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Shaft Coupling RfN 5091

Shaft Couplings RfN 5091
Highest transmission values – for heavy duty applications.
Simplified manufacture – only plain shaft and bore diameters with easily achieved surface finish and tolerances are required.

RINGFEDER® RfN 5091

metric inch
CAD d D dw L Ltotal T DG TA
  mm mm mm mm mm Nm mm Nm
  125 215 85 73 200 15000 12 100
  125 215 90 73 200 17500 12 100
  125 215 95 73 200 20000 12 100
  140 300 90 106 220 36700 16 250
  140 300 100 106 220 47000 16 250
  140 300 110 106 220 58700 16 250
  155 263 105 92 230 28900 12 100
  155 263 110 92 230 32400 12 100
  155 263 115 92 230 36200 12 100
  165 290 115 98 240 41000 16 250
  165 290 120 98 240 46000 16 250
  165 290 125 98 240 50700 16 250
  175 300 125 124 265 72800 16 250
  175 300 130 124 265 79900 16 250
  175 300 135 124 265 87300 16 250
  185 330 135 122 265 72000 16 250
  185 330 140 122 265 78000 16 250
  185 330 145 122 265 86000 16 250
  195 350 140 122 280 75000 16 250
  195 350 150 122 280 88000 16 250
  195 350 155 122 280 96000 16 250
  200 350 150 122 290 92500 16 250
  200 350 155 122 290 100000 16 250
  200 350 160 122 290 107000 16 250
  220 370 160 144 310 127000 16 250
  220 370 165 144 310 136000 16 250
  220 370 170 144 310 146500 16 250
  240 405 170 157 350 155000 20 490
  240 405 180 157 350 176000 20 490
  240 405 190 157 350 198000 20 490
  260 430 190 173 390 213000 20 490
  260 430 200 173 390 240000 20 490
  260 430 210 173 390 268000 20 490
  280 460 210 185 430 285000 20 490
  280 460 220 185 430 320000 20 490
  280 460 230 185 430 355000 20 490
  300 485 230 189 445 341000 20 490
  300 485 240 189 445 376000 20 490
  300 485 245 189 445 394000 20 490
  320 520 240 197 460 378000 20 490
  320 520 250 197 460 415000 20 490
  320 520 260 197 460 451000 20 490
  340 570 250 215 480 489500 24 840
  340 570 260 215 480 530000 24 840
  340 570 270 215 480 578000 24 840
  350 580 270 215 490 556000 24 840
  350 580 280 215 490 604000 24 840
  350 580 285 215 490 629000 24 840
  360 590 280 219 500 612000 24 840
  360 590 290 219 500 663000 24 840
  360 590 295 219 500 689000 24 840
  380 645 290 219 530 618000 24 840
  380 645 300 219 530 668000 24 840
  380 645 310 219 530 719000 24 840
  390 660 300 227 540 708000 24 840
  390 660 310 227 540 762000 24 840
  390 660 320 227 540 814500 24 840
  400 680 315 227 540 765000 24 840
  400 680 320 227 540 788000 24 840
  400 680 330 227 540 845000 24 840
  420 690 330 253 580 999000 24 840
  420 690 340 253 580 1068000 24 840
  420 690 350 253 580 1140000 24 840
  440 750 340 269 600 1058000 27 1250
  440 750 350 269 600 1130000 27 1250
  440 750 360 269 600 1204000 27 1250
  460 770 360 269 620 1320000 27 1250
  460 770 370 269 620 1420000 27 1250
  460 770 380 269 620 1500000 27 1250
  480 800 380 291 645 1535000 27 1250
  480 800 390 291 645 1626000 27 1250
  480 800 400 291 645 1720000 27 1250
  500 850 400 291 670 1750000 27 1250
  500 850 410 291 670 1840000 27 1250
  500 850 420 291 670 1940000 27 1250
CAD d D dw L Ltotal T DG TA
  inch inch inch inch inch ft-lbs mm ft-lbs
  4.921 8.465 3.346 2.874 7.874 11063 M12 75
  4.921 8.465 3.543 2.874 7.874 12907 M12 75
  4.921 8.465 3.740 2.874 7.874 14751 M12 75
  5.512 11.811 3.543 4.173 8.661 27069 M16 185
  5.512 11.811 3.937 4.173 8.661 34665 M16 185
  5.512 11.811 4.331 4.173 8.661 43295 M16 185
  6.102 10.354 4.134 3.622 9.055 21316 M12 75
  6.102 10.354 4.331 3.622 9.055 23897 M12 75
  6.102 10.354 4.528 3.622 9.055 26700 M12 75
  6.496 11.417 4.528 3.858 9.449 30240 M16 185
  6.496 11.417 4.724 3.858 9.449 33928 M16 185
  6.496 11.417 4.921 3.858 9.449 37394 M16 185
  6.890 11.811 4.921 4.882 10.433 53695 M16 185
  6.890 11.811 5.118 4.882 10.433 58931 M16 185
  6.890 11.811 5.315 4.882 10.433 64389 M16 185
  7.283 12.992 5.315 4.803 10.433 53104 M16 185
  7.283 12.992 5.512 4.803 10.433 57530 M16 185
  7.283 12.992 5.709 4.803 10.433 63430 M16 185
  7.677 13.780 5.512 4.803 11.024 55317 M16 185
  7.677 13.780 5.906 4.803 11.024 64905 M16 185
  7.677 13.780 6.102 4.803 11.024 70806 M16 185
  7.874 13.780 5.906 4.803 11.417 68224 M16 185
  7.874 13.780 6.102 4.803 11.417 73756 M16 185
  7.874 13.780 6.299 4.803 11.417 78919 M16 185
  8.661 14.567 6.299 5.669 12.205 93670 M16 185
  8.661 14.567 6.496 5.669 12.205 100308 M16 185
  8.661 14.567 6.693 5.669 12.205 108053 M16 185
  9.449 15.945 6.693 6.181 13.780 114322 M20 361
  9.449 15.945 7.087 6.181 13.780 129811 M20 361
  9.449 15.945 7.480 6.181 13.780 146037 M20 361
  10.236 16.929 7.480 6.811 15.354 157101 M20 361
  10.236 16.929 7.874 6.811 15.354 177015 M20 361
  10.236 16.929 8.268 6.811 15.354 197667 M20 361
  11.024 18.110 8.268 7.283 16.929 210205 M20 361
  11.024 18.110 8.661 7.283 16.929 236020 M20 361
  11.024 18.110 9.055 7.283 16.929 261835 M20 361
  11.811 19.094 9.055 7.441 17.520 251509 M20 361
  11.811 19.094 9.449 7.441 17.520 277323 M20 361
  11.811 19.094 9.646 7.441 17.520 290599 M20 361
  12.598 20.472 9.449 7.756 18.110 278798 M20 361
  12.598 20.472 9.843 7.756 18.110 306088 M20 361
  12.598 20.472 10.236 7.756 18.110 332641 M20 361
  13.386 22.441 9.843 8.465 18.898 361037 M24 620
  13.386 22.441 10.236 8.465 18.898 390908 M24 620
  13.386 22.441 10.630 8.465 18.898 426311 M24 620
  13.780 22.835 10.630 8.465 19.291 410085 M24 620
  13.780 22.835 11.024 8.465 19.291 445488 M24 620
  13.780 22.835 11.220 8.465 19.291 463927 M24 620
  14.173 23.228 11.024 8.622 19.685 451388 M24 620
  14.173 23.228 11.417 8.622 19.685 489004 M24 620
  14.173 23.228 11.614 8.622 19.685 508180 M24 620
  14.961 25.394 11.417 8.622 20.866 455813 M24 620
  14.961 25.394 11.811 8.622 20.866 492691 M24 620
  14.961 25.394 12.205 8.622 20.866 530307 M24 620
  15.354 25.984 11.811 8.937 21.260 522194 M24 620
  15.354 25.984 12.205 8.937 21.260 562022 M24 620
  15.354 25.984 12.598 8.937 21.260 600744 M24 620
  15.748 26.772 12.402 8.937 21.260 564235 M24 620
  15.748 26.772 12.598 8.937 21.260 581199 M24 620
  15.748 26.772 12.992 8.937 21.260 623240 M24 620
  16.535 27.165 12.992 9.961 22.835 736825 M24 620
  16.535 27.165 13.386 9.961 22.835 787716 M24 620
  16.535 27.165 13.780 9.961 22.835 840821 M24 620
  17.323 29.528 13.386 10.591 23.622 780341 M27 920
  17.323 29.528 13.780 10.591 23.622 833445 M27 920
  17.323 29.528 14.173 10.591 23.622 888025 M27 920
  18.110 30.315 14.173 10.591 24.409 973582 M27 920
  18.110 30.315 14.567 10.591 24.409 1047338 M27 920
  18.110 30.315 14.961 10.591 24.409 1106343 M27 920
  18.898 31.496 14.961 11.457 25.394 1132158 M27 920
  18.898 31.496 15.354 11.457 25.394 1199276 M27 920
  18.898 31.496 15.748 11.457 25.394 1268607 M27 920
  19.685 33.465 15.748 11.457 26.378 1290734 M27 920
  19.685 33.465 16.142 11.457 26.378 1357114 M27 920
  19.685 33.465 16.535 11.457 26.378 1430870 M27 920

Characteristics

Shrink discs are the modern method for creating a mechanical shrink fit. The shrink disc consists of either one or two thrust rings with tapered bores and a mating tapered inner ring. By tightening locking screws the thrust rings are drawn together compressing the inner ring and applying pressure to the outside of the hub clamping it to the shaft. Being positioned around the hub there is only one interface transmitting the loads giving the shrink disc method distinct advantages such as offering the possibility of very concentric and well balanced connections that are suited to high speed applications. Traditional shrink fits require complicated calculations, close machining tolerances and fine surface finishes, they also need considerable effort with mounting and removal. The Shrink Disc connection has none of these disadvantages and is better than any of the other usual connection methods with regard to fatigue strength under alternating torsional stress.

  • Unlimited range of applications – RINGFEDER® Shrink Disc connections are suitable for securing all types of hubs onto shafts and axles. Replacing traditional shrink fits, keys and polygon connections, splined shafts etc. So cog wheels and sprockets, levers, lifters, cam discs, pulleys or brake discs, balance wheels, couplings, slip on gear mechanisms, flanges, pulley wheels and rotors can be attached absolutely reliable.
  • Heavy design – for highest transmission values.
  • Slitted inner ring – low forces and pressures on hub and shaft.
  • Compensation of small tolerance errors -please contact our engineers.
  • Maximum reliability – suitable for static, dynamic and impact loads.
  • Simplified manufacture – only plain shaft and bore diameters with easily achieved surface finish and tolerances are required.
  • Easy replacement - the RINGFEDER® shrink disc is free from any form fit.
  • Easy mounting – no steps, keyways, splines are required, therefore hubs can be located and locked at any point or angle on the shaft. RINGFEDER® Shrink Discs use standard screws tightened with standard tools. No additional machining or fitting work is required.
  • Easy removal – after loosening the locking screws, the RINGFEDER® Shrink Disc will self release and the hub will move freely on the shaft.
  • Low susceptibility to contamination – when the locking screws are tightened the functional contact surfaces are pressed firmly together and prevent the ingress of dirt and moisture.

Surface finishes

For shaft Ra ≤ 3,2 μm.

Tolerances

For shaft see table at right

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