MITSUBOSHI V-Belt Design Manual
V-Belt is a type of belt used for power transmission. It is widely used in various machines, including compressors, fans, pumps, and conveyors. It is an economical and easily obtained for replacement. The V-Belt Manual describes classical V-belts, Maxstar Wedge V-belts and Narrow V-belts for JIS, RMA, MPTA and DIN standards.
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MITSUBOSHI BELTING LTD.
V836-E
ENGLISH
Design Manual
V-Belt
JIS
The information contained in this catalogue is for an informational purpose only.
IN NO EVENT SHALL MITSUBOSHI BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE,
INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOST PROFITS, ARISING OUT OF OR
RELATED TO MITSUBOSHI PRODUCTS NOR FOR ANY DAMAGES ARISING DUE TO ANY
USE OF MITSUBOSHI PRODUCTS NOT IN CONFORMANCE WITH THE INSTRUCTION
PROVIDED BY MITSUBOSHI IN THIS CATALOGUE. MITSUBOSHI SPECIFICALLY DISCLAIMS
ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR
PURPOSE.
V83600501504sg03682903
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 JIS K 6323 / 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 JIS K 6323 / ISO4184, sections M, A, B, C, D, E, ZX, AX, BX, CX ……………………… P1-6~P1-9
Cross section Dimension for Classical V-Belts for JIS ………………………………………………………………………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~P1-19
Pulley for Classical V-Belts for JIS ……………………………………………………………………………………………P1-17
Pulley for Maxstar Wedge V-Belts for RMA / MPTA …………………………………………………………………………P1-18
Pulley for Narrow V-Belts for DIN ……………………………………………………………………………………………P1-19
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 JIS K 6323
Classical V-Belts are most widely used power transmission belts.
Economical and easily obtained for replacement.
Sections
Wrapped type : M / 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
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, 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
1
Properties
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
M / A / B / C
1-5
Fig. 1-8
Standard Range 3
Standard Belt Sizes
M
Classical V-Belts for JIS K 6323
A/13, AX
10
6 13
Belt indication
A 64
9
Belt indication
M 50
Cross section
Belt Code(inch)
Cross Section
Belt Code(inch)
M-Section
Belt Code
Effective length
Le (mm)
813
838
864
889
914
940
965
991
1016
1041
1067
1092
1118
1143
1168
1194
1219
1245
1270
508
533
559
584
610
635
660
686
711
737
762
787
37
38
39
40
41
42
43
44
32
33
34
35
36
45
46
47
48
49
50
27
28
29
30
31
20
21
22
23
24
25
26
Size range: 20" ~ 93"
Belt Code
50
51
52
53
54
45
46
47
48
49
55
56
57
58
59
37
38
39
40
41
42
43
44
32
33
34
35
36
27
28
29
30
31
20
21
22
23
24
25
26
: Available size for Raw Edge Cogged V-Belts AX
Pitch length
Lp (mm)
1143
1168
1194
1219
1245
1270
1295
1321
1346
1372
1397
1422
1448
1473
1499
813
838
864
889
914
940
965
991
1016
1041
1067
1092
1118
508
533
559
584
610
635
660
686
711
737
762
787
A-Section
Belt Code
Pitch length
Lp (mm)
2159
2184
2210
2235
2261
2286
2311
2337
2362
2388
2413
2438
2464
2489
2515
1829
1854
1880
1905
1930
1956
1981
2007
2032
2057
2083
2108
2134
1524
1549
1575
1600
1626
1651
1676
1702
1727
1753
1778
1803
90
91
92
93
94
85
86
87
88
89
95
96
97
98
99
77
78
79
80
81
82
83
84
72
73
74
75
76
67
68
69
70
71
60
61
62
63
64
65
66
Table 1-1
Belt Code
130
135
140
145
150
155
160
165
170
180
100
102
105
108
110
112
115
118
120
122
125
128
Size range: 20" ~ 360"
Pitch length
Lp (mm)
3302
3429
3556
3683
3810
3937
4064
4191
4318
4572
2540
2591
2667
2743
2794
2845
2921
2997
3048
3099
3175
3251
1
Properties
1-6
1
Properties
3 Standard Range
Standard Belt Sizes
Classical V-Belts for JIS K 6323
B/17, BX
17
Belt indication
B 59
11
Cross Section
Belt Code(inch)
Belt Code
52
53
54
55
56
47
48
49
50
51
57
58
59
60
61
62
63
64
42
43
44
45
46
37
38
39
40
41
29
30
31
32
33
34
35
36
25
26
27
28
: Available size for Raw Edge Cogged V-Belts BX
Pitch length
Lp (mm)
1194
1219
1245
1270
1295
1321
1346
1372
1397
1422
1448
1473
1499
1524
1549
1575
1600
1626
940
965
991
1016
1041
1067
1092
1118
1143
1168
635
660
686
711
737
762
787
813
838
864
889
914
Belt Code
B-Section
Pitch length
Lp (mm)
2210
2235
2261
2286
2311
2337
2362
2388
2413
2438
2464
2489
2515
2540
2591
2667
2743
2794
1956
1981
2007
2032
2057
2083
2108
2134
2159
2184
1651
1676
1702
1727
1753
1778
1803
1829
1854
1880
1905
1930
92
93
94
95
96
87
88
89
90
91
97
98
99
100
102
105
108
110
82
83
84
85
86
77
78
79
80
81
69
70
71
72
73
74
75
76
65
66
67
68
Belt Code
170
180
190
200
210
145
150
155
160
165
112
115
118
120
122
125
128
130
132
135
138
140
Pitch length
Lp (mm)
3683
3810
3937
4064
4191
4318
4572
4826
5080
5334
2845
2921
2997
3048
3099
3175
3251
3302
3353
3429
3505
3556
Size range: 23" ~ 660"
Table 1-2
1-7
Standard Range 3
Standard Belt Sizes
Classical V-Belts for JIS K 6323
C/22, CX
22
Belt indication
C 93
14
Cross Section
Belt Code(inch)
Belt Code
73
74
75
76
77
68
69
70
71
72
78
79
80
81
82
83
84
85
63
64
65
66
67
58
59
60
61
62
50
51
52
53
54
55
56
57
40
42
45
48
: Available size for Raw Edge Cogged V-Belts CX
Pitch length
Lp (mm)
1727
1753
1778
1803
1829
1854
1880
1905
1930
1956
1981
2007
2032
2057
2083
2108
2134
2159
1473
1499
1524
1549
1575
1600
1626
1651
1676
1702
1016
1067
1143
1219
1270
1295
1321
1346
1372
1397
1422
1448
Belt Code
C-Section
Pitch length
Lp (mm)
3048
3099
3175
3251
3302
3353
3429
3505
3556
3607
3683
3759
3810
3937
4064
4191
4318
4572
2489
2515
2540
2591
2667
2743
2794
2845
2921
2997
2184
2210
2235
2261
2286
2311
2337
2362
2388
2413
2438
2464
132
135
138
140
142
120
122
125
128
130
145
148
150
155
160
165
170
180
108
110
112
115
118
98
99
100
102
105
90
91
92
93
94
95
96
97
86
87
88
89
Table 1-3
Belt Code
190
200
210
220
230
240
250
260
270
Pitch length
Lp (mm)
4826
5080
5334
5588
5842
6096
6350
6604
6858
Size range: 37" ~ 660"
1
Properties
1-8
1
Properties
3 Standard Range
Standard Belt Sizes
Classical V-Belts for JIS K 6323
D/32 E/40
32
19
40
Belt indication
D 120
Belt Code
180
190
200
210
220
230
240
250
260
270
135
140
145
150
155
160
165
170
100
105
110
115
120
125
130
280
300
310
330
360
Cross Section
Belt Code(inch)
D-Section
Pitch length
Lp (mm)
4572
4826
5080
5334
5588
5842
6096
6350
6604
6858
3429
3556
3683
3810
3937
4064
4191
4318
2540
2667
2794
2921
3048
3175
3302
7112
7620
7874
8382
9144
Size range: 100" ~ 660"
25
Belt indication
E 180
Belt Code
180
210
240
270
300
330
360
390
420
Cross Section
Belt Code(inch)
E-Section
Pitch length
Lp (mm)
4572
5334
6096
6858
7620
8382
9144
9906
10668
Size range: 144" ~ 660"
Table 1-4
1-9
Standard Range 3
Standard Belt Sizes
Cross section Dimension of Classical V-Belts for JIS
Table 1-5
Section M A B C D E
Top belt width
Pitch width bo (mm) bp (mm)
10
8.0
13
9.2
17
12.5
22
16.9
32
24.6
40
28.7
Height of belt h (mm) 6 9 11 14 19 25
Distance down to pitch line hp (mm) 2.7
4.5
5.5
7 9.5
12.7
Allowed minimum
Pulley pitch diameter dp (mm) 40
67
(63)
118
(90)
180
(140)
300 450
Recommended maximum
Belt speed
V (m/s) 30
( ) : Figure of allowed minimum Pulley pitch diameter for Raw Edge Cogged type.
1
Properties bo bp hp h
Fig. 1-9
1-10
3 Standard Range
Standard Belt Sizes
1
Properties
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)
25~95 96~270 25~95 96~270
9.9
8.7
3VX
8.6
9.0
16.6
13.5
5VX
15.7
13.7
3V(3VX)-Section
Belt Code
Effective length
Le (mm)
5V(5VX)-Section
Belt Code
Effective length
Le (mm)
560
600
630
670
710
750
800
850
425
450
475
500
530
250
265
280
300
315
335
355
375
400
900
950
1000
1060
1120
1180
1250
1320
1400
1080
1143
1207
1270
1346
1422
1524
1600
1702
1803
1905
2032
2159
635
673
711
762
800
851
902
953
1016
2286
2413
2540
2692
2845
2997
3175
3353
3556
850
900
950
1000
1060
1120
1180
1250
1320
1400
1500
1600
1700
500
530
560
600
630
670
710
750
800
1800
1900
2000
2120
2240
2360
2500
2650
2800
3000
3150
3350
3550
: Available size for Raw Edge Cogged V-Belts 3VX & 5VX
2159
2286
2413
2540
2692
2845
2997
3175
3353
3556
3810
4064
4318
1270
1346
1422
1524
1600
1702
1803
1905
2032
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)
1700
1800
1900
2000
2120
2240
2360
2630
2500
2650
2800
3000
3150
1000
1060
1120
1180
1250
1320
1400
1500
1600
3350
3550
3750
4000
4250
4500
4750
5000
5600
6000
4318
4572
4826
5080
5385
5690
5994
5994
6350
6731
7112
7620
8001
2540
2692
2845
2997
3175
3353
3556
3810
4064
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)
M 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 for JIS
Pulley for Classical V-Belts complies with JIS B 1854.
Fig. 1-16
6.3
3
.2
6.3
3.
2
1
Properties
Dimensions (mm)
Belt section Pitch diameter : dp
M
50 dp 71
71 dp 90
90 dp
A
AX
B
BX
71 dp 100
100 dp 125
125 dp
125 dp 160
160 dp 200
200 dp
C
CX
D
E
200 dp 250
250 dp 315
315 dp
355 dp 450
450 dp
500 dp 630
630 dp
1-17
10
11
12
13
14
15
16
17
18
19
20
8
9
6
7
3
4
1
2
5
Number of belts & pulley width (mm)
Number of belt
A
AX
95
110
125
140
155
170
185
200
215
20
35
50
65
80
34
36
38
34
36
38
(° )
34
36
38
34
36
38
36
38
36
38
B
BX
120
139
158
177
196
215
234
253
272
291
310
329
25
44
63
82
101
W
9.65
9.75
9.86
11.95
12.12
12.30
15.86
16.07
16.29
21.18
21.45
21.72
30.77
31.14
36.95
37.45
C
CX
161
187
212
238
263
289
314
340
365
391
416
442
467
491
518
34
59
85
110
136
Lo K Ko e
8.0 2.7 6.3 -
Table 1-14 f
9.5
12.5 5.5 9.5 19.0 12.5
16.9 7.0 12.0 25.5 17.0
24.6 9.5 15.5 37.0 24.0
28.7 12.7 19.3 44.5 29.0
D
233
270
307
344
381
418
455
492
529
566
603
640
677
714
751
48
85
122
159
196
Table 1-15
E
325
369
414
458
503
547
592
635
58
102
147
191
236
280
681
725
770
814
859
903
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
5 Calculation of V-belt drives design
Standard Pulley Sizes
Pulley for Narrow V-Belts for DIN
Pulley for Narrow V-Belts complies with DIN 2217 Part 1.
Fig. 1-18 single-groove
Rz100 f b 1 bw f multi-groove f b
2 e break sharp corners
1
Properties
Dimensions (mm)
Belt section Datum diameter : dw
SPZ
SPZX dw 80
80 dw
SPA
SPAX dw 118
118 dw
SPB
SPBX dw 190
190 dw
34
38
SPC
SPCX dw 315
315 dw bw corresponds to Datum width bd dw corresponds to Datum diameter dd
34
38
(° )
34
38
34
38
7
8
9
10
11
12
4
5
6
1
2
3
Number of belts & pulley width b2 (mm)
Number of belt
SPZ
SPZX
88
100
112
124
136
148
52
64
76
16
28
40
SPA
SPAX
110
125
140
155
170
185
65
80
95
20
35
50 b1 bw c t
11 +0.6
-0
12.7 11.0 2.8
-0 e
12 ± 0.3
Table 1-18 f
8 ± 0.6
15 ± 0.3
10 ± 0.6
-0
24 +0.6
22.0 19.0 4.8
-0
19 ± 0.4
12.5 ± 0.8
25.5 ± 0.5
17.0 ± 1.0
SPB
SPBX
139
158
177
196
215
234
25
44
63
82
101
120
Table 1-19
SPC
SPCX
187
212.5
238
263.5
289
314.5
34
59.5
85
110.5
136
161.5
1-19
Calculation of V-belt drives design 5
1
Properties
1-20
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 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 2-1)
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
Design Flow
3
Select the belt type.
Select the belt type in the selection charts below according to design power and small pulley speed.
Cross section selection chart for Classical V-Belts for RMA
If the intersection locates near the dividing line, select belt type considering other conditions such as pulley cost.
Fig. 2-1
2
Design Cross section selection chart for Classical Raw Edge Cogged V-Belts Fig. 2-2
2-5
Cross section selection chart for Narrow V-Belts for DIN Fig. 2-3
Design Flow
4
Select the pulley size.
Select the small pulley pitch diameter larger than the minimum specified in the Table 2-4.
Inappropriate pulley reduces transmission efficiency and belts' durability significantly.
Minimum pulley pitch diameter Unit : mm
Belt type
Recommended minimum pulley pitch diameter
Allowed minimum pulley pitch diameter
M
50
40
A B C
Table 2-4
D E
95 150 224 355 560
67 118 180 300 450
Calculate the large pulley pitch diameter.
Dp = dp × SR
Dp : Large pulley pitch diameter (mm) dp : Small pulley pitch diameter (mm)
SR : Speed ratio
Difference between pulley outside diameter and pitch diameter is specified in the following table.
Difference between pulley outside diameter and pitch diameter Unit : mm Table 2-5
Belt type
Difference
M A B C D E
Design Flow
5
Determine the belt length.
1) Determine the interim belt pitch length.
Lp' = 2C'+1.57(Dp+dp)
Lp' : Interim belt pitch length (mm)
C' : Interim center distance (mm)
Dp : Large pulley pitch diameter (mm) dp : Small pulley pitch diameter (mm)
2) Select the standard belt length closest to the Lp' from our lineup.
Center distance is calculated from the following formula.
C = b + b 2 − 8 (Dp − dp) 2
8
C : Center distance (mm) b : 2Lp-π(Dp+dp)
Lp : Belt pitch length (mm)
3) If center distance is predetermined, use the following
formula to determine interim belt pitch length.
(Dp − dp) 2
Lp' = 2C + −− (Dp + dp) + −−−−−−−−−−
2 4C
2
Design
2-6
2
Design
Belt length correction factor for Classical V-Belts: K 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
Dp
— dp
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
Dp : Large pulley pitch diameter (mm) dp : Small pulley pitch diameter (mm)
C : Center distance (mm)
Length designation
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
145 ~ 154
A B C D E
0.77
0.82
0.85
0.87
0.89
0.91
0.93
0.94
0.96
0.72
0.76
0.79
0.81
0.83
0.85
0.87
0.89
0.91
0.71
0.73
0.75
0.77
0.78
0.80
0.98
1.01
1.03
1.04
1.05
0.93
0.95
0.97
0.98
0.99
0.82
0.84
0.86
0.87
0.89
1.07 1.01 0.90
1.08 1.03 0.91 0.81
1.10 1.04 0.93 0.82
1.12 1.06 0.94 0.84
1.13 1.07 0.96 0.85
1.15 1.09 0.98 0.87 0.85
1.18 1.11 1.00 0.89 0.87
1.19 1.13 1.02 0.91 0.88
1.21 1.15 1.03 0.92 0.90
1.23 1.17 1.05 0.94 0.91
1.25 1.18 1.07 0.95 0.93
1.27 1.21 1.09 0.98 0.95
1.30 1.24 1.12 1.00 0.98
1.33 1.26 1.14 1.03 1.00
1.35 1.29 1.17 1.05 1.02
1.38 1.31 1.19 1.07 1.04
1.40 1.33 1.21 1.09 1.06
1.35
1.38
1.41
1.22
1.25
1.28
1.11
1.13
1.16
1.08
1.10
1.13
1.44
1.46
1.31
1.33
1.18
1.21
1.16
1.18
Arc of contact correction factor : Kθ
Dp-dp
C
Contact angle on small pulley
θ(°)
0.00 180
Table 2-6
Kθ
390 ~ 419
420 ~ 479
480 ~ 539
540 ~ 600
601 ~ 660
1.00
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
Dp - dp
2C
Contact angle on large pulley : θ=180 + 2sin -1
Dp - dp
2C
Dp : Large pulley pitch diameter (mm) dp : Small pulley pitch 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
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 ~
Pitch length (mm)
500 Lp 970
970 Lp 1500
1500 Lp 2200
2200 Lp 3000
3000 Lp 4000
4000 Lp 5000
5000 Lp 6000
6000 Lp 6800
6800 Lp 8400
8400 Lp 10000
10000 Lp
M
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
Lp× 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 pitch diameter.
(The recommended minimum pulley pitch diameter is specified in Table 2-4.)
2) Calculate the large pulley pitch diameter.
Large pulley pitch diameter : Dp = dp × 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 pitch length.
Lp' = 2 × 300 + 1.57 × (190 + 95) = 1047.5 mm
2) Select the standard belt length closest to the Lp' from Table 1-2.
Belt pitch length 1041mm : Length designation A41 is selected.
Center distance is calculated as follows.
b = 2 × 1041 - 3.14 × (190 + 95) = 1187
C =
1187 + 1187
8
2
- 8 × (190 - 95) 2
=292.9
Center distance : C = 293 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)
Dp-dp
=
190 - 95
C 293
= 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 = 293 - 20 = 273 mm
Take-up allowance = 40 mm
Maximum center distance = 293 + 40 = 333 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
2-12
2
Design
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
θ(°)
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
Kθ : 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 : Kθ
Contact angle on small pulley : θ=180 - 2sin -1
De - de
2C
Contact angle on large pulley : θ=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
Kθ
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
Kθ = 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
M-Section Power Rating
2
Design
Table 2-20 small pulley pitch speed nd(rpm)
Basic power rating for small pulley pitch diameter : Ps
Small pulley pitch diameter dp (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 pitch speed nd(rpm) 50
Basic power rating for small pulley pitch diameter : Ps
Small pulley pitch diameter dp (mm)
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 pitch 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 pitch diameter : Ps
90
Small pulley pitch diameter dp (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 pitch 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 pitch diameter : Ps
90
Small pulley pitch diameter dp (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 pitch 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 pitch diameter : Ps
Small pulley pitch diameter dp (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 pitch 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 pitch diameter : Ps
Small pulley pitch diameter dp (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 pitch 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 pitch diameter : Ps
224 236
Small pulley pitch diameter dp (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 pitch 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 pitch diameter : Ps
Small pulley pitch diameter dp (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 pitch 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 pitch diameter : Ps
Small pulley pitch diameter dp (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 pitch speed nd(rpm) 450 500 560
Basic power rating for small pulley pitch diameter : Ps
Small pulley pitch diameter dp (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
1050
1100
1150
1200
1250
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
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
50.07
- -
-
-
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
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
14.38
15.09
- -
0.08 0.49 0.70 0.86
0.10 0.67 0.95 1.16
0.16 1.02 1.44 1.77
0.31 2.00 2.84 3.49
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
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
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
- 16.18 19.39 23.19 27.24 31.81 36.99 39.88 42.70 48.81 55.17 61.04 67.34
-
-
-
-
-
-
-
-
18.51 22.17 26.47 31.03 36.13 41.86 45.01 48.07 54.59 61.17 66.97
-
17.35 20.79 24.85 29.16 34.01 39.48 42.50 45.46 51.80 58.31 64.20 70.34
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
-
-
-
-
-
-
-
-
- - -
- - - - -
- - - - -
21.85 26.11 31.09 36.30 42.05 48.36 51.76 55.00 61.64
-
- - - - -
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
- - - - -
-
-
-
-
-
- - - - - - - -
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
- - - - - - - - - - - - - -
0.11 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
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 JIS K 6323 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
M
A, B, C, D, E
AX, BX, CX
3V, 5V, 8V
3VX, 5VX
SPZ, SPA, SPB, SPC
SPZX, SPAX, SPBX, SPCX
Length designation
Effective length : Le
Pitch length : Lp
Effective length : Le
Datum length : Ld
Measuring force(N) be bp,bd h1 h2
Fig. 3-2 Measuring pulley dp dd de
Table 3-1
Length calculation formula
Le = 2C + πde
Lp = 2C + πdp
Le = 2C + πde
Ld = 2C + πdd
Pulley dimensions and measuring force of Classical V-Belts for JIS
Belt section M
A
AX
Pitch width : bp
Effective width : be
Pitch diameter : dp
Effective diameter : de
Pulley pitch circumference : πdp
Pulley effective circumference : πde
Angle : α
Distance down to pitch line : h1
Measuring force mm mm mm mm mm mm
° mm
N
9.65
-
63.66
-
200
34
2.7
98
B
BX
C
CX
D
Table 3-2
E
11.95 15.86 21.18 30.78 36.96
95.49 127.32 222.82 381.97 572.96
104.49
300
-
138.32
400
-
236.82
700
-
400.97
1200
-
598.36
1800
-
34
4.5
196
34
5.5
294
34
7.0
736
36
9.5
1373
36
12.7
1765
Pulley dimensions and measuring force of
Maxstar Wedge V-Belts for RMA/MPTA
Belt section
Effective width : be
Effective diameter : de
Pulley effective circumference : πde
Angle : α
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 : πdd
Angle : α
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
M
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
108.0
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
M
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 pitch 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 JIS (M,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 pitch 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
Dp − dp
C
1.17
Dp : Pitch diameter of fl at pulley (mm)
dp : Pitch diameter of V pulley (mm)
C : Center distance (mm)
Table 3-10
Arc of contact correction factor for V-Belt drives
Dp-dp
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 pitch diameter and outside diameter
Belt Section M A B C
Difference between pitch diameter and outside diameter (mm)
5.4
9.0
11.0
14.0
D
19.0
E
25.4
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 JIS
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.
V836-E
ENGLISH
Design Manual
V-Belt
JIS
The information contained in this catalogue is for an informational purpose only.
IN NO EVENT SHALL MITSUBOSHI BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE,
INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOST PROFITS, ARISING OUT OF OR
RELATED TO MITSUBOSHI PRODUCTS NOR FOR ANY DAMAGES ARISING DUE TO ANY
USE OF MITSUBOSHI PRODUCTS NOT IN CONFORMANCE WITH THE INSTRUCTION
PROVIDED BY MITSUBOSHI IN THIS CATALOGUE. MITSUBOSHI SPECIFICALLY DISCLAIMS
ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR
PURPOSE.
V83600501504sg03682903
Belt Application Designing Program can be downloaded at:
https://www.mitsuboshi.co.jp/english/sien/sien_dl.html

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Key features
- Wide range of sizes
- Different cross-sections
- High speed transmission
- Energy saving
- Compact design
- Space saving
- Oil and heat resistance
- Electrical conductivity