20 0.24 0.28 0.33 0.38 0.41 0.44 0.51 0.57 0.65

0.19 0.23 0.27 0.32 0.38 0.44 0.47 0.51 0.59 0.66 0.75

0.21 0.26 0.31 0.36 0.43 0.50 0.53 0.58 0.66 0.75 0.85

0.23 0.29 0.34 0.40 0.47 0.55 0.59 0.64 0.74 0.83 0.95

0.25 0.31 0.37 0.44 0.52 0.61 0.65 0.71 0.81 0.92 1.04

0.27 0.34 0.40 0.48 0.56 0.66 0.71 0.77 0.88 1.00 1.13

0.29 0.36 0.43 0.51 0.60 0.71 0.76 0.83 0.95 1.07 1.22

0.31 0.38 0.46 0.55 0.65 0.76 0.81 0.88 1.02 1.15 1.30

0.32 0.41 0.48 0.58 0.69 0.81 0.87 0.94 1.08 1.22 1.38

0.34 0.43 0.51 0.61 0.73 0.85 0.92 0.99 1.14 1.29 1.47

0.36 0.45 0.54 0.64 0.76 0.90 0.96 1.05 1.21 1.36 1.54

0.37 0.47 0.56 0.67 0.80 0.94 1.01 1.10 1.27 1.43 1.62

0.39 0.49 0.59 0.70 0.84 0.99 1.06 1.15 1.32 1.50 1.70

0.40 0.51 0.61 0.73 0.87 1.03 1.10 1.20 1.38 1.56 1.77

0.41 0.52 0.63 0.76 0.91 1.07 1.15 1.25 1.44 1.62 1.84

0.43 0.54 0.66 0.79 0.94 1.11 1.19 1.29 1.49 1.69 1.91

0.44 0.56 0.68 0.82 0.97 1.15 1.23 1.34 1.55 1.75 1.98

0.45 0.58 0.70 0.84 1.01 1.19 1.28 1.39 1.60 1.80 2.04

0.46 0.59 0.72 0.87 1.04 1.23 1.32 1.43 1.65 1.86 2.11

0.47 0.61 0.74 0.89 1.07 1.26 1.36 1.47 1.70 1.92 2.17

0.49 0.62 0.76 0.92 1.10 1.30 1.40 1.52 1.75 1.97 2.23

0.50 0.64 0.78 0.94 1.13 1.33 1.43 1.56 1.80 2.02 2.29

0.51 0.65 0.80 0.97 1.16 1.37 1.47 1.60 1.84 2.08 2.34

0.52 0.67 0.82 0.99 1.19 1.40 1.51 1.64 1.89 2.13 2.40

0.53 0.68 0.83 1.01 1.21 1.44 1.54 1.68 1.93 2.18 2.45

0.54 0.70 0.85 1.03 1.24 1.47 1.58 1.71 1.97 2.22 2.50

0.55 0.71 0.87 1.06 1.27 1.50 1.61 1.75 2.02 2.27 2.55

0.55 0.72 0.89 1.08 1.29 1.53 1.65 1.79 2.06 2.31 2.60

0.56 0.74 0.90 1.10 1.32 1.56 1.68 1.82 2.10 2.36 2.65

0.57 0.75 0.92 1.12 1.34 1.59 1.71 1.86 2.13 2.40 2.70

0.58 0.76 0.93 1.14 1.37 1.62 1.74 1.89 2.17 2.44 2.74

0.59 0.77 0.95 1.16 1.39 1.65 1.77 1.92 2.21 2.48 2.78

0.59 0.78 0.96 1.18 1.41 1.67 1.80 1.95 2.24 2.52 2.82

0.60 0.79 0.98 1.19 1.44 1.70 1.83 1.98 2.28 2.55 2.86

0.61 0.80 0.99 1.21 1.46 1.73 1.86 2.01 2.31 2.59 2.89

0.61 0.81 1.01 1.23 1.48 1.75 1.88 2.04 2.34 2.62 2.93

0.62 0.82 1.02 1.25 1.50 1.78 1.91 2.07 2.37 2.66 2.96

0.63 0.83 1.03 1.26 1.52 1.80 1.93 2.10 2.40 2.69 2.99

0.63 0.84 1.04 1.28 1.54 1.82 1.96 2.12 2.43 2.72 3.02

0.64 0.85 1.06 1.29 1.56 1.85 1.98 2.15 2.46 2.74 3.05

0.64 0.86 1.07 1.31 1.58 1.87 2.01 2.17 2.49 2.77 3.07

0.65 0.87 1.08 1.32 1.60 1.89 2.03 2.20 2.51 2.80 3.09

0.65 0.88 1.09 1.34 1.61 1.91 2.05 2.22 2.54 2.82 3.12

0.66 0.88 1.10 1.35 1.63 1.93 2.07 2.24 2.56 2.84 3.13

0.66 0.89 1.11 1.37 1.65 1.95 2.09 2.26 2.58 2.86 3.15

0.67 0.90 1.12 1.38 1.66 1.97 2.11 2.28 2.60 2.88 3.17

0.67 0.91 1.13 1.39 1.68 1.99 2.13 2.30 2.62 2.90 3.18

0.67 0.91 1.14 1.40 1.69 2.00 2.15 2.32 2.64 2.91 3.19

0.68 0.92 1.15 1.42 1.71 2.02 2.16 2.34 2.65 2.93 3.20

0.68 0.92 1.16 1.43 1.72 2.03 2.18 2.35 2.67 2.94 3.21

0.68 0.93 1.17 1.44 1.73 2.05 2.20 2.37 2.68 2.95 3.21

0.69 0.94 1.18 1.45 1.75 2.06 2.21 2.38 2.70 2.96 3.21

0.69 0.95 1.19 1.47 1.77 2.09 2.24 2.41 2.72 2.98 3.21

0.69 0.96 1.20 1.49 1.79 2.11 2.26 2.43 2.74 2.98 3.20

0.70 0.96 1.22 1.50 1.81 2.13 2.28 2.45 2.75 2.99 3.18

0.70 0.97 1.23 1.52 1.83 2.15 2.30 2.47 2.76 2.98 3.15

0.70 0.98 1.24 1.53 1.84 2.17 2.31 2.48 2.76 2.97 3.11

0.70 0.98 1.24 1.54 1.86 2.18 2.32 2.48 2.76 2.95 3.06

0.70 0.98 1.25 1.55 1.87 2.19 2.33 2.49 2.75 2.92 -

0.70 0.99 1.26 1.56 1.87 2.19 2.33 2.49 2.73 2.88 -

0.70 0.99 1.26 1.56 1.88 2.19 2.33 2.48 2.71 2.84 -

0.69 0.99 1.26 1.57 1.88 2.19 2.33 2.47 2.68 2.79 -

0.69 0.99 1.26 1.57 1.88 2.19 2.32 2.46 2.65 -

0.68 0.99 1.26 1.57 1.88 2.18 2.31 2.44 2.61 -

0.68 0.98 1.26 1.57 1.88 2.17 2.29 2.41 2.57 -

0.67 0.98 1.26 1.56 1.87 2.16 2.27 2.39 2.52 -

-

-

-

-

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

[kW]

Additional power rating for speed ratio (Pa)

Speed ratio

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.00 0.01 0.02 0.03

0.00 0.02 0.03 0.03

0.00 0.03 0.04 0.05

0.01 0.06 0.08 0.10

0.00 0.00 0.00 0.00

0.00 0.00 0.01 0.01

0.00 0.01 0.01 0.01

0.00 0.01 0.01 0.01

0.00 0.01 0.01 0.02

0.00 0.01 0.02 0.02

0.00 0.01 0.02 0.03

0.00 0.02 0.02 0.03

0.00 0.02 0.03 0.03

0.00 0.02 0.03 0.04

0.00 0.02 0.03 0.04

0.00 0.03 0.04 0.04

0.00 0.03 0.04 0.05

0.00 0.03 0.04 0.05

0.00 0.03 0.04 0.05

0.01 0.03 0.05 0.06

0.01 0.04 0.05 0.06

0.01 0.04 0.05 0.07

0.01 0.04 0.06 0.07

0.01 0.04 0.06 0.07

0.01 0.04 0.06 0.08

0.01 0.05 0.07 0.08

0.01 0.05 0.07 0.08

0.01 0.05 0.07 0.09

0.01 0.05 0.07 0.09

0.01 0.05 0.08 0.09

0.01 0.06 0.08 0.10

0.01 0.06 0.08 0.10

0.01 0.06 0.09 0.11

0.01 0.06 0.09 0.11

0.01 0.06 0.09 0.11

0.01 0.07 0.09 0.12

0.01 0.07 0.10 0.12

0.01 0.07 0.10 0.12

0.01 0.07 0.10 0.13

0.01 0.08 0.11 0.13

0.01 0.08 0.11 0.13

0.01 0.08 0.11 0.14

0.01 0.08 0.12 0.14

0.01 0.08 0.12 0.15

0.01 0.09 0.12 0.15

0.01 0.09 0.12 0.15

0.01 0.09 0.13 0.16

0.01 0.09 0.13 0.16

0.01 0.09 0.13 0.16

0.01 0.10 0.14 0.17

0.02 0.10 0.14 0.17

0.02 0.10 0.14 0.17

0.02 0.10 0.15 0.18

0.02 0.10 0.15 0.18

0.02 0.11 0.15 0.19

0.02 0.11 0.15 0.19

0.02 0.11 0.16 0.19

0.02 0.11 0.16 0.20

0.02 0.11 0.16 0.20

0.02 0.12 0.17 0.20

0.02 0.12 0.17 0.21

0.02 0.13 0.18 0.22

0.02 0.13 0.18 0.23

0.02 0.13 0.19 0.23

0.02 0.14 0.20 0.24

0.02 0.14 0.20 0.25

0.02 0.15 0.21 0.26

0.02 0.15 0.21 0.26

0.02 0.15 0.22 0.27

0.02 0.16 0.23 0.28

0.03 0.16 0.23 0.28

0.03 0.17 0.24 0.29

0.03 0.17 0.24 0.30

0.03 0.18 0.25 0.31

2

Design

2-22

5 Calculation of V-belt drives design

Power Rating Table

A/13-Section Power Rating

2

Design

Table 2-22 small pulley speed nd(rpm)

700

950

1450

2850

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

5100

5200

5300

5400

5500

5600

5800

6000

71 75 80

Basic power rating for small pulley datum diameter : Ps

90

Small pulley datum diameter dd (mm)

95 100 106 112 118 125 132 140 150 160 180

0.51 0.61 0.73 0.96 1.08 1.20 1.34 1.48 1.62 1.78 1.94 2.12 2.34 2.56 3.00

0.62 0.75 0.91 1.22 1.37 1.53 1.71 1.89 2.07 2.28 2.49 2.72 3.02 3.30 3.87

0.80 0.98 1.21 1.66 1.89 2.11 2.37 2.63 2.89 3.18 3.48 3.81 4.22 4.62 5.40

1.04 1.36 1.75 2.52 2.90 3.27 3.70 4.12 4.53 4.99 5.44 5.93 6.51 7.06 8.04

0.12 0.13 0.16 0.20 0.22 0.24 0.26 0.28 0.31 0.33 0.36 0.39 0.43 0.47 0.55

0.20 0.24 0.27 0.35 0.39 0.43 0.47 0.52 0.56 0.61 0.66 0.72 0.80 0.87 1.01

0.28 0.32 0.38 0.49 0.54 0.60 0.66 0.73 0.79 0.87 0.94 1.03 1.13 1.24 1.45

0.34 0.40 0.47 0.62 0.69 0.76 0.85 0.93 1.01 1.11 1.21 1.32 1.45 1.59 1.86

0.40 0.48 0.56 0.74 0.83 0.91 1.02 1.12 1.22 1.34 1.46 1.59 1.76 1.93 2.25

0.46 0.54 0.65 0.86 0.96 1.06 1.18 1.30 1.42 1.56 1.70 1.86 2.06 2.25 2.63

0.51 0.61 0.73 0.96 1.08 1.20 1.34 1.48 1.62 1.78 1.94 2.12 2.34 2.56 3.00

0.56 0.67 0.80 1.07 1.20 1.33 1.49 1.65 1.80 1.98 2.16 2.37 2.62 2.87 3.36

0.60 0.72 0.87 1.17 1.32 1.46 1.64 1.81 1.99 2.18 2.38 2.61 2.88 3.16 3.70

0.64 0.78 0.94 1.27 1.43 1.59 1.78 1.97 2.16 2.38 2.60 2.84 3.14 3.44 4.03

0.68 0.83 1.01 1.36 1.54 1.71 1.92 2.13 2.33 2.57 2.80 3.07 3.40 3.72 4.36

0.72 0.87 1.07 1.45 1.64 1.83 2.05 2.28 2.50 2.75 3.00 3.29 3.64 3.99 4.67

0.75 0.92 1.13 1.54 1.74 1.94 2.18 2.42 2.66 2.93 3.20 3.50 3.88 4.25 4.97

0.78 0.96 1.19 1.62 1.84 2.05 2.31 2.56 2.81 3.10 3.39 3.71 4.11 4.50 5.26

0.81 1.00 1.24 1.70 1.93 2.16 2.43 2.70 2.96 3.27 3.57 3.91 4.33 4.74 5.54

0.84 1.04 1.29 1.78 2.02 2.26 2.55 2.83 3.11 3.43 3.75 4.10 4.54 4.97 5.80

0.87 1.08 1.34 1.86 2.11 2.36 2.66 2.96 3.25 3.59 3.92 4.29 4.75 5.19 6.06

0.89 1.11 1.39 1.93 2.20 2.46 2.77 3.08 3.39 3.74 4.08 4.47 4.95 5.41 6.30

0.91 1.15 1.43 2.00 2.28 2.55 2.88 3.20 3.52 3.88 4.24 4.64 5.14 5.61 6.53

0.93 1.18 1.48 2.07 2.36 2.64 2.98 3.32 3.64 4.02 4.39 4.81 5.32 5.81 6.75

0.95 1.20 1.52 2.13 2.43 2.73 3.08 3.43 3.77 4.16 4.54 4.97 5.49 6.00 6.95

0.97 1.23 1.56 2.19 2.50 2.81 3.18 3.53 3.89 4.29 4.68 5.12 5.66 6.17 7.15

0.98 1.26 1.59 2.25 2.57 2.89 3.27 3.64 4.00 4.41 4.82 5.27 5.81 6.34 7.32

1.00 1.28 1.63 2.31 2.64 2.97 3.35 3.73 4.11 4.53 4.95 5.41 5.96 6.50 7.49

1.01 1.30 1.66 2.36 2.70 3.04 3.44 3.83 4.21 4.64 5.07 5.54 6.10 6.64 7.64

1.02 1.32 1.69 2.41 2.76 3.11 3.52 3.92 4.31 4.75 5.18 5.66 6.23 6.78 7.77

1.03 1.34 1.72 2.46 2.82 3.17 3.59 4.00 4.40 4.85 5.29 5.77 6.35 6.90 7.89

1.03 1.35 1.74 2.50 2.87 3.24 3.66 4.08 4.49 4.95 5.39 5.88 6.46 7.01 8.00

1.04 1.36 1.77 2.54 2.92 3.30 3.73 4.16 4.57 5.04 5.49 5.98 6.56 7.11 8.08

1.04 1.38 1.79 2.58 2.97 3.35 3.79 4.23 4.65 5.12 5.57 6.07 6.65 7.20 8.15

1.04 1.39 1.81 2.62 3.02 3.40 3.85 4.29 4.72 5.19 5.65 6.15 6.74 7.27 8.21

1.04 1.39 1.82 2.65 3.06 3.45 3.91 4.35 4.78 5.26 5.72 6.22 6.81 7.34 8.25

1.04 1.40 1.84 2.69 3.09 3.49 3.96 4.41 4.84 5.33 5.79 6.29 6.86 7.39 8.26

1.04 1.40 1.85 2.71 3.13 3.53 4.00 4.46 4.90 5.38 5.85 6.34 6.91 7.42 8.26

1.03 1.40 1.86 2.74 3.16 3.57 4.05 4.50 4.94 5.43 5.89 6.39 6.95 7.45 8.25

1.02 1.40 1.87 2.76 3.19 3.60 4.08 4.54 4.99 5.47 5.93 6.42 6.97 7.46 8.21

1.02 1.40 1.87 2.78 3.21 3.63 4.11 4.58 5.02 5.51 5.97 6.45 6.99 7.45 8.15

1.01 1.40 1.88 2.79 3.23 3.65 4.14 4.61 5.05 5.54 5.99 6.46 6.99 7.44 8.07

0.99 1.39 1.88 2.81 3.25 3.67 4.16 4.63 5.07 5.56 6.00 6.47 6.98 7.40 7.98

0.98 1.38 1.88 2.81 3.26 3.69 4.18 4.65 5.09 5.57 6.01 6.46 6.95 7.35 7.86

0.96 1.37 1.87 2.82 3.27 3.70 4.20 4.66 5.10 5.57 6.01 6.45 6.92 7.29 7.72

0.94 1.36 1.87 2.82 3.28 3.71 4.20 4.67 5.10 5.57 6.00 6.42 6.87 7.21 7.55

0.92 1.35 1.86 2.82 3.28 3.71 4.21 4.67 5.10 5.56 5.97 6.39 6.81 7.11 -

0.90 1.33 1.84 2.82 3.27 3.71 4.20 4.66 5.09 5.54 5.94 6.34 6.73 7.00 -

0.88 1.31 1.83 2.81 3.27 3.70 4.20 4.65 5.07 5.51 5.90 6.28 6.64 6.87 -

0.85 1.29 1.81 2.80 3.26 3.69 4.18 4.63 5.05 5.48 5.85 6.21 6.53 6.73 -

0.83 1.27 1.80 2.79 3.24 3.68 4.16 4.61 5.01 5.43 5.79 6.12 6.42 6.56 -

0.80 1.24 1.77 2.77 3.23 3.66 4.14 4.58 4.98 5.38 5.72 6.03 6.28 -

0.77 1.21 1.75 2.75 3.20 3.63 4.11 4.54 4.93 5.32 5.64 5.92 6.13 -

0.73 1.18 1.72 2.72 3.18 3.60 4.07 4.50 4.87 5.25 5.55 5.80 5.97 -

0.70 1.15 1.69 2.69 3.15 3.57 4.03 4.45 4.81 5.17 5.45 5.67 -

0.66 1.12 1.66 2.66 3.11 3.53 3.98 4.39 4.74 5.08 5.33 5.52 -

-

-

-

-

-

0.62 1.08 1.62 2.62 3.07 3.48 3.93 4.32 4.66 4.98 5.21 5.36 -

0.58 1.04 1.59 2.58 3.03 3.43 3.87 4.25 4.57 4.87 5.07 5.19 -

0.54 1.00 1.55 2.54 2.98 3.38 3.81 4.17 4.48 4.75 4.93 -

0.49 0.95 1.50 2.49 2.92 3.32 3.73 4.09 4.37 4.62 4.77 -

0.39 0.86 1.41 2.38 2.80 3.18 3.57 3.89 4.14 4.33 -

0.29 0.75 1.30 2.25 2.66 3.02 3.38 3.67 3.87 4.00 -

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

[kW]

Additional power rating for speed ratio (Pa)

Speed ratio

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.01 0.08 0.12 0.15

0.02 0.11 0.16 0.20

0.03 0.18 0.25 0.31

0.05 0.34 0.49 0.60

0.00 0.01 0.02 0.02

0.00 0.02 0.03 0.04

0.01 0.04 0.05 0.06

0.01 0.05 0.07 0.08

0.01 0.06 0.09 0.11

0.01 0.07 0.10 0.13

0.01 0.08 0.12 0.15

0.01 0.10 0.14 0.17

0.02 0.11 0.15 0.19

0.02 0.12 0.17 0.21

0.02 0.13 0.19 0.23

0.02 0.15 0.21 0.25

0.02 0.16 0.22 0.27

0.03 0.17 0.24 0.30

0.03 0.18 0.26 0.32

0.03 0.19 0.27 0.34

0.03 0.21 0.29 0.36

0.03 0.22 0.31 0.38

0.04 0.23 0.33 0.40

0.04 0.24 0.34 0.42

0.04 0.25 0.36 0.44

0.04 0.27 0.38 0.46

0.04 0.28 0.39 0.49

0.04 0.29 0.41 0.51

0.05 0.30 0.43 0.53

0.05 0.31 0.45 0.55

0.05 0.33 0.46 0.57

0.05 0.34 0.48 0.59

0.05 0.35 0.50 0.61

0.06 0.36 0.51 0.63

0.06 0.37 0.53 0.65

0.06 0.39 0.55 0.68

0.06 0.40 0.57 0.70

0.06 0.41 0.58 0.72

0.07 0.42 0.60 0.74

0.07 0.44 0.62 0.76

0.07 0.45 0.64 0.78

0.07 0.46 0.65 0.80

0.07 0.47 0.67 0.82

0.07 0.48 0.69 0.84

0.08 0.50 0.70 0.87

0.08 0.51 0.72 0.89

0.08 0.52 0.74 0.91

0.08 0.53 0.76 0.93

0.08 0.54 0.77 0.95

0.09 0.56 0.79 0.97

0.09 0.57 0.81 0.99

0.09 0.58 0.82 1.01

0.09 0.59 0.84 1.03

0.09 0.60 0.86 1.06

0.10 0.62 0.88 1.08

0.10 0.63 0.89 1.10

0.10 0.64 0.91 1.12

0.10 0.65 0.93 1.14

0.10 0.67 0.94 1.16

0.10 0.68 0.96 1.18

0.11 0.70 1.00 1.22

0.11 0.73 1.03 1.27

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-23

Calculation of V-belt drives design

Power Rating Table

5

AX-Section Power Rating

Table 2-23 small pulley speed nd(rpm)

700

950

1450

2850

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

5100

5200

5300

5400

5500

5600

5700

5800

5900

6000

63 71 80

Basic power rating for small pulley datum diameter : Ps

90

Small pulley datum diameter dd (mm)

95 100 106 112 118 125 132 140 150 160 180

0.68 0.86 1.07 1.29 1.40 1.51 1.64 1.77 1.90 2.05 2.19 2.36 2.56 2.76 3.16

0.82 1.06 1.33 1.62 1.76 1.90 2.07 2.23 2.39 2.58 2.77 2.98 3.24 3.49 3.99

1.05 1.39 1.76 2.17 2.37 2.56 2.80 3.03 3.25 3.51 3.77 4.05 4.41 4.75 5.42

1.39 1.96 2.58 3.24 3.56 3.87 4.23 4.59 4.93 5.32 5.69 6.10 6.59 7.04 7.85

0.16 0.19 0.23 0.28 0.30 0.32 0.34 0.37 0.39 0.42 0.45 0.48 0.52 0.56 0.64

0.28 0.34 0.41 0.49 0.52 0.56 0.61 0.65 0.70 0.75 0.80 0.86 0.93 1.00 1.14

0.37 0.46 0.56 0.67 0.73 0.78 0.85 0.91 0.97 1.04 1.12 1.20 1.30 1.40 1.60

0.46 0.58 0.70 0.84 0.91 0.98 1.06 1.14 1.22 1.32 1.41 1.51 1.64 1.77 2.02

0.54 0.68 0.83 1.00 1.09 1.17 1.27 1.36 1.46 1.57 1.68 1.81 1.96 2.12 2.42

0.61 0.77 0.95 1.15 1.25 1.35 1.46 1.57 1.69 1.82 1.94 2.09 2.27 2.45 2.80

0.68 0.86 1.07 1.29 1.40 1.51 1.64 1.77 1.90 2.05 2.19 2.36 2.56 2.76 3.16

0.74 0.95 1.18 1.43 1.55 1.67 1.82 1.96 2.10 2.27 2.43 2.61 2.84 3.06 3.50

0.79 1.02 1.28 1.55 1.69 1.83 1.98 2.14 2.30 2.48 2.66 2.86 3.11 3.35 3.83

0.85 1.10 1.38 1.68 1.82 1.97 2.15 2.32 2.49 2.68 2.88 3.10 3.36 3.63 4.15

0.90 1.17 1.47 1.79 1.95 2.11 2.30 2.49 2.67 2.88 3.09 3.32 3.61 3.90 4.45

0.94 1.24 1.56 1.91 2.08 2.25 2.45 2.65 2.84 3.07 3.29 3.54 3.85 4.15 4.74

0.99 1.30 1.64 2.01 2.20 2.38 2.59 2.80 3.01 3.25 3.49 3.75 4.08 4.40 5.02

1.03 1.36 1.72 2.12 2.31 2.50 2.73 2.95 3.17 3.43 3.68 3.96 4.30 4.64 5.29

1.07 1.42 1.80 2.22 2.42 2.62 2.86 3.10 3.33 3.60 3.86 4.15 4.51 4.86 5.54

1.11 1.47 1.88 2.31 2.53 2.74 2.99 3.24 3.48 3.76 4.03 4.34 4.72 5.08 5.79

1.14 1.53 1.95 2.41 2.63 2.85 3.11 3.37 3.62 3.92 4.20 4.52 4.91 5.29 6.02

1.17 1.58 2.02 2.50 2.73 2.96 3.23 3.50 3.76 4.07 4.36 4.69 5.10 5.49 6.24

1.20 1.62 2.08 2.58 2.82 3.06 3.35 3.63 3.90 4.21 4.52 4.86 5.28 5.68 6.45

1.23 1.67 2.15 2.66 2.92 3.17 3.46 3.75 4.03 4.35 4.67 5.02 5.45 5.86 6.65

1.25 1.71 2.21 2.74 3.00 3.26 3.56 3.86 4.15 4.49 4.81 5.17 5.61 6.04 6.84

1.28 1.75 2.27 2.82 3.09 3.35 3.67 3.97 4.27 4.62 4.95 5.32 5.77 6.20 7.01

1.30 1.79 2.32 2.89 3.17 3.44 3.77 4.08 4.39 4.74 5.08 5.46 5.92 6.36 7.18

1.32 1.82 2.37 2.96 3.25 3.53 3.86 4.18 4.50 4.86 5.21 5.59 6.06 6.50 7.33

1.34 1.86 2.42 3.03 3.32 3.61 3.95 4.28 4.60 4.97 5.33 5.72 6.19 6.64 7.46

1.36 1.89 2.47 3.09 3.39 3.69 4.04 4.37 4.70 5.08 5.44 5.84 6.31 6.76 7.59

1.37 1.92 2.52 3.15 3.46 3.76 4.12 4.46 4.80 5.18 5.54 5.95 6.43 6.88 7.70

1.39 1.95 2.56 3.21 3.53 3.84 4.20 4.55 4.89 5.27 5.64 6.05 6.54 6.99 7.80

1.40 1.98 2.60 3.27 3.59 3.90 4.27 4.63 4.97 5.36 5.74 6.15 6.63 7.09 7.89

1.41 2.00 2.64 3.32 3.65 3.97 4.34 4.70 5.05 5.45 5.83 6.24 6.72 7.17 7.97

1.42 2.02 2.68 3.37 3.70 4.03 4.41 4.77 5.13 5.53 5.91 6.32 6.80 7.25 8.03

1.43 2.04 2.71 3.42 3.75 4.09 4.47 4.84 5.20 5.60 5.98 6.40 6.88 7.32 8.07

1.43 2.06 2.74 3.46 3.80 4.14 4.53 4.90 5.26 5.67 6.05 6.46 6.94 7.37 8.11

1.44 2.08 2.77 3.50 3.85 4.19 4.58 4.96 5.32 5.73 6.11 6.52 7.00 7.42 8.12

1.44 2.09 2.80 3.54 3.89 4.24 4.63 5.01 5.38 5.78 6.17 6.57 7.04 7.46 8.13

1.44 2.11 2.82 3.57 3.93 4.28 4.68 5.06 5.43 5.83 6.21 6.62 7.08 7.48 8.11

1.44 2.12 2.84 3.61 3.97 4.32 4.72 5.11 5.47 5.88 6.26 6.65 7.10 7.49 8.09

1.44 2.13 2.87 3.64 4.00 4.35 4.76 5.15 5.51 5.91 6.29 6.68 7.12 7.49 8.05

1.44 2.14 2.88 3.66 4.03 4.39 4.79 5.18 5.55 5.95 6.32 6.70 7.13 7.48 7.99

1.43 2.14 2.90 3.69 4.06 4.41 4.82 5.21 5.57 5.97 6.34 6.71 7.12 7.46 7.91

1.43 2.15 2.91 3.71 4.08 4.44 4.85 5.23 5.60 5.99 6.35 6.72 7.11 7.43 7.82

1.42 2.15 2.92 3.72 4.10 4.46 4.87 5.25 5.61 6.00 6.35 6.71 7.09 7.38 7.72

1.41 2.15 2.93 3.74 4.12 4.48 4.89 5.27 5.63 6.01 6.35 6.70 7.05 7.33 -

1.40 2.15 2.94 3.75 4.13 4.49 4.90 5.28 5.63 6.01 6.34 6.68 7.01 7.25 -

1.39 2.15 2.94 3.76 4.14 4.50 4.91 5.28 5.63 6.00 6.33 6.64 6.96 7.17 -

1.38 2.14 2.95 3.77 4.15 4.51 4.91 5.28 5.63 5.99 6.30 6.60 6.89 7.08 -

1.36 2.14 2.95 3.77 4.15 4.51 4.91 5.28 5.62 5.97 6.27 6.55 6.81 6.97 -

1.35 2.13 2.94 3.77 4.15 4.50 4.90 5.27 5.60 5.94 6.23 6.49 6.73 -

1.33 2.12 2.94 3.76 4.14 4.50 4.89 5.25 5.57 5.90 6.18 6.43 6.63 -

-

-

1.31 2.11 2.93 3.76 4.14 4.49 4.88 5.23 5.55 5.86 6.12 6.35 6.52 -

1.29 2.09 2.92 3.75 4.12 4.47 4.86 5.20 5.51 5.81 6.06 6.26 -

1.27 2.08 2.91 3.74 4.11 4.46 4.84 5.17 5.47 5.76 5.98 6.16 -

-

-

-

-

1.25 2.06 2.89 3.72 4.09 4.43 4.81 5.14 5.42 5.69 5.90 6.05 -

1.23 2.04 2.88 3.70 4.07 4.41 4.77 5.09 5.37 5.62 5.81 5.94 -

1.20 2.02 2.86 3.68 4.04 4.38 4.73 5.04 5.30 5.54 5.71 -

1.18 2.00 2.84 3.65 4.01 4.34 4.69 4.99 5.24 5.46 5.60 -

1.15 1.97 2.81 3.62 3.98 4.30 4.64 4.93 5.16 5.36 5.48 -

1.12 1.95 2.79 3.59 3.94 4.26 4.59 4.86 5.08 5.26 - -

1.09 1.92 2.76 3.56 3.90 4.21 4.53 4.79 4.99 5.15 -

1.05 1.89 2.73 3.52 3.86 4.16 4.47 4.71 4.90 5.03 -

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

[kW]

Additional power rating for speed ratio (Pa)

Speed ratio

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.01 0.06 0.09 0.11

0.01 0.09 0.12 0.15

0.02 0.13 0.19 0.23

0.04 0.26 0.37 0.45

0.00 0.01 0.01 0.02

0.00 0.02 0.03 0.03

0.00 0.03 0.04 0.05

0.01 0.04 0.05 0.06

0.01 0.05 0.06 0.08

0.01 0.05 0.08 0.10

0.01 0.06 0.09 0.11

0.01 0.07 0.10 0.13

0.01 0.08 0.12 0.14

0.01 0.09 0.13 0.16

0.02 0.10 0.14 0.18

0.02 0.11 0.16 0.19

0.02 0.12 0.17 0.21

0.02 0.13 0.18 0.22

0.02 0.14 0.19 0.24

0.02 0.15 0.21 0.25

0.02 0.15 0.22 0.27

0.03 0.16 0.23 0.29

0.03 0.17 0.25 0.30

0.03 0.18 0.26 0.32

0.03 0.19 0.27 0.33

0.03 0.20 0.28 0.35

0.03 0.21 0.30 0.37

0.03 0.22 0.31 0.38

0.04 0.23 0.32 0.40

0.04 0.24 0.34 0.41

0.04 0.25 0.35 0.43

0.04 0.26 0.36 0.45

0.04 0.26 0.38 0.46

0.04 0.27 0.39 0.48

0.04 0.28 0.40 0.49

0.05 0.29 0.41 0.51

0.05 0.30 0.43 0.53

0.05 0.31 0.44 0.54

0.05 0.32 0.45 0.56

0.05 0.33 0.47 0.57

0.05 0.34 0.48 0.59

0.05 0.35 0.49 0.60

0.05 0.36 0.50 0.62

0.06 0.36 0.52 0.64

0.06 0.37 0.53 0.65

0.06 0.38 0.54 0.67

0.06 0.39 0.56 0.68

0.06 0.40 0.57 0.70

0.06 0.41 0.58 0.72

0.06 0.42 0.60 0.73

0.07 0.43 0.61 0.75

0.07 0.44 0.62 0.76

0.07 0.45 0.63 0.78

0.07 0.46 0.65 0.80

0.07 0.46 0.66 0.81

0.07 0.47 0.67 0.83

0.07 0.48 0.69 0.84

0.08 0.49 0.70 0.86

0.08 0.50 0.71 0.88

0.08 0.51 0.72 0.89

0.08 0.52 0.74 0.91

0.08 0.53 0.75 0.92

0.08 0.54 0.76 0.94

0.08 0.55 0.78 0.95

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2

Design

2-24

5 Calculation of V-belt drives design

Power Rating Table

B/17-Section Power Rating

2

Design

Table 2-24

[kW] small pulley speed nd(rpm)

700

950

1450

2850

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

100

200

300

400

500

Basic power rating for small pulley datum diameter : Ps

Small pulley datum diameter dd (mm)

Additional power rating for speed ratio (Pa)

Speed ratio

112 125 132 140 150 160 170 180 190 200 212 224 236 250 280

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

1.48 1.96 2.21 2.49 2.85 3.20 3.55 3.89 4.24 4.58 4.98 5.38 5.78 6.23 7.20

1.83 2.45 2.78 3.15 3.61 4.06 4.51 4.96 5.40 5.84 6.35 6.86 7.37 7.94 9.15

0.33 0.41 0.45 0.50 0.56 0.62 0.69 0.75 0.81 0.87 0.94 1.01 1.08 1.16 1.34

0.57 0.73 0.81 0.90 1.02 1.13 1.25 1.36 1.47 1.59 1.72 1.85 1.99 2.14 2.47

0.79 1.01 1.13 1.26 1.43 1.60 1.76 1.92 2.09 2.25 2.44 2.63 2.83 3.05 3.52

0.98 1.27 1.42 1.60 1.81 2.03 2.24 2.45 2.66 2.87 3.12 3.37 3.62 3.90 4.51

1.16 1.51 1.70 1.91 2.18 2.44 2.70 2.96 3.21 3.47 3.77 4.07 4.37 4.72 5.45

2.33 3.78 4.47 5.18 5.93 6.53 6.97 7.24 -

2.22 3.66 4.33 5.02 5.73 6.29 6.67 6.86 -

2.43 3.90 4.60 5.33 6.11 6.75 7.24 7.58 7.74 -

-

-

2.61 4.09 4.81 5.57 6.41 7.12 7.71 8.16 8.46 8.62 -

2.53 4.00 4.71 5.45 6.27 6.95 7.49 7.88 8.12 - -

-

-

-

2.82 4.29 5.02 5.81 6.71 7.50 8.20 8.78 9.26 9.61 9.87 -

2.76 4.23 4.97 5.74 6.62 7.40 8.06 8.61 9.03 9.32 9.49 -

2.69 4.17 4.89 5.66 6.52 7.27 7.90 8.40 8.76 8.99 - -

-

-

-

-

-

-

-

-

-

-

-

-

-

1.33 1.74 1.96 2.21 2.52 2.83 3.13 3.44 3.74 4.03 4.39 4.74 5.09 5.49 6.34

1.48 1.96 2.21 2.49 2.85 3.20 3.55 3.89 4.24 4.58 4.98 5.38 5.78 6.23 7.20

1.63 2.16 2.44 2.76 3.16 3.56 3.95 4.33 4.72 5.10 5.55 5.99 6.43 6.94 8.01

1.77 2.35 2.67 3.02 3.46 3.90 4.33 4.76 5.18 5.60 6.09 6.58 7.06 7.62 8.78

1.89 2.54 2.88 3.27 3.75 4.23 4.70 5.16 5.62 6.07 6.61 7.14 7.66 8.26 9.51

2.01 2.71 3.09 3.51 4.03 4.54 5.05 5.55 6.04 6.53 7.10 7.67 8.23 8.87 10.19

2.13 2.88 3.28 3.73 4.29 4.84 5.38 5.92 6.44 6.96 7.58 8.18 8.77 9.44 10.83

2.23 3.04 3.46 3.95 4.54 5.12 5.70 6.27 6.83 7.38 8.02 8.65 9.27 9.98 11.42

-

-

-

-

-

-

-

-

-

-

0.03 0.19 0.27 0.33

0.04 0.25 0.36 0.44

0.06 0.39 0.55 0.68

0.12 0.76 1.08 1.33

0.00 0.03 0.04 0.05

0.01 0.05 0.08 0.09

0.01 0.08 0.11 0.14

0.02 0.11 0.15 0.19

0.02 0.13 0.19 0.23

0.02 0.16 0.23 0.28

0.03 0.19 0.27 0.33

0.03 0.21 0.30 0.37

0.04 0.24 0.34 0.42

0.04 0.27 0.38 0.47

0.05 0.29 0.42 0.51

0.05 0.32 0.46 0.56

0.05 0.35 0.49 0.61

0.06 0.37 0.53 0.65

0.06 0.40 0.57 0.70

0.07 0.43 0.61 0.75

0.07 0.46 0.65 0.79

0.07 0.48 0.68 0.84

0.08 0.51 0.72 0.89

0.08 0.54 0.76 0.93

0.09 0.56 0.80 0.98

-

-

-

-

-

0.09 0.59 0.84 1.03

0.10 0.62 0.87 1.07

0.10 0.64 0.91 1.12

0.10 0.67 0.95 1.17

0.11 0.70 0.99 1.21

0.11 0.72 1.03 1.26

0.12 0.75 1.06 1.31

0.12 0.78 1.10 1.36

0.12 0.80 1.14 1.40

0.13 0.83 1.18 1.45

0.13 0.86 1.22 1.50

0.14 0.88 1.25 1.54

0.14 0.91 1.29 1.59

0.14 0.94 1.33 1.64

-

-

-

-

-

-

-

0.15 0.96 1.37 1.68

0.15 0.99 1.41 1.73

0.16 1.02 1.44 1.78

0.16 1.04 1.48 1.82

0.17 1.07 1.52 1.87

0.17 1.10 1.56 1.92

0.17 1.12 1.60 1.96

0.18 1.18 1.67 2.06

0.19 1.20 1.71 2.10

0.19 1.23 1.75 2.15

0.19 1.26 1.79 2.20

0.20 1.28 1.82 2.24

0.20 1.31 1.86 2.29

0.21 1.34 1.90 2.34

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-25

Calculation of V-belt drives design

Power Rating Table

5

BX-Section Power Rating

Table 2-25

[kW] small pulley speed nd(rpm)

700

950

1450

2850

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

100

200

300

400

500

Basic power rating for small pulley datum diameter : Ps

Small pulley datum diameter dd (mm)

Additional power rating for speed ratio (Pa)

Speed ratio

90 100 106 112 118 125 132 140 160 180 190 200 212 224 250 280

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

1.70 2.01 2.20 2.38 2.56 2.77 2.98 3.22 3.79 4.36 4.63 4.91 5.23 5.55 6.23 6.99

2.12 2.52 2.76 3.00 3.23 3.50 3.76 4.07 4.80 5.51 5.86 6.21 6.62 7.02 7.86 8.80

0.37 0.43 0.46 0.49 0.53 0.57 0.61 0.65 0.76 0.87 0.93 0.98 1.04 1.11 1.24 1.40

0.65 0.75 0.82 0.88 0.94 1.02 1.09 1.17 1.37 1.57 1.67 1.77 1.88 2.00 2.24 2.52

0.89 1.04 1.13 1.22 1.31 1.42 1.52 1.63 1.92 2.20 2.34 2.48 2.64 2.80 3.14 3.54

1.11 1.31 1.43 1.54 1.65 1.79 1.92 2.06 2.43 2.78 2.96 3.13 3.34 3.55 3.98 4.48

1.32 1.56 1.70 1.84 1.97 2.13 2.29 2.47 2.91 3.34 3.55 3.76 4.00 4.25 4.77 5.36

4.70 5.78 6.38 6.94 7.47 8.04 8.55 9.07 10.04 -

4.71 5.79 6.39 6.95 7.47 8.03 8.53 9.03 9.94 -

4.71 5.79 6.39 6.95 7.46 8.01 8.50 8.99 9.82 -

4.71 5.79 6.39 6.94 7.45 7.99 8.46 8.92 9.68 -

4.70 5.78 6.38 6.92 7.43 7.95 8.41 8.85 9.53 -

4.69 5.77 6.36 6.90 7.39 7.91 8.35 8.76 -

4.67 5.75 6.34 6.87 7.35 7.85 8.27 8.66 -

4.65 5.73 6.31 6.83 7.30 7.78 8.19 8.54 -

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1.52 1.79 1.95 2.12 2.28 2.46 2.64 2.85 3.36 3.86 4.10 4.35 4.63 4.92 5.52 6.20

1.70 2.01 2.20 2.38 2.56 2.77 2.98 3.22 3.79 4.36 4.63 4.91 5.23 5.55 6.23 6.99

1.87 2.22 2.43 2.64 2.84 3.07 3.31 3.57 4.21 4.84 5.14 5.45 5.80 6.16 6.91 7.74

2.04 2.43 2.65 2.88 3.10 3.36 3.61 3.90 4.61 5.29 5.63 5.96 6.35 6.74 7.55 8.46

2.20 2.62 2.87 3.11 3.35 3.64 3.91 4.23 4.99 5.73 6.09 6.45 6.87 7.29 8.16 9.13

2.35 2.80 3.07 3.34 3.60 3.90 4.20 4.54 5.36 6.15 6.54 6.92 7.37 7.81 8.74 9.76

2.49 2.98 3.27 3.55 3.83 4.16 4.47 4.83 5.71 6.56 6.97 7.37 7.85 8.32 9.29 10.36

2.63 3.15 3.46 3.76 4.06 4.40 4.74 5.12 6.05 6.95 7.38 7.81 8.31 8.79 9.81 10.92

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.02 0.10 0.14 0.17

0.02 0.13 0.19 0.23

0.03 0.20 0.29 0.35

0.06 0.40 0.57 0.70

0.00 0.01 0.02 0.02

0.00 0.03 0.04 0.05

0.01 0.04 0.06 0.07

0.01 0.06 0.08 0.10

0.01 0.07 0.10 0.12

0.01 0.08 0.12 0.15

0.02 0.10 0.14 0.17

0.02 0.11 0.16 0.20

0.02 0.13 0.18 0.22

0.02 0.14 0.20 0.24

0.02 0.15 0.22 0.27

0.03 0.17 0.24 0.29

0.03 0.18 0.26 0.32

0.03 0.20 0.28 0.34

0.03 0.21 0.30 0.37

0.03 0.22 0.32 0.39

0.04 0.24 0.34 0.42

0.04 0.25 0.36 0.44

0.04 0.27 0.38 0.46

0.04 0.28 0.40 0.49

0.05 0.29 0.42 0.51

-

-

-

-

-

0.05 0.31 0.44 0.54

0.05 0.32 0.46 0.56

0.05 0.34 0.48 0.59

0.05 0.35 0.50 0.61

0.06 0.36 0.52 0.64

0.06 0.38 0.54 0.66

0.06 0.39 0.56 0.68

0.06 0.41 0.58 0.71

0.06 0.42 0.60 0.73

0.07 0.43 0.62 0.76

0.07 0.45 0.64 0.78

0.07 0.46 0.66 0.81

0.07 0.48 0.68 0.83

0.08 0.49 0.70 0.86

-

-

-

-

-

0.08 0.50 0.72 0.88

0.08 0.52 0.74 0.90

0.08 0.53 0.75 0.93

0.08 0.55 0.77 0.95

0.09 0.56 0.79 0.98

0.09 0.57 0.81 1.00

-

-

-

-

-

-

-

-

-

-

0.09 0.59 0.83 1.03

0.09 0.60 0.85 1.05

0.10 0.62 0.87 1.07

0.10 0.63 0.89 1.10

0.10 0.64 0.91 1.12

0.10 0.66 0.93 1.15

0.10 0.67 0.95 1.17

0.11 0.69 0.97 1.20

0.11 0.70 0.99 1.22

2

Design

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-26

5 Calculation of V-belt drives design

Power Rating Table

C/22-Section Power Rating

2

Design

Table 2-26

[kW] small pulley speed nd(rpm)

700

950

1450

2850

50

100

150

200

250

300

350

400

450

500

550

600

650

700

750

800

850

900

950

1000

1050

1100

1150

1200

1250

1300

1350

1400

1450

1500

1550

1600

1650

1700

1750

1800

1850

1900

1950

2000

2050

2100

2150

2200

2250

2300

2350

2400

2450

2500

2550

2600

2650

2700

2750

2800

2850

2900

2950

3000

3050

3100

3150

3200

3250

180 200 212

Basic power rating for small pulley datum diameter : Ps

224 236

Small pulley datum diameter dd (mm)

250 265 280 300 315 335 355 375 400 450

10.08

5.59 7.07 7.94 8.80 9.65 10.63 11.66 12.67 13.98 14.95 16.21 17.44 18.63 20.06 22.75

7.22 9.23 10.40 11.54 12.65 13.91 15.21 16.47 18.05 19.18 20.60 21.91 23.11 24.46 26.58

- - - - - - - -

0.53 0.64 0.70 0.76 0.83 0.90 0.98 1.06 1.16 1.24 1.34 1.44 1.54 1.67 1.92

0.96 1.16 1.28 1.40 1.51 1.65 1.80 1.95 2.14 2.28 2.48 2.67 2.86 3.09 3.56

1.34 1.63 1.80 1.98 2.15 2.35 2.56 2.77 3.05 3.26 3.54 3.81 4.09 4.43 5.10

1.70 2.07 2.30 2.52 2.75 3.00 3.28 3.55 3.92 4.19 4.55 4.90 5.26 5.70 6.57

2.03 2.49 2.77 3.04 3.32 3.63 3.97 4.30 4.75 5.08 5.51 5.95 6.38 6.92 7.97

2.35 2.90 3.22 3.54 3.86 4.24 4.63 5.03 5.55 5.93 6.45 6.96 7.46 8.09 9.33

2.66 3.28 3.66 4.03 4.39 4.82 5.27 5.73 6.32 6.76 7.35 7.93 8.51 9.23

2.95 3.66 4.08 4.49 4.91 5.39 5.90 6.40 7.07 7.57 8.23 8.88 9.53

3.23 4.02 4.48 4.94 5.40 5.93 6.50 7.06 7.80 8.35 9.08 9.80

10.69

3.77 4.70 5.26 5.81 6.35 6.99 7.66 8.32 9.20 9.85 10.70

10.33

11.39

11.46

11.55

12.42

12.39

12.38

13.42

13.19

14.38

14.14

13.97

15.30

18.55

4.74 5.96 6.68 7.39 8.10 8.92 9.78 10.63 11.75 12.57 13.66 14.72 15.77 17.04 19.49

4.97 6.25 7.01 7.76 8.51 9.36 10.27 11.16 12.34 13.20 14.34 15.45 16.53 17.86 20.39

5.18 6.53 7.33 8.12 8.90 9.80 10.75 11.68 12.91 13.81 14.99 16.14 17.26 18.63 21.23

5.39 6.80 7.64 8.47 9.28 10.22 11.21 12.18 13.46 14.39 15.61 16.80 17.96 19.37 22.02

5.59 7.07 7.94 8.80 9.65 10.63 11.66 12.67 13.98 14.95 16.21 17.44 18.63 20.06 22.75

5.78 7.32 8.23 9.13 10.01 11.02 12.09 13.13 14.49 15.49 16.78 18.04 19.25 20.71 23.43

5.97 7.57 8.51 9.44 10.35 11.40 12.50 13.58 14.98 16.00 17.33 18.61 19.85 21.32 24.04

6.15 7.81 8.78 9.74 10.68 11.77 12.90 14.01 15.44 16.49 17.84 19.15 20.40 21.89 24.60

6.33 8.04 9.04 10.03 11.01 12.12 13.28 14.42 15.89 16.96 18.33 19.65 20.91 22.40 25.09

6.49 8.26 9.30 10.31 11.31 12.45 13.65 14.81 16.31 17.39 18.79 20.12 21.39 22.87 25.51

6.65 8.47 9.54 10.58 11.61 12.78 14.00 15.18 16.71 17.81 19.21 20.55 21.82 23.29 25.87

6.80 8.67 9.77 10.84 11.89 13.08 14.33 15.53 17.08 18.19 19.61 20.95 22.21 23.66 26.16

6.95 8.87 9.99 11.09 12.16 13.38 14.64 15.86 17.43 18.55 19.97 21.31 22.56 23.98 26.37

7.09 9.05 10.20 11.32 12.41 13.65 14.94 16.18 17.75 18.88 20.30 21.63 22.86 24.25 26.51

7.22 9.23 10.40 11.54 12.65 13.91 15.21 16.47 18.05 19.18 20.60 21.91 23.11 24.46 26.58

7.34 9.40 10.59 11.75 12.88 14.16 15.47 16.73 18.33 19.45 20.86 22.15 23.32 24.61 26.56

-

-

-

-

-

-

7.45 9.55 10.77 11.95 13.09 14.39 15.71 16.98 18.57 19.69 21.08 22.35 23.48 24.70 26.46

7.56 9.70 10.93 12.13 13.29 14.60 15.93 17.21 18.80 19.91 21.27 22.50 23.59 24.74 26.28

7.66 9.84 11.09 12.30 13.48 14.79 16.13 17.41 18.99 20.09 21.42 22.61 23.65 24.71 26.02

8.11 10.45 11.78 13.05 14.26 15.58 16.90 18.10 19.53 20.46 21.50 22.30 22.85

-

-

-

8.19 10.57 11.92 13.19 14.39 15.69 16.97 18.13 19.46 20.29 21.18 21.79

- - - - - - - -

8.24 10.65 12.00 13.26 14.45 15.73 16.96 18.04 19.26 19.98 20.68 21.07

-

-

7.92 10.19 11.49 12.74 13.94 15.27 16.61 17.87 19.39 20.43 21.64 22.67 23.50 24.25

7.99 10.29 11.60 12.86 14.06 15.39 16.73 17.97 19.47 20.47 21.64 22.60 23.34 23.96

8.15 10.52 11.86 13.13 14.33 15.65 16.95 18.13 19.51 20.39 21.36 22.07 22.51

-

-

-

-

-

-

-

-

-

-

-

- - - - - - - -

- - - - - - - -

8.25 10.67 12.02 13.28 14.45 15.71 16.91 17.96 19.10 19.76 20.36

8.25 10.68 12.02 13.28 14.44 15.67 16.84 17.85 18.91 19.50 19.99

8.25 10.68 12.02 13.26 14.41 15.61 16.75 17.70 18.69 19.20

8.23 10.66 12.00 13.23 14.36 15.53 16.62 17.53 18.43 18.86

8.21 10.64 11.96 13.18 14.29 15.43 16.48 17.32 18.13 18.48

8.17 10.60 11.91 13.11 14.20 15.31 16.30 17.09 17.79

8.13 10.55 11.85 13.03 14.09 15.16 16.10 16.82 17.42

8.08 10.49 11.77 12.93 13.96 14.99 15.87 16.52

14.29

8.02 10.41 11.68 12.81 13.81 14.79 15.61 16.19

7.95 10.32 11.57 12.68 13.64 14.57 15.33 15.82

-

-

-

-

-

- - - - - - - - -

- - - - - - - - -

- - - - - - - - -

- - - - - - - - -

- - - - - - - - -

- - - - - - - - - -

- - - - - - - - - -

7.86 10.22 11.44 12.52 13.45 14.33 15.01 15.42

- - - - - - - - - -

7.67

7.56

7.44

7.30

7.16

11.15

9.11

13.00

11.50

14.67

- - - - - - - - - - -

- - - - - - - - - - -

6.84

- - - - - - - - - - -

6.47

- - - - - - - - - - -

-

-

-

-

-

- - - - - - - - - -

- - - - - - - - - - -

- - - - - - - - - - -

Additional power rating for speed ratio (Pa)

Speed ratio

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.07 0.44 0.62 0.77

0.09 0.60 0.85 1.04

0.14 0.91 1.29 1.59

0.28 1.79 2.54 3.12

0.00 0.03 0.04 0.05

0.01 0.06 0.09 0.11

0.01 0.09 0.13 0.16

0.02 0.13 0.18 0.22

0.02 0.16 0.22 0.27

0.03 0.19 0.27 0.33

0.03 0.22 0.31 0.38

0.04 0.25 0.36 0.44

0.04 0.28 0.40 0.49

0.05 0.31 0.44 0.55

0.05 0.34 0.49 0.60

0.06 0.38 0.53 0.66

0.06 0.41 0.58 0.71

0.07 0.44 0.62 0.77

0.07 0.47 0.67 0.82

0.08 0.50 0.71 0.88

0.08 0.53 0.76 0.93

0.09 0.56 0.80 0.98

0.09 0.60 0.85 1.04

0.10 0.63 0.89 1.09

0.10 0.66 0.93 1.15

0.11 0.69 0.98 1.20

0.11 0.72 1.02 1.26

0.12 0.75 1.07 1.31

0.12 0.78 1.11 1.37

0.13 0.81 1.16 1.42

0.13 0.85 1.20 1.48

0.14 0.88 1.25 1.53

0.14 0.91 1.29 1.59

0.15 0.94 1.33 1.64

0.15 0.97 1.38 1.70

0.16 1.00 1.42 1.75

0.16 1.03 1.47 1.81

0.16 1.07 1.51 1.86

0.17 1.10 1.56 1.91

0.17 1.13 1.60 1.97

0.18 1.16 1.65 2.02

0.18 1.19 1.69 2.08

0.19 1.22 1.73 2.13

0.19 1.25 1.78 2.19

0.20 1.28 1.82 2.24

0.20 1.32 1.87 2.30

0.21 1.35 1.91 2.35

0.21 1.38 1.96 2.41

0.22 1.41 2.00 2.46

0.22 1.44 2.05 2.52

0.23 1.47 2.09 2.57

0.23 1.50 2.14 2.63

0.24 1.54 2.18 2.68

0.24 1.57 2.22 2.74

0.25 1.60 2.27 2.79

0.25 1.63 2.31 2.84

0.26 1.66 2.36 2.90

0.26 1.69 2.40 2.95

0.27 1.72 2.45 3.01

0.27 1.75 2.49 3.06

0.28 1.79 2.54 3.12

0.28 1.82 2.58 3.17

0.29 1.85 2.62 3.23

0.29 1.88 2.67 3.28

0.30 1.91 2.71 3.34

0.30 1.94 2.76 3.39

0.31 1.97 2.80 3.45

0.31 2.01 2.85 3.50

0.32 2.04 2.89 3.56

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-27

Calculation of V-belt drives design

Power Rating Table

5

CX-Section Power Rating

Table 2-27

[kW] small pulley speed nd(rpm)

700

950

1450

2850

50

100

150

200

250

300

350

400

450

500

550

600

650

700

750

800

850

900

950

1000

1050

1100

1150

1200

1250

1300

1350

1400

1450

1500

1550

1600

1650

1700

1750

1800

1850

1900

1950

2000

2050

2100

2150

2200

2250

2300

2350

2400

2450

2500

2550

2600

2650

2700

2750

2800

2850

2900

2950

3000

3050

3100

3150

3200

3250

3300

3350

3400

3450

3500

Basic power rating for small pulley datum diameter : Ps

Small pulley datum diameter dd (mm)

Additional power rating for speed ratio (Pa)

Speed ratio

140 150 160 180 200 224 250 280 315 335 355 400 450 500 630

4.82 5.30 5.77 6.70 7.60 8.67 9.79 11.05 12.47 13.26 14.04 15.73 17.51 19.20 23.11

6.08 6.69 7.29 8.47 9.62 10.96 12.36 13.91 15.65 16.60 17.52 19.49 21.50 23.32 27.04

8.25 9.09 9.91 11.50 13.03 14.78 16.56 18.47 20.50 21.56 22.53 24.43 26.03 27.05

- - - - - - -

-

0.54 0.59 0.64 0.74 0.83 0.94 1.06 1.20 1.35 1.44 1.53 1.73 1.94 2.15 2.69

0.98 1.07 1.16 1.34 1.51 1.72 1.94 2.19 2.48 2.64 2.80 3.16 3.55 3.93 4.91

1.38 1.51 1.64 1.89 2.14 2.43 2.74 3.10 3.51 3.74 3.96 4.47 5.02 5.56 6.94

1.76 1.92 2.09 2.41 2.73 3.10 3.50 3.96 4.48 4.77 5.06 5.71 6.41 7.10 8.84

10.64

2.46 2.69 2.92 3.38 3.83 4.36 4.92 5.56 6.29 6.71 7.11 8.02 9.00 9.95

10.21

12.35

11.29

3.99 4.39 4.77 5.53 6.28 7.16 8.09 9.13 10.99 11.65

11.38

12.50

13.58

13.08

13.97

15.51

13.80

18.37

14.63 16.11

15.63

19.68

20.90

4.55 5.00 5.44 6.32 7.17 8.17 9.23 10.43 11.78 12.53 13.27 14.88 16.59 18.22 22.05

4.82 5.30 5.77 6.70 7.60 8.67 9.79 11.05 12.47 13.26 14.04 15.73 17.51 19.20 23.11

5.08 5.59 6.09 7.07 8.02 9.15 10.33 11.65 13.15 13.97 14.78 16.54 18.39 20.13 24.08

5.34 5.87 6.40 7.43 8.44 9.61 10.86 12.24 13.80 14.66 15.51 17.33 19.23 21.00 24.96

5.59 6.15 6.70 7.79 8.84 10.07 11.37 12.81 14.44 15.33 16.20 18.08 20.03 21.83 25.75

5.84 6.43 7.00 8.13 9.23 10.52 11.87 13.37 15.05 15.98 16.88 18.80 20.79 22.60 26.44

6.08 6.69 7.29 8.47 9.62 10.96 12.36 13.91 15.65 16.60 17.52 19.49 21.50 23.32 27.04

6.32 6.95 7.58 8.81 10.00 11.38 12.83 14.44 16.23 17.20 18.14 20.15 22.17 23.97 27.52

6.55 7.21 7.86 9.13 10.37 11.80 13.30 14.95 16.78 17.78 18.74 20.77 22.80 24.57 27.91

6.78 7.46 8.14 9.45 10.73 12.21 13.75 15.45 17.32 18.34 19.31 21.36 23.37 25.11 28.17

7.00 7.71 8.41 9.77 11.08 12.61 14.19 15.93 17.84 18.87 19.85 21.91 23.91 25.59 28.33

7.22 7.95 8.67 10.07 11.43 12.99 14.62 16.39 18.33 19.38 20.37 22.42 24.39 26.00 28.36

7.43 8.19 8.93 10.37 11.76 13.37 15.03 16.84 18.81 19.86 20.86 22.90 24.82 26.35

-

7.85 8.65 9.43 10.95 12.41 14.10 15.82 17.69 19.70 20.76 21.75 23.75 25.53 26.84

8.05 8.87 9.67 11.23 12.73 14.44 16.20 18.09 20.11 21.17 22.16 24.11 25.81 26.98

8.25 9.09 9.91 11.50 13.03 14.78 16.56 18.47 20.50 21.56 22.53 24.43 26.03 27.05

-

-

-

-

-

-

-

-

-

-

-

8.44 9.30 10.14 11.77 13.33 15.11 16.91 18.84 20.87 21.92 22.88 24.72 26.20 27.04

8.63 9.51 10.37 12.03 13.62 15.42 17.25 19.19 21.21 22.25 23.19 24.96 26.31

8.81 9.71 10.59 12.29 13.90 15.73 17.58 19.53 21.54 22.56 23.47 25.16 26.36

9.00 9.91 10.81 12.54 14.18 16.03 17.89 19.84 21.84 22.83 23.72 25.31 26.35

9.17 10.11 11.02 12.78 14.44 16.32 18.19 20.14 22.11 23.09 23.94 25.42

9.35 10.30 11.23 13.01 14.70 16.59 18.47 20.42 22.36 23.31 24.13 25.48 -

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

9.52 10.49 11.43 13.24 14.95 16.86 18.75 20.68 22.59 23.50 24.28 25.50

9.68 10.67 11.63 13.46 15.19 17.11 19.00 20.92 22.79 23.67 24.40 25.47

9.85 10.85 11.82 13.68 15.42 17.36 19.25 21.15 22.97 23.80 24.48 25.39

10.00 11.02 12.01 13.89 15.65 17.59 19.48 21.35 23.12 23.91 24.52

10.16 11.19 12.19 14.09 15.86 17.81 19.69 21.54 23.24 23.98 24.53

- - - - - - - -

- - - - - - - -

- - - - - - - -

- - - - - - - -

12.00 13.18 14.29 16.31 18.04 19.73 21.03

11.37 12.51 13.59 15.61 17.42 19.29 20.94 22.29

11.49 12.63 13.72 15.75 17.55 19.40 21.00 22.27

10.87 11.97 13.02 15.01 16.82 18.75 20.54 22.17 23.45 23.85

11.60 12.75 13.85 15.87 17.67 19.49 21.04 22.22

11.71 12.86 13.97 15.99 17.78 19.57 21.06 22.15

11.81 12.97 14.08 16.11 17.87 19.64 21.07 22.06

11.91 13.08 14.19 16.21 17.96 19.69 21.06 21.94

10.31 11.35 12.37 14.29 16.07 18.02 19.89 21.71 23.34 24.02 24.51

10.45 11.51 12.54 14.48 16.27 18.22 20.07 21.85 23.41 24.03 24.44

10.60 11.67 12.70 14.66 16.46 18.41 20.24 21.98 23.45 24.00 24.34

10.74 11.82 12.87 14.84 16.64 18.59 20.40 22.09 23.46 23.95

11.00 12.11 13.17 15.17 16.98 18.91 20.66 22.23 23.40

-

- - - - - - - - -

11.25 12.38 13.46 15.47 17.28 19.18 20.86 22.30 23.22

13.27 18.11 20.99

12.18 13.36 14.48 16.48 18.17 19.77 20.92

12.26 13.45 14.56 16.55 18.22 19.77 20.84

12.42 13.61 14.71 16.68 18.29 19.73 20.62

12.55

12.61

12.49 13.68 14.78 16.73 18.31 19.68 20.48 - - - - - - - - - - -

- - - - - - - - - - -

- - - - - - - - - - -

- - - - - - - - - - -

- - - - - - - - - - -

12.67

12.72

13.95 18.24 19.25 - - - - - - - - - - -

12.82

- - - - - - - - - - -

12.89

- - - - - - - - - - -

-

-

-

-

-

-

-

-

-

-

- - - - - - - - -

- - - - - - - - -

- - - - - - - - - -

- - - - - - - - - -

- - - - - - - - - -

- - - - - - - - - -

- - - - - - - - - -

- - - - - - - - - - -

12.34 13.53 14.64 16.62 18.26 19.75 20.74

- - - - - - - - - - -

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.03 0.18 0.26 0.32

0.04 0.25 0.36 0.44

0.06 0.38 0.54 0.67

0.12 0.75 1.07 1.31

0.00 0.01 0.02 0.02

0.00 0.03 0.04 0.05

0.01 0.04 0.06 0.07

0.01 0.05 0.07 0.09

0.01 0.07 0.09 0.11

0.01 0.08 0.11 0.14

0.01 0.09 0.13 0.16

0.02 0.11 0.15 0.18

0.02 0.12 0.17 0.21

0.02 0.13 0.19 0.23

0.02 0.14 0.21 0.25

0.02 0.16 0.22 0.28

0.03 0.17 0.24 0.30

0.03 0.18 0.26 0.32

0.03 0.20 0.28 0.34

0.03 0.21 0.30 0.37

0.03 0.22 0.32 0.39

0.04 0.24 0.34 0.41

0.04 0.25 0.36 0.44

0.04 0.26 0.37 0.46

0.04 0.28 0.39 0.48

0.04 0.29 0.41 0.51

0.05 0.30 0.43 0.53

0.05 0.32 0.45 0.55

0.05 0.33 0.47 0.57

0.05 0.34 0.49 0.60

0.05 0.36 0.50 0.62

0.06 0.37 0.52 0.64

0.06 0.38 0.54 0.67

0.06 0.39 0.56 0.69

0.06 0.41 0.58 0.71

0.07 0.42 0.60 0.74

0.07 0.43 0.62 0.76

0.07 0.45 0.64 0.78

0.07 0.46 0.65 0.80

0.07 0.47 0.67 0.83

0.08 0.49 0.69 0.85

0.08 0.50 0.71 0.87

0.08 0.51 0.73 0.90

0.08 0.53 0.75 0.92

0.08 0.54 0.77 0.94

0.09 0.55 0.78 0.97

0.09 0.57 0.80 0.99

0.09 0.58 0.82 1.01

0.09 0.59 0.84 1.03

0.09 0.61 0.86 1.06

0.10 0.62 0.88 1.08

0.10 0.63 0.90 1.10

0.10 0.65 0.92 1.13

0.10 0.66 0.93 1.15

0.10 0.67 0.95 1.17

0.11 0.68 0.97 1.19

0.11 0.70 0.99 1.22

0.11 0.71 1.01 1.24

0.11 0.72 1.03 1.26

0.11 0.74 1.05 1.29

0.12 0.75 1.07 1.31

0.12 0.76 1.08 1.33

0.12 0.78 1.10 1.36

0.12 0.79 1.12 1.38

0.12 0.80 1.14 1.40

0.13 0.82 1.16 1.42

0.13 0.83 1.18 1.45

0.13 0.84 1.20 1.47

0.13 0.86 1.21 1.49

0.13 0.87 1.23 1.52

0.14 0.88 1.25 1.54

0.14 0.90 1.27 1.56

0.14 0.91 1.29 1.59

0.14 0.92 1.31 1.61

2

Design

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-28

5 Calculation of V-belt drives design

Power Rating Table

D/32-Section Power Rating

2

Design

Table 2-28

[kW] small pulley speed nd(rpm)

450

700

950

1450

20

40

60

80

100

120

140

160

180

200

220

240

260

280

300

320

340

360

380

400

420

440

460

480

500

520

540

560

580

600

620

640

660

680

700

720

740

760

780

800

820

840

860

880

900

Basic power rating for small pulley datum diameter : Ps

Small pulley datum diameter dd (mm)

Additional power rating for speed ratio (Pa)

Speed ratio

315 355 375 400 425 450 500 560 630 670 710 750 800 900

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

1.46 1.77 1.92 2.12 2.31 2.49 2.87 3.32 3.83 4.13 4.42 4.71 5.07 5.79

2.08 2.53 2.75 3.03 3.30 3.58 4.12 4.77 5.52 5.94 6.36 6.78 7.31 8.34

2.66 3.24 3.53 3.89 4.25 4.61 5.32 6.16 7.13 7.69 8.23 8.78 9.46

11.07 13.80 15.15 16.82 18.46 20.08 23.27 26.98 31.16 33.47 35.72 37.91 40.56 45.56

15.30 19.17 21.06 23.37 25.62 27.82 32.06 36.82 41.92 44.59 47.07 49.37 51.96 56.12

18.50 23.20 25.45 28.16 30.75 33.22 37.79 42.57 47.08 49.10 50.69 51.82 52.57

21.42 26.53 28.77 31.26 33.39 35.14 37.41

-

- - - - - - -

0.80 0.96 1.04 1.14 1.24 1.34 1.54 1.78 2.05 2.20 2.36 2.51 2.70 3.08

13.18

15.49

17.74

4.79 5.88 6.43 7.11 7.78 8.45 9.78 11.35 13.16 14.18 15.20 16.21 17.46 19.93

3.76 4.60 5.02 5.54 6.06 6.58 7.60 8.82 11.02

10.71

10.80

11.54

12.59 13.56

14.42

5.28 6.50 7.11 7.86 8.61 9.35 10.83 12.57 14.58 15.72 16.84 17.96 19.34 22.07

5.76 7.11 7.77 8.60 9.42 10.24 11.86 13.77 15.97 17.22 18.45 19.67 21.18 24.16

6.24 7.70 8.43 9.33 10.22 11.11 12.87 14.95 17.34 18.69 20.02 21.34 22.98 26.19

6.70 8.28 9.06 10.04 11.00 11.96 13.86 16.10 18.68 20.13 21.56 22.98 24.74 28.17

7.15 8.85 9.69 10.74 11.77 12.80 14.84 17.24 19.99 21.54 23.07 24.58 26.45 30.10

7.60 9.41 10.31 11.42 12.53 13.63 15.79 18.35 21.28 22.92 24.54 26.15 28.12 31.98

8.03 9.96 10.92 12.10 13.27 14.44 16.73 19.44 22.54 24.27 25.99 27.68 29.75 33.80

8.46 10.50 11.51 12.76 14.00 15.23 17.66 20.51 23.77 25.60 27.40 29.17 31.34 35.56

8.88 11.03 12.10 13.42 14.72 16.01 18.57 21.57 24.98 26.89 28.77 30.62 32.89 37.27

9.30 11.56 12.67 14.06 15.43 16.78 19.46 22.60 26.16 28.16 30.11 32.04 34.39 38.92

9.70 12.07 13.24 14.69 16.12 17.54 20.33 23.61 27.32 29.39 31.42 33.41 35.84 40.51

10.10 12.58 13.80 15.31 16.80 18.28 21.19 24.60 28.45 30.60 32.70 34.75 37.25 42.03

10.49 13.07 14.35 15.92 17.48 19.01 22.04 25.57 29.56 31.77 33.93 36.05 38.61 43.50

10.88 13.56 14.88 16.52 18.13 19.73 22.86 26.52 30.63 32.91 35.14 37.30 39.93 44.89

11.26 14.04 15.41 17.11 18.78 20.43 23.67 27.45 31.68 34.02 36.30 38.51 41.19 46.22

11.63 14.51 15.93 17.69 19.42 21.13 24.47 28.35 32.70 35.10 37.43 39.68 42.40 47.48

12.00 14.98 16.45 18.26 20.04 21.80 25.25 29.24 33.70 36.14 38.52 40.81 43.56 48.67

12.36 15.43 16.95 18.82 20.65 22.47 26.01 30.10 34.66 37.15 39.57 41.89 44.67 49.78

12.71 15.88 17.44 19.36 21.26 23.12 26.75 30.94 35.59 38.13 40.57 42.92 45.72 50.82

13.05 16.32 17.93 19.90 21.84 23.75 27.48 31.76 36.50 39.07 41.54 43.91 46.71 51.78

13.39 16.75 18.40 20.43 22.42 24.38 28.19 32.56 37.37 39.97 42.47 44.84 47.65 52.66

13.73 17.18 18.87 20.94 22.99 24.99 28.88 33.33 38.21 40.84 43.35 45.73 48.52 53.45

14.06 17.59 19.32 21.45 23.54 25.58 29.55 34.08 39.02 41.67 44.19 46.57 49.34 54.17

14.38 18.00 19.77 21.95 24.08 26.17 30.20 34.80 39.79 42.46 44.98 47.35 50.09 54.79

14.69 18.40 20.21 22.43 24.61 26.73 30.84 35.50 40.54 43.21 45.72 48.08 50.78 55.33

15.00 18.79 20.64 22.90 25.12 27.29 31.46 36.17 41.24 43.92 46.42 48.75 51.40 55.77

15.30 19.17 21.06 23.37 25.62 27.82 32.06 36.82 41.92 44.59 47.07 49.37 51.96 56.12

15.59 19.54 21.46 23.82 26.11 28.35 32.64 37.44 42.55 45.21 47.68 49.93 52.44 56.38

15.88 19.91 21.86 24.26 26.59 28.86 33.20 38.04 43.15 45.80 48.23 50.43 52.86 56.54

16.16 20.26 22.25 24.68 27.05 29.35 33.74 38.61 43.72 46.34 48.73 50.87 53.20 56.59

16.44 20.61 22.63 25.10 27.50 29.83 34.25 39.15 44.24 46.83 49.17 51.25 53.47 56.55

16.71 20.95 23.00 25.51 27.94 30.29 34.75 39.66 44.73 47.28 49.56 51.57 53.67 56.40

-

16.97 21.28 23.36 25.90 28.36 30.73 35.23 40.15 45.18 47.68 49.90 51.82 53.79 56.14

-

-

-

17.47 21.91 24.05 26.65 29.16 31.58 36.12 41.03 45.95 48.34 50.41 52.14 53.79

17.71 22.22 24.38 27.01 29.54 31.97 36.53 41.43 46.28 48.60 50.58 52.19 53.67

-

-

-

-

-

-

0.20 1.30 1.84 2.27

0.21 1.34 1.90 2.33

0.21 1.37 1.95 2.39

0.22 1.41 2.00 2.46

0.22 1.44 2.05 2.52

0.23 1.48 2.10 2.58

0.23 1.52 2.15 2.65

0.24 1.55 2.20 2.71

0.25 1.59 2.25 2.77

0.25 1.62 2.31 2.84

0.13 0.81 1.15 1.42

0.20 1.26 1.79 2.21

0.27 1.71 2.43 2.99

0.40 2.62 3.72 4.57

0.01 0.04 0.05 0.06

0.01 0.07 0.10 0.13

0.02 0.11 0.15 0.19

0.02 0.14 0.20 0.25

0.03 0.18 0.26 0.32

0.03 0.22 0.31 0.38

0.04 0.25 0.36 0.44

0.04 0.29 0.41 0.50

0.05 0.32 0.46 0.57

0.06 0.36 0.51 0.63

0.06 0.40 0.56 0.69

0.07 0.43 0.61 0.76

0.07 0.47 0.67 0.82

0.08 0.51 0.72 0.88

0.08 0.54 0.77 0.95

0.09 0.58 0.82 1.01

0.09 0.61 0.87 1.07

0.10 0.65 0.92 1.13

0.11 0.69 0.97 1.20

0.11 0.72 1.02 1.26

0.12 0.76 1.08 1.32

0.12 0.79 1.13 1.39

0.13 0.83 1.18 1.45

0.13 0.87 1.23 1.51

0.14 0.90 1.28 1.58

0.15 0.94 1.33 1.64

0.15 0.97 1.38 1.70

0.16 1.01 1.43 1.76

0.16 1.05 1.49 1.83

0.17 1.08 1.54 1.89

0.17 1.12 1.59 1.95

0.18 1.16 1.64 2.02

0.18 1.19 1.69 2.08

0.19 1.23 1.74 2.14

0.20 1.26 1.79 2.21

920

940

960

980

1000

1020

1040

1060

1080

1100

1120

1140

1160

1180

1200

18.18 22.79 25.01 27.68 30.25 32.71 37.29 42.13 46.80 48.96 50.73 52.09 53.17

18.40 23.07 25.30 28.00 30.59 33.06 37.63 42.43 47.00 49.07 50.72 51.93 52.79

-

-

-

- -

- - - -

19.01 23.83 26.13 28.88 31.50 33.98 38.52 43.15 47.32 49.05 50.30 51.01

-

-

-

-

- - - -

- -

- - - - -

- - - - -

19.90 24.91 27.27 30.07 32.70 35.16 39.50 43.66 46.89 47.90

-

- - - -

19.57 24.51 26.85 29.64 32.27 34.75 39.19 43.56 47.21 48.54 49.28

19.74 24.72 27.07 29.86 32.50 34.96 39.36 43.63 47.08 48.25

- - - - -

- - - - -

20.20 25.27 27.64 30.45 33.07 35.49 39.71 43.61 46.37 47.02

20.34 25.44 27.81 30.62 33.22 35.63 39.78 43.53 46.04

20.47 25.59 27.97 30.77 33.36 35.74 39.82 43.41 45.64

- - - - - - - -

- - - - - - - -

20.59 25.73 28.11 30.90 33.48 35.84 39.83 43.26 45.20

0.26 1.66 2.36 2.90

0.26 1.70 2.41 2.96

0.27 1.73 2.46 3.02

0.27 1.77 2.51 3.09

0.28 1.81 2.56 3.15

0.28 1.84 2.61 3.21

0.29 1.88 2.66 3.28

0.30 1.91 2.72 3.34

0.30 1.95 2.77 3.40

0.31 1.99 2.82 3.47

0.31 2.02 2.87 3.53

0.32 2.06 2.92 3.59

0.32 2.09 2.97 3.65

0.33 2.13 3.02 3.72

0.34 2.17 3.07 3.78

1220

1240

1260

1280

1300

1320

1340

1360

1380

1400

- - - - - - - -

20.81 25.98 28.36 31.13 33.67 35.96 39.76 42.83

20.91 26.09 28.46 31.22 33.74 35.99 39.68 42.55

21.00 26.19 28.56 31.30 33.78 36.00 39.57 42.23

- - - - - - - -

- - - - - - - - -

21.08 26.27 28.63 31.36 33.81 35.98 39.44 41.87

- - - - - - - - -

21.22 26.41 28.75 31.42 33.81 35.89 39.07 41.03

21.28 26.46 28.78 31.43 33.78 35.81 38.84 40.55

21.32 26.49 28.81 31.43 33.73 35.70 38.58

- - - - - - - - - -

- - - - - - - - - -

21.36 26.52 28.81 31.40 33.66 35.57 38.29

0.34 2.20 3.13 3.84

0.35 2.24 3.18 3.91

0.35 2.27 3.23 3.97

0.36 2.31 3.28 4.03

0.36 2.35 3.33 4.10

0.37 2.38 3.38 4.16

0.37 2.42 3.43 4.22

0.38 2.45 3.48 4.29

0.39 2.49 3.54 4.35

0.39 2.53 3.59 4.41

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-29

Calculation of V-belt drives design

Power Rating Table

5

E/40-Section Power Rating

Table 2-29 small pulley speed nd(rpm)

450 500 560

Basic power rating for small pulley datum diameter : Ps

Small pulley datum diameter dd (mm)

630 670 710 750 800 850 900 950 1000

620

640

660

680

700

720

740

760

780

800

450

700

950

1450

20

40

60

80

100

120

140

160

180

200

220

240

260

280

300

320

340

360

380

400

420

440

460

480

500

520

540

560

580

600

820

840

860

880

900

920

940

960

980

1000

1020

1040

1060

1080

1100

1120

1140

1160

1180

1200

1220

1240

1260

1280

1300

7.88 9.37 11.14 13.18 14.33 15.48 16.62 18.03 19.42 20.81 22.19 23.55

8.80 10.48 12.48 14.77 16.07 17.36 18.63 20.21 21.78 23.33 24.87 26.40

9.70 11.57 13.78 16.32 17.76 19.18 20.59 22.34 24.07 25.78 27.48 29.15

10.58 12.63 15.05 17.83 19.41 20.96 22.50 24.41 26.30 28.16 30.00 31.82

11.43 13.66 16.29 19.31 21.01 22.70 24.36 26.42 28.46 30.47 32.45 34.41

12.26 14.66 17.50 20.75 22.58 24.39 26.18 28.38 30.56 32.71 34.82 36.90

13.07 15.65 18.68 22.15 24.10 26.03 27.94 30.29 32.60 34.87 37.11 39.31

13.87 16.60 19.83 23.52 25.59 27.64 29.65 32.14 34.57 36.97 39.32 41.63

14.64 17.54 20.96 24.86 27.04 29.20 31.32 33.93 36.48 38.99 41.45 43.85

19.87 23.88 28.54 33.76 36.64 39.45 42.17 45.45 48.61 51.62 54.48 57.20

26.35 31.61 37.49 43.73 46.97 49.97 52.70 55.74 58.33 60.46 62.09 63.22

29.68 35.23 40.94 46.16 48.40 50.05 51.09 51.48

24.36

- - - -

- - - - - - - - - -

1.48 1.73 2.03 2.38 2.58 2.78 2.97 3.22 3.46 3.70 3.94 4.18

2.71 3.19 3.76 4.41 4.79 5.16 5.53 5.99 6.44 6.90 7.35 7.80

3.84 4.53 5.36 6.31 6.85 7.39 7.92 8.59 9.24 9.90

12.77

6.92 8.22 9.77 11.55 12.55 13.55 14.55 15.78 17.00 18.21 19.42 20.62

14.45

5.94 7.04 8.35 9.86 10.72 11.57 12.41 13.46 14.50 15.54 16.57 17.59

16.13 19.35 23.13 27.43 29.82 32.18 34.50 37.34 40.11 42.81 45.44 48.00

16.85 20.22 24.17 28.66 31.16 33.61 36.01 38.95 41.82 44.60 47.30 49.92

15.39 18.46 22.06 26.16 28.45 30.71 32.93 35.66 38.33 40.94 43.49 45.97

17.55 21.07 25.19 29.85 32.45 34.99 37.48 40.51 43.45 46.31 49.07 51.74

18.24 21.90 26.18 31.02 33.70 36.32 38.89 42.00 45.02 47.93 50.74 53.44

18.90 22.71 27.14 32.14 34.91 37.61 40.24 43.43 46.51 49.47 52.32 55.03

19.55 23.49 28.08 33.23 36.08 38.85 41.54 44.80 47.93 50.93 53.79 56.51

20.19 24.26 28.98 34.28 37.20 40.03 42.78 46.09 49.26 52.29 55.15 57.86

20.80 25.00 29.86 35.30 38.28 41.17 43.97 47.32 50.52 53.55 56.41 59.09

21.40 25.72 30.71 36.27 39.31 42.25 45.09 48.48 51.69 54.72 57.56 60.19

21.97 26.41 31.53 37.21 40.30 43.29 46.15 49.56 52.78 55.79 58.59 61.16

22.54 27.08 32.32 38.10 41.25 44.26 47.15 50.58 53.78 56.76 59.50 61.99

23.08 27.73 33.08 38.96 42.14 45.19 48.09 51.51 54.69 57.62 60.29 62.68

24.11 28.96 34.50 40.54 43.78 46.86 49.76 53.14 56.23 59.02 61.49 63.63

24.59 29.54 35.17 41.27 44.53 47.60 50.49 53.83 56.86 59.55 61.89 63.87

25.06 30.10 35.80 41.96 45.22 48.29 51.16 54.44 57.38 59.96 62.15 63.95

-

-

-

-

-

-

-

-

-

25.94 31.13 36.96 43.19 46.44 49.47 52.26 55.40 58.12 60.42 62.26 63.63

26.35 31.61 37.49 43.73 46.97 49.97 52.70 55.74 58.33 60.46 62.09 63.22

-

27.11 32.48 38.45 44.67 47.86 50.75 53.35 56.14 58.42 60.15 61.30 61.86

27.46 32.88 38.87 45.07 48.21 51.04 53.55 56.20 58.29 59.79 60.67 60.91

-

-

-

-

-

-

-

-

-

-

-

-

-

-

27.78 33.25 39.25 45.42 48.51 51.26 53.67 56.16 58.04 59.30 59.88

28.09 33.60 39.60 45.71 48.74 51.41 53.70 56.01 57.68 58.66 58.92

29.84 35.35 40.92 45.86 47.86 49.22 49.91

-

28.88 34.45 40.41 46.28 49.06 51.40 53.28 54.95 55.83

29.10 34.68 40.60 46.35 49.03 51.24 52.96 54.38 54.95

-

28.64 34.20 40.18 46.14 49.02 51.48 53.51 55.41 56.57 56.94

- - - - -

- - - - -

29.29 34.88 40.75 46.37 48.94 51.00 52.55 53.70

- - - - - - - -

29.61 35.18 40.92 46.23 48.54 50.28 51.43 51.98

- -

- - - - - - - -

- - - - - - - 29.92 35.39 40.85 45.57 47.40 48.56 49.00

29.97 35.39 40.74 45.23 46.87 47.81

29.99 35.36 40.58 44.82 46.27 46.96

29.99 35.30 40.38 44.34 45.58 46.03

- - - - - - - - -

- - - - - - - - -

- - - - - - - - -

44.82

- - - - - - - - -

29.84 39.47 42.51 43.05

- - - - - - - - - -

- - - - - - - - - -

- - - - - - - - - -

29.73

29.60

29.44

29.25 - - - - - - - - - -

29.03

28.79

28.51

28.21

33.50 36.94

- - - - - - - - - -

- - - - - - - - - - -

- - - - - - - - - - -

[kW]

Additional power rating for speed ratio (Pa)

Speed ratio

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.21 1.37 1.95 2.40

0.33 2.13 3.03 3.73

0.45 2.90 4.11 5.06

0.68 4.42 6.28 7.72

0.01 0.06 0.09 0.11

0.02 0.12 0.17 0.21

0.03 0.18 0.26 0.32

0.04 0.24 0.35 0.43

0.05 0.30 0.43 0.53

0.06 0.37 0.52 0.64

0.07 0.43 0.61 0.75

0.08 0.49 0.69 0.85

0.08 0.55 0.78 0.96

0.09 0.61 0.87 1.06

0.10 0.67 0.95 1.17

0.11 0.73 1.04 1.28

0.12 0.79 1.13 1.38

0.13 0.85 1.21 1.49

0.14 0.91 1.30 1.60

0.15 0.98 1.39 1.70

0.16 1.04 1.47 1.81

0.17 1.10 1.56 1.92

0.18 1.16 1.65 2.02

0.19 1.22 1.73 2.13

0.20 1.28 1.82 2.24

0.21 1.34 1.90 2.34

0.22 1.40 1.99 2.45

0.23 1.46 2.08 2.56

0.24 1.52 2.16 2.66

0.25 1.59 2.25 2.77

0.25 1.65 2.34 2.87

0.26 1.71 2.42 2.98

0.27 1.77 2.51 3.09

0.28 1.83 2.60 3.19

0.29 1.89 2.68 3.30

0.30 1.95 2.77 3.41

0.31 2.01 2.86 3.51

0.32 2.07 2.94 3.62

0.33 2.13 3.03 3.73

0.34 2.20 3.12 3.83

0.35 2.26 3.20 3.94

0.36 2.32 3.29 4.05

0.37 2.38 3.38 4.15

0.38 2.44 3.46 4.26

0.39 2.50 3.55 4.37

0.40 2.56 3.64 4.47

0.41 2.62 3.72 4.58

0.42 2.68 3.81 4.68

0.42 2.74 3.90 4.79

0.43 2.81 3.98 4.90

0.44 2.87 4.07 5.00

0.45 2.93 4.16 5.11

0.46 2.99 4.24 5.22

0.47 3.05 4.33 5.32

0.48 3.11 4.42 5.43

0.49 3.17 4.50 5.54

0.50 3.23 4.59 5.64

0.51 3.29 4.68 5.75

0.52 3.35 4.76 5.86

0.53 3.42 4.85 5.96

0.54 3.48 4.94 6.07

0.55 3.54 5.02 6.18

0.56 3.60 5.11 6.28

0.57 3.66 5.19 6.39

0.58 3.72 5.28 6.49

0.58 3.78 5.37 6.60

0.59 3.84 5.45 6.71

0.60 3.90 5.54 6.81

0.61 3.96 5.63 6.92

2

Design

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-30

5 Calculation of V-belt drives design

Power Rating Table

SPZ-Section Power Rating

2

Design

Table 2-30

[kW] small pulley speed nd(rpm)

700

950

1450

2850

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

5100

5200

5300

5400

5500

5600

5800

6000

6200

6400

6600

6800

7000

7200

7400

7600

7800

8000

8200

8400

63 71 80

Basic power rating for small pulley datum diameter : Ps

85 90

Small pulley datum diameter dd (mm)

95 100 112 125 132 140 150 160 180 200

0.49 0.68 0.88 0.99 1.10 1.22 1.33 1.59 1.88 2.03 2.20 2.41 2.63 3.05 3.47

0.63 0.87 1.14 1.29 1.44 1.58 1.73 2.08 2.46 2.66 2.88 3.17 3.45 4.00 4.54

0.87 1.22 1.62 1.84 2.06 2.27 2.49 3.00 3.54 3.83 4.16 4.57 4.97 5.75 6.52

10.58

0.10 0.13 0.16 0.18 0.20 0.22 0.23 0.28 0.32 0.35 0.38 0.41 0.45 0.52 0.59

0.18 0.23 0.30 0.33 0.37 0.40 0.44 0.52 0.61 0.66 0.71 0.78 0.85 0.98 1.11

0.25 0.33 0.42 0.47 0.53 0.58 0.63 0.75 0.88 0.95 1.03 1.13 1.22 1.42 1.61

0.31 0.42 0.54 0.61 0.68 0.74 0.81 0.97 1.14 1.23 1.33 1.46 1.59 1.84 2.09

0.38 0.51 0.66 0.74 0.82 0.91 0.99 1.18 1.39 1.50 1.63 1.79 1.94 2.25 2.56

0.44 0.59 0.77 0.87 0.97 1.06 1.16 1.39 1.64 1.77 1.92 2.10 2.29 2.66 3.02

0.49 0.68 0.88 0.99 1.10 1.22 1.33 1.59 1.88 2.03 2.20 2.41 2.63 3.05 3.47

0.55 0.76 0.99 1.11 1.24 1.37 1.49 1.79 2.11 2.28 2.48 2.72 2.96 3.44 3.91

0.60 0.83 1.09 1.23 1.37 1.51 1.65 1.98 2.34 2.53 2.75 3.02 3.29 3.81 4.33

0.65 0.91 1.19 1.35 1.50 1.66 1.81 2.18 2.57 2.78 3.02 3.31 3.60 4.18 4.75

0.70 0.98 1.29 1.46 1.63 1.80 1.96 2.36 2.79 3.02 3.28 3.60 3.92 4.55 5.16

0.75 1.05 1.39 1.57 1.75 1.94 2.12 2.55 3.01 3.26 3.54 3.88 4.22 4.90 5.56

0.80 1.12 1.48 1.68 1.88 2.07 2.27 2.73 3.23 3.49 3.79 4.16 4.53 5.25 5.95

0.84 1.19 1.57 1.79 2.00 2.21 2.41 2.91 3.44 3.72 4.04 4.43 4.82 5.59 6.33

0.89 1.26 1.67 1.89 2.11 2.34 2.56 3.08 3.64 3.94 4.28 4.70 5.11 5.92 6.70

0.93 1.32 1.76 1.99 2.23 2.47 2.70 3.26 3.85 4.16 4.52 4.96 5.39 6.24 7.06

0.97 1.39 1.84 2.10 2.35 2.59 2.84 3.43 4.05 4.38 4.75 5.22 5.67 6.56 7.41

1.01 1.45 1.93 2.20 2.46 2.72 2.98 3.59 4.25 4.59 4.98 5.47 5.94 6.86 7.75

1.05 1.51 2.02 2.29 2.57 2.84 3.11 3.76 4.44 4.80 5.21 5.71 6.20 7.16 8.08

1.09 1.57 2.10 2.39 2.68 2.96 3.25 3.92 4.63 5.01 5.43 5.95 6.46 7.45 8.40

1.13 1.63 2.18 2.48 2.78 3.08 3.38 4.08 4.81 5.21 5.65 6.19 6.71 7.73 8.70

1.17 1.69 2.26 2.58 2.89 3.20 3.51 4.23 5.00 5.40 5.86 6.41 6.96 8.01 9.00

1.20 1.74 2.34 2.67 2.99 3.31 3.63 4.38 5.17 5.59 6.06 6.64 7.19 8.27 9.28

1.24 1.80 2.42 2.76 3.09 3.43 3.76 4.53 5.35 5.78 6.26 6.85 7.42 8.52 9.54

1.27 1.85 2.49 2.85 3.19 3.54 3.88 4.68 5.52 5.96 6.46 7.06 7.65 8.76 9.80

1.31 1.91 2.57 2.93 3.29 3.64 4.00 4.82 5.69 6.14 6.65 7.26 7.86 8.99 10.04

1.34 1.96 2.64 3.02 3.39 3.75 4.11 4.96 5.85 6.31 6.83 7.46 8.07 9.22

1.37 2.01 2.71 3.10 3.48 3.85 4.23 5.10 6.01 6.48 7.01 7.65 8.27 9.43

1.40 2.06 2.78 3.18 3.57 3.96 4.34 5.23 6.16 6.64 7.18 7.83 8.46 9.63

10.85

10.67

1.43 2.11 2.85 3.26 3.66 4.06 4.45 5.36 6.31 6.80 7.35 8.01 8.64 9.81

1.46 2.15 2.92 3.34 3.75 4.15 4.55 5.48 6.45 6.95 7.51 8.18 8.82 9.99

1.49 2.20 2.98 3.41 3.83 4.25 4.66 5.61 6.59 7.10 7.67 8.34 8.98

11.02

10.15

10.30

11.17

10.44

-

11.30

11.41

1.56 2.33 3.17 3.63 4.08 4.52 4.95 5.96 6.99 7.51 8.09 8.78 9.42

10.78

11.69

10.93

1.67 2.52 3.45 3.95 4.44 4.92 5.39 6.46 7.54 8.08 8.67 9.35 9.96

1.74 2.66 3.65 4.18 4.69 5.20 5.69 6.79 7.89 8.43 9.00 9.64

-

-

1.59 2.37 3.23 3.70 4.15 4.60 5.04 6.06 7.11 7.64 8.22 8.91 9.55

-

-

-

-

-

-

-

-

-

-

-

-

-

-

10.16

-

-

11.59

10.86

1.65 2.49 3.40 3.89 4.37 4.85 5.31 6.37 7.44 7.98 8.57 9.25 9.88

-

1.69 2.56 3.50 4.01 4.51 4.99 5.47 6.55 7.64 8.18 8.76 9.44

10.11 11.05

1.73 2.63 3.60 4.12 4.63 5.13 5.62 6.72 7.81 8.35 8.93 9.58

-

-

-

-

-

-

-

-

-

1.76 2.69 3.69 4.23 4.75 5.26 5.75 6.87 7.96 8.50 9.06 9.69

1.77 2.71 3.73 4.28 4.81 5.32 5.82 6.94 8.03 8.56 9.12 9.73

-

1.84 2.86 3.95 4.52 5.08 5.61 6.12 7.25 8.30 8.79 9.27

10.26

1.80 2.77 3.81 4.37 4.91 5.43 5.93 7.06 8.14 8.67 9.20 9.78

1.82 2.82 3.88 4.45 5.00 5.53 6.04 7.16 8.23 8.74 9.25 9.79

-

-

-

-

-

- - - - - - -

- - - - - - - -

1.85 2.89 4.00 4.59 5.15 5.69 6.20 7.32 8.34 8.80 9.25

1.85 2.91 4.03 4.62 5.18 5.72 6.23 7.34 8.35 8.80

1.86 2.98 4.15 4.75 5.32 5.86 6.35 7.38

1.86 2.92 4.05 4.65 5.21 5.75 6.26 7.36 8.35 8.78

1.86 2.95 4.09 4.69 5.26 5.80 6.31 7.39 8.33

1.86 2.97 4.13 4.73 5.30 5.83 6.34 7.40 8.29

-

-

-

-

-

-

-

-

-

-

-

- - - - - - - -

- - - - - - - - -

- - - - - - - - -

- - - - - - - - -

- - - - - - - - 1.85 2.99 4.16 4.77 5.34 5.86 6.35 7.34

5.49

1.73 2.92 4.10 4.68 5.21 5.68 6.08

1.69 2.88 4.06 4.63 5.14 5.59 5.97

1.84 2.99 4.17 4.77 5.34 5.86 6.33 7.28

- - - - - - - - - -

1.79 2.96 4.15 4.75 5.30 5.80 6.24

1.76 2.94 4.13 4.72 5.26 5.75 6.17

- - - - - - - - - -

- - - - - - - - - -

1.60

1.54 - - - - - - - - - - -

- - - - - - - - - - -

Additional power rating for speed ratio (Pa)

Speed ratio

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.01 0.06 0.09 0.11

0.01 0.09 0.12 0.15

0.02 0.13 0.19 0.23

0.04 0.26 0.37 0.46

0.00 0.01 0.01 0.02

0.00 0.02 0.03 0.03

0.00 0.03 0.04 0.05

0.01 0.04 0.05 0.06

0.01 0.05 0.07 0.08

0.01 0.06 0.08 0.10

0.01 0.06 0.09 0.11

0.01 0.07 0.11 0.13

0.01 0.08 0.12 0.15

0.01 0.09 0.13 0.16

0.02 0.10 0.14 0.18

0.02 0.11 0.16 0.19

0.02 0.12 0.17 0.21

0.02 0.13 0.18 0.23

0.02 0.14 0.20 0.24

0.02 0.15 0.21 0.26

0.02 0.16 0.22 0.27

0.03 0.17 0.24 0.29

0.03 0.18 0.25 0.31

0.03 0.19 0.26 0.32

0.03 0.19 0.28 0.34

0.03 0.20 0.29 0.36

0.03 0.21 0.30 0.37

0.03 0.22 0.32 0.39

0.04 0.23 0.33 0.40

0.04 0.24 0.34 0.42

0.04 0.25 0.35 0.44

0.04 0.26 0.37 0.45

0.04 0.27 0.38 0.47

0.04 0.28 0.39 0.48

0.04 0.29 0.41 0.50

0.05 0.30 0.42 0.52

0.05 0.31 0.43 0.53

0.05 0.31 0.45 0.55

0.05 0.32 0.46 0.57

0.05 0.33 0.47 0.58

0.05 0.34 0.49 0.60

0.05 0.35 0.50 0.61

0.06 0.36 0.51 0.63

0.06 0.37 0.53 0.65

0.06 0.38 0.54 0.66

0.06 0.39 0.55 0.68

0.06 0.40 0.56 0.69

0.06 0.41 0.58 0.71

0.06 0.42 0.59 0.73

0.07 0.43 0.60 0.74

0.07 0.43 0.62 0.76

0.07 0.44 0.63 0.78

0.07 0.45 0.64 0.79

0.07 0.46 0.66 0.81

0.07 0.47 0.67 0.82

0.07 0.48 0.68 0.84

0.08 0.49 0.70 0.86

0.08 0.50 0.71 0.87

0.08 0.51 0.72 0.89

0.08 0.52 0.74 0.90

0.08 0.54 0.76 0.94

0.09 0.56 0.79 0.97

0.09 0.57 0.81 1.00

0.09 0.59 0.84 1.03

0.09 0.61 0.87 1.07

0.10 0.63 0.89 1.10

0.10 0.65 0.92 1.13

0.10 0.67 0.95 1.16

0.11 0.68 0.97 1.20

0.11 0.70 1.00 1.23

0.11 0.72 1.02 1.26

0.11 0.74 1.05 1.29

0.12 0.76 1.08 1.32

0.12 0.78 1.10 1.36

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-31

Calculation of V-belt drives design

Power Rating Table

5

SPZX(3VX)-Section Power Rating

Table 2-31 small pulley speed nd(rpm)

700

950

1450

2850

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

5100

5200

5300

5400

5500

5600

5800

6000

6200

6400

6600

6800

7000

7200

7400

7600

7800

8000

8200

8400

56 60 63

Basic power rating for small pulley datum diameter : Ps

71 80

Small pulley datum diameter dd (mm)

85 90 95 100 112 125 140 160 180 200

0.63 0.73 0.81 1.00 1.22 1.34 1.46 1.58 1.70 1.99 2.29 2.63 3.08 3.53 3.97

0.80 0.93 1.03 1.29 1.58 1.74 1.90 2.05 2.21 2.58 2.98 3.43 4.02 4.60 5.17

1.10 1.30 1.44 1.82 2.24 2.47 2.70 2.92 3.15 3.68 4.26 4.90 5.74 6.57 7.37

1.78 2.13 2.38 3.06 3.81 4.22 4.62 5.02 5.41 6.33 7.30 8.38 9.74

0.13 0.14 0.16 0.19 0.23 0.25 0.27 0.29 0.31 0.36 0.41 0.47 0.55 0.63 0.70

0.23 0.26 0.28 0.35 0.42 0.46 0.50 0.53 0.57 0.66 0.76 0.87 1.02 1.17 1.31

0.32 0.37 0.40 0.49 0.59 0.65 0.71 0.76 0.82 0.95 1.09 1.25 1.46 1.67 1.88

0.40 0.46 0.51 0.63 0.76 0.83 0.91 0.98 1.05 1.22 1.40 1.61 1.89 2.16 2.43

0.48 0.56 0.61 0.76 0.92 1.01 1.10 1.19 1.27 1.48 1.71 1.96 2.30 2.63 2.96

0.56 0.65 0.71 0.88 1.07 1.18 1.28 1.39 1.49 1.74 2.00 2.30 2.70 3.09 3.47

0.63 0.73 0.81 1.00 1.22 1.34 1.46 1.58 1.70 1.99 2.29 2.63 3.08 3.53 3.97

0.70 0.81 0.90 1.12 1.37 1.50 1.64 1.77 1.91 2.23 2.57 2.95 3.46 3.96 4.46

0.77 0.89 0.99 1.24 1.51 1.66 1.81 1.96 2.11 2.46 2.84 3.27 3.83 4.39 4.93

0.83 0.97 1.07 1.35 1.65 1.81 1.98 2.14 2.31 2.69 3.11 3.58 4.20 4.80 5.40

0.90 1.05 1.16 1.46 1.78 1.96 2.14 2.32 2.50 2.92 3.37 3.88 4.55 5.21 5.85

0.96 1.12 1.24 1.56 1.92 2.11 2.31 2.50 2.69 3.14 3.63 4.18 4.90 5.61 6.30

1.02 1.19 1.32 1.67 2.05 2.26 2.46 2.67 2.88 3.36 3.88 4.47 5.24 6.00 6.73

1.07 1.26 1.40 1.77 2.17 2.40 2.62 2.84 3.06 3.58 4.13 4.76 5.58 6.38 7.16

1.13 1.33 1.48 1.87 2.30 2.54 2.77 3.01 3.24 3.79 4.38 5.04 5.91 6.75 7.57

1.19 1.40 1.55 1.97 2.42 2.67 2.92 3.17 3.42 4.00 4.62 5.32 6.23 7.12 7.98

1.24 1.46 1.63 2.06 2.54 2.81 3.07 3.33 3.59 4.20 4.85 5.59 6.55 7.48 8.38

1.29 1.53 1.70 2.16 2.66 2.94 3.22 3.49 3.76 4.40 5.09 5.86 6.86 7.83 8.76

1.34 1.59 1.77 2.25 2.78 3.07 3.36 3.65 3.93 4.60 5.32 6.12 7.16 8.17 9.14

1.39 1.65 1.84 2.34 2.90 3.20 3.50 3.80 4.10 4.80 5.54 6.38 7.46 8.50 9.51

1.44 1.71 1.91 2.43 3.01 3.33 3.64 3.95 4.26 4.99 5.76 6.63 7.75 8.83 9.86

11.39

10.95

11.51

11.69

-

-

-

-

-

-

-

-

-

12.77

10.21

1.54 1.83 2.04 2.61 3.23 3.57 3.91 4.25 4.58 5.37 6.19 7.12 8.32 9.46

1.58 1.88 2.11 2.69 3.34 3.69 4.05 4.39 4.74 5.55 6.40 7.36 8.59 9.76

10.09

1.88 2.25 2.53 3.25 4.05 4.49 4.92 5.34 5.76 6.74 7.77 8.90

2.03 2.44 2.75 3.55 4.43 4.91 5.38 5.84 6.30 7.36 8.46 9.66

11.85

10.79

2.29 2.77 3.14 4.08 5.10 5.65 6.19 6.72 7.24 8.43 9.64

2.32 2.81 3.18 4.14 5.18 5.74 6.29 6.82 7.35 8.55 9.77

10.92

10.53

10.74

-

-

-

10.05

11.33

10.34

1.72 2.05 2.29 2.94 3.66 4.05 4.43 4.81 5.19 6.08 7.01 8.05 9.37

1.76 2.10 2.35 3.02 3.76 4.16 4.56 4.95 5.34 6.25 7.21 8.27 9.62

1.80 2.15 2.41 3.10 3.86 4.27 4.68 5.08 5.48 6.42 7.40 8.48 9.86

-

11.78

12.05

12.32

12.58

12.82

13.05

13.26

12.28

13.83

13.99

13.45

-

-

-

-

-

-

-

10.34

2.20 2.66 3.00 3.89 4.86 5.39 5.90 6.41 6.91 8.06 9.23

2.23 2.70 3.04 3.95 4.94 5.48 6.00 6.52 7.02 8.19 9.37

- 11.05

2.35 2.85 3.22 4.20 5.25 5.82 6.38 6.92 7.45 8.67 9.89

2.37 2.89 3.27 4.25 5.33 5.90 6.47 7.02 7.55 8.78

- 12.16

-

-

-

- -

10.13

2.43 2.96 3.35 4.37 5.47 6.06 6.64 7.20 7.75 8.99

2.45 2.99 3.39 4.42 5.54 6.14 6.72 7.29 7.84 9.10

10.01

10.24

-

-

-

-

11.61

- -

10.53 11.79

-

-

-

-

- 2.48 3.02 3.43 4.47 5.60 6.21 6.80 7.37 7.93 9.19

2.50 3.05 3.46 4.53 5.67 6.28 6.88 7.46 8.02 9.29 -

-

-

-

-

-

-

-

- - - - -

- - - - - -

-

-

-

-

-

-

-

-

2.57 3.14 3.57 4.67 5.86 6.49 7.10 7.69 8.26 9.55

2.59 3.17 3.60 4.72 5.92 6.55 7.17 7.77 8.34 9.62

2.76 3.43 3.91 5.15 6.45 7.13 7.78 8.39 8.97

- - - - - - - - - -

- - - - - - - - - -

- - - - - - - - - - -

- - - - - - - - - - -

2.85 3.60 4.14 5.48 6.83 7.50 8.10

- - - - - -

- - - - - -

- - - - - -

2.71 3.35 3.81 5.01 6.28 6.95 7.59 8.20 8.79

2.74 3.39 3.86 5.08 6.37 7.05 7.69 8.30 8.89

- - - - - - - - -

2.85 3.57 4.10 5.43 6.78 7.46 8.10 8.68

2.85 3.59 4.12 5.45 6.80 7.48 8.11 8.68

- - - - - - - - - -

2.83 3.54 4.05 5.36 6.70 7.39 8.03 8.63 9.18

2.84 3.56 4.08 5.39 6.74 7.43 8.07 8.66 9.20

10.71

- - - - - - - - - -

- - - - - - - - - -

-

10.21

2.81 3.49 3.99 5.26 6.59 7.28 7.93 8.54 9.10

2.82 3.52 4.02 5.31 6.65 7.34 7.99 8.59 9.15

12.01

- - -

- - - - - - - - - -

- - - - - - - - - - -

-

-

-

-

-

-

-

-

-

-

[kW]

Additional power rating for speed ratio (Pa)

Speed ratio

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.01 0.06 0.08 0.10

0.01 0.08 0.11 0.13

0.02 0.12 0.16 0.20

0.04 0.23 0.32 0.40

0.00 0.01 0.01 0.01

0.00 0.02 0.02 0.03

0.00 0.02 0.03 0.04

0.00 0.03 0.05 0.06

0.01 0.04 0.06 0.07

0.01 0.05 0.07 0.08

0.01 0.06 0.08 0.10

0.01 0.06 0.09 0.11

0.01 0.07 0.10 0.13

0.01 0.08 0.11 0.14

0.01 0.09 0.12 0.15

0.01 0.10 0.14 0.17

0.02 0.10 0.15 0.18

0.02 0.11 0.16 0.20

0.02 0.12 0.17 0.21

0.02 0.13 0.18 0.22

0.02 0.14 0.19 0.24

0.02 0.14 0.20 0.25

0.02 0.15 0.22 0.27

0.02 0.16 0.23 0.28

0.03 0.17 0.24 0.29

0.03 0.18 0.25 0.31

0.03 0.18 0.26 0.32

0.03 0.19 0.27 0.33

0.03 0.20 0.28 0.35

0.03 0.21 0.30 0.36

0.03 0.22 0.31 0.38

0.03 0.22 0.32 0.39

0.04 0.23 0.33 0.40

0.04 0.24 0.34 0.42

0.04 0.25 0.35 0.43

0.04 0.26 0.36 0.45

0.04 0.26 0.37 0.46

0.04 0.27 0.39 0.47

0.04 0.28 0.40 0.49

0.04 0.29 0.41 0.50

0.05 0.30 0.42 0.52

0.05 0.30 0.43 0.53

0.05 0.31 0.44 0.54

0.05 0.32 0.45 0.56

0.05 0.33 0.47 0.57

0.05 0.34 0.48 0.59

0.05 0.34 0.49 0.60

0.05 0.35 0.50 0.61

0.06 0.36 0.51 0.63

0.06 0.37 0.52 0.64

0.06 0.38 0.53 0.66

0.06 0.38 0.54 0.67

0.06 0.39 0.56 0.68

0.06 0.40 0.57 0.70

0.06 0.41 0.58 0.71

0.06 0.42 0.59 0.73

0.07 0.42 0.60 0.74

0.07 0.43 0.61 0.75

0.07 0.44 0.62 0.77

0.07 0.45 0.64 0.78

0.07 0.46 0.66 0.81

0.07 0.48 0.68 0.84

0.08 0.50 0.70 0.87

0.08 0.51 0.73 0.89

0.08 0.53 0.75 0.92

0.08 0.54 0.77 0.95

0.09 0.56 0.79 0.98

0.09 0.58 0.82 1.00

0.09 0.59 0.84 1.03

0.09 0.61 0.86 1.06

0.10 0.62 0.89 1.09

0.10 0.64 0.91 1.12

0.10 0.66 0.93 1.14

0.10 0.67 0.95 1.17

2

Design

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

Note:Pulley diameters shown are outside diameters for section 3VX

2-32

5 Calculation of V-belt drives design

Power Rating Table

SPA-Section Power Rating

2

Design

Table 2-32

[kW] small pulley speed nd(rpm)

700

950

1450

2850

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

5100

5200

5300

5400

5500

5600

5700

5800

5900

6000

6100

6200

6300

6400

6500

6600

6700

6800

6900

7000

Basic power rating for small pulley datum diameter : Ps

Small pulley datum diameter dd (mm)

Additional power rating for speed ratio (Pa)

Speed ratio

90 100 112 118 125 132 140 150 160 180 200 224 250 280 315

10.88

3.35 4.76 6.39 7.18 8.07 8.94 9.90

3.39 4.83 6.49 7.29 8.20 9.07

3.43 4.90 6.58 7.39 8.31 9.20

3.46 4.95 6.67 7.49 8.42 9.31

3.54 5.10 6.88 7.73 8.68 9.59

1.17 1.54 1.98 2.20 2.46 2.71 3.00 3.36 3.72 4.43 5.13 5.96 6.85 7.86 9.01

1.48 1.97 2.56 2.85 3.19 3.53 3.91 4.38 4.85 5.78 6.69 7.77 8.92

12.59

- 3.13 4.40 5.88 6.60 7.43 8.23 9.13

14.30

-

0.23 0.29 0.37 0.40 0.44 0.49 0.53 0.59 0.65 0.77 0.88 1.02 1.17 1.34 1.54

0.42 0.53 0.67 0.74 0.82 0.90 0.99 1.11 1.22 1.44 1.67 1.93 2.21 2.54 2.92

0.59 0.76 0.96 1.06 1.18 1.29 1.43 1.59 1.76 2.08 2.41 2.79 3.20 3.68 4.22

0.74 0.97 1.23 1.36 1.51 1.67 1.84 2.06 2.27 2.70 3.12 3.62 4.16 4.77 5.48

0.89 1.16 1.49 1.65 1.84 2.03 2.24 2.50 2.77 3.29 3.81 4.42 5.08 5.83 6.70

1.03 1.35 1.74 1.93 2.15 2.37 2.63 2.94 3.25 3.87 4.48 5.20 5.98 6.86 7.87

1.17 1.54 1.98 2.20 2.46 2.71 3.00 3.36 3.72 4.43 5.13 5.96 6.85 7.86 9.01

1.29 1.72 2.22 2.47 2.76 3.04 3.37 3.78 4.18 4.98 5.77 6.70 7.70 8.82

1.54 2.06 2.67 2.98 3.33 3.68 4.08 4.58 5.07 6.04 7.00 8.12 9.32

10.11

1.42 1.89 2.45 2.73 3.05 3.37 3.73 4.18 4.63 5.52 6.39 7.42 8.52 9.76

12.18

1.65 2.22 2.89 3.22 3.61 3.99 4.42 4.96 5.50 6.55 7.59 8.80 10.09 11.53

10.84

13.16

12.37

2.18 2.97 3.90 4.36 4.89 5.42 6.02 6.76 7.49 8.91 10.29

11.56

12.25

12.91

11.89

14.08

14.96

13.94

16.57

2.62 3.62 4.79 5.36 6.03 6.69 7.42 8.33 9.22

3.57 5.18 7.00 7.86 8.82 9.73

11.19

11.44

11.84

10.79

3.59 5.25 7.11 7.98 8.95 9.85

3.58 5.27 7.14 8.01 8.97 9.87

3.58 5.27 7.15 8.03 8.99 9.88

3.54 5.27 7.16 8.03 8.97 9.83

10.49

2.92 4.06 5.41 6.07 6.82 7.57 8.40 9.41

2.98 4.17 5.55 6.23 7.00 7.77 8.62 9.66

3.04 4.26 5.69 6.38 7.18 7.96 8.83 9.89

3.10 4.36 5.82 6.53 7.35 8.14 9.03

3.16 4.45 5.95 6.67 7.51 8.32 9.23

3.21 4.53 6.07 6.81 7.66 8.49 9.41

3.26 4.61 6.18 6.94 7.81 8.65 9.58

11.37 13.33

11.77

15.08

12.27 14.21

12.77

12.56

12.56

13.74

12.52

16.90

17.96

-

-

19.58

18.48

-

-

-

-

-

-

15.83

-

-

-

-

-

13.55

14.15

15.26

15.76

16.20

-

-

-

-

-

-

-

16.59

16.22

16.65

17.39

17.19

-

-

-

-

-

-

-

-

-

-

17.29

17.96

19.10

19.57

19.98

20.31

18.87

-

-

-

-

-

-

14.50

- - - - - - - -

- - - - - - - -

- - - - - - - -

3.46

3.42

3.38

3.33

- - - - - - - - - -

- - - - - - - - - - -

5.05

3.04

4.70

2.89

2.80

2.71

2.62

4.18

2.41

2.30

2.19

7.98 9.73 10.57

- - - - - - - - - - -

7.17 7.89

- - - - - - - - - - -

- - - - - - - - - - -

- - - - - - - - - - -

- - - - - - - - - - - - - -

5.77

- - - - - - - - - - - - - -

- - - - - - - - - - - - - -

- - - - - - - - - - - - - -

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

- - - - - - - -

12.85

12.72

-

-

-

-

-

-

- - - - - - - - -

- - - - - - - - -

- - - - - - - - -

3.51 5.25 7.15 8.01 8.94 9.79

5.23 7.13

11.84

10.76

- - - - - - - - -

- - - - - - - - -

- - - - - - - - - -

- - - - - - - - - -

- - - - - - - - - -

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.02 0.15 0.21 0.26

0.03 0.20 0.29 0.36

0.05 0.31 0.44 0.54

0.09 0.61 0.87 1.07

0.00 0.02 0.03 0.04

0.01 0.04 0.06 0.08

0.01 0.06 0.09 0.11

0.01 0.09 0.12 0.15

0.02 0.11 0.15 0.19

0.02 0.13 0.18 0.23

0.02 0.15 0.21 0.26

0.03 0.17 0.24 0.30

0.03 0.19 0.28 0.34

0.03 0.22 0.31 0.38

0.04 0.24 0.34 0.41

0.04 0.26 0.37 0.45

0.04 0.28 0.40 0.49

0.05 0.30 0.43 0.53

0.05 0.32 0.46 0.56

0.05 0.34 0.49 0.60

0.06 0.37 0.52 0.64

0.06 0.39 0.55 0.68

0.06 0.41 0.58 0.71

0.07 0.43 0.61 0.75

0.07 0.45 0.64 0.79

0.07 0.47 0.67 0.83

0.08 0.50 0.70 0.86

0.08 0.52 0.73 0.90

0.08 0.54 0.76 0.94

0.09 0.56 0.79 0.98

0.09 0.58 0.83 1.01

0.09 0.60 0.86 1.05

0.10 0.62 0.89 1.09

0.10 0.65 0.92 1.13

0.10 0.67 0.95 1.16

0.11 0.69 0.98 1.20

0.11 0.71 1.01 1.24

0.11 0.73 1.04 1.28

0.12 0.75 1.07 1.32

0.12 0.78 1.10 1.35

0.12 0.80 1.13 1.39

0.13 0.82 1.16 1.43

0.13 0.84 1.19 1.47

0.13 0.86 1.22 1.50

0.14 0.88 1.25 1.54

0.14 0.90 1.28 1.58

0.14 0.93 1.31 1.62

0.15 0.95 1.34 1.65

0.15 0.97 1.38 1.69

0.15 0.99 1.41 1.73

0.16 1.01 1.44 1.77

0.16 1.03 1.47 1.80

0.16 1.05 1.50 1.84

0.17 1.08 1.53 1.88

0.17 1.10 1.56 1.92

0.17 1.12 1.59 1.95

0.18 1.14 1.62 1.99

0.18 1.16 1.65 2.03

0.18 1.18 1.68 2.07

0.19 1.21 1.71 2.10

0.19 1.23 1.74 2.14

0.19 1.25 1.77 2.18

0.20 1.27 1.80 2.22

0.20 1.29 1.83 2.25

0.20 1.31 1.86 2.29

0.21 1.33 1.89 2.33

0.21 1.36 1.93 2.37

0.21 1.38 1.96 2.40

0.22 1.40 1.99 2.44

0.22 1.42 2.02 2.48

0.22 1.44 2.05 2.52

0.23 1.46 2.08 2.56

0.23 1.49 2.11 2.59

0.23 1.51 2.14 2.63

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-33

Calculation of V-belt drives design

Power Rating Table

5

SPAX-Section Power Rating

Table 2-33

[kW] small pulley speed nd(rpm)

700

950

1450

2850

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

5100

5200

5300

5400

5500

5600

5700

5800

5900

6000

6100

6200

6300

6400

6500

6600

6700

6800

6900

7000

71 75 80

Basic power rating for small pulley datum diameter : Ps

90 100

Small pulley datum diameter dd (mm)

112 118 125 140 160 180 200 224 250 280

0.98 1.14 1.35 1.76 2.17 2.66 2.90 3.18 3.78 4.57 5.36 6.13 7.06 8.04 9.17

1.25 1.47 1.75 2.29 2.84 3.49 3.81 4.18 4.97 6.02 7.06 8.08 9.29

13.45

2.88 3.49 4.24 5.71 7.16 8.86 9.70 10.66 12.67 15.23 17.65 19.92 22.43 24.85 -

0.19 0.21 0.25 0.31 0.38 0.46 0.49 0.54 0.64 0.76 0.89 1.02 1.17 1.33 1.51

0.34 0.39 0.46 0.58 0.71 0.86 0.93 1.02 1.20 1.45 1.69 1.94 2.22 2.53 2.89

0.48 0.56 0.65 0.83 1.02 1.24 1.35 1.48 1.75 2.11 2.46 2.82 3.24 3.69 4.21

0.61 0.71 0.83 1.08 1.32 1.61 1.75 1.92 2.27 2.74 3.21 3.67 4.22 4.82 5.50

0.74 0.86 1.01 1.31 1.61 1.96 2.14 2.35 2.79 3.37 3.94 4.51 5.19 5.92 6.75

0.86 1.00 1.18 1.54 1.89 2.31 2.52 2.77 3.29 3.97 4.65 5.33 6.13 6.99 7.97

0.98 1.14 1.35 1.76 2.17 2.66 2.90 3.18 3.78 4.57 5.36 6.13 7.06 8.04 9.17

1.09 1.28 1.51 1.98 2.44 2.99 3.27 3.58 4.26 5.16 6.04 6.92 7.96 9.08

1.89 2.25 2.69 3.58 4.46 5.50 6.01 6.61 7.88 9.54

1.30 1.54 1.82 2.40 2.97 3.65 3.98 4.38 5.21 6.31 7.39 8.46 9.73

1.41 1.66 1.98 2.60 3.23 3.97 4.33 4.76 5.67 6.87 8.05 9.21

2.32 2.78 3.35 4.48 5.60 6.92 7.58 8.33 9.92

2.63 3.17 3.84 5.16 6.46 7.99 8.74 9.61

2.71 3.26 3.95 5.32 6.66 8.24 9.02 9.92 11.80

12.75

14.00

14.22

13.06

13.84

19.44

15.80

14.61

15.36

18.73

16.10

19.64

18.20

15.94

21.15

10.09

10.58

11.43

13.70

12.25

14.77

13.92

16.81

17.50

18.82

21.81

-

12.61

17.79

20.52

22.16

22.92

23.64

3.35 4.09 5.00 6.79 8.53 10.55 11.53 12.66 14.97 17.84 20.45 22.77

-

-

-

18.71

-

3.30 4.02 4.91 6.65 8.36 10.34 11.31 12.41 14.69 17.53 20.13 22.47

20.04

-

3.24 3.94 4.81 6.52 8.18 10.13 11.07 12.16 14.40 17.21 19.80 22.14 24.58

3.18 3.86 4.71 6.38 8.00 9.91 11.90

21.17 23.60

2.78 3.35 4.07 5.48 6.86 8.49 9.30 10.22 12.15 14.63 16.99 19.21 21.69 24.13 26.59

2.85 3.44 4.18 5.63 7.06 8.74 9.56 10.51 12.50 15.03 17.44 19.69 22.19 24.62

2.92 3.53 4.29 5.79 7.26 8.98 9.83 10.80 12.84 15.43 17.87 20.15 22.66 25.08

2.99 3.62 4.40 5.94 7.45 9.22 10.09 11.09 13.17 15.81 18.29 20.59 23.11 25.49

16.52

- -

3.11 3.78 4.61 6.23 7.82 9.68 10.59 11.63 13.80 16.53 19.08 21.41 23.91

-

-

-

-

-

-

-

-

-

-

-

-

-

-

24.32

-

-

-

-

-

-

-

-

3.41 4.16 5.09 6.92 8.69 10.75 11.75 12.90 15.24 18.14 20.75 23.05

3.46 4.23 5.18 7.05 8.86 10.95 11.97 13.13 15.50 18.42 21.03 23.31

3.52 4.30 5.27 7.17 9.01 11.15 12.18 13.35 15.75 18.69 21.30

3.57 4.37 5.36 7.29 9.17 11.34 12.38 13.57 15.99 18.94 21.54

3.61 4.43 5.44 7.41 9.32 11.52 12.58 13.78 16.23 19.18 21.76

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

- - - - - - -

- - - - - - -

- - - - - - -

- - - - - - -

-

-

-

-

-

3.66 4.50 5.52 7.53 9.47 11.70 12.77 13.98 16.45 19.41 21.96

3.71 4.56 5.60 7.64 9.61 12.95

3.75 4.61 5.68 7.75 9.75 12.04 13.13 14.37 16.86 19.82

- - - - - - - -

- - - - - - - -

- - - - - - - -

- - - - - - - - -

- - - - - - - - -

4.00 4.97 6.15 8.43 10.60 13.04 14.19 15.47 17.97

4.03 5.01 6.20 8.51 10.70 13.16 14.31 15.59 18.08

4.06 5.05 6.26 8.59 10.80 13.27 14.42 15.70 18.18

4.08 5.08 6.31 8.67 10.89 13.37 14.53 15.81 18.27

- - - - - - -

3.83 4.73 5.82 7.96 10.01 12.35 13.47 14.72 17.23 20.16

3.94 4.88 6.03 8.25 10.38 12.78 13.92 15.19 17.71

- - - - - - - - -

- - - - - - - - - -

- - - - - - - - - -

- - - - - - - - - -

- - - - - - - - - 5.12

4.13

4.15

4.16

6.40 11.06 14.72 - - - - - - - - - -

- - - - - - - - - -

- - - - - - - - - - -

- - - - - - - - - - -

- - - - - - - - - - -

4.18

4.19

- - - - - - - - - - -

4.21

- - - - - - - - - - -

4.22

4.22

4.22

4.22

5.35

4.21

11.61 14.09

- - - - - - - - - - -

4.22

- - - - - - - - - - -

- - - - - - - - - - -

- - - - - - - - - - -

- - - - - - - - - - - -

- - - - - - - - - - - -

Additional power rating for speed ratio (Pa)

Speed ratio

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.02 0.13 0.19 0.23

0.03 0.18 0.26 0.31

0.04 0.27 0.39 0.48

0.08 0.54 0.77 0.94

0.00 0.02 0.03 0.03

0.01 0.04 0.05 0.07

0.01 0.06 0.08 0.10

0.01 0.08 0.11 0.13

0.01 0.09 0.13 0.17

0.02 0.11 0.16 0.20

0.02 0.13 0.19 0.23

0.02 0.15 0.22 0.26

0.03 0.17 0.24 0.30

0.03 0.19 0.27 0.33

0.03 0.21 0.30 0.36

0.04 0.23 0.32 0.40

0.04 0.25 0.35 0.43

0.04 0.27 0.38 0.46

0.04 0.28 0.40 0.50

0.05 0.30 0.43 0.53

0.05 0.32 0.46 0.56

0.05 0.34 0.48 0.60

0.06 0.36 0.51 0.63

0.06 0.38 0.54 0.66

0.06 0.40 0.56 0.69

0.06 0.42 0.59 0.73

0.07 0.44 0.62 0.76

0.07 0.45 0.65 0.79

0.07 0.47 0.67 0.83

0.08 0.49 0.70 0.86

0.08 0.51 0.73 0.89

0.08 0.53 0.75 0.93

0.08 0.55 0.78 0.96

0.09 0.57 0.81 0.99

0.09 0.59 0.83 1.03

0.09 0.61 0.86 1.06

0.10 0.63 0.89 1.09

0.10 0.64 0.91 1.12

0.10 0.66 0.94 1.16

0.11 0.68 0.97 1.19

0.11 0.70 0.99 1.22

0.11 0.72 1.02 1.26

0.11 0.74 1.05 1.29

0.12 0.76 1.08 1.32

0.12 0.78 1.10 1.36

0.12 0.80 1.13 1.39

0.13 0.81 1.16 1.42

0.13 0.83 1.18 1.45

0.13 0.85 1.21 1.49

0.13 0.87 1.24 1.52

0.14 0.89 1.26 1.55

0.14 0.91 1.29 1.59

0.14 0.93 1.32 1.62

0.15 0.95 1.34 1.65

0.15 0.97 1.37 1.69

0.15 0.99 1.40 1.72

0.16 1.00 1.43 1.75

0.16 1.02 1.45 1.79

0.16 1.04 1.48 1.82

0.16 1.06 1.51 1.85

0.17 1.08 1.53 1.88

0.17 1.10 1.56 1.92

0.17 1.12 1.59 1.95

0.18 1.14 1.61 1.98

0.18 1.16 1.64 2.02

0.18 1.17 1.67 2.05

0.18 1.19 1.69 2.08

0.19 1.21 1.72 2.12

0.19 1.23 1.75 2.15

0.19 1.25 1.77 2.18

0.20 1.27 1.80 2.22

0.20 1.29 1.83 2.25

0.20 1.31 1.86 2.28

0.21 1.33 1.88 2.31

2

Design

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-34

5 Calculation of V-belt drives design

Power Rating Table

SPB-Section Power Rating

2

Design

Table 2-34

[kW] small pulley speed nd(rpm)

700

950

1450

2850

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

5100

5200

5300

5400

5500

Basic power rating for small pulley datum diameter : Ps

Small pulley datum diameter dd (mm)

Additional power rating for speed ratio (Pa)

Speed ratio

140 150 160 180 190 200 212 224 236 250 280 315 355 375 400

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

4.40 5.16 5.91 7.40 8.14 8.87 9.74 10.60 11.45 12.44 14.51 16.86 19.46 20.71 22.25

6.08 7.17 8.25 10.37 11.41 12.44 13.65 14.84 16.01 17.35 20.11 23.13 26.32 27.80 29.53

-

0.66 0.75 0.85 1.03 1.13 1.22 1.33 1.44 1.55 1.68 1.95 2.27 2.63 2.81 3.03

1.20 1.38 1.56 1.92 2.10 2.27 2.49 2.70 2.91 3.15 3.67 4.28 4.96 5.30 5.72

1.70 1.96 2.22 2.75 3.01 3.26 3.57 3.88 4.19 4.54 5.30 6.18 7.16 7.66 8.27

4.22 4.94 5.66 7.08 7.78 8.48 9.31 10.13 10.95 11.89 13.88 16.13 18.63 19.85 21.34

4.58 5.38 6.17 7.72 8.49 9.25 10.16 11.06 11.95 12.97 15.13 17.57 20.25 21.55 23.13

4.94 5.80 6.66 8.35 9.18 10.01 10.99 11.96 12.92 14.02 16.33 18.94 21.78 23.15 24.80

5.28 6.21 7.13 8.95 9.85 10.73 11.78 12.82 13.85 15.02 17.48 20.23 23.21 24.63 26.34

5.61 6.61 7.59 9.54 10.49 11.43 12.55 13.65 14.74 15.99 18.58 21.45 24.54 25.99 27.73

5.93 6.99 8.04 10.10 11.11 12.11 13.29 14.45 15.60 16.90 19.61 22.59 25.76 27.23 28.97

6.23 7.36 8.47 10.64 11.71 12.76 14.00 15.22 16.41 17.78 20.58 23.65 26.86 28.33 30.04

6.53 7.71 8.88 11.16 12.28 13.38 14.68 15.94 17.19 18.60 21.49 24.62 27.83 29.29 30.95

6.81 8.05 9.27 11.66 12.83 13.97 15.32 16.64 17.92 19.38 22.34 25.50 28.69 30.10 31.68

7.08 8.38 9.65 12.14 13.35 14.54 15.93 17.29 18.61 20.10 23.11 26.28 29.40 30.75 32.22

7.33 8.69 10.01 12.60 13.85 15.07 16.51 17.90 19.25 20.77 23.81 26.96 29.98 31.24 32.56

- - -

-

-

-

-

-

-

-

-

- - - - - - - - - - - - - - -

0.05 0.33 0.46 0.57

0.07 0.44 0.63 0.77

0.10 0.67 0.96 1.18

0.20 1.32 1.88 2.31

0.01 0.05 0.07 0.08

0.01 0.09 0.13 0.16

0.02 0.14 0.20 0.24

0.03 0.19 0.26 0.32

0.04 0.23 0.33 0.41

0.04 0.28 0.40 0.49

0.05 0.33 0.46 0.57

0.06 0.37 0.53 0.65

0.06 0.42 0.59 0.73

0.07 0.46 0.66 0.81

0.08 0.51 0.73 0.89

0.09 0.56 0.79 0.97

0.09 0.60 0.86 1.05

0.10 0.65 0.92 1.13

0.11 0.70 0.99 1.22

0.11 0.74 1.05 1.30

0.12 0.79 1.12 1.38

0.13 0.84 1.19 1.46

0.14 0.88 1.25 1.54

0.14 0.93 1.32 1.62

0.15 0.98 1.38 1.70

0.16 1.02 1.45 1.78

0.17 1.07 1.52 1.86

0.17 1.11 1.58 1.95

0.18 1.16 1.65 2.03

0.19 1.21 1.71 2.11

0.19 1.25 1.78 2.19

0.20 1.30 1.85 2.27

0.21 1.35 1.91 2.35

0.22 1.39 1.98 2.43

0.22 1.44 2.04 2.51

0.23 1.49 2.11 2.59

0.24 1.53 2.18 2.68

0.24 1.58 2.24 2.76

0.25 1.63 2.31 2.84

0.26 1.67 2.37 2.92

0.27 1.72 2.44 3.00

0.27 1.76 2.50 3.08

0.28 1.81 2.57 3.16

0.29 1.86 2.64 3.24

0.29 1.90 2.70 3.32

0.30 1.95 2.77 3.40

0.31 2.00 2.83 3.49

0.32 2.04 2.90 3.57

0.32 2.09 2.97 3.65

0.33 2.14 3.03 3.73

0.34 2.18 3.10 3.81

0.34 2.23 3.16 3.89

0.35 2.28 3.23 3.97

0.36 2.32 3.30 4.05

0.37 2.37 3.36 4.13

0.37 2.41 3.43 4.22

0.38 2.46 3.49 4.30

0.39 2.51 3.56 4.38

0.40 2.55 3.63 4.46

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-35

Calculation of V-belt drives design

Power Rating Table

5

SPBX(5VX)-Section Power Rating

Table 2-35

[kW] small pulley speed nd(rpm)

700

950

1450

2850

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

5100

5200

5300

5400

5500

5600

5700

5800

5900

6000

Basic power rating for small pulley datum diameter : Ps

Small pulley datum diameter dd (mm)

Additional power rating for speed ratio (Pa)

Speed ratio

112 118 125 132 140 150 160 180 200 224 250 280 315 355 400

5.53 6.30 7.20 8.10 9.12 10.39 11.65 14.15 16.61 19.52 22.60 26.06 29.97 34.25 38.79

9.74 11.15 12.78 14.38 16.20 18.42 20.60 24.81 28.80 33.28 37.70 - - - -

0.48 0.54 0.61 0.67 0.75 0.85 0.95 1.14 1.34 1.57 1.82 2.11 2.45 2.83 3.26

0.91 1.02 1.16 1.29 1.45 1.64 1.83 2.21 2.59 3.05 3.54 4.11 4.76 5.51 6.35

1.32 1.49 1.69 1.89 2.12 2.40 2.69 3.25 3.82 4.49 5.22 6.05 7.02 8.12 9.35

1.72 1.95 2.21 2.47 2.78 3.15 3.53 4.27 5.01 5.90 6.86 7.96 9.23

2.11 2.39 2.72 3.05 3.42 3.89 4.35 5.27 6.19 7.29 8.48 9.84

3.97 4.51 5.15 5.78 6.51 7.41 8.31 10.09 11.85 13.95 16.20 18.76 21.70 24.99 28.59

4.32 4.92 5.62 6.31 7.10 8.09 9.07 11.01 12.94 15.23 17.67 20.45 23.63 27.17 31.03

4.67 5.32 6.08 6.83 7.69 8.76 9.82 11.93 14.01 16.48 19.12 22.10 25.51 29.29 33.38

5.02 5.72 6.53 7.34 8.27 9.42 10.56 12.83 15.06 17.71 20.53 23.72 27.34 31.33 35.62

5.36 6.11 6.98 7.85 8.84 10.07 11.29 13.71 16.10 18.92 21.92 25.29 29.11 33.30 37.76

5.69 6.49 7.42 8.35 9.40 10.71 12.01 14.59 17.12 20.11 23.27 26.82 30.82 35.18 39.79

-

-

-

-

-

-

- -

- - -

8.78 10.05 11.51 12.96 14.60 16.62 18.60 22.47 26.20 30.44 34.76 39.32 -

-

-

9.06 10.37 11.88 13.38 15.07 17.15 19.19 23.17 26.97 31.30 35.66 40.23

-

-

-

-

-

-

- -

- -

-

-

-

-

- - - - -

10.38 11.89 13.62 15.33 17.26 19.61 21.91 26.31 30.44 35.00

10.62 12.17 13.95 15.70 17.66 20.07 22.41 26.88 31.05 35.62

- - - - - - - -

10.86 12.44 14.26 16.05 18.06 20.51 22.89 27.42 31.62 36.19

-

-

-

-

-

-

-

-

-

-

-

-

-

- - - - - - - - -

11.95 13.70 15.70 17.66 19.84 22.48 25.01 29.73 33.97

12.70 14.56 16.68 18.75 21.03 23.76 26.36 31.10

12.87 14.75 16.90 18.99 21.29 24.04 26.64

- - - - - - - - - -

13.58

- - - - - - - - - - -

- - - - - - - - - - -

- - - - - - - - - - -

14.22

- - - - - - - - - - - - - -

- - - - - - - - - - - - - -

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.04 0.29 0.41 0.50

0.06 0.39 0.55 0.68

0.09 0.59 0.84 1.04

0.18 1.17 1.65 2.04

0.01 0.04 0.06 0.07

0.01 0.08 0.12 0.14

0.02 0.12 0.17 0.21

0.03 0.16 0.23 0.29

0.03 0.20 0.29 0.36

0.04 0.25 0.35 0.43

0.04 0.29 0.41 0.50

0.05 0.33 0.46 0.57

0.06 0.37 0.52 0.64

0.06 0.41 0.58 0.71

0.07 0.45 0.64 0.79

0.08 0.49 0.70 0.86

0.08 0.53 0.75 0.93

0.09 0.57 0.81 1.00

0.09 0.61 0.87 1.07

0.10 0.65 0.93 1.14

0.11 0.70 0.99 1.21

0.11 0.74 1.05 1.29

0.12 0.78 1.10 1.36

0.13 0.82 1.16 1.43

0.13 0.86 1.22 1.50

0.14 0.90 1.28 1.57

0.15 0.94 1.34 1.64

0.15 0.98 1.39 1.71

0.16 1.02 1.45 1.79

0.16 1.06 1.51 1.86

0.17 1.10 1.57 1.93

0.18 1.15 1.63 2.00

0.18 1.19 1.68 2.07

0.19 1.23 1.74 2.14

0.20 1.27 1.80 2.21

0.20 1.31 1.86 2.28

0.21 1.35 1.92 2.36

0.22 1.39 1.97 2.43

0.22 1.43 2.03 2.50

0.23 1.47 2.09 2.57

0.23 1.51 2.15 2.64

0.24 1.55 2.21 2.71

0.25 1.60 2.26 2.78

0.25 1.64 2.32 2.86

0.26 1.68 2.38 2.93

0.27 1.72 2.44 3.00

0.27 1.76 2.50 3.07

0.28 1.80 2.55 3.14

0.28 1.84 2.61 3.21

0.29 1.88 2.67 3.28

0.30 1.92 2.73 3.36

0.30 1.96 2.79 3.43

0.31 2.00 2.85 3.50

0.32 2.05 2.90 3.57

0.32 2.09 2.96 3.64

0.33 2.13 3.02 3.71

0.34 2.17 3.08 3.78

0.34 2.21 3.14 3.86

0.35 2.25 3.19 3.93

0.35 2.29 3.25 4.00

0.36 2.33 3.31 4.07

0.37 2.37 3.37 4.14

0.37 2.41 3.43 4.21

0.38 2.45 3.48 4.28

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2

Design

2-36

5 Calculation of V-belt drives design

Power Rating Table

SPC-Section Power Rating

2

Design

Table 2-36

[kW] small pulley speed nd(rpm)

700

950

1450

2850

50

100

150

200

250

300

350

400

450

500

550

600

650

700

750

800

850

900

950

1000

1050

1100

1150

1200

1250

1300

1350

1400

1450

1500

1550

1600

1650

1700

1750

1800

1850

1900

1950

2000

2050

2100

2150

2200

2250

2300

2350

2400

2450

2500

2550

2600

2650

2700

2750

2800

2850

2900

2950

3000

3050

3100

3150

3200

3250

3300

3350

3400

3450

3500

Basic power rating for small pulley datum diameter : Ps

Small pulley datum diameter dd (mm)

Additional power rating for speed ratio (Pa)

Speed ratio

224 250 280 300 315 335 355 375 400 450 500 560 630 710

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

17.83 22.52 27.67 30.95 33.32 36.37 39.27 42.03 45.25 50.91 55.44

14.21

1.99 2.43 2.94 3.28 3.53 3.86 4.19 4.53 4.94 5.76 6.57 7.54 8.67 9.94

2.84 3.48 4.23 4.72 5.08 5.57 6.06 6.54 7.14 8.34 9.53

10.47 13.12 16.14 18.12 19.59 21.53 23.45 25.34 27.68 32.24 36.64 41.69 47.26 53.16

13.29 16.73 20.60 23.12 24.99 27.44 29.84 32.19 35.06 40.55 45.69 51.36 57.23 62.84

1.08 1.31 1.57 1.75 1.88 2.06 2.23 2.40 2.62 3.05 3.47 3.98 4.57 5.24

25.53

12.37

13.24

- - -

- - - - - - - - - - - -

15.75 19.87 24.46 27.43 29.60 32.43 35.16 37.81 40.99 46.90 52.13 57.46 62.23

16.20 20.44 25.16 28.20 30.42 33.30 36.09 38.78 41.99 47.90 53.06 58.19

14.32 18.04 22.22 24.93 26.93 29.55 32.10 34.59 37.62 43.34 48.61 54.27 59.88 64.85

14.81 18.67 22.99 25.80 27.86 30.55 33.17 35.72 38.81 44.62 49.90 55.50 60.89

15.29 19.28 23.74 26.63 28.75 31.51 34.19 36.79 39.93 45.80 51.08 56.56 61.68

-

-

-

-

-

-

11.64 14.62 17.99 20.20 21.84 23.99 26.12 28.22 30.79 35.78 40.54 45.94 51.78 57.77

12.21 15.34 18.88 21.20 22.92 25.18 27.40 29.59 32.27 37.44 42.36 47.88 53.78 59.72

12.76 16.04 19.75 22.18 23.97 26.32 28.64 30.91 33.69 39.03 44.07 49.69 55.60 61.42

13.29 16.73 20.60 23.12 24.99 27.44 29.84 32.19 35.06 40.55 45.69 51.36 57.23 62.84

13.81 17.39 21.42 24.04 25.98 28.51 30.99 33.42 36.37 41.99 47.21 52.89 58.66 63.99

5.16 6.40 7.81 8.74 9.44 10.36 11.28 12.20 13.34 15.59 17.82 20.45 23.48 26.89

5.89 7.31 8.93 10.01 10.81 11.88 12.93 13.99 15.29 17.88 20.43 23.44 26.89 30.75

6.59 8.20 10.04 11.25 12.15 13.35 14.55 15.73 17.20 20.10 22.96 26.34 30.18 34.47

7.28 9.07 11.11 12.46 13.46 14.80 16.12 17.43 19.06 22.28 25.43 29.14 33.36 38.03

7.95 9.92 12.16 13.64 14.75 16.21 17.66 19.10 20.88 24.39 27.83 31.85 36.41 41.43

8.60 10.75 13.19 14.80 16.00 17.59 19.16 20.72 22.65 26.44 30.15 34.47 39.33 44.65

9.24 11.56 14.19 15.93 17.22 18.93 20.63 22.30 24.37 28.44 32.39 36.98 42.12 47.68

9.86 12.35 15.18 17.04 18.42 20.25 22.05 23.84 26.05 30.37 34.55 39.39 44.77 50.53

10.47 13.12 16.14 18.12 19.59 21.53 23.45 25.34 27.68 32.24 36.64 41.69 47.26 53.16

11.06 13.88 17.07 19.17 20.73 22.78 24.80 26.80 29.26 34.04 38.63 43.88 49.60 55.58

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

16.63 20.99 25.83 28.94 31.20 34.14 36.96 39.68 42.91 48.80 53.86 58.74

17.05 21.52 26.47 29.64 31.95 34.93 37.79 40.52 43.77 49.61 54.53 59.10

17.45 22.03 27.09 30.31 32.66 35.67 38.56 41.31 44.54 50.31 55.06

17.83 22.52 27.67 30.95 33.32 36.37 39.27 42.03 45.25 50.91 55.44

18.20 22.98 28.23 31.55 33.95 37.02 39.93 42.68 45.87 51.40 55.68

- - - - -

20.29 25.59 31.24 34.70 37.13 40.14 42.86 45.29 47.88

20.51 25.87 31.54 34.99 37.40 40.36 43.02 45.36 47.81

20.72 26.11 31.80 35.24 37.62 40.53 43.11 45.34

21.07 26.53 32.21 35.59 37.91 40.68 43.07

21.21 26.70 32.36 35.70 37.97 40.66 42.94

21.33 26.84 32.47 35.77 37.98 40.58 42.74

- -

- - - - -

19.78 24.97 30.54 34.00 36.45 39.52 42.34 44.91 47.75

20.04 25.29 30.91 34.37 36.82 39.86 42.63 45.14 47.87

- - - - - - - -

- - - - - - - -

20.90 26.34 32.02 35.44 37.79 40.63 43.13 45.25

18.89 23.85 29.25 32.65 35.08 38.17 41.08 43.79 46.88 52.04

19.20 24.24 29.71 33.14 35.58 38.68 41.56 44.23 47.26 52.18

-

- -

- - - - - - - -

- - - - - - - -

- - - - - - - - -

- - - - - - - - -

- - - - - - - - -

- - - - - - - - -

27.03

21.58

21.62

21.63

21.62

21.59

32.56

40.43

37.68

- - - - - - - - - -

- - - - - - - - - -

- - - - - - - - - -

31.88

- - - - - - - - - - - -

- - - - - - - - - - - - -

- - - - - - - - - - - - -

26.87

21.45

21.35

21.22

21.07

20.68

- - - - - - - - - - - - -

24.80

19.90

19.24

18.87

18.47

25.84

- - - - - - - - - - - - -

- - - - - - - - - - - - -

- - - - - - - - - - - - -

19.58 - - - - - - - - - - - - -

- - - - - - - - - - - - -

- - - - - - - - - - - - - -

- - - - - - - - - - - - - -

17.58

17.10

16.58

- - - - - - - - - - - - - -

- - - - - - - - - - - - - -

- - - - - - - - - - - - - -

- - - - - - - - - - - - - -

- - - - - - - - - - - - - -

0.14 0.90 1.27 1.57

0.19 1.22 1.73 2.13

0.29 1.86 2.64 3.25

0.57 3.66 5.19 6.38

0.01 0.06 0.09 0.11

0.02 0.13 0.18 0.22

0.03 0.19 0.27 0.34

0.04 0.26 0.36 0.45

0.05 0.32 0.46 0.56

0.06 0.38 0.55 0.67

0.07 0.45 0.64 0.78

0.08 0.51 0.73 0.90

0.09 0.58 0.82 1.01

0.10 0.64 0.91 1.12

0.11 0.71 1.00 1.23

0.12 0.77 1.09 1.34

0.13 0.83 1.18 1.46

0.14 0.90 1.27 1.57

0.15 0.96 1.37 1.68

0.16 1.03 1.46 1.79

0.17 1.09 1.55 1.90

0.18 1.15 1.64 2.02

0.19 1.22 1.73 2.13

0.20 1.28 1.82 2.24

0.21 1.35 1.91 2.35

0.22 1.41 2.00 2.46

0.23 1.48 2.09 2.58

0.24 1.54 2.19 2.69

0.25 1.60 2.28 2.80

0.26 1.67 2.37 2.91

0.27 1.73 2.46 3.02

0.28 1.80 2.55 3.13

0.29 1.86 2.64 3.25

0.30 1.92 2.73 3.36

0.31 1.99 2.82 3.47

0.32 2.05 2.91 3.58

0.33 2.12 3.00 3.69

0.34 2.18 3.10 3.81

0.35 2.25 3.19 3.92

0.36 2.31 3.28 4.03

0.37 2.37 3.37 4.14

0.38 2.44 3.46 4.25

0.39 2.50 3.55 4.37

0.40 2.57 3.64 4.48

0.41 2.63 3.73 4.59

0.42 2.69 3.82 4.70

0.43 2.76 3.92 4.81

0.44 2.82 4.01 4.93

0.45 2.89 4.10 5.04

0.46 2.95 4.19 5.15

0.47 3.01 4.28 5.26

0.48 3.08 4.37 5.37

0.49 3.14 4.46 5.49

0.50 3.21 4.55 5.60

0.51 3.27 4.64 5.71

0.52 3.34 4.73 5.82

0.53 3.40 4.83 5.93

0.54 3.46 4.92 6.05

0.55 3.53 5.01 6.16

0.56 3.59 5.10 6.27

0.57 3.66 5.19 6.38

0.58 3.72 5.28 6.49

0.59 3.78 5.37 6.61

0.60 3.85 5.46 6.72

0.61 3.91 5.55 6.83

0.62 3.98 5.64 6.94

0.63 4.04 5.74 7.05

0.63 4.11 5.83 7.17

0.64 4.17 5.92 7.28

0.65 4.23 6.01 7.39

0.66 4.30 6.10 7.50

0.67 4.36 6.19 7.61

0.68 4.43 6.28 7.73

0.69 4.49 6.37 7.84

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-37

Calculation of V-belt drives design

Power Rating Table

5

SPCX-Section Power Rating

1800

1850

1900

1950

2000

2050

2100

2150

2200

2250

1300

1350

1400

1450

1500

1550

1600

1650

1700

1750

2300

2350

2400

2450

2500

3050

3100

3150

3200

3250

3300

3350

3400

3450

3500

2550

2600

2650

2700

2750

2800

2850

2900

2950

3000

Table 2-37

[kW] small pulley speed nd(rpm)

700

950

1450

2850

50

100

150

200

250

300

350

400

450

500

550

600

650

700

750

800

850

900

950

1000

1050

1100

1150

1200

1250

Basic power rating for small pulley datum diameter : Ps

Small pulley datum diameter dd (mm)

Additional power rating for speed ratio (Pa)

Speed ratio

180 200 224 250 280 315 335 355 400 450 500 560 630 710

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

9.39 11.26 13.50 15.91 18.68 21.87 23.67 25.47 29.46 33.82 38.08 43.06 48.66 54.76

12.54 15.04 18.02 21.21 24.85 29.02 31.37 33.69 38.80 44.29 49.56 55.55 62.04

18.51 22.17 26.47 31.03 36.13 41.86 45.01 48.07 54.59 61.17 66.97

0.73 0.87 1.04 1.23 1.44 1.68 1.83 1.97 2.28 2.63 2.98 3.40 3.89 4.44

1.43 1.71 2.05 2.41 2.83 3.32 3.60 3.87 4.50 5.19 5.88 6.71 7.67 8.77

2.12 2.54 3.04 3.58 4.21 4.93 5.35 5.76 6.69 7.72 8.74 9.97

11.58

11.40

13.20

14.38

15.09

16.39

4.15 4.98 5.97 7.03 8.26 9.69 10.50 11.32 13.14 15.15 17.16 19.55 22.32 25.45

4.82 5.78 6.93 8.17 9.60 11.25 12.20 13.14 15.25 17.59 19.91 22.67 25.86 29.46

5.48 6.58 7.88 9.30 10.92 12.81 13.88 14.95 17.35 19.99 22.62 25.74 29.34 33.39

6.14 7.37 8.84 10.42 12.24 14.35 15.55 16.75 19.42 22.38 25.30 28.77 32.75 37.22

6.80 8.16 9.78 11.53 13.54 15.88 17.20 18.53 21.48 24.73 27.94 31.74 36.10 40.96

7.45 8.94 10.72 12.64 14.84 17.39 18.84 20.29 23.51 27.05 30.54 34.67 39.37 44.59

8.10 9.72 11.65 13.74 16.13 18.90 20.47 22.03 25.52 29.34 33.10 37.53 42.56 48.11

8.74 10.49 12.58 14.83 17.41 20.39 22.08 23.76 27.51 31.60 35.62 40.33 45.66 51.50

9.39 11.26 13.50 15.91 18.68 21.87 23.67 25.47 29.46 33.82 38.08 43.06 48.66 54.76

10.02 12.03 14.42 16.99 19.93 23.33 25.25 27.16 31.39 36.00 40.49 45.72 51.57 57.88

10.66 12.79 15.33 18.06 21.18 24.78 26.81 28.83 33.29 38.14 42.85 48.30 54.36 60.84

11.29 13.54 16.23 19.12 22.41 26.21 28.35 30.47 35.16 40.24 45.15 50.81 57.04 63.64

11.91 14.29 17.13 20.17 23.64 27.62 29.87 32.09 37.00 42.29 47.39 53.22 59.60 66.27

12.54 15.04 18.02 21.21 24.85 29.02 31.37 33.69 38.80 44.29 49.56 55.55 62.04 68.71

13.15 15.78 18.90 22.24 26.04 30.40 32.85 35.26 40.57 46.24 51.66 57.78 64.33 70.97

14.98 17.96 21.50 25.27 29.55 34.42 37.14 39.81 45.64 51.78 57.53 63.85 70.36

15.58 18.68 22.35 26.26 30.69 35.72 38.52 41.27 47.25 53.51 59.33 65.66 72.05

50.07

-

-

-

-

-

-

-

-

-

-

13.77 16.51 19.77 23.26 27.23 31.76 34.30 36.81 42.30 48.15 53.69 59.91 66.49 73.02

14.38 17.24 20.64 24.27 28.39 33.10 35.73 38.32 43.99 49.99 55.65 61.94 68.50

-

-

-

-

-

-

0.08 0.49 0.70 0.86

0.10 0.67 0.95 1.16

0.16 1.02 1.44 1.77

0.01 0.04 0.05 0.06

0.01 0.07 0.10 0.12

0.02 0.11 0.15 0.18

0.02 0.14 0.20 0.24

0.03 0.18 0.25 0.31

0.03 0.21 0.30 0.37

0.04 0.25 0.35 0.43

0.04 0.28 0.40 0.49

0.05 0.32 0.45 0.55

0.05 0.35 0.50 0.61

0.06 0.39 0.55 0.67

0.07 0.42 0.60 0.73

0.07 0.46 0.65 0.80

0.08 0.49 0.70 0.86

0.08 0.53 0.75 0.92

0.09 0.56 0.80 0.98

0.09 0.60 0.85 1.04

0.10 0.63 0.90 1.10

0.10 0.67 0.95 1.16

0.11 0.70 0.99 1.22

0.11 0.74 1.04 1.28

0.12 0.77 1.09 1.35

0.12 0.81 1.14 1.41

0.13 0.84 1.19 1.47

0.14 0.88 1.24 1.53

16.77 20.09 24.03 28.21 32.92 38.25 41.20 44.09 50.33 56.77 62.66 68.91

17.35 20.79 24.85 29.16 34.01 39.48 42.50 45.46 51.80 58.31 64.20 70.34

18.51 22.17 26.47 31.03 36.13 41.86 45.01 48.07 54.59 61.17 66.97

-

17.94 21.48 25.67 30.10 35.08 40.68 43.77 46.78 53.22 59.77 65.63

19.08 22.84 27.27 31.94 37.17 43.01 46.22 49.33 55.90 62.48 68.21

-

-

-

-

-

-

-

-

-

19.65 23.51 28.05 32.84 38.19 44.14 47.40 50.54 57.17 63.73

20.21 24.17 28.83 33.73 39.18 45.24 48.54 51.72 58.37 64.89

-

-

-

-

-

-

20.76 24.83 29.59 34.60 40.16 46.31 49.65 52.86 59.52 65.97

21.31 25.47 30.35 35.46 41.11 47.35 50.73 53.95 60.61

- - - - -

-

-

- - - - -

- - - - -

21.85 26.11 31.09 36.30 42.05 48.36 51.76 55.00 61.64

-

-

-

-

-

- - - - -

22.91 27.36 32.54 37.93 43.85 50.29 53.72 56.97 63.51

23.43 27.97 33.25 38.73 44.72 51.20 54.65 57.88 64.34

23.95 28.57 33.94 39.50 45.56 52.09 55.53 58.75

- - - - - - - -

- - - - - - - -

24.46 29.17 34.62 40.26 46.38 52.93 56.37 59.57

- - - - - - - -

25.46 30.33 35.95 41.72 47.94 54.52 57.93 61.05

25.94 30.89 36.59 42.42 48.68 55.26 58.64 61.72

26.42 31.45 37.22 43.11 49.39 55.96 59.30

- - - - - - - - -

- - - - - - - - -

26.90 31.99 37.83 43.77 50.08 56.62 59.92

- - - - - - - - -

- - - - - - - - -

- - - - - - - - - -

28.71

- - - - - - - - - -

- - - - - - - - - -

- - - - - - - - - - - -

- - - - - - - - - - - -

30.79

- - - - - - - - - - - -

- - - - - - - - - - - -

- - - - - - - - - - - -

- - - - - - - - - - - - -

32.64

- - - - - - - - - - - - -

- - - - - - - - - - - - -

- - - - - - - - - - - - -

- - - - - - - - - - - - -

34.25

- - - - - - - - - - - - - -

- - - - - - - - - - - - - -

- - - - - - - - - - - - - -

- - - - - - - - - - - - - -

35.60

- - - - - - - - - - - - - -

0.14 0.91 1.29 1.59

0.15 0.95 1.34 1.65

0.15 0.98 1.39 1.71

0.16 1.02 1.44 1.77

0.16 1.05 1.49 1.84

0.17 1.09 1.54 1.90

0.17 1.12 1.59 1.96

0.18 1.16 1.64 2.02

0.18 1.19 1.69 2.08

0.19 1.23 1.74 2.14

0.20 1.26 1.79 2.20

0.20 1.30 1.84 2.26

0.21 1.33 1.89 2.32

0.21 1.37 1.94 2.39

0.22 1.40 1.99 2.45

0.22 1.44 2.04 2.51

0.23 1.47 2.09 2.57

0.23 1.51 2.14 2.63

0.24 1.54 2.19 2.69

0.24 1.58 2.24 2.75

0.25 1.61 2.29 2.81

0.25 1.65 2.34 2.87

0.26 1.68 2.39 2.94

0.27 1.72 2.44 3.00

0.27 1.75 2.49 3.06

0.28 1.79 2.54 3.12

0.28 1.82 2.59 3.18

0.29 1.86 2.64 3.24

0.29 1.89 2.69 3.30

0.30 1.93 2.74 3.36

0.30 1.96 2.79 3.43

0.31 2.00 2.84 3.49

0.31 2.03 2.89 3.55

0.32 2.07 2.93 3.61

0.33 2.10 2.98 3.67

0.33 2.14 3.03 3.73

0.34 2.17 3.08 3.79

0.34 2.21 3.13 3.85

0.35 2.24 3.18 3.91

0.35 2.28 3.23 3.98

0.36 2.31 3.28 4.04

0.36 2.35 3.33 4.10

0.37 2.38 3.38 4.16

0.37 2.42 3.43 4.22

0.38 2.45 3.48 4.28

2

Design

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-38

5 Calculation of V-belt drives design

Power Rating Table

3V-Section Power Rating

2

Design

Table 2-38

[kW] small pulley speed nd(rpm)

700

950

1450

2850

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

5100

5200

5300

5400

5500

5600

5800

6000

6200

6400

6600

6800

7000

7200

7400

7600

7800

8000

8200

8400

Basic power rating for small pulley effective diameter : Ps

Small pulley effective diameter de (mm)

Additional power rating for speed ratio (Pa)

Speed ratio

63 71 80 85 90 95 100 112 125 132 140 150 160 180 200

0.52 0.71 0.92 1.04 1.15 1.27 1.39 1.66 1.96 2.12 2.30 2.52 2.74 3.18 3.62

0.65 0.91 1.19 1.35 1.50 1.65 1.81 2.17 2.56 2.77 3.01 3.30 3.59 4.17 4.74

0.90 1.28 1.69 1.92 2.15 2.37 2.59 3.13 3.69 4.00 4.34 4.76 5.18 6.00 6.80

11.11

0.10 0.13 0.17 0.19 0.21 0.23 0.25 0.29 0.34 0.37 0.39 0.43 0.47 0.54 0.61

0.19 0.24 0.31 0.35 0.38 0.42 0.46 0.54 0.64 0.69 0.74 0.81 0.88 1.02 1.16

0.26 0.35 0.44 0.50 0.55 0.60 0.66 0.78 0.92 0.99 1.07 1.18 1.28 1.48 1.68

0.33 0.44 0.57 0.64 0.71 0.78 0.85 1.01 1.19 1.28 1.39 1.53 1.66 1.92 2.19

0.39 0.53 0.69 0.78 0.86 0.95 1.03 1.23 1.45 1.57 1.70 1.86 2.03 2.35 2.67

0.46 0.62 0.81 0.91 1.01 1.11 1.21 1.45 1.71 1.84 2.00 2.20 2.39 2.77 3.15

0.52 0.71 0.92 1.04 1.15 1.27 1.39 1.66 1.96 2.12 2.30 2.52 2.74 3.18 3.62

0.57 0.79 1.03 1.16 1.29 1.43 1.56 1.87 2.20 2.38 2.59 2.84 3.09 3.58 4.07

0.63 0.87 1.14 1.28 1.43 1.58 1.72 2.07 2.44 2.64 2.87 3.15 3.43 3.98 4.52

0.68 0.95 1.24 1.41 1.57 1.73 1.89 2.27 2.68 2.90 3.15 3.45 3.76 4.36 4.96

0.73 1.02 1.35 1.52 1.70 1.88 2.05 2.47 2.91 3.15 3.42 3.75 4.09 4.74 5.38

0.78 1.10 1.45 1.64 1.83 2.02 2.21 2.66 3.14 3.40 3.69 4.05 4.41 5.11 5.80

0.83 1.17 1.55 1.75 1.96 2.16 2.37 2.85 3.36 3.64 3.95 4.34 4.72 5.47 6.21

0.88 1.24 1.64 1.86 2.08 2.30 2.52 3.03 3.59 3.88 4.21 4.62 5.03 5.83 6.61

0.93 1.31 1.74 1.97 2.21 2.44 2.67 3.22 3.80 4.11 4.47 4.90 5.33 6.17 7.00

0.97 1.38 1.83 2.08 2.33 2.57 2.82 3.40 4.02 4.34 4.72 5.17 5.63 6.51 7.37

1.02 1.45 1.92 2.19 2.45 2.71 2.96 3.57 4.22 4.57 4.96 5.44 5.92 6.84 7.74

1.06 1.51 2.01 2.29 2.56 2.84 3.11 3.75 4.43 4.79 5.20 5.70 6.20 7.17 8.10

1.10 1.58 2.10 2.39 2.68 2.97 3.25 3.92 4.63 5.01 5.44 5.96 6.48 7.48 8.44

1.14 1.64 2.19 2.49 2.79 3.09 3.39 4.09 4.83 5.22 5.67 6.21 6.75 7.79 8.78

1.18 1.70 2.28 2.59 2.91 3.22 3.52 4.25 5.03 5.43 5.89 6.46 7.01 8.08 9.10

1.22 1.76 2.36 2.69 3.02 3.34 3.66 4.42 5.22 5.64 6.11 6.70 7.27 8.37 9.41

1.26 1.82 2.44 2.78 3.12 3.46 3.79 4.57 5.40 5.84 6.33 6.93 7.52 8.65 9.71

1.29 1.88 2.52 2.88 3.23 3.58 3.92 4.73 5.59 6.04 6.54 7.16 7.76 8.91 9.99

10.27

1.40 2.04 2.76 3.15 3.54 3.92 4.29 5.18 6.11 6.60 7.14 7.81 8.45 9.66

1.36 1.99 2.68 3.06 3.44 3.81 4.17 5.03 5.94 6.42 6.95 7.60 8.22 9.42

10.77

1.43 2.10 2.83 3.24 3.63 4.03 4.41 5.33 6.28 6.78 7.33 8.01 8.66 9.88

1.46 2.15 2.91 3.32 3.73 4.13 4.53 5.47 6.44 6.95 7.52 8.20 8.86

1.64 2.44 3.32 3.80 4.27 4.73 5.18 6.24 7.32 7.88 8.50 9.22 9.91

1.66 2.48 3.38 3.87 4.35 4.82 5.28 6.36 7.46 8.02 8.64 9.37

10.30

1.52 2.25 3.05 3.49 3.92 4.34 4.76 5.74 6.75 7.28 7.87 8.57 9.25

1.55 2.30 3.12 3.57 4.01 4.44 4.87 5.87 6.90 7.44 8.03 8.75 9.43

1.58 2.35 3.19 3.65 4.10 4.54 4.98 6.00 7.05 7.59 8.19 8.91 9.60

-

-

11.60

11.77

11.00

-

11.92

12.06

-

1.73 2.61 3.56 4.08 4.58 5.08 5.57 6.68 7.82 8.39 9.02 9.75

1.75 2.65 3.62 4.14 4.66 5.16 5.65 6.79 7.93 8.51 9.13 9.86

-

-

-

-

11.58

10.62

-

-

-

10.05

10.19

-

-

-

-

-

12.42

-

-

-

-

11.72

-

-

-

-

-

-

-

-

-

1.85 2.82 3.88 4.44 4.99 5.53 6.05 7.23 8.40 8.98 9.59

10.44

1.92 2.97 4.09 4.69 5.27 5.83 6.37 7.58 8.73 9.28 9.85

-

-

-

-

10.06

1.81 2.76 3.78 4.33 4.87 5.39 5.90 7.07 8.23 8.81 9.43

1.83 2.79 3.83 4.39 4.93 5.46 5.98 7.15 8.32 8.90 9.51

-

-

-

-

1.93 2.99 4.13 4.73 5.32 5.88 6.42 7.63 8.78 9.32 9.88

- - - - - - - -

1.95 3.04 4.20 4.81 5.41 5.98 6.52 7.73 8.86 9.38 9.90

-

-

10.92

10.38

1.89 2.91 4.01 4.60 5.17 5.72 6.25 7.45 8.62 9.18 9.77

10.34

- - - - - - -

- - - - - - - -

1.96 3.06 4.23 4.85 5.45 6.02 6.57 7.77 8.88 9.40 9.90

1.97 3.08 4.26 4.88 5.48 6.06 6.61 7.81 8.91 9.41

10.83

- -

-

-

-

-

-

-

-

-

-

-

-

-

-

- - - - - - - -

- - - - - - - - -

- - - - - - - - -

1.99 3.17 4.41 5.06 5.67 6.25 6.79 7.92

1.98 3.19 4.44 5.09 5.70 6.27 6.80 7.90

1.97 3.19 4.46 5.11 5.71 6.28 6.80 7.86

- - - - - - - - -

- - - - - - - - -

1.96 3.19 4.47 5.11 5.72 6.28 6.79 7.80

6.75

- - - - - - - - -

- - - - - - - - - -

- - - - - - - - - -

- - - - - - - - - 1.92 3.18 4.45 5.10 5.69 6.22 6.70

1.89 3.16 4.43 5.07 5.65 6.17 6.63

1.82

1.78

1.73

4.41 5.60 6.11 6.55

- - - - - - - - - - - -

- - - - - - - - - - - - -

- - - - - - - - - - - - -

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.01 0.07 0.09 0.12

0.01 0.09 0.13 0.16

0.02 0.14 0.19 0.24

0.04 0.27 0.38 0.47

0.00 0.01 0.01 0.02

0.00 0.02 0.03 0.03

0.00 0.03 0.04 0.05

0.01 0.04 0.05 0.07

0.01 0.05 0.07 0.08

0.01 0.06 0.08 0.10

0.01 0.07 0.09 0.12

0.01 0.08 0.11 0.13

0.01 0.08 0.12 0.15

0.01 0.09 0.13 0.16

0.02 0.10 0.15 0.18

0.02 0.11 0.16 0.20

0.02 0.12 0.17 0.21

0.02 0.13 0.19 0.23

0.02 0.14 0.20 0.25

0.02 0.15 0.21 0.26

0.02 0.16 0.23 0.28

0.03 0.17 0.24 0.30

0.03 0.18 0.25 0.31

0.03 0.19 0.27 0.33

0.03 0.20 0.28 0.35

0.03 0.21 0.29 0.36

0.03 0.22 0.31 0.38

0.03 0.23 0.32 0.39

0.04 0.24 0.33 0.41

0.04 0.25 0.35 0.43

0.04 0.25 0.36 0.44

0.04 0.26 0.37 0.46

0.04 0.27 0.39 0.48

0.04 0.28 0.40 0.49

0.05 0.29 0.41 0.51

0.05 0.30 0.43 0.53

0.05 0.31 0.44 0.54

0.05 0.32 0.45 0.56

0.05 0.33 0.47 0.58

0.05 0.34 0.48 0.59

0.05 0.35 0.49 0.61

0.06 0.36 0.51 0.63

0.06 0.37 0.52 0.64

0.06 0.38 0.54 0.66

0.06 0.39 0.55 0.67

0.06 0.40 0.56 0.69

0.06 0.41 0.58 0.71

0.06 0.41 0.59 0.72

0.07 0.42 0.60 0.74

0.07 0.43 0.62 0.76

0.07 0.44 0.63 0.77

0.07 0.45 0.64 0.79

0.07 0.46 0.66 0.81

0.07 0.47 0.67 0.82

0.07 0.48 0.68 0.84

0.08 0.49 0.70 0.86

0.08 0.50 0.71 0.87

0.08 0.51 0.72 0.89

0.08 0.52 0.74 0.90

0.08 0.53 0.75 0.92

0.08 0.55 0.78 0.95

0.09 0.57 0.80 0.99

0.09 0.58 0.83 1.02

0.09 0.60 0.86 1.05

0.10 0.62 0.88 1.09

0.10 0.64 0.91 1.12

0.10 0.66 0.94 1.15

0.10 0.68 0.96 1.18

0.11 0.70 0.99 1.22

0.11 0.72 1.02 1.25

0.11 0.74 1.04 1.28

0.12 0.75 1.07 1.32

0.12 0.77 1.10 1.35

0.12 0.79 1.12 1.38

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-39

Calculation of V-belt drives design

Power Rating Table

5

5V-Section Power Rating

Table 2-39

[kW] small pulley speed nd(rpm)

700

950

1450

2850

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

5100

5200

5300

5400

5500

Basic power rating for small pulley effective diameter : Ps

Small pulley effective diameter de (mm)

Additional power rating for speed ratio (Pa)

Speed ratio

140 150 160 180 190 200 212 224 236 250 280 315 355 375 400

4.75 5.62 6.48 8.19 9.03 9.87 10.86 11.85 12.82 13.95 16.32 19.01 21.99 23.43 25.19

6.55 7.80 9.03 11.46 12.65 13.83 15.22 16.58 17.92 19.46 22.63 26.11 29.78 31.49 33.48

0.72 0.83 0.93 1.15 1.26 1.36 1.49 1.62 1.74 1.89 2.20 2.56 2.97 3.18 3.43

1.31 1.51 1.72 2.13 2.33 2.54 2.78 3.02 3.26 3.54 4.14 4.83 5.61 5.99 6.47

1.84 2.15 2.45 3.05 3.34 3.64 3.99 4.34 4.69 5.10 5.97 6.97 8.10 8.66 9.35

4.15 4.89 5.63 7.10 7.82 8.54 9.40 10.25 11.10 12.07 14.14 16.50 19.12 20.41 21.98

4.56 5.38 6.21 7.83 8.63 9.43 10.38 11.32 12.26 13.33 15.61 18.19 21.05 22.45 24.15

4.95 5.86 6.76 8.54 9.42 10.29 11.33 12.36 13.38 14.55 17.02 19.81 22.89 24.38 26.19

5.33 6.32 7.30 9.23 10.18 11.13 12.25 13.36 14.46 15.72 18.37 21.36 24.62 26.19 28.09

5.69 6.76 7.81 9.89 10.92 11.93 13.14 14.33 15.50 16.85 19.67 22.82 26.24 27.87 29.83

6.04 7.19 8.32 10.54 11.63 12.71 13.99 15.26 16.50 17.93 20.90 24.21 27.75 29.43 31.42

6.38 7.60 8.80 11.16 12.32 13.46 14.82 16.15 17.46 18.96 22.07 25.50 29.14 30.84 32.84

6.71 7.99 9.27 11.76 12.98 14.19 15.61 17.01 18.38 19.94 23.17 26.70 30.39 32.10 34.08

-

-

- - - -

- - -

- - -

- - -

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

- - - - - - - - - - - - - - -

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.06 0.37 0.53 0.65

0.08 0.51 0.72 0.88

0.12 0.77 1.10 1.35

0.24 1.52 2.16 2.65

0.01 0.05 0.08 0.09

0.02 0.11 0.15 0.19

0.02 0.16 0.23 0.28

0.03 0.21 0.30 0.37

0.04 0.27 0.38 0.47

0.05 0.32 0.45 0.56

0.06 0.37 0.53 0.65

0.07 0.43 0.61 0.75

0.07 0.48 0.68 0.84

0.08 0.53 0.76 0.93

0.09 0.59 0.83 1.02

0.10 0.64 0.91 1.12

0.11 0.69 0.98 1.21

0.12 0.75 1.06 1.30

0.12 0.80 1.14 1.40

0.13 0.85 1.21 1.49

0.14 0.91 1.29 1.58

0.15 0.96 1.36 1.68

0.16 1.01 1.44 1.77

0.17 1.07 1.51 1.86

0.17 1.12 1.59 1.96

0.18 1.17 1.67 2.05

0.19 1.23 1.74 2.14

0.20 1.28 1.82 2.24

0.21 1.33 1.89 2.33

0.21 1.39 1.97 2.42

0.22 1.44 2.04 2.51

0.23 1.49 2.12 2.61

0.24 1.55 2.20 2.70

0.25 1.60 2.27 2.79

0.26 1.65 2.35 2.89

0.26 1.71 2.42 2.98

0.27 1.76 2.50 3.07

0.28 1.81 2.57 3.17

0.29 1.87 2.65 3.26

0.30 1.92 2.73 3.35

0.31 1.97 2.80 3.45

0.31 2.03 2.88 3.54

0.32 2.08 2.95 3.63

0.33 2.13 3.03 3.73

0.34 2.19 3.10 3.82

0.35 2.24 3.18 3.91

0.35 2.29 3.26 4.00

0.36 2.35 3.33 4.10

0.37 2.40 3.41 4.19

0.38 2.45 3.48 4.28

0.39 2.51 3.56 4.38

0.40 2.56 3.64 4.47

0.40 2.61 3.71 4.56

0.41 2.67 3.79 4.66

0.42 2.72 3.86 4.75

0.43 2.77 3.94 4.84

0.44 2.83 4.01 4.94

0.45 2.88 4.09 5.03

0.45 2.93 4.17 5.12

2

Design

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-40

5 Calculation of V-belt drives design

Power Rating Table

8V-Section Power Rating

2

Design

Table 2-40

[kW] small pulley speed nd(rpm)

450

700

950

1450

Basic power rating for small pulley effective diameter : Ps

Small pulley effective diameter de (mm)

Additional power rating for speed ratio (Pa)

Speed ratio

315 335 355 375 400 425 450 475 500 530 560 600 630 710 800

18.09 20.34 22.58 24.80 27.55 30.28 32.98 35.66 38.32 41.48 44.60 48.71 51.74 59.66 68.24

25.93 29.22 32.47 35.69 39.65 43.55 47.38 51.15 54.86 59.21 63.47 68.97 72.98 83.08 93.40

1.01

to

1.05

1.06

to

1.26

1.27

to

1.57

1.57<

0.19 1.22 1.73 2.13

0.29 1.90 2.70 3.31

2.64 2.94 3.23 3.52 3.89 4.25 4.61 4.97 5.33 5.76 6.19 6.75 7.18 8.30 9.56

0.40 2.58 3.66 4.50

0.61 3.93 5.58 6.87

0.02 0.14 0.19 0.24

50

100

150

200

250

7.01 7.83 8.65 9.47 10.48 11.49 12.50 13.50 14.50 15.69 16.88 18.46 19.63 22.74 26.21

9.02 10.09 11.16 12.23 13.55 14.87 16.18 17.49 18.79 20.34 21.89 23.94 25.46 29.50 33.98

10.95 12.27 13.58 14.89 16.52 18.14 19.75 21.35 22.94 24.84 26.73 29.23 31.09 36.01 41.45

0.04 0.27 0.39 0.47

0.06 0.41 0.58 0.71

0.08 0.54 0.77 0.95

0.10 0.68 0.96 1.18

800

850

900

950

1000

1050

1100

1150

1200

1250

1300

1350

1400

1450

1500

1550

1600

1650

1700

1750

1800

1850

1900

1950

2000

2050

2100

2150

2200

2250

300

350

400

450

500

550

600

650

700

750

12.82 14.38 15.93 17.48 19.40 21.30 23.20 25.09 26.96 29.20 31.42 34.35 36.53 42.28 48.62

14.63 16.42 18.21 19.98 22.19 24.38 26.56 28.72 30.86 33.42 35.96 39.30 41.79 48.32 55.48

16.38 18.41 20.42 22.42 24.91 27.37 29.82 32.24 34.65 37.51 40.35 44.09 46.86 54.12 62.03

18.09 20.34 22.58 24.80 27.55 30.28 32.98 35.66 38.32 41.48 44.60 48.71 51.74 59.66 68.24

19.75 22.22 24.67 27.10 30.12 33.10 36.06 38.98 41.88 45.31 48.70 53.14 56.43 64.94 74.08

21.36 24.05 26.71 29.35 32.61 35.84 39.03 42.19 45.31 49.00 52.64 57.40 60.90 69.94 79.55

22.93 25.82 28.69 31.53 35.03 38.50 41.92 45.29 48.62 52.56 56.42 61.46 65.16 74.64 84.61

24.46 27.55 30.61 33.64 37.38 41.07 44.70 48.28 51.81 55.96 60.03 65.32 69.19 79.03 89.23

25.93 29.22 32.47 35.69 39.65 43.55 47.38 51.15 54.86 59.21 63.47 68.97 72.98 83.08 93.40

27.37 30.84 34.28 37.67 41.84 45.94 49.96 53.91 57.78 62.31 66.72 72.40 76.51 86.79 97.07

0.13 0.81 1.16 1.42

0.15 0.95 1.35 1.66

0.17 1.09 1.54 1.89

0.19 1.22 1.73 2.13

0.21 1.36 1.93 2.37

0.23 1.49 2.12 2.60

0.25 1.63 2.31 2.84

0.27 1.76 2.50 3.08

0.29 1.90 2.70 3.31

0.31 2.03 2.89 3.55

0.34 2.17 3.08 3.79

0.36 2.31 3.27 4.02

- -

-

- -

-

0.38 2.44 3.47 4.26

0.40 2.58 3.66 4.50

0.42 2.71 3.85 4.74

0.44 2.85 4.04 4.97

0.46 2.98 4.24 5.21

0.48 3.12 4.43 5.45

0.50 3.26 4.62 5.68

0.52 3.39 4.81 5.92

0.55 3.53 5.01 6.16

0.57 3.66 5.20 6.39

0.59 3.80 5.39 6.63

0.61 3.93 5.58 6.87

0.63 4.07 5.78 7.10

0.65 4.20 5.97 7.34

0.67 4.34 6.16 7.58

0.69 4.48 6.35 7.81

0.71 4.61 6.55 8.05

0.73 4.75 6.74 8.29

0.76 4.88 6.93 8.52

0.78 5.02 7.12 8.76

0.80 5.15 7.32 9.00

0.82 5.29 7.51 9.23

0.84 5.43 7.70 9.47

0.86 5.56 7.89 9.71

0.88 5.70 8.09 9.94

0.90 5.83 8.28 10.18

0.92 5.97 8.47 10.42

0.94 6.10 8.66 10.65

Belt speed is over 30 m/sec. to 35 m/sec. Please consult our sales company or Engineering Department.

Belt speed is over 35 m/sec. to 40 m/sec. Please consult our sales company or Engineering Department.

2-41

Calculation of V-belt drives design

2-42

2

Design

Drive Selection Table

Maxstar Wedge V-Belts

2

Design

3V•3VX (SR = 1.00 ~ 1.41)

Table 2-41-1

Drive Selection Table

Speed ratio

Effective diameter

(mm)

3V

Small pulley Large pulley

250

1.00 67 67

3V

265

3V

280

3V

300

3V

315

3V

335

Center distance (mm)

3V

355

3V

375

3V

400

3V

425

3V

450

3V

475

3V

500

3V

530

212 231 250 276 295 320 346 371 403 435 466 498 530 568

1.00 71

1.00 75

1.00 80

1.00 85

1.00 90

1.00 95

71

75

80

85

90

95

206 225 244 269 288 314 339 365 396 428 460 492 523 561

200 219 238 263 282 308 333 359 390 422 454 486 517 555

192 211 230 255 274 300 325 351 382 414 446 478 509 547

184 203 222 247 266 292 317 343 374 406 438 470 501 539

176 195 214 240 259 284 310 335 367 399 430 462 494 532

168 187 206 232 251 276 302 327 359 391 422 454 486 524

1.00 100

1.00 112

1.00 125

1.00 140

1.00 150

1.00 160

100

112

125

140

150

160

160 179 198 224 243 268 294 319 351 383 414 446 478 516

142 161 180 205 224 250 275 301 332 364 396 428 459 497

-

-

-

-

140 159 185 204 229 255 280 312 344 375 407 439 477

-

-

-

-

-

161 180 206 231 257 288 320 352 384 415 453

-

-

164 190 215 241 272 304 336 368 399 437

174 200 225 257 289 320 352 384 422

1.00 180

1.00 200

1.00 250

1.00 315

1.05 95

1.06 67

1.06 71

1.06 80

1.06 85

1.06 90

1.07 75

1.07 140

1.07 150

1.11 90

1.11 180

1.12 67

1.12 85

1.12 100

1.12 112

1.12 125

1.13 71

1.13 80

1.13 160

1.14 75

1.14 140

1.18

1.18

1.19

1.20

1.20

1.20

1.41

85

95

80

67

71

75

1.20 125

1.20 150

1.25

1.25

80

90

1.25 100

1.25 112

1.25 160

1.25 200

1.26 250

1.27 67

1.27 71

1.27 75

1.27 315

1.28 125

1.29 140

1.32 85

1.32 95

1.34 71

1.34 75

1.34 112

1.34 150

1.35 67

1.39 90

1.39 180

1.40 100

80

180

200

250

315

100

71

75

85

90

95

80

150

160

100

200

75

95

112

125

140

80

90

180

85

160

100

112

95

80

85

90

150

180

100

112

125

140

200

250

315

85

90

95

400

160

180

112

125

95

100

150

200

90

125

250

140

112

-

-

-

-

-

199 218 237 262 281 307 332 358 389 421 453 485 516 554

184 203 222 247 266 292 317 343 374 406 438 470 501 539

-

192 211 230 255 274 300 325 351 382 414 446 478 509 547

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

194 225 257 289 321 352 390

-

-

-

-

-

-

226 257 289 321 359

-

-

-

-

-

-

-

-

280

-

164 183 202 228 247 272 298 323 355 387 418 450 482 520

209 228 247 273 292 317 343 368 400 432 463 495 527 565

203 222 241 266 285 311 336 362 393 425 457 489 520 558

188 207 226 251 270 296 321 347 378 410 442 474 505 543

180 199 218 244 263 288 314 339 371 403 434 466 498 536

172 191 210 236 255 280 306 331 363 395 426 458 490 528

196 215 234 259 278 304 329 355 386 418 450 482 513 551

-

-

-

-

-

-

-

172 198 223 249 280 312 344 376 407 445

182 207 233 264 296 328 360 391 429

168 187 206 232 251 276 302 327 359 391 422 454 486 524

209 241 273 305 336 374

206 225 244 269 288 314 339 365 396 428 460 492 523 561

176 195 214 240 259 284 310 335 367 399 430 462 494 532

151 170 189 214 233 259 284 310 341 373 405 437 468 506

131 150 169 195 214 239 265 290 322 354 385 417 449 487

147 173 192 217 243 268 300 332 363 395 427 465

184 209 241 273 304 336 368 406

164 190 215 241 272 304 336 368 399 437

172 191 210 236 255 280 306 331 363 395 426 458 490 528

155 174 193 218 237 263 288 314 345 377 409 441 472 510

180 199 218 243 262 288 313 339 370 402 434 466 497 536

202 221 240 265 284 310 335 361 392 424 456 488 520 558

195 214 233 258 277 303 328 354 385 417 449 481 512 550

188 207 226 251 270 296 321 347 378 410 442 474 505 543

-

-

-

-

-

165 184 209 235 260 292 324 355 387 419 457

191 217 248 280 312 344 376 414

176 195 214 239 258 284 309 335 366 399 430 462 494 532

158 178 197 222 241 267 292 318 349 381 413 445 476 514

140 159 178 204 223 248 274 300 331 363 395 427 458 496

-

-

-

138 157 183 202 227 253 278 310 342 373 405 437 475

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

193 224 256 288 320 352 390

-

-

-

-

-

-

-

-

198 217 236 261 280 306 331 357 389 421 452 484 516 554

191 210 229 254 273 299 324 350 381 413 445 477 508 546

184 203 222 247 266 292 317 343 374 406 438 470 501 539

-

156 175 201 226 252 284 316 347 379 411 449

173 199 224 256 288 320 352 383 421

162 181 200 226 245 270 296 321 353 385 417 449 480 518

144 163 182 208 227 252 278 303 335 367 398 430 462 500

187 206 225 250 269 295 320 346 377 409 441 473 504 542

180 199 218 243 262 288 313 339 370 402 434 466 497 535

-

-

-

149 174 193 219 244 270 302 334 365 397 429 467

200 232 264 296 328 359 397

194 213 232 257 276 302 327 353 385 417 448 480 512 550

148 167 186 211 230 256 282 307 339 371 402 434 466 504

-

-

147 166 191 211 236 262 287 319 351 382 415 446 484

166 185 204 230 249 274 300 325 357 389 420 452 484 522

2-43

Drive Selection Table

Color coding of Power rating correction factor : Kc

0.7

0.8

0.9

1.0

1.1

1.2

3V

3VX

1.00 ~ 1.41

3V

560

3V

600

3V

630

3V

670

3V

710

3V

750

3V

800

Center distance (mm)

3V

850

3V

900

3V

950

3V

1000

3V

1060

3V

1120

3V

1180

3V

1250

3V

1320

3V

1400

Speed ratio

606 657 695 746 796 847 911 974 1038 1101 1165 1241 1317 1393 1482 1571 1673 1.00

570 621 659 710 760 811 875 938 1002 1065 1129 1205 1281 1357 1446 1535 1637 1.00

-

570 621 659 710 760 811 875 938 1002 1065 1129 1205 1281 1357 1446 1535 1637 1.12

570 621 659 710 760 811 875 938 1002 1065 1129 1205 1281 1357 1446 1535 1637 1.25

552 603 641 692 743 794 857 921 984 1048 1111 1187 1264 1340 1429 1518 1619 1.25

2

Design

-

389 452 516 580 644 707 783 860 936 1025 1114 1216 1.27

2-44

Drive Selection Table

2

Design

3V•3VX (SR = 1.42 ~ 2.52)

Table 2-41-2

Drive Selection Table

Speed ratio

71

85

67

75

160

200

80

100

75

180

90

112

67

140

80

85

95

160

71

250

315

90

100

125

200

75

80

67

150

95

71

85

125

85

150

67

75

90

95

80

200

71

95

315

250

100

112

Effective diameter

(mm)

3V

Small pulley Large pulley

250

71 100 183

67

112

140

125

85

95

95

160

200

180

125

140

190

-

-

-

151

131

67

75

100

90

80

160

100

112

150

140

125

250

186

170

-

135

155

-

180

71

85

90

112

140

100

67

75

80

315

112

150

500

400

160

180

200

140

250

112

125

150

160

140

315

125

150

160

200

250

180

125

140

150

-

161

129

-

-

-

-

164

145

132

-

138

-

175

158

-

-

142

-

-

-

-

173

-

-

160

200

160

180

400

500

200

250

160

400

200

250

150

315

180

160

180

315

140

500

630

180

200

250

400

150

160

140

315

200

150

180

-

-

-

128

-

131

-

-

-

-

-

-

141

-

-

-

-

-

-

-

-

-

148

-

-

136

-

150

-

-

138

-

2.28

2.37

2.41

2.42

2.51

2.51

2.52

2.52

2.15

2.23

2.24

2.25

2.26

2.26

2.27

1.89

1.91

1.98

1.99

2

2

2.01

2.01

2.01

2.01

2.02

2.02

2.11

2.11

2.12

2.13

2.13

1.61

1.66

1.67

1.68

1.68

1.68

1.69

1.76

1.58

1.59

1.59

1.59

1.6

1.61

1.61

1.76

1.77

1.78

1.79

1.79

1.79

1.81

1.88

1.88

1.89

1.42

1.43

1.43

1.43

1.44

1.48

1.48

1.5

1.5

1.51

1.56

1.57

1.57

-

-

-

148

-

151

-

-

146

-

-

-

161

-

-

-

-

-

-

139

-

-

167

-

-

155

142

170

-

-

158

-

-

157

-

195

178

145

-

161

-

-

-

-

192

141

-

-

181

148

136

-

-

-

183

164

152

3V

265

202

209

-

-

-

170

150

205

189

138

154

174

-

-

-

-

168

-

171

146

-

165

-

-

-

180

-

143

-

-

-

-

159

-

-

187

-

-

175

162

189

-

-

178

-

-

177

-

214

197

164

152

180

-

211

161

-

-

148

-

-

200

168

155

-

-

-

203

184

171

3V

280

221

228

-

-

-

190

169

224

208

157

173

193

-

214

166

217

193

-

-

169

-

211

-

163

-

226

-

189

204

179

-

232

-

-

182

-

-

-

220

208

235

-

160

223

186

-

222

-

258

242

209

197

225

-

255

206

-

-

193

167

-

245

213

201

-

-

176

248

229

217

3V

315

265

272

185

-

-

234

214

268

252

202

218

238

-

-

-

-

194

-

197

173

-

192

-

-

-

206

-

169

185

159

-

212

-

-

163

-

-

-

201

188

215

-

-

204

166

-

202

-

239

223

190

178

206

-

236

187

-

-

174

-

-

225

194

181

-

-

156

228

210

197

3V

300

246

253

166

-

-

215

195

249

233

183

199

219

-

240

193

243

219

-

-

196

-

237

-

190

-

252

-

215

230

205

-

257

-

-

209

183

-

-

246

234

260

-

186

249

212

-

247

-

284

267

235

223

251

-

281

231

-

-

219

193

-

270

239

226

175

-

202

273

255

242

294

278

228

244

264

-

3V

335

291

Center distance (mm)

3V

355

316

3V

375

342

3V

400

373

298

211

-

184

260

240

323

236

181

210

285

265

349

262

207

235

311

291

381

293

239

267

342

323

319

304

253

269

289

-

345

329

279

295

315

-

376

361

311

326

346

-

-

307

257

-

-

245

219

192

273

-

310

293

261

249

277

-

296

264

252

201

-

228

299

280

268

-

332

283

-

-

271

245

218

299

-

335

318

286

274

302

-

321

290

278

227

-

253

324

306

294

-

353

322

310

259

-

285

356

338

325

250

330

-

367

350

318

306

334

-

364

314

-

-

302

277

266

220

269

245

-

-

223

-

263

-

216

-

277

-

242

256

231

-

283

-

-

235

209

-

-

272

259

286

-

213

275

238

292

246

295

271

-

-

249

187

289

-

242

-

303

-

268

282

257

-

309

-

-

261

236

-

-

297

285

312

-

239

300

264

324

278

326

303

-

-

282

220

321

-

275

212

335

-

300

313

289

-

341

-

-

292

268

204

-

329

317

343

-

271

332

296

451

407

454

432

-

-

411

352

448

-

403

344

463

263

428

441

417

250

468

-

-

421

396

335

-

457

445

471

257

400

460

424

378

457

317

494

477

445

434

461

-

491

442

-

-

430

404

-

480

449

437

387

324

413

483

465

453

3V

500

500

508

421

367

394

470

450

504

488

438

454

473

310

420

375

423

400

-

-

379

320

417

-

372

312

431

-

396

409

385

-

436

-

-

389

364

303

-

425

413

439

-

368

428

392

346

426

285

462

446

414

402

430

-

459

410

-

-

398

373

-

449

418

406

356

292

381

452

433

421

3V

475

469

476

389

335

363

438

418

472

456

406

422

442

278

490

445

493

470

-

-

449

391

487

-

442

382

501

303

466

479

455

290

506

-

-

459

435

373

-

495

483

509

296

438

498

462

416

496

355

532

515

484

472

499

-

529

480

-

-

468

442

276

518

487

475

426

363

451

521

503

491

3V

530

539

546

459

405

433

508

488

542

526

476

492

511

348

388

343

390

367

-

-

346

287

385

-

339

279

399

-

364

377

353

-

404

-

-

357

332

270

-

393

381

407

-

336

396

360

314

394

252

430

414

382

370

398

-

427

378

-

-

366

340

-

417

386

374

323

259

349

420

401

389

3V

450

437

444

357

303

331

406

386

440

424

374

390

410

245

356

311

359

336

-

-

314

254

353

-

307

246

367

-

332

346

321

-

373

-

-

325

300

237

-

361

349

376

-

304

364

328

282

362

220

399

382

350

338

366

-

396

346

-

-

334

309

-

385

354

342

292

227

318

388

370

358

3V

425

405

413

325

271

299

375

355

409

393

343

358

378

-

2-45

Drive Selection Table

3V

560

3V

600

3V

630

3V

670

3V

710

3V

750

3V

800

Color coding of Power rating correction factor : Kc

0.7

0.8

0.9

1.0

1.1

1.2

Center distance (mm)

3V

850

3V

900

3V

950

3V

1000

3V

1060

3V

1120

3V

1180

3V

1250

3V

1320

3V

3VX

1.42 ~ 2.52

3V

1400

Speed ratio

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

503 583 662 740 830 921 1024 2.00

2

Design

-

-

-

-

373 441 508 574 639 704 782 860 937 1027 1117 1219 2.51

2-46

Drive Selection Table

2

Design

3V•3VX (SR = 2.53 ~ 9.56)

Table 2-41-3

Drive Selection Table

4.50 112

4.53 140

4.76 85

4.77 67

5.05 100

5.06 80

5.08 125

5.32 95

5.40 75

5.62 90

5.68 112

5.71 71

5.95 85

6.06 67

6.33 80

6.36 100

6.70 95

6.76 75

7.08 90

7.15 71

7.50 85

7.58 67

7.98 80

8.52 75

9.01 71

9.56 67

Speed ratio

Effective diameter

(mm)

3V

Small pulley Large pulley

250

2.53 125 315 -

2.53 250

2.56 71

2.65 95

2.68 150

2.69 75

2.72 67

630

180

250

400

200

180

-

-

-

-

-

-

2.79 180

2.80 90

2.83 112

2.85 71

2.87 140

2.97 85

500

250

315

200

400

250

-

-

-

-

-

-

3.02 67

3.14 160

3.16 80

3.16 200

3.18 100

3.22 125

3.35 95

3.35 150

3.37 75

3.52 180

3.53 90

3.56 71

3.59 140

3.60 112

3.74 85

3.78 67

3.96 160

3.98 80

4.03 125

4.04 100

4.23 150

4.25 75

4.25 95

4.49 90

4.50 71

200

500

250

630

315

400

315

500

250

630

315

250

500

400

315

250

630

315

500

400

630

315

400

400

315

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

500

630

400

315

500

400

630

500

400

500

630

400

500

400

500

630

630

500

630

500

630

500

630

630

630

630

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

3V

265

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

3V

280

-

3V

300

-

3V

315

-

3V

335

-

Center distance (mm)

3V

355

-

3V

375

-

3V

400

-

3V

425

-

3V

450

-

3V

475

3V

500

3V

530

-

148 175 195 222 248 274 306 338 370 403 434 473

-

-

-

-

-

-

-

-

-

190 224 257 290 323 356 394

-

152 173 200 226 253 285 318 350 382 414 453

151 178 198 224 251 277 309 341 373 406 437 476

-

-

-

-

-

-

-

-

193 227 261 294 327 359 398

-

155 175 202 229 256 288 321 353 385 417 456

-

196 230 264 297 330 363 401

-

-

-

-

-

-

-

-

-

-

-

157 178 205 232 258 291 323 356 388 420 458

-

-

-

-

-

-

-

-

199 233 267 300 333 366 405

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

176 205 239 273 306 340 372 411

-

-

-

174 202 237 271 304 337 369 408

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

179 207 242 276 309 342 375 414

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

202 239 276 310 351

-

-

-

-

-

-

-

-

-

-

249

-

251

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

2-47

Drive Selection Table

-

-

3V

560

-

3V

600

-

3V

630

-

3V

670

-

3V

710

-

3V

750

-

3V

800

-

Color coding of Power rating correction factor : Kc

0.7

0.8

0.9

1.0

1.1

1.2

3V

3VX

2.53 ~ 9.56

Center distance (mm)

3V

850

-

3V

900

-

3V

950

3V

1000

3V

1060

3V

1120

3V

1180

3V

1250

3V

1320

3V

1400

Speed ratio

478 546 626 706 784 876 967 1070 2.53

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

451 522 591 672 753 832 924 1015 1119 3.52

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

2

Design

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

2-48

Drive Selection Table

2

Design

5V•5VX (SR = 1.00 ~ 1.27)

Table 2-42-1

Drive Selection Table

1.12 236

1.12 250

1.13 160

1.13 265

1.13 280

1.13 315

1.13 355

1.13 400

1.14 150

1.18 170

1.18 180

1.18 190

1.18 200

1.18 212

1.18 300

1.19 160

1.19 224

1.19 236

1.19 265

1.20 150

1.25 250

1.25 160

1.25 170

1.25 180

1.25 190

1.25 200

1.25 212

1.25 224

1.25 400

1.26 250

1.26 500

1.27 150

Speed ratio

Effective diameter

(mm)

5V

Small pulley Large pulley

500

1.00 150 150

1.00 160

1.00 170

1.00 180

1.00 190

1.00 200

1.00 212

160

170

180

190

200

212

1.00 224

1.00 236

1.00 250

1.00 265

1.00 280

1.00 300

224

236

250

265

280

300

1.00 315

1.00 355

1.00 400

1.00 450

1.00 500

1.05 190

1.05 224

315

355

400

450

500

200

236

5V

530

5V

560

5V

600

5V

630

5V

670

Center distance (mm)

5V

710

5V

750

5V

800

5V

850

5V

900

5V

950

5V

1000

5V

1060

5V

1120

5V

1180

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

322 360 411 462 513 576 640 703 767 830 906 983 1059

-

-

-

-

-

329 380 430 481 545 608 672 735 799 875 951 1027

-

-

-

-

356 407 458 521 585 648 712 775 851 928 1004

-

-

-

-

-

-

395 458 522 585 649 712 788 865 941

-

-

-

451 515 578 642 718 794 870

500 563 639 716 792

561 637 713

329 367 405 456 494 545 595 646 710 773 837 900 964 1040 1116 1192

368 418 469 533 596 660 723 787 863 939 1015 1.05 300

1.06 160

1.06 170

1.06 180

1.06 200

1.06 212

1.06 236

1.06 250

1.06 265

1.07 150

1.07 280

1.11 180

1.11 212

1.11 450

1.12 170

1.12 190

1.12 200

1.12 224

280

160

300

200

236

500

190

212

224

250

315

170

180

190

212

224

250

265

253 291 329 380 418 469 520 571 634 698 761 825 888 964 1041 1117

-

-

-

-

-

-

-

283 334 372 423 473 524 588 651 715 778 842 918 994 1070

-

306 344 395 446 497 560 624 687 751 814 890 967 1043

523 599 676 752

-

-

-

236

250

265

280

500

315

630

190

280

315

180

300

200

212

224

265

280

180

300

315

355

400

450

170

200

212

224

236

250

355

190

265

-

-

-

-

-

-

-

-

-

-

-

-

-

-

318 356 407 457 508 572 636 699 763 826 902 979 1055

-

-

-

332 383 434 485 548 612 675 739 802 879 955 1031

-

-

-

-

-

-

375 426 489 553 616 680 744 820 896 972

-

-

-

422 486 550 613 677 753 829 905

475 538 602 678 754 831

327 365 403 454 492 543 593 644 708 771 835 898 962 1038 1115 1191

-

-

-

-

-

-

-

-

-

288 326 377 415 466 517 568 632 695 759 822 886 962 1038 1114

-

-

-

-

-

-

-

-

-

-

-

-

-

305 344 395 445 496 560 623 687 751 814 890 967 1043

329 367 418 469 520 583 647 711 774 838 914 990 1066

-

-

-

-

-

386 437 501 564 628 692 755 831 908 984

497 561 637 714 790

317 355 406 457 508 571 635 698 762 826 902 978 1054

608

2-49

Drive Selection Table

Color coding of Power rating correction factor : Kc

0.7

0.8

0.9

1.0

1.1

1.2

5V

5VX

1.00 ~ 1.27

Center distance (mm)

5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V

1250 1320 1400 1500 1600 1700 1800 1900 2000 2120 2240 2360 2500 2650 2800 3000 3150 3350 3550

Speed ratio

1352 1441 1542 1669 1796 1923 2050 2177 2304 2457 2609 2761 2939 3130 3320 3574 3765 4019 4273 1.00

1336 1425 1527 1654 1781 1908 2035 2162 2289 2441 2594 2746 2924 3114 3305 3559 3749 4003 4257 1.00

1320 1409 1511 1638 1765 1892 2019 2146 2273 2425 2578 2730 2908 3098 3289 3543 3733 3987 4241 1.00

1305 1394 1495 1622 1749 1876 2003 2130 2257 2410 2562 2714 2892 3083 3273 3527 3718 3972 4226 1.00

1289 1378 1480 1607 1734 1861 1988 2115 2242 2394 2547 2699 2877 3067 3258 3512 3702 3956 4210 1.00

1273 1362 1464 1591 1718 1845 1972 2099 2226 2378 2531 2683 2861 3051 3242 3496 3686 3940 4194 1.00

1254 1343 1445 1572 1699 1826 1953 2080 2207 2359 2512 2664 2842 3032 3223 3477 3667 3921 4175 1.00

1236 1325 1426 1553 1680 1807 1934 2061 2188 2341 2493 2645 2823 3014 3204 3458 3649 3903 4157 1.00

1217 1306 1407 1534 1661 1788 1915 2042 2169 2322 2474 2626 2804 2995 3185 3439 3630 3884 4138 1.00

1195 1284 1385 1512 1639 1766 1893 2020 2147 2300 2452 2604 2782 2973 3163 3417 3608 3862 4116 1.00

1171 1260 1362 1489 1616 1743 1870 1997 2124 2276 2429 2581 2759 2949 3140 3394 3584 3838 4092 1.00

1148 1237 1338 1465 1592 1719 1846 1973 2100 2253 2405 2557 2735 2926 3116 3370 3561 3815 4069 1.00

1116 1205 1307 1434 1561 1688 1815 1942 2069 2221 2374 2526 2704 2894 3085 3339 3529 3783 4037 1.00

1093 1182 1283 1410 1537 1664 1791 1918 2045 2198 2350 2502 2680 2871 3061 3315 3506 3760 4014 1.00

1030 1119 1220 1347 1474 1601 1728 1855 1982 2135 2287 2439 2617 2808 2998 3252 3443 3697 3951 1.00

959 1048 1150 1277 1404 1531 1658 1785 1912 2064 2217 2369 2547 2737 2928 3182 3372 3626 3880 1.00

881 970 1071 1198 1325 1452 1579 1706 1833 1986 2138 2290 2468 2659 2849 3103 3294 3548 3802 1.00

802 891 993 1120 1247 1374 1501 1628 1755 1907 2060 2212 2390 2580 2771 3025 3215 3469 3723 1.00

1281 1370 1472 1599 1726 1853 1980 2107 2234 2386 2539 2691 2869 3059 3250 3504 3694 3948 4202 1.05

1226 1315 1417 1544 1671 1798 1925 2052 2179 2331 2484 2636 2814 3004 3195 3449 3639 3893 4147 1.05

1104 1193 1295 1422 1549 1676 1803 1930 2057 2209 2362 2514 2692 2882 3073 3327 3517 3771 4025 1.05

1328 1417 1519 1646 1773 1900 2027 2154 2281 2433 2586 2738 2916 3106 3297 3551 3741 3995 4249 1.06

1313 1402 1503 1630 1757 1884 2011 2138 2265 2418 2570 2722 2900 3091 3281 3535 3726 3980 4234 1.06

1297 1386 1487 1614 1741 1868 1995 2122 2249 2402 2554 2706 2884 3075 3265 3519 3710 3964 4218 1.06

1264 1353 1454 1581 1708 1835 1962 2089 2216 2369 2521 2673 2851 3042 3232 3486 3677 3931 4185 1.06

1245 1334 1436 1563 1690 1817 1944 2071 2198 2350 2503 2655 2833 3023 3214 3468 3658 3912 4166 1.06

1206 1295 1396 1523 1650 1777 1904 2031 2158 2311 2463 2615 2793 2984 3174 3428 3619 3873 4127 1.06

1183 1272 1373 1501 1628 1755 1882 2009 2136 2288 2441 2593 2771 2961 3152 3406 3596 3850 4104 1.06

1159 1248 1350 1477 1604 1731 1858 1985 2112 2264 2417 2569 2747 2937 3128 3382 3572 3826 4080 1.06

1344 1433 1535 1662 1789 1916 2043 2170 2297 2449 2602 2754 2932 3122 3313 3567 3757 4011 4265 1.07

1132 1221 1322 1449 1576 1703 1830 1957 2084 2237 2389 2541 2719 2910 3100 3354 3545 3799 4053 1.07

1289 1378 1480 1607 1734 1861 1988 2115 2242 2394 2547 2699 2877 3067 3258 3512 3702 3956 4210 1.11

1236 1325 1426 1553 1680 1807 1934 2061 2188 2341 2493 2645 2823 3014 3204 3458 3649 3903 4157 1.11

841 930 1032 1159 1286 1413 1540 1667 1794 1946 2099 2251 2429 2619 2810 3064 3254 3508 3762 1.11

1305 1394 1495 1622 1749 1876 2003 2130 2257 2410 2562 2714 2892 3083 3273 3527 3718 3972 4226 1.12

1272 1361 1462 1589 1716 1843 1970 2097 2224 2377 2529 2681 2859 3050 3240 3494 3685 3939 4193 1.12

1254 1343 1445 1572 1699 1826 1953 2080 2207 2359 2512 2664 2842 3032 3223 3477 3667 3921 4175 1.12

1215 1304 1406 1533 1660 1787 1914 2041 2168 2320 2473 2625 2803 2993 3184 3438 3628 3882 4136 1.12

1194 1283 1384 1511 1638 1765 1892 2019 2146 2299 2451 2603 2781 2972 3162 3416 3607 3861 4115 1.12

1171 1260 1362 1489 1616 1743 1870 1997 2124 2276 2429 2581 2759 2949 3140 3394 3584 3838 4092 1.12

1320 1409 1511 1638 1765 1892 2019 2146 2273 2425 2578 2730 2908 3098 3289 3543 3733 3987 4241 1.13

1144 1233 1334 1461 1588 1715 1842 1969 2096 2249 2401 2553 2731 2922 3112 3366 3557 3811 4065 1.13

1120 1209 1311 1438 1565 1692 1819 1946 2073 2225 2378 2530 2708 2898 3089 3343 3533 3787 4041 1.13

1061 1150 1252 1379 1506 1633 1760 1887 2014 2166 2319 2471 2649 2839 3030 3284 3474 3728 3982 1.13

994 1083 1185 1312 1439 1566 1693 1820 1947 2099 2252 2404 2582 2772 2963 3217 3407 3661 3915 1.13

920 1009 1110 1237 1364 1491 1618 1745 1872 2025 2177 2329 2507 2698 2888 3142 3333 3587 3841 1.13

1336 1425 1527 1654 1781 1908 2035 2162 2289 2441 2594 2746 2924 3114 3305 3559 3749 4003 4257 1.14

1297 1386 1487 1614 1741 1868 1995 2122 2249 2402 2554 2706 2884 3075 3265 3519 3710 3964 4218 1.18

1280 1369 1470 1597 1724 1851 1978 2105 2232 2385 2537 2689 2867 3058 3248 3502 3693 3947 4201 1.18

1262 1351 1453 1580 1707 1834 1961 2088 2215 2367 2520 2672 2850 3040 3231 3485 3675 3929 4183 1.18

1245 1334 1435 1562 1689 1816 1943 2070 2197 2350 2503 2655 2833 3023 3214 3468 3658 3912 4166 1.18

1224 1314 1415 1542 1669 1796 1923 2050 2177 2330 2482 2634 2812 3003 3193 3447 3638 3892 4146 1.18

1073 1162 1263 1390 1517 1644 1771 1898 2025 2178 2330 2482 2660 2851 3041 3295 3486 3740 3994 1.18

1313 1402 1503 1630 1757 1884 2011 2138 2265 2418 2570 2722 2900 3091 3281 3535 3726 3980 4234 1.19

1203 1292 1394 1521 1648 1775 1902 2029 2156 2308 2461 2613 2791 2981 3172 3426 3616 3870 4124 1.19

1182 1271 1373 1500 1627 1754 1881 2008 2135 2287 2440 2592 2770 2960 3151 3405 3595 3849 4103 1.19

1132 1221 1322 1449 1576 1703 1830 1957 2084 2237 2389 2541 2719 2910 3100 3354 3545 3799 4053 1.19

1328 1417 1519 1646 1773 1900 2027 2154 2281 2433 2586 2738 2916 3106 3297 3551 3741 3995 4249 1.20

1155 1244 1346 1473 1600 1727 1854 1981 2108 2260 2413 2565 2743 2933 3124 3378 3568 3822 4076 1.25

1305 1394 1495 1622 1749 1876 2003 2130 2257 2410 2562 2714 2892 3083 3273 3527 3718 3972 4226 1.25

1287 1376 1478 1605 1732 1859 1986 2113 2240 2392 2545 2697 2875 3065 3256 3510 3700 3954 4208 1.25

1270 1359 1461 1588 1715 1842 1969 2096 2223 2375 2528 2680 2858 3048 3239 3493 3683 3937 4191 1.25

1253 1342 1443 1570 1697 1824 1951 2078 2205 2358 2510 2662 2840 3031 3221 3475 3666 3920 4174 1.25

1234 1323 1424 1551 1678 1805 1932 2059 2186 2339 2491 2643 2821 3012 3202 3456 3647 3901 4155 1.25

1213 1302 1403 1530 1657 1784 1911 2038 2165 2318 2470 2622 2800 2991 3181 3435 3626 3880 4134 1.25

1191 1280 1382 1509 1636 1763 1890 2017 2144 2296 2449 2601 2779 2970 3160 3414 3605 3859 4113 1.25

879 968 1070 1197 1324 1451 1578 1705 1832 1985 2138 2290 2468 2658 2849 3103 3293 3547 3801 1.25

1143 1232 1334 1461 1588 1715 1842 1969 2096 2249 2401 2553 2731 2922 3112 3366 3557 3811 4065 1.26

697 786 888 1015 1143 1270 1397 1524 1651 1804 1956 2108 2287 2477 2668 2922 3112 3366 3620 1.26

1320 1409 1511 1638 1765 1892 2019 2146 2273 2425 2578 2730 2908 3098 3289 3543 3733 3987 4241 1.27

2

Design

2-50

Drive Selection Table

2

Design

5V•5VX (SR = 1.27 ~ 1.87)

Table 2-42-2

Drive Selection Table

Speed ratio

Effective diameter

(mm)

5V

Small pulley Large pulley

500

1.27 236 300 -

1.27 280

1.27 315

1.27 355

1.32 170

1.32 180

1.32 190

355

400

450

224

236

250

-

-

5V

530

-

-

-

5V

560

-

-

5V

600

-

-

5V

630

-

-

5V

670

Center distance (mm)

5V

710

5V

750

5V

800

5V

850

5V

900

5V

950

5V

1000

5V

1060

5V

1120

5V

1180

350 401 452 516 580 643 707 770 846 923 999

389 452 516 580 644 707 783 860 936

445 509 572 636 712 789 865

324 363 401 452 490 541 591 642 706 770 833 897 960 1036 1113 1189

1.32 212

1.33 160

1.33 200

1.34 150

1.34 224

1.34 236

280

212

265

200

300

315

-

-

-

-

285 323 374 412 463 514 565 629 692 756 819 883 959 1036 1112

-

-

-

-

-

-

327 365 416 467 518 582 646 709 773 836 912 989 1065

-

-

-

361 412 463 527 591 655 718 782 858 934 1011

400 464 527 591 655 718 795 871 947

1.34 265

1.34 300

1.39 170

1.39 180

1.40 190

1.40 450

1.41 160

355

400

236

250

265

630

224

567 644

1.41 200

1.41 224

1.41 355

1.42 150

1.42 212

1.42 250

1.43 280

1.43 315

1.48 160

1.48 170

1.48 180

1.48 190

1.49 212

1.50 150

1.50 300

1.51 200

1.51 236

1.51 265

1.56 180

1.57 160

1.57 170

1.58 150

1.58 200

1.58 400

1.59 190

1.59 224

1.59 315

1.60 500

1.61 250

1.61 280

1.66 170

1.67 160

1.67 190

1.67 300

1.68 150

280

315

500

212

300

355

400

450

236

250

265

280

315

224

450

300

355

400

280

250

265

236

315

630

300

355

500

800

400

450

280

265

315

500

250

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

284 336 374 425 476 527 591 655 718 782 845 922 998 1074

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

466 530 594 671 747 824

321 372 423 474 538 602 666 729 793 869 946 1022

-

-

-

-

-

-

362 414 478 542 606 670 733 810 886 963

-

-

-

-

-

-

410 474 538 602 666 742 819 895

322 360 398 449 488 539 589 640 704 768 831 895 958 1034 1111 1187

420 485 549 613 677 753 830 906

330 382 433 485 549 612 676 740 804 880 956 1033

373 425 489 553 617 681 745 821 898 974

329 367 406 457 495 546 597 648 712 775 839 902 966 1042 1119 1195

-

-

-

-

-

-

-

-

-

-

603 680

283 321 373 411 463 514 565 629 692 756 820 883 960 1036 1112

-

-

-

-

-

-

-

-

300 339 391 442 493 557 621 685 749 813 889 966 1042

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

429 494 559 623 700 777 853

-

384 436 500 564 628 692 756 832 909 985

434 499 563 627 691 768 845 921

440 505 569 634 711 788 864

1.68 180

1.68 212

1.70 236

1.71 265

1.76 160

1.76 180

1.78 150

1.78 170

1.78 355

1.78 450

1.79 200

1.79 224

1.79 280

1.81 250

1.87 170

300

630

800

355

400

500

450

315

300

355

400

450

280

315

265

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

308 347 399 451 502 566 630 694 758 822 898 975 1051

-

-

-

-

-

-

-

342 393 445 510 574 638 702 766 842 919 996

-

-

-

-

-

380 445 510 574 638 702 779 856 932

-

-

-

-

-

-

-

-

-

-

-

555 634 712

-

317 356 408 459 511 575 639 703 767 830 907 984 1060

350 402 454 518 583 647 711 775 851 928 1005

-

-

-

-

-

-

-

-

-

-

-

454 519 584 648 725 802 879

390 455 520 585 649 713 790 867 943

283 322 374 413 464 515 567 631 695 759 822 886 962 1039 1115

2-51

Drive Selection Table

Color coding of Power rating correction factor : Kc

0.7

0.8

0.9

1.0

1.1

1.2

5V

5VX

1.27 ~ 1.87

Center distance (mm)

5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V

1250 1320 1400 1500 1600 1700 1800 1900 2000 2120 2240 2360 2500 2650 2800 3000 3150 3350 3550

Speed ratio

1166 1255 1357 1484 1611 1738 1865 1992 2119 2271 2424 2576 2754 2944 3135 3389 3579 3833 4087 1.27

1088 1177 1279 1406 1533 1660 1787 1914 2041 2193 2346 2498 2676 2867 3057 3311 3502 3756 4010 1.27

1025 1114 1216 1343 1470 1597 1724 1851 1978 2131 2283 2435 2613 2804 2994 3248 3439 3693 3947 1.27

954 1043 1145 1272 1399 1526 1653 1780 1907 2060 2212 2364 2542 2733 2923 3177 3368 3622 3876 1.27

1278 1367 1468 1595 1722 1849 1976 2103 2230 2383 2535 2687 2865 3056 3246 3500 3691 3945 4199 1.32

1260 1349 1451 1578 1705 1832 1959 2086 2213 2366 2518 2670 2848 3039 3229 3483 3674 3928 4182 1.32

1242 1331 1432 1559 1686 1813 1940 2067 2194 2347 2499 2651 2829 3020 3210 3464 3655 3909 4163 1.32

1201 1290 1391 1518 1645 1772 1899 2026 2153 2306 2458 2610 2788 2979 3169 3423 3614 3868 4122 1.32

1295 1384 1486 1613 1740 1867 1994 2121 2248 2400 2553 2705 2883 3073 3264 3518 3708 3962 4216 1.33

1222 1311 1412 1539 1666 1793 1921 2048 2175 2327 2480 2632 2810 3000 3191 3445 3635 3889 4143 1.33

1312 1401 1503 1630 1757 1884 2011 2138 2265 2417 2570 2722 2900 3091 3281 3535 3726 3980 4234 1.34

1175 1264 1366 1493 1620 1747 1874 2001 2128 2281 2433 2585 2763 2954 3144 3398 3589 3843 4097 1.34

1154 1243 1345 1472 1599 1726 1853 1980 2107 2259 2412 2564 2742 2932 3123 3377 3568 3822 4076 1.34

1100 1189 1290 1417 1544 1671 1798 1926 2053 2205 2358 2510 2688 2878 3069 3323 3513 3767 4021 1.34

1037 1126 1227 1354 1481 1608 1736 1863 1990 2142 2295 2447 2625 2815 3006 3260 3450 3704 3958 1.34

1268 1357 1459 1586 1713 1840 1967 2094 2221 2373 2526 2678 2856 3046 3237 3491 3681 3935 4189 1.39

1249 1338 1440 1567 1694 1821 1948 2075 2202 2355 2507 2659 2837 3028 3218 3472 3663 3917 4171 1.39

1230 1319 1420 1547 1674 1801 1928 2055 2182 2335 2487 2639 2817 3008 3198 3452 3643 3897 4151 1.40

734 823 925 1053 1180 1308 1435 1562 1689 1842 1995 2147 2325 2516 2706 2960 3151 3405 3659 1.40

1286 1375 1476 1603 1730 1857 1984 2111 2238 2391 2543 2695 2873 3064 3254 3508 3699 3953 4207 1.41

1210 1299 1400 1527 1655 1782 1909 2036 2163 2315 2468 2620 2798 2988 3179 3433 3623 3877 4131 1.41

1163 1252 1354 1481 1608 1735 1862 1989 2116 2269 2421 2573 2751 2942 3132 3386 3577 3831 4085 1.41

913 1002 1104 1231 1359 1486 1613 1740 1867 2020 2172 2324 2502 2693 2884 3138 3328 3582 3836 1.41

1303 1392 1493 1620 1747 1874 2001 2128 2255 2408 2560 2713 2891 3081 3272 3526 3716 3970 4224 1.42

1185 1274 1375 1502 1629 1756 1883 2010 2137 2290 2442 2595 2773 2963 3154 3408 3598 3852 4106 1.42

1111 1200 1302 1429 1556 1683 1810 1937 2064 2217 2369 2521 2699 2890 3080 3334 3525 3779 4033 1.42

1052 1141 1242 1370 1497 1624 1751 1878 2005 2158 2310 2462 2640 2831 3021 3275 3466 3720 3974 1.43

984 1074 1175 1302 1430 1557 1684 1811 1938 2091 2243 2395 2573 2764 2954 3208 3399 3653 3907 1.43

1276 1365 1466 1594 1721 1848 1975 2102 2229 2381 2534 2686 2864 3054 3245 3499 3689 3943 4197 1.48

1257 1346 1448 1575 1702 1829 1956 2083 2210 2362 2515 2667 2845 3035 3226 3480 3670 3924 4178 1.48

1237 1326 1428 1555 1682 1809 1936 2063 2190 2343 2495 2647 2825 3016 3206 3460 3651 3905 4159 1.48

1218 1307 1408 1535 1662 1789 1916 2043 2170 2323 2475 2627 2806 2996 3187 3441 3631 3885 4139 1.48

1172 1262 1363 1490 1617 1744 1871 1998 2125 2278 2431 2583 2761 2951 3142 3396 3586 3840 4094 1.49

1293 1382 1484 1611 1738 1865 1992 2119 2246 2398 2551 2703 2881 3072 3262 3516 3707 3961 4215 1.50

996 1085 1187 1314 1441 1568 1695 1822 1950 2102 2255 2407 2585 2775 2966 3220 3411 3665 3919 1.50

1194 1283 1384 1511 1639 1766 1893 2020 2147 2299 2452 2604 2782 2972 3163 3417 3607 3861 4115 1.51

1122 1211 1312 1440 1567 1694 1821 1948 2075 2228 2380 2532 2710 2901 3091 3345 3536 3790 4044 1.51

1063 1152 1254 1381 1508 1635 1762 1890 2017 2169 2322 2474 2652 2842 3033 3287 3478 3732 3986 1.51

1225 1314 1416 1543 1670 1797 1924 2051 2178 2331 2483 2635 2813 3004 3194 3448 3639 3893 4147 1.56

1265 1354 1455 1582 1709 1836 1963 2091 2218 2370 2523 2675 2853 3043 3234 3488 3678 3932 4186 1.57

1245 1334 1436 1563 1690 1817 1944 2071 2198 2350 2503 2655 2833 3023 3214 3468 3659 3913 4167 1.57

1284 1373 1474 1601 1728 1855 1982 2109 2236 2389 2541 2693 2872 3062 3253 3507 3697 3951 4205 1.58

1182 1271 1372 1499 1627 1754 1881 2008 2135 2287 2440 2592 2770 2960 3151 3405 3596 3850 4104 1.58

770 860 962 1090 1218 1345 1473 1600 1727 1880 2033 2185 2363 2554 2745 2999 3189 3444 3698 1.58

1201 1290 1392 1519 1646 1773 1900 2027 2154 2307 2460 2612 2790 2980 3171 3425 3615 3869 4123 1.59

1131 1220 1322 1449 1576 1703 1830 1957 2084 2237 2389 2541 2719 2910 3101 3355 3545 3799 4053 1.59

943 1032 1134 1262 1389 1516 1643 1770 1898 2050 2203 2355 2533 2724 2914 3169 3359 3613 3867 1.59

742 871 1000 1128 1256 1384 1512 1665 1818 1970 2149 2340 2531 2785 2976 3230 3484 1.60

1074 1164 1265 1392 1520 1647 1774 1901 2028 2181 2333 2485 2663 2854 3045 3299 3489 3743 3997 1.61

1011 1100 1202 1329 1456 1583 1711 1838 1965 2117 2270 2422 2600 2791 2981 3236 3426 3680 3934 1.61

1233 1322 1424 1551 1678 1805 1932 2059 2186 2338 2491 2643 2821 3012 3202 3456 3647 3901 4155 1.66

1253 1342 1443 1570 1697 1824 1951 2079 2206 2358 2511 2663 2841 3031 3222 3476 3666 3920 4174 1.67

1189 1278 1380 1507 1634 1761 1888 2015 2142 2295 2448 2600 2778 2968 3159 3413 3603 3857 4111 1.67

954 1043 1145 1273 1400 1527 1655 1782 1909 2062 2214 2367 2545 2735 2926 3180 3371 3625 3879 1.67

1272 1361 1463 1590 1717 1844 1971 2098 2225 2378 2530 2682 2860 3051 3241 3495 3686 3940 4194 1.68

1209 1298 1400 1527 1654 1781 1908 2035 2162 2315 2467 2619 2797 2988 3178 3432 3623 3877 4131 1.68

1140 1229 1331 1458 1585 1712 1839 1966 2093 2246 2399 2551 2729 2919 3110 3364 3554 3809 4063 1.68

1085 1174 1276 1403 1530 1657 1785 1912 2039 2191 2344 2496 2674 2865 3055 3309 3500 3754 4008 1.70

1022 1111 1213 1340 1468 1595 1722 1849 1976 2129 2282 2434 2612 2802 2993 3247 3438 3692 3946 1.71

1240 1330 1431 1558 1685 1812 1939 2067 2194 2346 2499 2651 2829 3019 3210 3464 3654 3908 4162 1.76

1197 1286 1388 1515 1642 1769 1896 2023 2150 2303 2455 2607 2785 2976 3167 3421 3611 3865 4119 1.76

1260 1349 1451 1578 1705 1832 1959 2086 2213 2366 2518 2670 2848 3039 3230 3484 3674 3928 4182 1.78

1217 1306 1407 1534 1662 1789 1916 2043 2170 2322 2475 2627 2805 2996 3186 3440 3631 3885 4139 1.78

802 892 995 1123 1251 1379 1506 1634 1761 1914 2067 2219 2397 2588 2779 3033 3224 3478 3732 1.78

672 777 906 1035 1164 1292 1420 1548 1702 1855 2008 2186 2377 2568 2823 3014 3268 3522 1.78

1149 1238 1340 1467 1594 1721 1848 1976 2103 2255 2408 2560 2738 2929 3119 3373 3564 3818 4072 1.79

1094 1183 1285 1412 1539 1667 1794 1921 2048 2201 2353 2505 2683 2874 3065 3319 3509 3763 4017 1.79

969 1058 1160 1288 1415 1542 1670 1797 1924 2077 2230 2382 2560 2751 2941 3195 3386 3640 3894 1.79

1033 1122 1224 1352 1479 1606 1733 1861 1988 2140 2293 2445 2623 2814 3005 3259 3449 3703 3957 1.81

1204 1294 1395 1522 1649 1777 1904 2031 2158 2310 2463 2615 2793 2984 3174 3428 3619 3873 4127 1.87

2

Design

2-52

Drive Selection Table

2

Design

5V•5VX (SR = 1.88 ~ 3.80)

Table 2-42-3

Drive Selection Table

2.54 250

2.55 315

2.65 190

2.67 170

2.68 300

2.69 236

2.70 150

2.79 450

2.80 180

2.83 224

2.83 355

2.54 160

2.87 280

2.97 170

3.00 212

3.04 150

3.04 265

3.14 400

3.16 160

3.18 200

3.19 315

3.22 250

3.35 190

3.35 300

3.37 150

3.42 236

3.54 180

3.54 355

3.60 224

3.60 280

3.75 170

3.80 265

Speed ratio

Effective diameter

(mm)

5V

Small pulley Large pulley

500

1.88 150 280

1.88 190

1.89 160

1.90 212

1.90 265

1.92 236

1.98 160

355

300

400

500

450

315

-

-

-

1.99 180

2.01 200

2.01 250

2.01 315

2.01 400

2.01 500

355

400

500

630

800

1000

-

-

-

-

-

-

2.02 150

2.02 224

2.11 170

2.11 300

2.12 150

2.12 190

2.13 236

2.14 212

2.23 450

2.24 160

2.24 180

2.25 224

2.26 280

2.26 355

2.27 200

2.37 170

2.38 212

2.39 150

2.39 190

2.39 265

2.51 400

2.51 500

2.52 160

2.52 180

2.52 200

300

450

355

630

315

400

500

450

1000

355

400

500

630

800

450

400

500

355

450

630

1000

1250

400

450

500

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

500

800

630

1250

800

1000

630

1000

1250

500

630

1000

800

630

1000

630

800

500

450

800

630

400

1250

500

630

1000

450

800

500

630

450

800

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

5V

530

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

5V

560

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

5V

600

5V

630

5V

670

Center distance (mm)

5V

710

5V

750

5V

800

5V

850

5V

900

5V 5V 5V 5V 5V

950 1000 1060 1120 1180

323 363 415 466 518 582 646 710 774 838 914 991 1067

-

-

-

-

-

-

358 410 462 527 591 656 720 784 860 937 1013

-

-

-

398 464 529 594 659 736 813 890

399 465 530 595 659 723 800 877 954

330 369 422 473 525 589 653 717 781 845 922 998 1075

313 366 418 471 535 600 664 728 792 869 946 1022

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

408 474 539 605 669 746 824 901

-

-

-

-

-

-

-

-

-

-

-

503 583 662 740

-

-

-

-

-

-

-

-

354 407 473 538 603 668 732 809 886 963

513 593 672 750

-

-

-

-

-

-

-

-

-

-

319 373 425 478 542 607 671 736 800 876 953 1030

-

-

-

-

-

-

417 483 549 614 679 756 834 911

362 416 481 547 611 676 741 817 895 971

-

326 380 432 484 549 614 679 743 807 884 961 1037

425 491 557 623 688 765 843 920

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

526 606 685 764

-

370 424 490 555 620 685 749 826 903 980

332 386 439 491 556 621 686 750 814 891 968 1044

433 500 565 631 696 773 851 928

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

376 430 496 562 627 692 756 833 911 987

-

-

-

-

-

-

-

-

-

-

-

-

-

468 536 616 696 774

-

-

-

-

-

-

-

-

-

-

298 339 393 446 498 563 628 693 757 821 898 975 1052

328 383 437 503 569 634 699 763 840 918 995

373 441 508 574 639 704 782 860 937

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

478 546 626 706 784

571

379 447 514 580 646 711 789 867 944

335 389 443 510 576 641 706 770 847 925 1002

-

-

-

-

-

-

-

-

-

-

-

581

486 555 635 715 794

304 345 399 452 505 570 635 700 764 829 905 983 1059

-

-

-

-

-

-

-

-

385 454 521 587 653 718 796 874 951

494 563 643 723 802

-

-

-

-

-

-

-

-

341 396 450 517 582 648 713 777 855 932 1009

-

-

-

-

-

593

392 460 527 594 660 725 803 881 958

431 502 570 651 731 810

347 402 457 523 589 655 720 784 862 939 1016

603

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

341 398 467 534 601 666 732 810 888 965

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

438 509 578 659 739 818

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

612

445 516 585 666 746 825

-

347 404 473 541 607 673 739 817 895 972

-

-

-

-

-

-

-

534 621

451 522 591 672 753 832

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

542 628

-

-

-

-

-

-

-

-

-

-

457 528 597 679 759 839

-

2-53

Drive Selection Table

Color coding of Power rating correction factor : Kc

0.7

0.8

0.9

1.0

1.1

1.2

5V

5VX

1.88 ~ 3.80

Center distance (mm)

5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V

1250 1320 1400 1500 1600 1700 1800 1900 2000 2120 2240 2360 2500 2650 2800 3000 3150 3350 3550

Speed ratio

1248 1337 1439 1566 1693 1820 1947 2074 2201 2354 2506 2658 2837 3027 3218 3472 3662 3916 4170 1.88

1157 1246 1347 1475 1602 1729 1856 1983 2110 2263 2416 2568 2746 2936 3127 3381 3572 3826 4080 1.88

1224 1313 1415 1542 1669 1796 1923 2051 2178 2330 2483 2635 2813 3003 3194 3448 3639 3893 4147 1.89

1103 1192 1294 1421 1548 1676 1803 1930 2057 2210 2362 2515 2693 2883 3074 3328 3519 3773 4027 1.90

980 1069 1171 1299 1426 1554 1681 1808 1936 2088 2241 2393 2571 2762 2953 3207 3398 3652 3906 1.90

1043 1133 1235 1362 1489 1617 1744 1871 1998 2151 2304 2456 2634 2825 3015 3269 3460 3714 3968 1.92

1212 1301 1403 1530 1657 1784 1911 2038 2166 2318 2471 2623 2801 2991 3182 3436 3627 3881 4135 1.98

1164 1253 1355 1482 1609 1737 1864 1991 2118 2271 2423 2575 2753 2944 3135 3389 3579 3833 4087 1.99

1112 1201 1303 1430 1558 1685 1812 1939 2066 2219 2372 2524 2702 2893 3083 3337 3528 3782 4036 2.01

991 1080 1182 1310 1438 1565 1692 1820 1947 2100 2252 2405 2583 2774 2964 3219 3409 3663 3917 2.01

830 921 1024 1152 1280 1408 1536 1663 1791 1944 2097 2249 2428 2619 2809 3064 3254 3509 3763 2.01

612 706 811 941 1071 1200 1328 1457 1585 1739 1892 2045 2224 2415 2606 2861 3051 3306 3560 2.01

816 948 1079 1209 1339 1493 1648 1802 1981 2173 2365 2620 2811 3066 3321 2.01

1232 1321 1423 1550 1677 1804 1931 2058 2185 2338 2490 2643 2821 3011 3202 3456 3646 3900 4154 2.02

1052 1142 1244 1371 1498 1626 1753 1880 2007 2160 2313 2465 2643 2834 3025 3279 3469 3723 3978 2.02

1172 1261 1363 1490 1617 1744 1871 1999 2126 2278 2431 2583 2761 2952 3142 3396 3587 3841 4095 2.11

841 931 1034 1163 1291 1419 1547 1674 1802 1955 2108 2261 2439 2630 2821 3075 3266 3520 3774 2.11

1219 1309 1410 1538 1665 1792 1919 2046 2173 2326 2478 2630 2809 2999 3190 3444 3634 3888 4142 2.12

1119 1209 1310 1438 1565 1692 1820 1947 2074 2227 2379 2531 2710 2900 3091 3345 3536 3790 4044 2.12

1001 1090 1193 1320 1448 1575 1703 1830 1957 2110 2263 2415 2594 2784 2975 3229 3420 3674 3928 2.13

1061 1150 1252 1380 1507 1635 1762 1889 2017 2169 2322 2474 2652 2843 3034 3288 3479 3733 3987 2.14

849 982 1113 1244 1374 1529 1684 1838 2017 2210 2401 2657 2848 3103 3358 2.23

1179 1268 1370 1497 1625 1752 1879 2006 2133 2286 2439 2591 2769 2959 3150 3404 3595 3849 4103 2.24

1127 1216 1318 1445 1573 1700 1827 1954 2082 2234 2387 2539 2717 2908 3099 3353 3543 3797 4051 2.24

1009 1099 1201 1329 1457 1584 1712 1839 1967 2119 2272 2424 2603 2793 2984 3238 3429 3683 3937 2.25

855 946 1049 1177 1306 1434 1561 1689 1817 1970 2123 2276 2454 2645 2836 3090 3281 3535 3790 2.26

642 736 841 972 1102 1232 1361 1489 1618 1771 1925 2078 2257 2448 2639 2894 3085 3340 3594 2.26

1070 1159 1261 1389 1516 1644 1771 1898 2026 2178 2331 2483 2662 2852 3043 3297 3488 3742 3996 2.27

1134 1223 1325 1453 1580 1707 1835 1962 2089 2242 2395 2547 2725 2916 3106 3360 3551 3805 4059 2.37

1018 1108 1210 1338 1466 1593 1721 1848 1976 2128 2281 2434 2612 2803 2993 3248 3438 3692 3947 2.38

1186 1276 1378 1505 1632 1759 1887 2014 2141 2294 2446 2598 2776 2967 3158 3412 3602 3857 4111 2.39

1077 1167 1269 1396 1524 1651 1779 1906 2033 2186 2339 2491 2669 2860 3051 3305 3495 3750 4004 2.39

865 956 1059 1188 1316 1445 1572 1700 1828 1981 2134 2287 2465 2656 2847 3102 3293 3547 3801 2.39

745 881 1015 1147 1278 1408 1564 1719 1873 2054 2246 2438 2694 2885 3141 3396 2.51

966 1102 1262 1421 1578 1761 1955 2149 2406 2599 2855 3111 2.51

1141 1231 1333 1460 1588 1715 1842 1970 2097 2249 2402 2554 2733 2923 3114 3368 3559 3813 4067 2.52

1084 1174 1276 1404 1531 1659 1786 1913 2041 2194 2346 2499 2677 2868 3058 3312 3503 3757 4011 2.52

1027 1117 1219 1347 1475 1602 1730 1857 1985 2137 2290 2443 2621 2812 3002 3257 3447 3702 3956 2.52

876 967 1070 1199 1327 1455 1583 1711 1839 1992 2145 2298 2477 2668 2859 3113 3304 3558 3813 2.54

668 762 868 1000 1130 1260 1389 1518 1646 1800 1954 2107 2286 2478 2669 2924 3115 3370 3625 2.55

1034 1124 1226 1354 1482 1610 1737 1865 1992 2145 2298 2450 2629 2819 3010 3264 3455 3709 3964 2.65

1092 1181 1283 1411 1539 1666 1794 1921 2048 2201 2354 2506 2684 2875 3066 3320 3511 3765 4019 2.67

677 772 878 1010 1141 1270 1400 1529 1657 1811 1965 2118 2297 2489 2680 2935 3127 3381 3636 2.68

885 976 1080 1209 1337 1466 1594 1722 1849 2003 2156 2308 2487 2678 2869 3124 3314 3569 3823 2.69

1149 1238 1340 1468 1595 1722 1850 1977 2104 2257 2410 2562 2740 2931 3122 3376 3566 3820 4075 2.70

998 1134 1296 1455 1612 1795 1990 2184 2442 2635 2892 3148 2.79

1041 1131 1234 1362 1489 1617 1745 1872 2000 2152 2305 2458 2636 2827 3018 3272 3463 3717 3971 2.80

894 985 1088 1217 1346 1474 1602 1730 1858 2012 2165 2317 2496 2687 2878 3133 3324 3578 3832 2.83

774 911 1045 1178 1309 1440 1596 1751 1905 2086 2278 2471 2727 2918 3174 3429 2.83

1099 1189 1291 1418 1546 1674 1801 1928 2056 2209 2361 2514 2692 2883 3073 3328 3518 3773 4027 2.54

690 785 892 1024 1154 1284 1414 1543 1672 1826 1980 2133 2312 2504 2695 2950 3142 3396 3651 2.87

1048 1138 1241 1369 1497 1624 1752 1880 2007 2160 2313 2465 2644 2834 3025 3280 3470 3725 3979 2.97

902 993 1097 1226 1355 1483 1611 1739 1867 2020 2174 2326 2505 2696 2887 3142 3333 3587 3842 3.00

1106 1196 1298 1426 1554 1681 1809 1936 2063 2216 2369 2521 2700 2890 3081 3335 3526 3780 4034 3.04

700 795 902 1034 1165 1295 1424 1554 1682 1837 1991 2144 2323 2515 2706 2961 3153 3408 3662 3.04

888 1029 1167 1329 1488 1646 1830 2025 2219 2478 2671 2928 3184 3.14

1055 1146 1248 1376 1504 1632 1759 1887 2014 2167 2320 2473 2651 2842 3033 3287 3478 3732 3987 3.16

910 1002 1105 1234 1363 1492 1620 1748 1876 2029 2183 2335 2514 2705 2896 3151 3342 3596 3851 3.18

799 937 1071 1205 1336 1467 1624 1779 1934 2114 2307 2500 2756 2948 3203 3459 3.19

710 805 912 1044 1175 1305 1435 1564 1693 1847 2001 2155 2334 2526 2717 2973 3164 3419 3674 3.22

917 1008 1112 1241 1370 1499 1627 1755 1883 2037 2190 2343 2521 2713 2904 3158 3349 3604 3858 3.35

665 808 946 1081 1215 1346 1478 1634 1790 1944 2125 2318 2511 2767 2959 3214 3470 3.35

1063 1153 1255 1383 1511 1639 1767 1894 2022 2175 2328 2480 2659 2850 3040 3295 3486 3740 3994 3.37

718 814 921 1054 1185 1315 1445 1574 1703 1857 2012 2165 2344 2536 2728 2983 3174 3429 3684 3.42

924 1015 1119 1249 1377 1506 1634 1762 1890 2044 2197 2350 2529 2720 2911 3166 3357 3611 3866 3.54

916 1058 1196 1358 1518 1677 1861 2056 2251 2510 2703 2960 3217 3.54

726 822 929 1062 1193 1323 1453 1583 1712 1866 2020 2174 2353 2545 2737 2992 3183 3438 3693 3.60

677 821 959 1094 1228 1360 1491 1648 1804 1959 2139 2332 2525 2781 2973 3229 3485 3.60

931 1022 1126 1256 1385 1513 1642 1770 1898 2051 2205 2357 2536 2727 2919 3173 3364 3619 3873 3.75

686 830 969 1104 1238 1370 1501 1658 1814 1969 2150 2343 2536 2792 2984 3240 3496 3.80

2

Design

2-54

Drive Selection Table

2

Design

5V•5VX (SR =3.81 ~ 8.46)

Table 2-42-4

Drive Selection Table

Speed ratio

Effective diameter

(mm)

5V

Small pulley Large pulley

500

1.00 300 300 -

1.00 315

1.00 335

1.00 355

1.00 375

1.00 400

1.00 425

315

335

355

375

400

425

-

-

-

-

-

-

1.00 450

1.00 475

1.00 500

1.00 560

1.00 630

1.00 710

450

475

500

560

630

710

-

-

-

-

-

-

1.00 800

1.05 300

1.05 475

1.06 315

1.06 335

1.06 355

1.06 400

1.06 425

1.06 450

1.07 375

1.11 450

1.12 300

1.12 335

1.12 425

1.12 500

1.13 315

1.13 355

1.13 400

1.13 560

1.44 315

450

475

400

500

335

375

475

560

355

400

450

630

450

800

315

500

335

355

375

425

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

5V

530

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

5V

560

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

5V

630

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

5V

600

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

5V

670

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

Center distance (mm)

5V

710

-

5V

750

-

5V

800

-

5V

850

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

5V

900

-

5V 5V 5V 5V 5V

950 1000 1060 1120 1180

549 636

463 534 604 685 766 845

-

-

-

-

-

-

-

-

-

556 643

-

469 541 610 692 773 852

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

562 649

-

568 656

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

574 662

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

580 668

-

-

-

493 586 674

-

-

-

-

-

-

-

2-55

Drive Selection Table

Color coding of Power rating correction factor : Kc

0.7

0.8

0.9

1.0

1.1

1.2

5V

5VX

3.81 ~ 8.46

Center distance (mm)

5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V 5V

1250 1320 1400 1500 1600 1700 1800 1900 2000 2120 2240 2360 2500 2650 2800 3000 3150 3350 3550

Speed ratio

734 830 937 1070 1201 1332 1462 1591 1720 1875 2029 2182 2362 2554 2745 3001 3192 3447 3702 3.81

938 1029 1133 1263 1392 1520 1649 1777 1905 2059 2212 2365 2544 2735 2926 3181 3372 3626 3881 3.99

941 1083 1221 1384 1545 1704 1888 2084 2279 2538 2731 2989 3246 3.99

695 839 978 1114 1248 1380 1512 1669 1825 1980 2161 2354 2547 2803 2995 3251 3507 4.03

741 837 945 1078 1209 1340 1470 1599 1729 1883 2038 2191 2371 2563 2754 3010 3201 3456 3711 4.04

801 950 1092 1231 1394 1555 1714 1898 2094 2289 2548 2742 3000 3256 4.19

944 1036 1140 1270 1399 1528 1656 1784 1912 2066 2219 2372 2551 2742 2934 3188 3379 3634 3888 4.26

748 844 952 1085 1216 1347 1477 1607 1736 1890 2045 2198 2378 2570 2762 3017 3208 3464 3718 4.26

704 848 987 1123 1257 1390 1521 1678 1834 1990 2171 2364 2557 2813 3005 3261 3517 4.27

754 850 958 1091 1223 1354 1484 1614 1743 1897 2052 2206 2385 2577 2769 3024 3216 3471 3726 4.49

-

-

-

-

-

-

711 856 995 1131 1265 1398 1529 1687 1843 1998 2179 2372 2565 2822 3014 3270 3526 4.50

813 962 1105 1244 1407 1568 1727 1912 2108 2303 2562 2756 3014 3271 4.50

821 971 1114 1253 1417 1578 1737 1922 2118 2314 2573 2767 3025 3282 4.75

760 857 965 1098 1230 1361 1491 1621 1750 1905 2059 2213 2392 2584 2776 3032 3223 3478 3733 4.76

718 863 1003 1139 1273 1406 1538 1695 1851 2006 2188 2381 2574 2831 3023 3279 3535 4.76

-

-

-

830 980 1124 1263 1427 1588 1747 1932 2129 2324 2584 2777 3035 3292 5.04

725 871 1010 1147 1281 1414 1546 1703 1859 2015 2196 2390 2583 2839 3032 3288 3543 5.05

767 863 971 1105 1237 1368 1498 1628 1757 1912 2066 2220 2400 2592 2784 3039 3231 3486 3741 5.07

-

607 731 877 1017 1153 1288 1421 1553 1710 1866 2022 2203 2397 2590 2847 3039 3295 3551 5.32

839 989 1132 1272 1436 1597 1757 1942 2138 2334 2593 2787 3045 3302 5.34

-

-

-

-

-

-

-

-

-

773 870 978 1111 1243 1374 1505 1635 1764 1919 2073 2227 2407 2599 2791 3047 3238 3493 3748 5.41

613 737 883 1023 1160 1294 1427 1559 1717 1873 2029 2210 2404 2597 2854 3046 3302 3558 5.62

-

846 996 1140 1279 1444 1605 1765 1950 2147 2342 2602 2796 3054 3311 5.63

618 743 889 1029 1166 1301 1434 1566 1724 1880 2036 2217 2411 2604 2861 3053 3310 3565 5.96

-

-

-

-

-

-

-

853 1004 1147 1287 1451 1613 1773 1958 2155 2350 2610 2804 3062 3320 5.96

860 1011 1155 1295 1459 1621 1781 1966 2163 2359 2619 2813 3071 3328 6.32

624 749 895 1036 1173 1307 1441 1573 1730 1887 2043 2224 2418 2611 2868 3061 3317 3573 6.34

866 1017 1161 1301 1466 1628 1787 1973 2170 2366 2626 2820 3078 3335 6.66

630 755 902 1042 1179 1314 1447 1580 1737 1894 2050 2231 2425 2618 2875 3068 3324 3580 6.77

872 1023 1167 1307 1472 1634 1794 1980 2177 2373 2633 2827 3085 3343 7.03

-

-

-

-

-

-

-

-

-

878 1029 1173 1314 1479 1641 1801 1986 2183 2379 2639 2834 3092 3350 7.45

718 883 1035 1180 1320 1485 1647 1807 1993 2190 2386 2646 2841 3099 3357 7.93

723 889 1041 1186 1326 1492 1654 1814 2000 2197 2393 2653 2848 3106 3364 8.46

2

Design

2-56

Drive Selection Table

2

Design

8V (SR = 1.00 ~ 1.44)

Table 2-43-1

Drive Selection Table

Speed ratio

Effective diameter

(mm)

8V

Small pulley Large pulley

1000

1.00 300 300

8V

1060

8V

1120

8V

1180

8V

1250

8V

1320

Center distance (mm)

8V

1400

8V

1500

8V

1600

8V

1700

8V

1800

8V

1900

8V

2000

8V

2120

799 875 951 1027 1116 1205 1307 1434 1561 1688 1815 1942 2069 2221

1.00 315

1.00 335

1.00 355

1.00 375

1.00 400

1.00 425

315

335

355

375

400

425

775 851 928 1004 1093 1182 1283 1410 1537 1664 1791 1918 2045 2198

744 820 896 972 1061 1150 1252 1379 1506 1633 1760 1887 2014 2166

712 788 865 941 1030 1119 1220 1347 1474 1601 1728 1855 1982 2135

681 757 833 909 998 1087 1189 1316 1443 1570 1697 1824 1951 2103

642 718 794 870 959 1048 1150 1277 1404 1531 1658 1785 1912 2064

602 678 755 831 920 1009 1110 1237 1364 1491 1618 1745 1872 2025

1.00 450

1.00 475

1.00 500

1.00 560

1.00 630

1.00 710

450

475

500

560

630

710

-

-

-

-

-

-

-

-

-

-

-

-

-

787 863 939 1015 1104 1193 1295 1422 1549 1676 1803 1930 2057 2209

1.00 800

1.05 300

1.05 475

1.06 315

1.06 335

1.06 355

1.06 400

800

315

500

335

355

375

425

759 835 912 988 1077 1166 1267 1394 1521 1648 1775 1902 2029 2182

728 804 881 957 1046 1135 1236 1363 1490 1617 1744 1871 1998 2151

697 773 849 925 1014 1103 1205 1332 1459 1586 1713 1840 1967 2119

583 659 735 811 900 989 1091 1218 1345 1472 1599 1726 1853 2005 1.06 425

1.06 450

1.07 375

1.11 450

1.12 300

1.12 335

1.12 425

1.12 500

1.13 315

1.13 355

1.13 400

1.13 560

1.13 630

1.13 710

1.14 375

1.18 425

1.18 475

1.19 300

355

400

450

630

710

800

425

500

560

355

450

475

400

500

335

375

475

560

661 737 814 890 979 1068 1169 1296 1423 1550 1677 1804 1931 2084

771 847 924 1000 1089 1178 1279 1406 1533 1660 1787 1914 2041 2194

712 788 865 941 1030 1119 1220 1347 1474 1601 1728 1855 1982 2135

-

744 820 896 972 1061 1150 1252 1379 1506 1633 1760 1887 2014 2166

677 753 829 905 994 1083 1185 1312 1439 1566 1693 1820 1947 2099

602 678 754 831 920 1009 1110 1237 1364 1491 1618 1745 1872 2025

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

641 717 794 870 959 1048 1149 1276 1403 1530 1657 1785 1912 2064

-

755 831 908 984 1073 1162 1263 1390 1517 1644 1771 1898 2025 2178

727 804 880 956 1045 1134 1236 1363 1490 1617 1744 1871 1998 2150 1.19 315

1.19 400

1.20 335

1.20 355

1.20 375

1.25 300

1.25 400

1.25 450

1.25 800

1.26 500

1.27 315

1.27 335

1.27 355

1.27 375

1.27 560

1.27 630

1.32 425

375

475

400

425

450

375

500

560

1000

630

400

425

450

475

710

800

560

692 768 845 921 1010 1099 1200 1327 1454 1581 1708 1835 1962 2115

656 733 809 885 974 1063 1165 1292 1419 1546 1673 1800 1927 2080

739 815 892 968 1057 1146 1247 1374 1501 1628 1755 1882 2010 2162

-

-

-

-

-

-

-

-

-

707 783 860 936 1025 1114 1216 1343 1470 1597 1724 1851 1978 2131

672 748 824 900 990 1079 1180 1307 1434 1561 1688 1816 1943 2095

636 712 789 865 954 1043 1145 1272 1399 1526 1653 1780 1907 2060

600 677 753 829 919 1008 1109 1236 1363 1491 1618 1745 1872 2024

-

-

-

718 795 871 947 1037 1126 1227 1354 1481 1608 1736 1863 1990 2142

615 692 768 844 934 1023 1125 1252 1379 1506 1633 1760 1887 2040

1.33 475

1.34 300

1.34 355

1.34 375

1.35 315

1.35 335

1.40 450

1.41 355

1.41 400

1.41 710

1.42 300

1.42 335

1.42 500

1.43 560

1.44 315

500

560

1000

425

475

710

800

450

630

400

475

500

425

450

630

687 763 840 916 1005 1094 1196 1323 1450 1577 1704 1831 1958 2111

651 727 804 880 969 1058 1160 1287 1414 1541 1668 1796 1923 2075

594 671 747 824 913 1002 1104 1231 1359 1486 1613 1740 1867 2020

-

-

698 774 851 927 1016 1105 1207 1334 1461 1588 1715 1843 1970 2122

630 706 783 859 949 1038 1140 1267 1394 1521 1648 1775 1903 2055

-

-

-

-

-

-

-

-

-

-

-

-

-

-

700 828 956 1084 1212 1339 1467 1620

2-57

Drive Selection Table

Color coding of Power rating correction factor : Kc

0.7

0.8

0.9

1.0

1.1

1.2

8V

1.00 ~ 1.44

8V

2240

8V

2360

8V

2500

8V

2650

8V

2800

8V

3000

8V

3150

Center distance (mm)

8V

3350

8V

3550

8V

3750

8V

4000

8V

4250

8V

4500

8V

4750

8V

5000

8V

5600

Speed ratio

2374 2526 2704 2894 3085 3339 3529 3783 4037 4291 4609 4926 5244 5561 5879 6641 1.00

2350 2502 2680 2871 3061 3315 3506 3760 4014 4268 4585 4903 5220 5538 5855 6617 1.00

2319 2471 2649 2839 3030 3284 3474 3728 3982 4236 4554 4871 5189 5506 5824 6586 1.00

2287 2439 2617 2808 2998 3252 3443 3697 3951 4205 4522 4840 5157 5475 5792 6554 1.00

2256 2408 2586 2776 2967 3221 3411 3665 3919 4173 4491 4808 5126 5443 5761 6523 1.00

2217 2369 2547 2737 2928 3182 3372 3626 3880 4134 4452 4769 5087 5404 5722 6484 1.00

2177 2329 2507 2698 2888 3142 3333 3587 3841 4095 4412 4730 5047 5365 5682 6444 1.00

2138 2290 2468 2659 2849 3103 3294 3548 3802 4056 4373 4691 5008 5326 5643 6405 1.00

2099 2251 2429 2619 2810 3064 3254 3508 3762 4016 4334 4651 4969 5286 5604 6366 1.00

2060 2212 2390 2580 2771 3025 3215 3469 3723 3977 4295 4612 4930 5247 5565 6327 1.00

1965 2117 2295 2486 2676 2930 3121 3375 3629 3883 4200 4518 4835 5153 5470 6232 1.00

1855 2007 2185 2376 2566 2820 3011 3265 3519 3773 4090 4408 4725 5043 5360 6122 1.00

1730 1882 2060 2250 2441 2695 2885 3139 3393 3647 3965 4282 4600 4917 5235 5997 1.00

1588 1740 1918 2109 2299 2553 2744 2998 3252 3506 3823 4141 4458 4776 5093 5855 1.00

2362 2514 2692 2882 3073 3327 3517 3771 4025 4279 4597 4914 5232 5549 5867 6629 1.05

2079 2231 2409 2600 2790 3044 3235 3489 3743 3997 4314 4632 4949 5267 5584 6346 1.05

2334 2486 2664 2855 3045 3299 3490 3744 3998 4252 4569 4887 5204 5522 5839 6601 1.06

2303 2455 2633 2824 3014 3268 3459 3713 3967 4221 4538 4856 5173 5491 5808 6570 1.06

2272 2424 2602 2792 2983 3237 3427 3681 3935 4189 4507 4824 5142 5459 5777 6539 1.06

2197 2349 2527 2718 2908 3162 3353 3607 3861 4115 4432 4750 5067 5385 5702 6464 1.06

2158 2310 2488 2678 2869 3123 3313 3567 3821 4075 4393 4710 5028 5345 5663 6425 1.06

2118 2270 2448 2639 2829 3083 3274 3528 3782 4036 4353 4671 4988 5306 5623 6385 1.06

2236 2388 2566 2757 2947 3201 3392 3646 3900 4154 4471 4789 5106 5424 5741 6503 1.07

2099 2251 2429 2619 2810 3064 3254 3508 3762 4016 4334 4651 4969 5286 5604 6366 1.11

2346 2498 2676 2867 3057 3311 3502 3756 4010 4264 4581 4899 5216 5534 5851 6613 1.12

2287 2439 2617 2808 2998 3252 3443 3697 3951 4205 4522 4840 5157 5475 5792 6554 1.12

2138 2290 2468 2659 2849 3103 3294 3548 3802 4056 4373 4691 5008 5326 5643 6405 1.12

2012 2164 2342 2533 2723 2977 3168 3422 3676 3930 4247 4565 4882 5200 5517 6279 1.12

2319 2471 2649 2839 3030 3284 3474 3728 3982 4236 4554 4871 5189 5506 5824 6586 1.13

2252 2404 2582 2772 2963 3217 3407 3661 3915 4169 4487 4804 5122 5439 5757 6519 1.13

2177 2329 2507 2698 2888 3142 3333 3587 3841 4095 4412 4730 5047 5365 5682 6444 1.13

1910 2062 2240 2431 2621 2875 3066 3320 3574 3828 4145 4463 4780 5098 5415 6177 1.13

1792 1944 2122 2313 2503 2757 2948 3202 3456 3710 4027 4345 4662 4980 5297 6059 1.13

1658 1810 1989 2179 2370 2624 2814 3068 3322 3576 3894 4211 4529 4846 5164 5926 1.13

2217 2369 2547 2737 2928 3182 3372 3626 3880 4134 4452 4769 5087 5404 5722 6484 1.14

2118 2270 2448 2639 2829 3083 3274 3528 3782 4036 4353 4671 4988 5306 5623 6385 1.18

2032 2184 2362 2552 2743 2997 3187 3441 3695 3949 4267 4584 4902 5219 5537 6299 1.18

2330 2482 2660 2851 3041 3295 3486 3740 3994 4248 4565 4883 5200 5518 5835 6598 1.19

2303 2455 2633 2823 3014 3268 3458 3712 3966 4220 4538 4855 5173 5490 5808 6570 1.19

2157 2309 2487 2678 2869 3123 3313 3567 3821 4075 4393 4710 5028 5345 5663 6425 1.19

2267 2420 2598 2788 2979 3233 3423 3677 3931 4185 4503 4820 5138 5455 5773 6535 1.20

2232 2384 2562 2753 2943 3197 3388 3642 3896 4150 4467 4785 5102 5420 5737 6499 1.20

2197 2349 2527 2717 2908 3162 3352 3606 3860 4114 4432 4749 5067 5384 5702 6464 1.20

2315 2467 2645 2835 3026 3280 3470 3724 3978 4232 4550 4867 5185 5502 5820 6582 1.25

2138 2290 2468 2658 2849 3103 3293 3547 3801 4055 4373 4690 5008 5325 5643 6405 1.25

2051 2203 2381 2572 2762 3016 3207 3461 3715 3969 4286 4604 4921 5239 5556 6319 1.25

1428 1580 1758 1949 2140 2394 2585 2839 3093 3347 3665 3983 4300 4618 4935 5697 1.25

1956 2108 2287 2477 2668 2922 3112 3366 3620 3874 4192 4510 4827 5145 5462 6224 1.26

2283 2435 2613 2804 2994 3248 3439 3693 3947 4201 4518 4836 5153 5471 5788 6550 1.27

2248 2400 2578 2768 2959 3213 3403 3657 3911 4165 4483 4800 5118 5435 5753 6515 1.27

2212 2364 2542 2733 2923 3177 3368 3622 3876 4130 4448 4765 5083 5400 5718 6480 1.27

2177 2329 2507 2697 2888 3142 3333 3587 3841 4095 4412 4730 5047 5365 5682 6444 1.27

1846 1998 2176 2367 2557 2812 3002 3256 3510 3764 4082 4399 4717 5034 5352 6114 1.27

1720 1872 2050 2241 2431 2686 2876 3130 3384 3638 3956 4274 4591 4909 5226 5988 1.27

2070 2222 2400 2591 2782 3036 3226 3480 3734 3988 4306 4623 4941 5258 5576 6338 1.32

1976 2128 2306 2496 2687 2941 3132 3386 3640 3894 4211 4529 4847 5164 5482 6244 1.33

2295 2447 2625 2815 3006 3260 3450 3704 3958 4212 4530 4847 5165 5482 5800 6562 1.34

2192 2344 2522 2713 2903 3158 3348 3602 3856 4110 4428 4745 5063 5380 5698 6460 1.34

2157 2309 2487 2678 2868 3122 3313 3567 3821 4075 4392 4710 5027 5345 5662 6424 1.34

2263 2415 2593 2784 2974 3228 3419 3673 3927 4181 4498 4816 5134 5451 5769 6531 1.35

2228 2380 2558 2748 2939 3193 3383 3638 3892 4146 4463 4781 5098 5416 5733 6495 1.35

1995 2147 2325 2516 2706 2960 3151 3405 3659 3913 4231 4548 4866 5183 5501 6263 1.40

2172 2324 2502 2693 2884 3138 3328 3582 3836 4090 4408 4725 5043 5360 5678 6440 1.41

2089 2242 2420 2610 2801 3055 3246 3500 3754 4008 4325 4643 4960 5278 5595 6358 1.41

1495 1648 1826 2017 2208 2463 2654 2908 3162 3416 3734 4052 4370 4687 5005 5767 1.41

2275 2427 2605 2795 2986 3240 3431 3685 3939 4193 4510 4828 5145 5463 5780 6542 1.42

2208 2360 2538 2728 2919 3173 3364 3618 3872 4126 4443 4761 5078 5396 5713 6475 1.42

1892 2044 2222 2413 2604 2858 3048 3302 3557 3811 4128 4446 4764 5081 5399 6161 1.42

1773 1925 2103 2294 2485 2739 2930 3184 3438 3692 4010 4328 4645 4963 5280 6043 1.43

2243 2395 2573 2764 2954 3208 3399 3653 3907 4161 4479 4796 5114 5431 5749 6511 1.44

2

Design

2-58

Drive Selection Table

2

Design

8V (SR = 1.49 ~ 4.02)

Table 2-43-2 Drive Selection Table

Speed ratio

Effective diameter

(mm)

8V

Small pulley Large pulley

1000

1.49 425

1.50 335

1.50 375

630

500

560

-

8V

1060

-

8V

1120

8V

1180

8V

1250

8V

1320

Center distance (mm)

8V

1400

8V

1500

8V

1600

8V

1700

8V

1800

8V

1900

8V

2000

8V

2120

609 685 762 839 928 1017 1119 1246 1374 1501 1628 1755 1882 2035

1.50 475

1.51 300

1.52 315

1.57 800

710

450

475

1250

-

-

-

677 753 830 906 996 1085 1187 1314 1441 1568 1695 1822 1950 2102

645 721 798 874 964 1053 1155 1282 1409 1536 1664 1791 1918 2070

-

-

-

-

1059

1.58 400

1.58 450

1.59 300

1.59 355

1.59 630

1.60 315

630

710

475

560

1000

500

-

-

-

603 680 770 860 962 1090 1218 1345 1473 1600 1727 1880

-

655 732 809 885 975 1064 1166 1293 1421 1548 1675 1802 1929 2082

-

623 700 777 853 943 1032 1134 1262 1389 1516 1643 1770 1898 2050

-

634 711 788 864 954 1043 1145 1273 1400 1527 1655 1782 1909 2062

1.61 500

1.68 300

1.68 335

1.68 425

1.69 375

1.69 475

1.77 710

800

500

560

710

630

800

1250

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1121

1.78 400

1.79 315

1.79 355

1.79 450

1.79 560

1.88 300

1.89 335

1.89 425

710

560

630

800

1000

560

630

800

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1.91 375

1.99 630

2.01 355

2.01 400

2.01 500

2.01 800

2.02 315

2.12 300

2.12 475

2.14 335

2.15 375

2.24 450

2.24 560

2.26 710

2.27 315

2.27 355

2.37 425

2.39 300

2.41 335

2.52 400

2.52 500

2.55 630

2.56 315

2.65 475

2.69 300

2.69 375

2.80 450

2.84 355

2.87 560

2.96 425

3.02 335

3.15 400

3.21 315

3.22 500

3.36 375

3.37 300

3.39 475

3.56 355

3.58 450

3.77 335

3.80 425

4.02 315

710

1250

710

800

1000

1600

630

630

1000

710

800

1000

1250

1600

710

800

1000

710

800

1000

1250

1600

800

1250

800

1000

1250

1000

1600

1250

1000

1250

1000

1600

1250

1000

1600

1250

1600

1250

1600

1250

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

612 706 811 941 1071 1200 1328 1457 1585 1739

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

594 674 767 859 963 1093 1222 1350 1479 1607 1735 1888

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

799 937 1071 1205 1336 1467 1624

-

-

-

665 808 946 1081 1215 1346 1478 1634

-

-

-

-

-

-

-

-

-

2-59

Drive Selection Table

Color coding of Power rating correction factor : Kc

0.7

0.8

0.9

1.0

1.1

1.2

8V

1.49 ~ 4.02

8V

2240

8V

2360

8V

2500

8V

2650

8V

2800

8V

3000

8V

3150

Center distance (mm)

8V

3350

8V

3550

8V

3750

8V

4000

8V

4250

8V

4500

8V

4750

8V

5000

8V

5600

Speed ratio

2014 2166 2344 2535 2725 2980 3170 3424 3678 3933 4250 4568 4885 5203 5520 6283 1.49

2188 2340 2518 2708 2899 3153 3344 3598 3852 4106 4423 4741 5059 5376 5694 6456 1.50

2109 2261 2439 2630 2820 3074 3265 3519 3773 4027 4345 4662 4980 5297 5615 6377 1.50

1911 2063 2241 2432 2623 2877 3068 3322 3576 3830 4148 4465 4783 5100 5418 6180 1.50

2255 2407 2585 2775 2966 3220 3411 3665 3919 4173 4490 4808 5125 5443 5760 6523 1.51

2223 2375 2553 2744 2934 3189 3379 3633 3887 4141 4459 4776 5094 5411 5729 6491 1.52

1214 1368 1549 1741 1933 2188 2380 2635 2890 3144 3463 3781 4099 4417 4735 5497 1.57

2033 2185 2363 2554 2745 2999 3189 3444 3698 3952 4269 4587 4905 5222 5540 6302 1.58

1930 2082 2260 2451 2642 2896 3087 3341 3595 3849 4167 4485 4802 5120 5437 6200 1.58

2235 2387 2565 2755 2946 3200 3391 3645 3899 4153 4470 4788 5106 5423 5741 6503 1.59

2124 2276 2454 2645 2836 3090 3280 3534 3788 4043 4360 4678 4995 5313 5630 6393 1.59

1554 1707 1886 2077 2268 2523 2714 2969 3223 3477 3795 4113 4431 4749 5066 5829 1.59

2203 2355 2533 2724 2914 3169 3359 3613 3867 4121 4439 4757 5074 5392 5709 6471 1.60

1818 1970 2149 2340 2531 2785 2976 3230 3484 3738 4056 4374 4692 5009 5327 6089 1.61

2214 2367 2545 2735 2926 3180 3371 3625 3879 4133 4451 4768 5086 5403 5721 6483 1.68

2139 2291 2470 2660 2851 3105 3296 3550 3804 4058 4376 4693 5011 5328 5646 6408 1.68

1948 2101 2279 2470 2661 2915 3106 3360 3614 3868 4186 4504 4821 5139 5457 6219 1.68

2052 2204 2382 2573 2764 3018 3209 3463 3717 3971 4289 4606 4924 5242 5559 6321 1.69

1836 1989 2168 2359 2549 2804 2995 3249 3503 3758 4075 4393 4711 5028 5346 6108 1.69

1277 1432 1613 1806 1998 2254 2446 2702 2957 3212 3530 3849 4167 4485 4803 5566 1.77

1967 2120 2298 2489 2680 2934 3125 3379 3633 3888 4205 4523 4841 5158 5476 6238 1.78

2154 2307 2485 2675 2866 3120 3311 3565 3819 4073 4391 4709 5026 5344 5661 6424 1.79

2067 2219 2397 2588 2779 3033 3224 3478 3732 3987 4304 4622 4939 5257 5575 6337 1.79

1855 2008 2186 2377 2568 2823 3014 3268 3522 3777 4095 4412 4730 5048 5365 6128 1.79

1605 1758 1937 2129 2320 2575 2767 3021 3276 3530 3848 4166 4484 4802 5120 5883 1.79

2166 2318 2496 2687 2878 3132 3323 3577 3831 4085 4403 4720 5038 5355 5673 6435 1.88

2082 2234 2413 2603 2794 3049 3239 3493 3748 4002 4320 4637 4955 5273 5590 6352 1.89

1874 2026 2205 2396 2587 2842 3033 3287 3541 3796 4114 4431 4749 5067 5385 6147 1.89

1986 2138 2317 2508 2699 2953 3144 3398 3653 3907 4225 4542 4860 5178 5495 6258 1.91

1332 1488 1670 1863 2056 2313 2505 2761 3016 3271 3590 3909 4227 4545 4864 5627 1.99

2001 2153 2332 2523 2714 2968 3159 3413 3668 3922 4240 4558 4875 5193 5511 6273 2.01

1892 2045 2224 2415 2606 2861 3051 3306 3560 3815 4133 4451 4768 5086 5404 6166 2.01

1648 1802 1981 2173 2365 2620 2811 3066 3321 3576 3894 4212 4530 4848 5166 5929 2.01

1225 1424 1622 1883 2077 2335 2593 2849 3170 3490 3809 4128 4447 5212 2.01

2097 2249 2428 2619 2809 3064 3254 3509 3763 4017 4335 4653 4970 5288 5606 6368 2.02

2108 2261 2439 2630 2821 3075 3266 3520 3774 4029 4346 4664 4982 5300 5617 6379 2.12

1666 1820 1999 2191 2383 2638 2830 3085 3340 3594 3913 4231 4549 4867 5185 5948 2.12

2016 2168 2347 2538 2729 2983 3174 3429 3683 3937 4255 4573 4891 5208 5526 6288 2.14

1910 2063 2242 2433 2625 2879 3070 3325 3579 3834 4152 4470 4787 5105 5423 6186 2.15

1684 1838 2017 2210 2401 2657 2848 3103 3358 3613 3932 4250 4568 4886 5204 5967 2.24

1380 1537 1719 1913 2106 2363 2556 2812 3068 3323 3642 3961 4280 4598 4916 5680 2.24

1284 1485 1683 1945 2140 2399 2657 2914 3235 3555 3875 4195 4514 5279 2.26

2030 2183 2362 2553 2744 2998 3189 3444 3698 3953 4270 4588 4906 5224 5541 6304 2.27

1925 2078 2257 2448 2639 2894 3085 3340 3594 3849 4167 4485 4803 5121 5438 6201 2.27

1702 1856 2036 2228 2420 2675 2867 3122 3377 3632 3950 4269 4587 4905 5223 5986 2.37

2041 2194 2373 2564 2755 3010 3201 3455 3710 3964 4282 4600 4917 5235 5553 6315 2.39

1940 2093 2272 2463 2654 2909 3100 3355 3610 3864 4182 4500 4818 5136 5454 6216 2.41

1719 1873 2054 2246 2438 2694 2885 3141 3396 3651 3969 4287 4606 4924 5242 6005 2.52

1421 1578 1761 1955 2149 2406 2599 2855 3111 3367 3686 4005 4324 4643 4961 5725 2.52

1143 1335 1538 1737 2000 2195 2455 2714 2971 3293 3614 3934 4253 4573 5339 2.55

1954 2107 2286 2478 2669 2924 3115 3370 3625 3879 4197 4515 4833 5151 5469 6232 2.56

1438 1595 1778 1973 2167 2424 2617 2874 3130 3386 3705 4024 4343 4662 4980 5744 2.65

1965 2118 2297 2489 2680 2935 3127 3381 3636 3891 4209 4527 4845 5163 5480 6243 2.69

1737 1891 2072 2264 2456 2712 2904 3159 3414 3669 3988 4306 4625 4943 5261 6024 2.69

1455 1612 1795 1990 2184 2442 2635 2892 3148 3404 3723 4043 4361 4680 4999 5763 2.80

1751 1905 2086 2278 2471 2727 2918 3174 3429 3684 4003 4321 4640 4958 5276 6039 2.84

1187 1381 1584 1784 2048 2244 2504 2763 3021 3343 3664 3985 4305 4624 5390 2.87

1472 1629 1813 2008 2202 2460 2653 2910 3166 3422 3742 4061 4380 4699 5018 5782 2.96

1765 1920 2100 2293 2485 2741 2933 3189 3444 3699 4018 4336 4655 4973 5291 6054 3.02

1488 1646 1830 2025 2219 2478 2671 2928 3184 3440 3760 4079 4399 4717 5036 5801 3.15

1779 1934 2114 2307 2500 2756 2948 3203 3459 3714 4033 4351 4670 4988 5306 6070 3.21

1224 1419 1623 1824 2088 2285 2546 2805 3064 3386 3707 4028 4348 4668 5435 3.22

1505 1663 1847 2042 2237 2495 2689 2946 3202 3459 3778 4098 4417 4736 5055 5819 3.36

1790 1944 2125 2318 2511 2767 2959 3214 3470 3725 4044 4362 4681 4999 5317 6081 3.37

1067 1240 1435 1639 1840 2105 2302 2563 2823 3081 3404 3725 4046 4367 4687 5453 3.39

1518 1677 1861 2056 2251 2510 2703 2960 3217 3473 3793 4113 4432 4751 5070 5834 3.56

1082 1255 1451 1656 1857 2122 2319 2580 2840 3099 3422 3743 4064 4385 4705 5472 3.58

1532 1690 1874 2070 2265 2524 2717 2974 3231 3488 3808 4127 4447 4766 5085 5849 3.77

1097 1271 1467 1672 1873 2139 2336 2598 2858 3117 3439 3761 4082 4403 4723 5490 3.80

1545 1704 1888 2084 2279 2538 2731 2989 3246 3502 3822 4142 4461 4780 5099 5864 4.02

2

Design

2-60

2

Design

Drive Selection Table

8V (SR = 4.04 ~ 5.41)

Table 2-43-3

Drive Selection Table

Speed ratio

Effective diameter

(mm)

8V

Small pulley Large pulley

1000

4.04 400 1600 -

4.22 300

4.31 375

4.56 355

4.83 335

5.15 315

5.41 300

1250

1600

1600

1600

1600

1600

-

-

-

-

-

-

8V

1060

-

-

-

-

-

-

-

8V

1120

-

-

-

-

-

-

-

8V

1180

-

-

-

-

-

-

-

8V

1250

-

-

-

-

-

-

-

-

-

-

-

-

-

8V

1320

-

Center distance (mm)

8V

1400

-

8V

1500

-

8V

1600

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

8V

1700

-

-

-

-

-

-

8V

1800

-

-

-

-

-

-

8V

1900

-

-

-

-

-

-

8V

2000

-

-

-

-

-

-

8V

2120

-

-

-

-

977

986

2-61

Drive Selection Table

Color coding of Power rating correction factor : Kc

0.7

0.8

0.9

1.0

1.1

1.2

8V

4.04 ~ 5.41

8V

2240

8V

2360

8V

2500

8V

2650

8V

2800

8V

3000

8V

3150

Center distance (mm)

8V

3350

8V

3550

8V

3750

8V

4000

8V

4250

8V

4500

8V

4750

8V

5000

8V

5600

Speed ratio

1112 1286 1483 1688 1890 2156 2353 2615 2875 3134 3457 3779 4100 4421 4741 5509 4.04

1555 1714 1898 2094 2289 2548 2742 3000 3256 3513 3833 4153 4472 4792 5111 5875 4.22

1127 1302 1499 1704 1906 2172 2370 2632 2892 3152 3475 3797 4118 4439 4759 5527 4.31

1140 1314 1511 1717 1920 2186 2384 2646 2906 3166 3489 3811 4133 4454 4774 5542 4.56

1152 1326 1524 1730 1933 2199 2397 2660 2920 3180 3503 3825 4147 4468 4788 5556 4.83

1164 1339 1537 1743 1946 2213 2411 2673 2934 3194 3517 3840 4161 4482 4803 5571 5.15

1173 1348 1546 1753 1956 2223 2421 2684 2944 3204 3528 3850 4172 4493 4814 5582 5.41

2

Design

2-62

3-1

3

.Reference

Length measurement

Tensioning

Use of idlers

Quarter-Turn Drives

V-Flat pulley drives

Multi V-Belts

Storage and Handling of V-Belts

Request for belt design

Global Factories & Sales Offices

3

Reference

3-3

Length measurement

Precise measuring methods are specified in DIN 2215 for Classical V-Belts, RMA IP-22 for

Maxstar Wedge V-Belts, and DIN 7753 Part 1 for Narrow V-Belts. The V-Belt is laid over two equal size pulleys as following fi gure. These pulley grooves are designed to correspond with the belt section specifi ed in Table 3-2 ~ 3-4. The measuring force is added to the measuring pulley in such a way. Belt length is calculated by the formula which is specifi ed in Table 3-1.

C

Fig. 3-1 Diagram of fi xture for length measurement

Length calculation formula

Belt section

Z, ZX

A, AX

B, BX

C, CX

D

E

3V, 5V, 8V

3VX, 5VX

SPZ, SPA, SPB, SPC

SPZX, SPAX, SPBX, SPCX

Length designation

Inner length : Li

Effective length : Le

Datum length : Ld

Measuring force(N) be bd h1 h2

Fig. 3-2 Measuring pulley

Table 3-1

Length calculation formula

Li = Ld - 22

Li = Ld - 30

Ld = 2C + dd

Li = Ld - 43

Li = Ld - 52

Li = Ld - 75

Li = Ld - 82

Le = 2C + de

Ld = 2C + dd dd de

Pulley dimensions and measuring force of Classical V-Belts for DIN

Belt section

Datum width : bd

Datum diameter : dd

Effective diameter : de

Pulley datum circumference : dd

Angle :

Distance down to datum line : h1

Measuring force mm mm mm mm

° mm

N

Table 3-2

Z

ZX

A

AX

B

BX

C

CX

D E

8.5 11.0 14.0 19.0 27.0 32.0

57.30 95.50 127.32 222.82 318.31 572.96

62.30

180

34

2.5

110

102.10

300

34

3.3

200

135.72

400

34

4.2

300

234.22

700

34

5.7

750

334.51

1000

36

8.1

1400

596.96

1800

36

12.0

1800

Pulley dimensions and measuring force of

Maxstar Wedge V-Belts for RMA/MPTA

Belt section

Effective width : be

Effective diameter : de

Pulley effective circumference : de

Angle :

Measuring force mm mm mm

°

N

3V

3VX

8.9

95.5

300

38

445

5V

5VX

15.2

191.0

600

38

1000

Table 3-3

8V

25.4

318.3

1000

38

2225

Pulley dimensions and measuring force of Narrow V-Belts for DIN

Belt section

Datum width : bd

Datum diameter : dd

Effective diameter : de

Pulley datum circumference : dd

Angle :

Distance down to datum line : h1

Measuring force mm mm mm mm

° mm

N

Table 3-4

SPZ

SPZX

SPA

SPAX

SPB

SPBX

SPC

SPCX

8.5 11.0 14.0 19.0

95.49 143.24 190.99 318.31

100 149 198 328

300 450 600 1000

36

2.255

360

36

2.880

560

36

3.505

900

36

4.845

1500

3

Reference

3-4

5 Calculation of V-belt drives design

Tensioning design V-Belts

Tension of the belts on a V-Belt drive is usually not critical. A few simple rules about tensioning will satisfy most of your requirements. For your proper tensioning of V-Belts, just follow these four steps.

Step 1.

After placing V-Belts into the pulleys grooves, increase the distance between pulleys until V-Belts are snug.

Step 2.

Measure the length of the span for your drive. At the center of the span, apply Defl ection load (F ) in Fig. 3-3 on page

3-7 with spring scale in a direction perpendicular to the span until the belt is defl ected from the normal by amount equal to 1.6mm for every 100mm.

Step 3.

A few days are necessary for V-Belts to seat into pulley grooves. The belt tension for a V-Belt drive is the lowest at which the belts will not slip under the highest load condition. A bigger tension than force maximum will reduce the life of belts and bearings, and a less tension than force minimum, will cause slip.

3

Reference

Step 4.

During the normal operation, V-Belts will seat itself into pulley grooves, and will require periodic checks to maintain tension. The seating occurs more rapidly during the fi rst 20-24 hours of operation. It is necessary to keep the belts and pulleys from any foreign materials which may cause slip. If V-Belts slip, tighten them. Recommendable belt

Defl ection load to get the proper tension is shown in table 3-6. But the ideal tension can be obtained as follows :

1. Calculate Span length

Ls= C 2 −

(Dd − dd) 2

4

Ls : Span length (mm)

C : Center distance (mm)

Dd : Large pulley datum diameter (mm) dd : Small pulley datum diameter (mm)

2. Calculate Minimum static tension

To=

{

(2.5 - K )

500 · ·

Pd

n

b · V

+ WV 2

}

× 0.9

To : Minimum static tension (N / pc.)

K : Arc of contact correction factor

Pd : Design power (kW)

n

b : Number of belts

W : Belt weight per unit (kg / m) see Table 3-5 in page 3-6

V : Belt speed (m/sec.)

Tomax(initial) : Maximum belt tension at initial fi tting (N/a belt)

Tomax(retension) : Maximum belt tension at retensioning (N/a belt)

Tomax(initial)= 1.5 · To

Tomax(retension)=1.3 · To

3. Calculate Defl ection load

A) Multiple V-Belts drivers :

F min =

To + Y

16

B) Single V-Belts drivers :

F min =

To + Y(Ls/L)

16

F max(initial) =

F max(retension) =

16

1.3 · To + Y

16

(N / a belt)

Y : a constant see Table 3-5 in page 3-6

L : Belt length (mm)

Ls : Span length (mm)

F max(initial) =

1.5 · To + Y(Ls/L)

16

F max(retension) =

1.3 · To + Y(Ls/L)

16

4. Calculate maximum Shaft load at initial fi tting

Fs : Static shaft load (N)

: Arc of contact for small pulley

3-5

Calculation of V-belt drives design 5

Belt weight per unit (W) & Constant (Y)

Belt Section

5V

8V

ZX

AX

SPB

SPC

3V

D

E

SPZ

SPA

B

C

Z

A

SPBX

SPCX

3VX

5VX

BX

CX

SPZX

SPAX

W(kg/m)

0.23

0.60

0.06

0.11

0.21

0.37

0.08

0.65

1.00

0.08

0.13

0.05

0.12

0.20

0.30

0.21

0.36

0.07

0.20

0.18

0.33

0.08

0.11

Y(N/pc)

39.2

98.1

9.8

14.7

39.2

71.3

19.6

58.8

108

19.6

26.1

9.8

14.7

19.6

29.4

39.2

71.3

19.6

39.2

19.6

29.4

19.6

26.1

Table 3-5

3

Reference

3-6

5 Calculation of V-belt drives design

Tensioning of V-Belts

Step 1. Calculate Span length

Span length means the length between the belt contact points to the pulleys (Ls in Fig. 3-3).

If the diameter of the drive pulley and the driven pulley are the same, it is the same with Center Distance.

Fig. 3-3 Defl ection measurement

Span Length

(Ls)

3

Reference

3-7

Step 2. Calculate Defl ection load by loading on the center of Span length.

Load on the center of Span length at right angle to the belt with the equipment like a spring balance, then check the load.

Deflection should be 1.6mm per 100mm of Span length. For example, if Span length is

500mm, Defl should

Step 3. Adjust the belt tension so that the load calculated by step 2. is between maximum and minimum Defl in

Defl ection load & Belt tension

Table 3-6

Small pulley diameter (mm)

Minimum tensioning conditions

Belt section

10/Z

13/A

17/B

22/C

32/D

40/E

SPZ/3V

SPA

SPB/5V

SPC

8V

10/ZX

13/AX

17/BX

22/CX

SPZX/3VX

SPAX

SPBX/5VX

SPCX

Defl ection load

(N)

15

18

19

25

28

6

7

8

12

154

7

9

9

17

18

20

27

29

30

46

53

66

84

99

104

136

148

12

15

19

20

27

32

36

36

42

50

72

94

109

107

134

20

22

27

33

46

48

50

17

37

46

55

63

79

91

101

~50

51~70

71~100

~80

81~100

101~132

~125

126~160

161~200

161~224

225~355

~250

251~355

356~560

~355

356~560

561~800

~50

51~70

71~100

~80

81~100

101~132

~125

126~160

161~200

~200

201~250

251~355

~355

356~560

561~800

~560

561~800

801~950

~70

71~90

91~125

~100

101~140

141~200

~160

~200

201~250

251~355

~70

71~90

91~125

~100

101~140

141~200

~160

161~224

225~355

~250

251~355

356~560

Tension values must be calculated for the pulleys which are not included in the above table.

Belt tension

(N)

80

110

120

170

220

270

290

380

430

2360

110

130

140

250

280

310

410

440

460

690

810

990

1280

1510

1570

2080

2260

180

220

280

290

400

480

530

540

650

770

1090

1450

1690

1600

2030

710

740

770

260

300

340

400

500

570

690

840

970

1200

1380

1550

Maximum tensioning conditions

Initial fi tting Retension

Defl ection load

(N)

22

27

29

36

41

8

11

12

17

227

11

12

14

24

27

30

40

42

44

67

79

98

124

146

154

201

219

17

22

27

29

39

47

52

52

62

74

106

139

162

157

197

29

33

39

49

69

71

74

26

55

67

81

93

117

134

150

Belt tension

(N)

120

160

180

250

330

410

440

560

640

3540

170

190

210

370

420

460

620

660

690

1030

1220

1490

1910

2270

2360

3120

3390

260

340

420

430

600

720

800

800

970

1160

1640

2170

2530

2400

3050

1070

1110

1160

390

450

510

600

750

860

1040

1250

1450

1800

2070

2330

Defl ection load

(N)

198

10

11

12

21

23

26

35

37

39

58

69

85

108

128

134

175

191

16

19

24

25

34

40

46

46

54

64

92

121

141

137

172

26

29

34

42

60

62

64

22

48

59

71

81

102

116

131

19

23

25

32

36

7

9

11

15

Belt tension

(N)

110

140

160

220

290

350

380

490

560

3070

150

170

180

320

360

400

540

570

600

890

1060

1290

1660

1970

2040

2700

2940

230

290

360

370

520

620

690

700

840

1000

1420

1880

2190

2080

2640

930

960

1000

340

390

440

520

650

740

900

1090

1260

1560

1790

2020

PLEASE USE THIS DATA AS A REFERENCE.

Use of idlers

Idlers shorten the belt life.Use idlers only in the following cases.

When the center distance cannot be adjusted.

When the V-Belt is used as a clutch.

When the belt span is too long and the belt vibrates.

When a longer arc of contact with pulleys is required.

When the belt tension is to be maintained during operation.

When the belt is required to avoid obstructions.

Use of inside idlers

Inside idler

Fig. 3-4

Driven

Driver

Place a grooved idler on the slack side of the belt. It is preferable to use an idler on the inside of the layout, not the outside.

The inside idler should be placed near the large pulley, otherwise the arc of contact becomes smaller and belt might slip.

Use of backside idlers

Backside idler Fig. 3-5

Driven

Driver

The backside idlers shorten the belt life signifi cantly, and are not recommended.

Use a fl at pulley as a backside idler and place it near the small pulley.

The diameter of idler pulleys shall be larger than the diameter specifi ed in Table 3-7.

Use the idler bigger than twice the size of the small pulley for Maxstar Wedge.

Minimum datum diameter of idler pulley

Section

A

B

C

D

E

Inside idler(mm)

75

125

225

325

525

Table 3-7

Backside idler(mm)

110

190

340

490

790

3

Reference

3-8

Special belt drives

Quarter-Turn Drives

Quarter-Turn Drives are drives where the driver and driven shafts are at right angles to each other.

To design Quarter-Turn Drives, follow the steps given in "Calculation of V-Belt drives design" section for designing an ordinary drive, keeping in mind the following special points:

1. Speed ratio should be 2.50 or less.

2. A standard V-Belt length should be chosen which will give a minimum Center distance of:

Minimum C = 5.5(D+W)(mm)

D = Large pulley outside diameter (mm)

W= Width of Deep Grooved Pulley, from Table 3-9

3. Aligning the drive

Looking down on the drive, a line from the center of the vertical shaft should pass through the center of the face of the pulley on the horizontal shaft. The horizontal shaft should be at right angles to this line.

See "Top View" in Fig. 3-6.

Looking at the side of the drive, the center of the horizontal shaft should be raised a distance "Y", from

Table 3-8 above the level line through the center of the face of the pulley on the vertical shaft. See

"Side View" in Fig. 3-6.

4. Direction of rotation

The direction of rotation must be such that the Tight side of the drive will be on the bottom. See "Side

View" in Fig. 3-6.

5. Power rating for Quarter-Turn Drives should be 90% from it for ordinary drives. And Arc of contact correction factor (K ) may be taken as 1.00 on Quarter-Turn Drives.

6. Deep grooved pulleys should always be used on Quarter-Turn Drives using indivisual V-Belts.

Horizontal shaft

Horizontal shaft

Top View

Side View

Tight side

Fig. 3-6

Vertical shaft

Vertical shaft

Table 3-8

Center distance

1500

2000

2500

3000

3500

4000

4500

5000

5500

6000

(unit: mm)

Dimension

Y

65

70

75

100

130

165

195

230

270

305

Table 3-9

(unit: mm)

3

Reference

Width of Deep grooved pulley (W)

No. of

Grooves

6

7

4

5

1

2

3

8

9

10

78

96

114

132

A

24

42

60

150

168

186

95

117

140

162

B

29

51

73

184

206

229

3-9

C

41

73

105

136

168

200

232

263

295

327

187

232

276

321

365

410

454

V-Belt Section

D

54

98

143

E

68

120.5

173

225.5

278

330.5

383

435.5

488

540.5

57

70

83

95

3V

19

32

44

108

121

133

90

111

132

152

5V

29

49

70

173

194

214

143

176

209

243

8V

43

76

110

276

309

343

Special belt drives

V-Flat pulley drives

What V-Flat drive is to use a V-Grooved pulley and the other fl at pulley with regard to V-Belt drive.

This type of drive is used when it is desirable to change a fl at belt drive into a V-Belt drive, because it is often most economical to retain the fl at pulley.

Classical V-Belts for DIN (Z,A,B,C,D) are suitable for the drive.

The following prerequisites must be fulfi lled to ensure the operating reliability of V-Belt drive:

·The small pulley must be a grooved pulley.

·Speed ratio must be SR 3.

·Belt speed must be V 25 m/sec.

·The datum diameter of fl at pulley = Outside diameter Value of table 3-11

·Relation between pulley diameter and Center distance must be fulfi lled the following formula.

0.48

Dd − dd

C

1.17

Dd : Datum diameter of fl at pulley (mm)

dd : Datum diameter of V pulley (mm)

C : Center distance (mm)

Table 3-10

Arc of contact correction factor for V-Belt drives

Dd-dd

C

0.70

0.80

0.90

1.00

1.10

1.20

1.30

1.40

1.50

0.00

0.10

0.20

0.30

0.40

0.50

0.60

Contact of small pulley

( ˚ )

113

106

99

91

83

139

133

127

120

180

174

169

163

157

151

145

Correction factor

K

0.84

0.85

0.85

0.82

0.80

0.77

0.73

0.70

0.65

0.75

0.76

0.78

0.79

0.80

0.81

0.83

3

Reference

Table 3-11

Difference between pulley datum diameter and outside diameter

Belt Section Z A B C D

Difference between datum diameter and outside diameter (mm)

5.0

6.6

8.4

11.4

16.2

E

24.0

3-10

Special belt drives

3

Reference

Multi V-Belts

MITSUBOSHI MULTI (Banded) V-Belt is made up of two or more standard V-Belts connected together at the top as shown in the picture. No special pulleys are needed, as the individual belts have the same cross section and spacing as those which operate on standard pulleys. The top backing of

Multi V-Belts does not come in contact with the top of the pulleys, so each multiple belt produces the same wedge effect as a single belt.

Fig. 3-7

Advantage of Multi (Banded) V-Belts

In most of the applications, V-Belts can meet the drive requirements. However, under certain operating conditions, belt whipping or vibration may become a critical problem, causing belts ultimately to come off the drive possible causes include the following:

1) Load vibration occurs periodically either on the driver side or at the drive unit, e.g. internal combustion engine, air compressor or piston pump.

2) There is excessively large load vibration or shock load, e.g. hoist or press.

3) Long span.

4) Vertical shaft length drives.

Belt vibration occurs laterally, as well as vertically. Under these conditions single matched sets of belts will be out of alignment in entering the pulley and will be damaged turned over or thrown off the drive. Multi V-Belts are recommended for use under these conditions as they can stand lateral stress, and belt vibration is virtually eliminated, resulting in longer belt life expectancy.

How to select Multi V-Belts

1) Size range

The available sizes are as follows.

Available range of Multi V-Belts

Cross section

B, BX

C, CX

D

3V, 3VX

5V, 5VX

8V

SPB

SPC

Range of available size

B60~B315

C76~C720

D90~D600

3V600~3V1400

5V630~5V3550

8V1000~8V5000

SPB2120~SPB10287

SPC2120~SPC10668

Table 3-12

Center to center of pulley grooves(P)

19mm

25.4mm

36.5mm

10.3mm

17.5mm

28.6mm

19.0mm

25.5mm

Fig. 3-8

2) Number of ribs

Multi V-Belts are available in 2,3,4 and 5 ribs.

They may be used in matched sets for drives requiring more than 5 belts, as shown in the following table.

Number of belts

6

7

8

4

5

2

3

Recommended combination

3,3

3,4

4,4

4

5

2

3

Number of belts

9

10

11

12

13

14

15

Recommended combination

5,4

5,5

4,3,4

4,4,4

4,5,4

5,4,5

5,5,5

Number of belts

16

17

18

19

20

Table 3-13

Recommended combination

4,4,4,4

4,4,5,4

4,4,5,5

5,4,5,5

5,5,5,5

3-11

Banded V-belts

Tensioning of Multi V-Belts

The usual tensioning method by Defl ection load may not be usable for the accurate checking of tensioning of Multi V-Belts.

Initial tension can be alternatively checked by the elongation method as follows:

Step1

Find minimum static tension per a belt (To), using formula on page 2-20.

Then fi nd the range of recommendation tension.

Minimum tension= To

Maximum tension Tomax. = 1.5xTo.

Step2

Find the amount of elongation for belt to obtain the above tensions.

· Measurement Outer length of the belt at no tension. This can be done with the belt either on or off the drive.

·Find the belt length multipliers from below table for the above tension.

·Multiply the measured Outer length of the belt by each belt length multiplier to

obtain elongated outside circumference corresponding to each calculated tension.

Step3

Tense the drive until the measured outside circumference falls within the range of elongated minimum and maximum length values determined above.

Belt length multiplier for Classical V-Belts for DIN

Calculated

Tension

To (N)

B

Cross section

C D

Calculated

Tension

To (N)

196

294

392

490

588

686

785

1.0026

1.0039

1.0053

1.0067

1.0080

1.0093

1.0107

1.003

1.004

1.005

1.006

1.007

1.008

1.0030

1.0035

1.0040

883

981

1180

1370

1570

1770

1960

B

Cross section

Table 3-14

C D

1.009

1.010

1.0045

1.0050

1.0060

1.0070

1.0080

1.0090

1.0100

Belt length multiplier for Maxstar Wedge V-Belts for RMA / MPTA

Calculated

Tension

To (N)

3V

Cross section

5V 8V

Calculated

Tension

To (N)

3V

314

343

363

392

412

441

461

490

588

686

177

196

216

245

265

294

785

883

1.00228

1.00265

1.00303

1.00361

1.00400

1.00459

1.00500

1.00561

1.00603

1.00667

1.00710

1.00775

1.00819

1.00887

1.01120

1.01365

1.01624

1.01896

1.00228

1.00261

1.00281

1.00347

1.00417

1.00491

1.00568

2210

2450

2700

2940

3190

3430

3680

3920

4170

4410

981

1180

1370

1570

1770

1960

4900

Cross section

Table 3-15

5V 8V

1.00648

1.00819

1.01003

1.01201

1.01412

1.01637

1.01937

1.00220

1.00275

1.00334

1.00397

1.00463

1.00532

1.00625

1.00723

1.00826

1.00936

1.01051

1.01172

1.01299

1.01431

1.01569

1.01713

1.01863

3

Reference

3-12

3

Reference

Installation, Maintenance and Storage of V-belts

Storage and Handling of V-Belts

Storage of V-Belts

Do not expose belts direct to sunlight during storage. Store belts in shelves or hang belts on racks. Avoid placing belts on floor or ground. Avoid piling belts up.

Avoid storing belts in heavily bent condition.

Keep belts away from oil and grease.

Check bearing for oil.

Installation of V-Belts

Slack off on take -up until belts can be placed in grooves without forcing.

Never pry the belts into the pulley grooves to prevent cord break.

Check pulley alignment. Misalignment of pulley will shorten the belt life.

Keep defl ection angle less than 1/3˚.

Make sure all pulley grooves are equal in dimensions.

Uneven pulley grooves wear produces the same bad effect as mismatched belts.

Tension drive properly. See page

3-5~3-7 for belt tensioning method.

Give belts a few day running time to become seated in pulley grooves, then readjust take-up if necessary

3-13

Maintenance

Installation, Maintenance and Storage of V-belts

Make sure V-Belt drives are covered for safety before turning the machine on. An air tight cover shortens the belt life because it prevent heat radiation.

Maintain proper ventilation.

Never use a belt dressing. Be careful not to expose belts to water, oil or chemicals.

Dished

Out

Always use a set of new belts from one manufacture to replace a set of belts.

Mixing new and used belts in a set will shorten the belt life due to unequal stretch of belts.

Check pulley for groove wear.

If more than 1/32 inch (0.794mm) of

"Dished Out" can be seen, short belt life may be expected.

3-14

3

Reference

Request for belt design

Customer's Name

OEM/Replacement

Purpose

Model Name

Drawing

Specifi cation of Belt

Belt Size

Number of Belts

Annual Quantity available not available availability: yes / no (Date: )

Operating Conditions

Date: pcs.

pcs./year

Type of Prime Mover Power

Drive Speed

Pulley datum diameter

Center distance

Operational Hours per day

Drive

± hrs./day kW rpm Driven mm/teeth Driven

N•m mm

Idler Pulley:

Speed ratio

Other

Special

Conditions maximum torque rpm mm/teeth

Ambient Conditions

Other Information

Information for designing

3

Reference

Information for price

3-15

Reference

3-16

MITSUBOSHI BELTING LTD.

Classical V-Belts for DIN

Maxstar Wedge V-Belts for RMA / MPTA

Narrow V-Belts for DIN

The information contained herein is for information purposes only, and does not enlarge, amend or imply any warranty other than provided by the manufacture with the product. Any use of the product not in conformance with the manufacture's instruction may be dangerous.

V844MSTR1411UR 704924

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