

FLENDER RUPEX Pin and Bush Coupling
- Damping, fail-safe pin and bush coupling for medium and higher torques
- Nominal torque range from TKN = 200 Nm up to 1,300,000 Nm with 26 sizes
- Temperature range: from –50 °C to +100 °C
RUPEX couplings are used as flexible compensating couplings in all applications requiring a reliable transmission of torque under harsh operating conditions. The conical seats of the buffer pins facilitate mounting and guarantee maintenance-free operation. The optimized shape of the barrelled buffers allows simple plug-in assembly and low circumferential backlash. Many type variants are offered, e. g. with brake disk, axial play limiting device, or brake motor couplings.
Examples of application
- Mining and Cement: conveyor belts, apron conveyors, bucket elevators, tube mills, rotary kilns, bunker dischargers, vertical mills, bucket excavators, crushers, roller presses, separators, heating technology
- Steel Production: shears, straightening machines
- Cranes: hoisting and luffing gear systems, slewing gear systems, trolley and travel gear systems
- Oil and Gas: pumps, fans, compressors, air condensers
- Power Generation: pumps, fans, compressors, air condensers, generators, cooling towers, water turbines
- Chemicals and Pharmaceuticals: pumps, fans, compressors, driers, lauter tuns, mixers, cooling towers, agitators, reactors
- Plastics and Rubber: single- and double-screw extruders
- Pulp and Paper: woodgrinders, waste paper, wet section, dry section, smoothers and cylinders, reel winders, coating machines, calenders, wastewater purification plants
- Water and Wastewater: aerators, water screw pumps
- Food and Beverage: lauter tuns, reactors, agitators, mixers
- Sugar: generators, extraction plants, countercurrent cossette mixers, diffusers, sugar cane mills
- Passenger Transport: cable cars
Advantages of the product
- Compact design; low weights and mass moments of inertia
- Independent of direction of rotation (suitable for reversing operation)
- Suitable for plug-in assembly (blind assembly, bell housing installation)
- Can be used in potentially explosive atmospheres; certified acc. to 2014/34/EU (ATEX)
Types of RUPEX Pin and Bush Coupling
Type | Description |
RUPEX RWN | Coupling made of grey cast iron |
RUPEX RWS | Coupling made of steel |
RUPEX RWB | Coupling made of grey cast iron with brake drum or brake disk |
RUPEX RBS | Coupling made of steel with brake drum or brake disk |
RUPEX RFN | Coupling made of grey cast iron in flange-shaft variant |
RUPEX RFS | Coupling made of steel in flange-shaft variant |
Further application-related coupling types are available. Please feel free to contact us.
Technical data RUPEX RWN
description | size mm |
rated torque TKN Nm |
speed nKmax min-1 |
hub diameter ND1/ND2 mm |
length LG mm |
RUPEX RWN 105 | 105 | 200 | 7000 | 53/59 | 93 |
RUPEX RWN 125 | 125 | 350 | 6000 | 65/68 | 103 |
RUPEX RWN 144 | 144 | 500 | 5250 | 76/84 | 113 |
RUPEX RWN 162 | 162 | 750 | 4650 | 85/92 | 123,5 |
RUPEX RWN 178 | 178 | 950 | 4200 | 102/108 | 143,5 |
RUPEX RWN 198 | 198 | 1300 | 3750 | 120/128 | 163,5 |
RUPEX RWN 228 | 228 | 2200 | 3300 | 129/140 | 182,5 |
RUPEX RWN 252 | 252 | 2750 | 3000 | 150/160 | 203,5 |
RUPEX RWN 285 | 285 | 4300 | 2650 | 164/175 | 224,5 |
RUPEX RWN 320 | 320 | 5500 | 2350 | 180/192 | 254,5 |
RUPEX RWN 360 | 360 | 7800 | 2100 | 200/210 | 284,5 |
RUPEX RWN 400 | 400 | 12500 | 2050 | 230/230 | 324,5 |
RUPEX RWN 450 | 450 | 18500 | 1800 | 260/260 | 365,5 |
RUPEX RWN 500 | 500 | 25000 | 1600 | 290/290 | 405,5 |
RUPEX RWN 560 | 560 | 39000 | 1450 | 250 300 320 |
446 |
RUPEX RWN 630 | 630 | 52000 | 1280 | 250 300 355 |
486 |
RUPEX RWN 710 | 710 | 84000 | 1150 | 290 330 385 |
527 |
RUPEX RWN 800 | 800 | 110000 | 1000 | 320 360 420 |
587 |
RUPEX RWN 900 | 900 | 150000 | 900 | 360 425 465 |
647,5 |
RUPEX RWN 1000 | 1000 | 195000 | 810 | 395 460 515 |
707,5 |
RUPEX RWN 1120 | 1120 | 270000 | 700 | 360 410 495 560 |
768,5 |
RUPEX RWN 1250 | 1250 | 345000 | 650 | 410 460 540 610 |
848,5 |
RUPEX RWN 1400 | 1400 | 530000 | 570 | 465 525 620 700 |
969 |
RUPEX RWN 1600 | 1600 | 750000 | 500 | 565 625 720 770 |
1089 |
RUPEX RWN 1800 | 1800 | 975000 | 450 | 660 720 820 870 |
1212 |
RUPEX RWN 2000 | 2000 | 1300000 | 400 | 760 820 920 960 |
1332 |
Technical data RUPEX RWS
description | size mm |
rated torque TKN Nm |
speed nKmax min-1 |
hub diameter ND1/ND2 mm |
length LG mm |
RUPEX RWS 105 | 105 | 200 | 10000 | 53/59 | 93 |
RUPEX RWS 125 | 125 | 350 | 9000 | 65/68 | 103 |
RUPEX RWS 144 | 144 | 500 | 7800 | 76/84 | 113 |
RUPEX RWS 162 | 162 | 750 | 6900 | 85/92 | 123,5 |
RUPEX RWS 178 | 178 | 950 | 6300 | 102/108 | 143,5 |
RUPEX RWS 198 | 198 | 1300 | 5600 | 120/128 | 163,5 |
RUPEX RWS 228 | 228 | 2200 | 4900 | 129/140 | 183,5 |
RUPEX RWS 252 | 252 | 2750 | 4400 | 150/160 | 203,5 |
RUPEX RWS 285 | 285 | 4300 | 3900 | 164/175 | 224,5 |
RUPEX RWS 320 | 320 | 5500 | 3500 | 180/192 | 254,5 |
RUPEX RWS 360 | 360 | 7800 | 3100 | 200/210 | 284,5 |
RUPEX RWS 400 | 400 | 12500 | 2800 | 230/230 | 324,5 |
RUPEX RWS 450 | 450 | 18500 | 2500 | 260/260 | 365,5 |
RUPEX RWS 500 | 500 | 25000 | 2200 | 290/290 | 405,5 |
RUPEX RWS 560 | 560 | 39000 | 2000 | 250 300 320 |
446 |
RUPEX RWS 630 | 630 | 52000 | 1800 | 250 300 355 |
486 |
RUPEX RWS 710 | 710 | 84000 | 1600 | 290 330 385 |
527 |
RUPEX RWS 800 | 800 | 110000 | 1400 | 320 360 420 |
587 |
RUPEX RWS 900 | 900 | 150000 | 1250 | 320 360 425 465 |
647,5 |
RUPEX RWS 1000 | 1000 | 195000 | 1100 | 355 395 460 515 |
707,5 |
RUPEX RWS 1120 | 1120 | 270000 | 1000 | 360 410 495 560 |
768,5 |
RUPEX RWS 1250 | 1250 | 345000 | 900 | 410 460 540 610 |
848,5 |
RUPEX RWS 1400 | 1400 | 530000 | 800 | 465 525 620 700 |
969 |
RUPEX RWS 1600 | 1600 | 750000 | 700 | 565 625 720 770 |
1089 |
RUPEX RWS 1800 | 1800 | 975000 | 600 | 660 720 820 870 |
1212 |
RUPEX RWS 2000 | 2000 | 1300000 | 550 | 760 820 920 960 |
1332 |