KTR RUFLEX-torque limiter Operating/Mounting Instructions
KTR RUFLEX-torque limiter is a safety system that protects components in a drive train from damage. It features positive locking and limits torque, acting as an overload system. It's designed for various applications and can be assembled with different couplings like ROTEX® and BoWex®.
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RUFLEX® Torque limiter
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
46010 EN
1 of 26
9
Please observe protection
note ISO 16016.
Drawn: 2019-03-05 Pz Replacing: KTR-N dated 2011-05-24
Verified: 2019-03-06 Pz Replaced by:
RUFLEX®
Torque limiter
RUFLEX®
RUFLEX® with sprocket
RUFLEX® max.
RUFLEX® with ROTEX®
RUFLEX® with BoWex®
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
46010 EN
1 of 26
9
Please observe protection
note ISO 16016.
Drawn: 2019-03-05 Pz Replacing: KTR-N dated 2011-05-24
Verified: 2019-03-06 Pz Replaced by:
RUFLEX®
Torque limiter
RUFLEX®
RUFLEX® with sprocket
RUFLEX® max.
RUFLEX® with ROTEX®
RUFLEX® with BoWex®
RUFLEX® Torque limiter
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
46010 EN
2 of 26
9
Please observe protection
note ISO 16016.
Drawn: 2019-03-05 Pz Replacing: KTR-N dated 2011-05-24
Verified: 2019-03-06 Pz Replaced by:
RUFLEX® is a torque limiting and load-holding overload system with positive locking. It protects
adjacent components in the drive train from damage.
1 Technical data 3
2 Advice 8
2.1 General advice 8
2.2 Safety and advice symbols 8
2.3 General hazard warnings 8
2.4 Intended use 9
2.5 Selection of torque limiter 9
2.6 Reference to EC Machinery Directive 2006/42/EC 9
3 Storage, transport and packaging 9
3.1 Storage 9
3.2 Transport and packaging 9
4 Assembly 10
4.1 Components of RUFLEX® 10
4.2 Layering of disk springs 12
4.3 Advice for finish bore 12
4.4 Assembly (general) 13
4.5 Centering plain bush 14
4.6 Assembly of RUFLEX® torque limiter 14
4.7 Assembly of RUFLEX® torque limiter with ROTEX® coupling 15
4.8 Assembly of RUFLEX® torque limiter with BoWex® coupling 16
4.9 Disassembly of the torque limiter / replacement of single parts 16
4.10 Assembly of the torque limiter 18
5 Adjustment of torque 18
5.1 Initial setting resp. re-setting of slipping torque 18
5.2 Setting diagrammes 21
6 Breakdowns, causes and elimination 25
7 Disposal 26
8 Maintenance and service 26
9 Spares inventory, customer service addresses 26
Table of contents
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
46010 EN
2 of 26
9
Please observe protection
note ISO 16016.
Drawn: 2019-03-05 Pz Replacing: KTR-N dated 2011-05-24
Verified: 2019-03-06 Pz Replaced by:
RUFLEX® is a torque limiting and load-holding overload system with positive locking. It protects
adjacent components in the drive train from damage.
1 Technical data 3
2 Advice 8
2.1 General advice 8
2.2 Safety and advice symbols 8
2.3 General hazard warnings 8
2.4 Intended use 9
2.5 Selection of torque limiter 9
2.6 Reference to EC Machinery Directive 2006/42/EC 9
3 Storage, transport and packaging 9
3.1 Storage 9
3.2 Transport and packaging 9
4 Assembly 10
4.1 Components of RUFLEX® 10
4.2 Layering of disk springs 12
4.3 Advice for finish bore 12
4.4 Assembly (general) 13
4.5 Centering plain bush 14
4.6 Assembly of RUFLEX® torque limiter 14
4.7 Assembly of RUFLEX® torque limiter with ROTEX® coupling 15
4.8 Assembly of RUFLEX® torque limiter with BoWex® coupling 16
4.9 Disassembly of the torque limiter / replacement of single parts 16
4.10 Assembly of the torque limiter 18
5 Adjustment of torque 18
5.1 Initial setting resp. re-setting of slipping torque 18
5.2 Setting diagrammes 21
6 Breakdowns, causes and elimination 25
7 Disposal 26
8 Maintenance and service 26
9 Spares inventory, customer service addresses 26
Table of contents
RUFLEX® Torque limiter
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
46010 EN
3 of 26
9
Please observe protection
note ISO 16016.
Drawn: 2019-03-05 Pz Replacing: KTR-N dated 2011-05-24
Verified: 2019-03-06 Pz Replaced by:
Illustration 1: RUFLEX® size 00 Illustration 2: RUFLEX® size 0 to 5 Illustration 3: RUFLEX® size 6 to 9
Table 1: Technical data and dimensions
Size Max. speed
[rpm]
Torque [Nm] Dimensions [mm]
Bore d D 2) D1
1TF 2TF 3TF 3) Pilot bore Max.
00 10000 (0.5) 5) 1 - 3 2 - 5 - - 10 21 -
0 8500 2 - 10 4 - 20 - - 20 1) 35 45
01 6600 5 - 35 10 - 70 - - 22 40 40
1 5600 20 - 75 40 - 150 130 - 200 - 25 44 45
2 4300 25 - 140 50 - 280 250 - 400 - 35 58 58
3 3300 50 - 300 100 - 600 550 - 800 - 45 72 75
4 2700 90 - 600 180 - 1200 1100 - 1600 - 55 85 90
5 2200 400 - 800 800 - 1600 1400 - 2100 - 65 98 102
6 1900 300 - 1200 600 - 2400 - 38 80 116 120
7 1600 600 - 2200 1200 - 4400 - 45 100 144 150
8 1300 900 - 3400 1800 - 6800 - 58 120 170 180
9 1000 2500 - 6000 6000 - 12000 - 65 140 237 225
Size
Dimensions [mm]
DA B Drive component b1 s1 L Thread for setscrews
Min. Max. t G
00 30 8.5 2 6 2.5 31 3 M4
0 45 8.5 2 6 2.5 33 3 M4
01 58 16 3 8 3 45 4 M5
1 68 17 3 10 3 52 5 M5
2 88 19 4 12 3 57 5 M6
3 115 21 5 15 4 68 5 M6
4 140 23 6 18 4 78 5 M8
5 170 29 8 20 5 92 8 M8
6 200 31 8 23 5 102 8 M8
7 240 33 8 25 5 113 8 M10
8 285 35 8 25 5 115 8 M10
9 350 53 16 28 6 162 11 M12
1) Finish bore exceeding Ø19, feather keyway according to DIN 6885 sheet 3
2) Bore tolerance (drive component): F8 with size 00 - 4
H8 with size 5 - 9
3) With clamping setting nut to be used on types limited in dimensions only
4) Hexagon nuts with size 9
5) With special disk spring
1 Technical data
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
46010 EN
3 of 26
9
Please observe protection
note ISO 16016.
Drawn: 2019-03-05 Pz Replacing: KTR-N dated 2011-05-24
Verified: 2019-03-06 Pz Replaced by:
Illustration 1: RUFLEX® size 00 Illustration 2: RUFLEX® size 0 to 5 Illustration 3: RUFLEX® size 6 to 9
Table 1: Technical data and dimensions
Size Max. speed
[rpm]
Torque [Nm] Dimensions [mm]
Bore d D 2) D1
1TF 2TF 3TF 3) Pilot bore Max.
00 10000 (0.5) 5) 1 - 3 2 - 5 - - 10 21 -
0 8500 2 - 10 4 - 20 - - 20 1) 35 45
01 6600 5 - 35 10 - 70 - - 22 40 40
1 5600 20 - 75 40 - 150 130 - 200 - 25 44 45
2 4300 25 - 140 50 - 280 250 - 400 - 35 58 58
3 3300 50 - 300 100 - 600 550 - 800 - 45 72 75
4 2700 90 - 600 180 - 1200 1100 - 1600 - 55 85 90
5 2200 400 - 800 800 - 1600 1400 - 2100 - 65 98 102
6 1900 300 - 1200 600 - 2400 - 38 80 116 120
7 1600 600 - 2200 1200 - 4400 - 45 100 144 150
8 1300 900 - 3400 1800 - 6800 - 58 120 170 180
9 1000 2500 - 6000 6000 - 12000 - 65 140 237 225
Size
Dimensions [mm]
DA B Drive component b1 s1 L Thread for setscrews
Min. Max. t G
00 30 8.5 2 6 2.5 31 3 M4
0 45 8.5 2 6 2.5 33 3 M4
01 58 16 3 8 3 45 4 M5
1 68 17 3 10 3 52 5 M5
2 88 19 4 12 3 57 5 M6
3 115 21 5 15 4 68 5 M6
4 140 23 6 18 4 78 5 M8
5 170 29 8 20 5 92 8 M8
6 200 31 8 23 5 102 8 M8
7 240 33 8 25 5 113 8 M10
8 285 35 8 25 5 115 8 M10
9 350 53 16 28 6 162 11 M12
1) Finish bore exceeding Ø19, feather keyway according to DIN 6885 sheet 3
2) Bore tolerance (drive component): F8 with size 00 - 4
H8 with size 5 - 9
3) With clamping setting nut to be used on types limited in dimensions only
4) Hexagon nuts with size 9
5) With special disk spring
1 Technical data
RUFLEX® Torque limiter
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
46010 EN
4 of 26
9
Please observe protection
note ISO 16016.
Drawn: 2019-03-05 Pz Replacing: KTR-N dated 2011-05-24
Verified: 2019-03-06 Pz Replaced by:
Illustration 4: RUFLEX® with sprocket
Table 2: Technical data and dimensions
Size Max. speed [rpm] Torque [Nm] Dimensions [mm]
1TF 2TF 3TF 1) Max. bore d D1 DA
01 6600 5 - 35 10 - 70 - 22 40 58
1 5600 20 - 75 40 - 150 130 - 200 25 45 68
2 4300 25 - 140 50 - 280 250 - 400 35 58 88
3 3300 50 - 300 100 - 600 550 - 800 45 75 115
4 2700 90 - 600 180 - 1200 1100 - 1600 55 90 140
Size
Dimensions [mm]
B s1 L Thread for setscrews Standard sprocket 2)
t G
01 16 3 45 4 M5 06 B-1 (3/8 x 7/32) z = 23
1 17 3 52 5 M5 08 B-1 (1/2 x 5/16) z = 22
2 19 3 57 5 M6 08 B-1 (1/2 x 5/16) z = 27
3 21 4 68 5 M6 12 B-1 (3/4 x 7/16) z = 22
4 23 4 78 5 M8 16 B-1 (1 x 17,02) z = 21
1) With clamping setting nut to be used on types limited in dimensions only
2) Number of teeth required at the minimum. Other sprockets available on request.
1 Technical data
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
46010 EN
4 of 26
9
Please observe protection
note ISO 16016.
Drawn: 2019-03-05 Pz Replacing: KTR-N dated 2011-05-24
Verified: 2019-03-06 Pz Replaced by:
Illustration 4: RUFLEX® with sprocket
Table 2: Technical data and dimensions
Size Max. speed [rpm] Torque [Nm] Dimensions [mm]
1TF 2TF 3TF 1) Max. bore d D1 DA
01 6600 5 - 35 10 - 70 - 22 40 58
1 5600 20 - 75 40 - 150 130 - 200 25 45 68
2 4300 25 - 140 50 - 280 250 - 400 35 58 88
3 3300 50 - 300 100 - 600 550 - 800 45 75 115
4 2700 90 - 600 180 - 1200 1100 - 1600 55 90 140
Size
Dimensions [mm]
B s1 L Thread for setscrews Standard sprocket 2)
t G
01 16 3 45 4 M5 06 B-1 (3/8 x 7/32) z = 23
1 17 3 52 5 M5 08 B-1 (1/2 x 5/16) z = 22
2 19 3 57 5 M6 08 B-1 (1/2 x 5/16) z = 27
3 21 4 68 5 M6 12 B-1 (3/4 x 7/16) z = 22
4 23 4 78 5 M8 16 B-1 (1 x 17,02) z = 21
1) With clamping setting nut to be used on types limited in dimensions only
2) Number of teeth required at the minimum. Other sprockets available on request.
1 Technical data
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Key Features
- Torque limiting
- Load-holding
- Positive locking
- Overload protection
- Various sizes
- ROTEX® coupling compatibility
- BoWex® coupling compatibility
- Sprocket compatibility
- Easy assembly and disassembly
- Adjustable slipping torque
Related manuals
Frequently Answers and Questions
What is the intended use of the KTR RUFLEX-torque limiter?
The RUFLEX-torque limiter is designed to protect components in a drive train from damage. It limits torque and acts as an overload system with positive locking. It can be used in various applications with different couplings like ROTEX® and BoWex®. Refer to the technical data in Chapter 1 of the manual.
How do I assemble the KTR RUFLEX-torque limiter?
The assembly process depends on the specific configuration and size of the RUFLEX-torque limiter. Refer to Chapters 4 and 5 of the manual for detailed instructions.
How do I adjust the slipping torque of the KTR RUFLEX-torque limiter?
The slipping torque can be adjusted using the torque setting screws or setting screws for disk springs. Refer to Chapter 5 of the manual for precise instructions on adjusting the slipping torque.
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