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Shrink Disc RfN 4023 Heavy Duty Series

Simplified manufacture – only plain shaft and bore diameters with easily achieved surface finish and tolerances are required. Heavy duty series for high torque and bending moment.
Easy adjustability - Easy mounting - Easy removal - Low susceptibility to contamination - Highest reliability

This product is available in the following configurations: SDA, SDB, SDC and SDD.

RINGFEDER® RfN 4023

CAD data download is available after login.
metric inch
CAD Typ d D d1 G L2 T nSc screws norm FSc DG TA
    mm mm mm mm mm Nm Stück     mm Nm
  50 40 115 84 53 30 1400 7 ISO 4014/4017 10.9 12 100
  50 45 115 84 53 30 2200 7 ISO 4014/4017 10.9 12 100
  50 50 115 84 53 30 3300 7 ISO 4014/4017 10.9 12 100
  60 50 120 94 63 34 2300 9 ISO 4014/4017 10.9 12 100
  60 55 120 94 63 34 3500 9 ISO 4014/4017 10.9 12 100
  60 60 120 94 63 34 4700 9 ISO 4014/4017 10.9 12 100
  70 60 155 112 74 40 5800 8 ISO 4014/4017 10.9 16 250
  70 65 155 112 74 40 7600 8 ISO 4014/4017 10.9 16 250
  70 70 155 112 74 40 9400 8 ISO 4014/4017 10.9 16 250
  80 70 167 130 84 44 8000 9 ISO 4014/4017 10.9 16 250
  80 75 167 130 84 44 10000 9 ISO 4014/4017 10.9 16 250
  80 80 167 130 84 44 12000 9 ISO 4014/4017 10.9 16 250
  90 80 185 144 94 50 12000 12 ISO 4014/4017 10.9 16 250
  90 85 185 144 94 50 15000 12 ISO 4014/4017 10.9 16 250
  90 90 185 144 94 50 18000 12 ISO 4014/4017 10.9 16 250
  100 90 197 156 104 54 16000 14 ISO 4014/4017 10.9 16 250
  100 95 197 156 104 54 19000 14 ISO 4014/4017 10.9 16 250
  100 100 197 156 104 54 23000 14 ISO 4014/4017 10.9 16 250
  110 100 215 166 116 58 22000 10 ISO 4014/4017 10.9 20 490
  110 105 215 166 116 58 26000 10 ISO 4014/4017 10.9 20 490
  110 110 215 166 116 58 27000 10 ISO 4014/4017 10.9 20 490
  120 110 230 186 126 65 33000 14 ISO 4014/4017 10.9 20 490
  120 115 230 186 126 65 38000 14 ISO 4014/4017 10.9 20 490
  120 120 230 186 126 65 43000 14 ISO 4014/4017 10.9 20 490
  140 120 290 216 146 76 39000 16 ISO 4014/4017 10.9 20 490
  140 130 290 216 146 76 50000 16 ISO 4014/4017 10.9 20 490
  140 140 290 216 146 76 56000 16 ISO 4014/4017 10.9 20 490
  160 140 320 234 166 83 64000 14 ISO 4014/4017 10.9 24 850
  160 150 320 234 166 83 77000 14 ISO 4014/4017 10.9 24 850
  160 160 320 234 166 83 77000 14 ISO 4014/4017 10.9 24 850
  180 160 340 276 186 94 85000 16 ISO 4014/4017 10.9 24 850
  180 170 340 276 186 94 101000 16 ISO 4014/4017 10.9 24 850
  180 180 340 276 186 94 104000 16 ISO 4014/4017 10.9 24 850
  200 180 370 290 206 96 114000 16 ISO 4014/4017 10.9 27 1250
  200 190 370 290 206 96 133000 16 ISO 4014/4017 10.9 27 1250
  200 200 370 290 206 96 144000 16 ISO 4014/4017 10.9 27 1250
  220 200 405 320 226 97 159000 18 ISO 4014/4017 10.9 27 1250
  220 210 405 320 226 97 178000 18 ISO 4014/4017 10.9 27 1250
  220 220 405 320 226 97 178000 18 ISO 4014/4017 10.9 27 1250
  240 220 430 340 246 110 211000 20 ISO 4014/4017 10.9 27 1250
  240 230 430 340 246 110 211000 20 ISO 4014/4017 10.9 27 1250
  240 240 430 340 246 110 211000 20 ISO 4014/4017 10.9 27 1250
  260 240 460 356 286 119 234000 21 ISO 4014/4017 10.9 27 1250
  260 250 460 356 286 119 234000 21 ISO 4014/4017 10.9 27 1250
  260 260 460 356 286 119 232000 21 ISO 4014/4017 10.9 27 1250
  280 260 485 360 306 125 234000 21 ISO 4014/4017 10.9 27 1250
  280 270 485 360 306 125 234000 21 ISO 4014/4017 10.9 27 1250
  280 280 485 360 306 125 234000 21 ISO 4014/4017 10.9 27 1250
  300 280 520 380 330 130 247000 21 ISO 4014/4017 10.9 27 1250
  300 290 520 380 330 130 247000 21 ISO 4014/4017 10.9 27 1250
  300 300 520 380 330 130 247000 21 ISO 4014/4017 10.9 27 1250
  320 300 550 402 350 136 299000 24 ISO 4014/4017 10.9 27 1250
  320 310 550 402 350 136 299000 24 ISO 4014/4017 10.9 27 1250
  320 320 550 402 350 136 299000 24 ISO 4014/4017 10.9 27 1250
  340 320 570 424 370 142 315000 24 ISO 4014/4017 10.9 27 1250
  340 330 570 424 370 142 315000 24 ISO 4014/4017 10.9 27 1250
  340 340 570 424 370 142 315000 24 ISO 4014/4017 10.9 27 1250
  360 340 610 454 400 147 410000 24 ISO 4014/4017 10.9 30 1700
  360 350 610 454 400 147 410000 24 ISO 4014/4017 10.9 30 1700
  360 360 610 454 400 147 410000 24 ISO 4014/4017 10.9 30 1700
  390 360 630 486 430 167 439000 24 ISO 4014/4017 10.9 30 1700
  390 380 630 486 430 167 439000 24 ISO 4014/4017 10.9 30 1700
  390 390 630 486 430 167 439000 24 ISO 4014/4017 10.9 30 1700
  420 390 670 506 450 175 457000 24 ISO 4014/4017 10.9 30 1700
  420 410 670 506 450 175 457000 24 ISO 4014/4017 10.9 30 1700
  420 420 670 506 450 175 457000 24 ISO 4014/4017 10.9 30 1700
  440 400 700 534 470 175 562000 28 ISO 4014/4017 10.9 30 1700
  440 420 700 534 470 175 562000 28 ISO 4014/4017 10.9 30 1700
  440 440 700 534 470 175 562000 28 ISO 4014/4017 10.9 30 1700
CAD Typ d D d1 G L2 T nSc screws norm FSc DG TA
  inch inch inch inch inch ft-lbs pcs. mm ft-lbs
  50 1.575 4.528 3.307 2.087 1.181 1033 7 ISO 4014/4017 10.9 M12 75
  50 1.772 4.528 3.307 2.087 1.181 1623 7 ISO 4014/4017 10.9 M12 75
  50 1.969 4.528 3.307 2.087 1.181 2434 7 ISO 4014/4017 10.9 M12 75
  60 1.969 4.724 3.701 2.480 1.339 1696 9 ISO 4014/4017 10.9 M12 75
  60 2.165 4.724 3.701 2.480 1.339 2581 9 ISO 4014/4017 10.9 M12 75
  60 2.362 4.724 3.701 2.480 1.339 3467 9 ISO 4014/4017 10.9 M12 75
  70 2.362 6.102 4.409 2.913 1.575 4278 8 ISO 4014/4017 10.9 M16 185
  70 2.559 6.102 4.409 2.913 1.575 5605 8 ISO 4014/4017 10.9 M16 185
  70 2.756 6.102 4.409 2.913 1.575 6933 8 ISO 4014/4017 10.9 M16 185
  80 2.756 6.575 5.118 3.307 1.732 5900 9 ISO 4014/4017 10.9 M16 185
  80 2.953 6.575 5.118 3.307 1.732 7376 9 ISO 4014/4017 10.9 M16 185
  80 3.150 6.575 5.118 3.307 1.732 8851 9 ISO 4014/4017 10.9 M16 185
  90 3.150 7.283 5.669 3.701 1.969 8851 12 ISO 4014/4017 10.9 M16 185
  90 3.346 7.283 5.669 3.701 1.969 11063 12 ISO 4014/4017 10.9 M16 185
  90 3.543 7.283 5.669 3.701 1.969 13276 12 ISO 4014/4017 10.9 M16 185
  100 3.543 7.756 6.142 4.094 2.126 11801 14 ISO 4014/4017 10.9 M16 185
  100 3.740 7.756 6.142 4.094 2.126 14014 14 ISO 4014/4017 10.9 M16 185
  100 3.937 7.756 6.142 4.094 2.126 16964 14 ISO 4014/4017 10.9 M16 185
  110 3.937 8.465 6.535 4.567 2.283 16226 10 ISO 4014/4017 10.9 M20 361
  110 4.134 8.465 6.535 4.567 2.283 19177 10 ISO 4014/4017 10.9 M20 361
  110 4.331 8.465 6.535 4.567 2.283 19914 10 ISO 4014/4017 10.9 M20 361
  120 4.331 9.055 7.323 4.961 2.559 24340 14 ISO 4014/4017 10.9 M20 361
  120 4.528 9.055 7.323 4.961 2.559 28027 14 ISO 4014/4017 10.9 M20 361
  120 4.724 9.055 7.323 4.961 2.559 31715 14 ISO 4014/4017 10.9 M20 361
  140 4.724 11.417 8.504 5.748 2.992 28765 16 ISO 4014/4017 10.9 M20 361
  140 5.118 11.417 8.504 5.748 2.992 36878 16 ISO 4014/4017 10.9 M20 361
  140 5.512 11.417 8.504 5.748 2.992 41303 16 ISO 4014/4017 10.9 M20 361
  160 5.512 12.598 9.213 6.535 3.268 47204 14 ISO 4014/4017 10.9 M24 627
  160 5.906 12.598 9.213 6.535 3.268 56792 14 ISO 4014/4017 10.9 M24 627
  160 6.299 12.598 9.213 6.535 3.268 56792 14 ISO 4014/4017 10.9 M24 627
  180 6.299 13.386 10.866 7.323 3.701 62693 16 ISO 4014/4017 10.9 M24 627
  180 6.693 13.386 10.866 7.323 3.701 74494 16 ISO 4014/4017 10.9 M24 627
  180 7.087 13.386 10.866 7.323 3.701 76706 16 ISO 4014/4017 10.9 M24 627
  200 7.087 14.567 11.417 8.110 3.780 84082 16 ISO 4014/4017 10.9 M27 920
  200 7.480 14.567 11.417 8.110 3.780 98096 16 ISO 4014/4017 10.9 M27 920
  200 7.874 14.567 11.417 8.110 3.780 106209 16 ISO 4014/4017 10.9 M27 920
  220 7.874 15.945 12.598 8.898 3.819 117272 18 ISO 4014/4017 10.9 M27 920
  220 8.268 15.945 12.598 8.898 3.819 131286 18 ISO 4014/4017 10.9 M27 920
  220 8.661 15.945 12.598 8.898 3.819 131286 18 ISO 4014/4017 10.9 M27 920
  240 8.661 16.929 13.386 9.685 4.331 155626 20 ISO 4014/4017 10.9 M27 920
  240 9.055 16.929 13.386 9.685 4.331 155626 20 ISO 4014/4017 10.9 M27 920
  240 9.449 16.929 13.386 9.685 4.331 155626 20 ISO 4014/4017 10.9 M27 920
  260 9.449 18.110 14.016 11.260 4.685 172590 21 ISO 4014/4017 10.9 M27 920
  260 9.843 18.110 14.016 11.260 4.685 172590 21 ISO 4014/4017 10.9 M27 920
  260 10.236 18.110 14.016 11.260 4.685 171114 21 ISO 4014/4017 10.9 M27 920
  280 10.236 19.094 14.173 12.047 4.921 172590 21 ISO 4014/4017 10.9 M27 920
  280 10.630 19.094 14.173 12.047 4.921 172590 21 ISO 4014/4017 10.9 M27 920
  280 11.024 19.094 14.173 12.047 4.921 172590 21 ISO 4014/4017 10.9 M27 920
  300 11.024 20.472 14.961 12.992 5.118 182178 21 ISO 4014/4017 10.9 M27 920
  300 11.417 20.472 14.961 12.992 5.118 182178 21 ISO 4014/4017 10.9 M27 920
  300 11.811 20.472 14.961 12.992 5.118 182178 21 ISO 4014/4017 10.9 M27 920
  320 11.811 21.654 15.827 13.780 5.354 220531 24 ISO 4014/4017 10.9 M27 920
  320 12.205 21.654 15.827 13.780 5.354 220531 24 ISO 4014/4017 10.9 M27 920
  320 12.598 21.654 15.827 13.780 5.354 220531 24 ISO 4014/4017 10.9 M27 920
  340 12.598 22.441 16.693 14.567 5.591 232332 24 ISO 4014/4017 10.9 M27 920
  340 12.992 22.441 16.693 14.567 5.591 232332 24 ISO 4014/4017 10.9 M27 920
  340 13.386 22.441 16.693 14.567 5.591 232332 24 ISO 4014/4017 10.9 M27 920
  360 13.386 24.016 17.874 15.748 5.787 302400 24 ISO 4014/4017 10.9 M30 1250
  360 13.780 24.016 17.874 15.748 5.787 302400 24 ISO 4014/4017 10.9 M30 1250
  360 14.173 24.016 17.874 15.748 5.787 302400 24 ISO 4014/4017 10.9 M30 1250
  390 14.173 24.803 19.134 16.929 6.575 323790 24 ISO 4014/4017 10.9 M30 1250
  390 14.961 24.803 19.134 16.929 6.575 323790 24 ISO 4014/4017 10.9 M30 1250
  390 15.354 24.803 19.134 16.929 6.575 323790 24 ISO 4014/4017 10.9 M30 1250
  420 15.354 26.378 19.921 17.717 6.890 337066 24 ISO 4014/4017 10.9 M30 1250
  420 16.142 26.378 19.921 17.717 6.890 337066 24 ISO 4014/4017 10.9 M30 1250
  420 16.535 26.378 19.921 17.717 6.890 337066 24 ISO 4014/4017 10.9 M30 1250
  440 15.748 27.559 21.024 18.504 6.890 414510 28 ISO 4014/4017 10.9 M30 1250
  440 16.535 27.559 21.024 18.504 6.890 414510 28 ISO 4014/4017 10.9 M30 1250
  440 17.323 27.559 21.024 18.504 6.890 414510 28 ISO 4014/4017 10.9 M30 1250

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.

  • Heavy design – suitable for high torque and bending moments.
  • Compensation of small tolerance errorsplease contact our engineers.
  • Maximum reliability – suitable for static, dynamic and impact loads.
  • Slitted inner ring – low forces and pressures on hub and shaft.
  • Simplified manufacture – only plain shaft and bore diameters with easily achieved surface finish and tolerances are required.
  • 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 diameter dw: Peak-to-valley height Ra ≤ 3,2 μm.

Tolerances

For shaft h9

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