Shrink Discs RfN 4181 | RINGFEDER®

Two part shrink heavy duty series – with additional guide mechanism for the inner ring. For the transmission of maximum torques.

RfN 4181

CAD data download is available after login.

CAD
d
mm
D
mm
dw
mm
L
mm
L1
mm
L3
mm
T
Nm
Fax
kN
DG
mm
TA
Nm
Gw
kg
220 370 160 115,8 103,3 87 160000 2000 20 570 52,11
220 370 170 115,8 103,3 87 182000 2150 20 570 52,11
220 370 180 115,8 103,3 87 206000 2300 20 570 52,11
240 405 170 121,4 108,9 92 190000 2250 20 570 66,58
240 405 180 121,4 108,9 92 215000 2400 20 570 66,58
240 405 200 121,4 108,9 92 269000 2700 20 570 66,58
260 430 190 128,4 115,9 102 247000 2600 20 580 77,29
260 430 200 128,4 115,9 102 277000 2750 20 580 77,29
260 430 220 128,4 115,9 102 340000 3100 20 580 77,29
280 460 210 146,4 133,9 121 282000 2686 20 570 103,28
280 460 220 146,4 133,9 121 313000 2845 20 570 103,28
280 460 240 146,4 133,9 121 380000 3167 20 570 103,28
300 485 220 154,1 139,1 122 385000 3500 24 980 117,05
300 485 230 154,1 139,1 122 425000 3700 24 980 117,05
300 485 250 154,1 139,1 122 505000 4050 24 980 117,05
320 520 240 156,6 141,6 124 444000 3700 24 980 132,1
320 520 250 156,6 141,6 124 488000 3904 24 980 132,1
320 520 270 156,6 141,6 124 580000 4296 24 980 132,1
340 570 250 167,5 152,5 135 564000 4500 24 980 184,25
340 570 260 167,5 152,5 135 612000 4700 24 980 184,25
340 570 270 167,5 152,5 135 668000 4950 24 980 184,25
360 590 270 182,7 167,7 150 658000 4850 24 980 208,11
360 590 280 182,7 167,7 150 712000 5100 24 980 208,11
360 590 300 182,7 167,7 150 825000 5500 24 980 208,11
380 640 290 185,1 168,1 148 735000 5069 27 1450 247,5
380 640 300 185,1 168,1 148 790000 5266 27 1450 247,5
380 640 310 185,1 168,1 148 845000 5452 27 1450 247,5
390 650 290 186,3 167,6 144 903000 6250 30 1900 259,55
390 650 300 186,3 167,6 144 970000 6450 30 1900 259,55
390 650 320 186,3 167,6 144 1101000 6950 30 1900 259,55
420 670 320 203,9 186,9 166 969000 6056 27 1450 284,75
420 670 330 203,9 186,9 166 1038000 6291 27 1450 284,75
420 670 350 203,9 186,9 166 1183000 6762 27 1450 284,75
440 740 340 212,9 195,9 178 1212000 7129 27 1450 398
440 740 350 212,9 195,9 178 1292000 7383 27 1450 398
440 740 370 212,9 195,9 178 1460000 7892 27 1450 398
480 790 380 243,7 225,0 201 1815000 9552 30 1900 495,4
480 790 390 243,7 225,0 201 1920000 9845 30 1900 495,4
480 790 410 243,7 225,0 201 2118000 10331 30 1900 495,4
500 835 400 238,7 220,0 198 2054000 10270 30 1900 626,3
500 835 410 238,7 220,0 198 2145000 10463 30 1900 626,3
500 835 430 238,7 220,0 198 2377000 11055 30 1900 626,3
530 850 430 260,0 240,0 206 2397000 11150 30 1900 653,4
530 850 440 260,0 240,0 206 2520520 11457 30 1900 653,4
530 850 460 260,0 240,0 206 2777417 12076 30 1900 653,4
560 940 450 260,0 240,0 206 2545000 11311 30 1900 748,7
560 940 460 260,0 240,0 206 2670006 11609 30 1900 748,7
560 940 480 260,0 240,0 206 2929521 12206 30 1900 748,7
590 960 470 380,0 361,0 286 4012000 17072 30 1900 1173,9
590 960 480 380,0 361,0 286 4199188 17497 30 1900 1173,9
590 960 500 380,0 361,0 286 4587043 18348 30 1900 1173,9
620 970 500 304,0 285,0 244 3402000 13608 30 1900 886,7
620 970 520 304,0 285,0 244 3708000 14261 30 1900 886,7
620 970 540 304,0 285,0 244 4028000 14918 30 1900 886,7
660 1040 530 418,0 396,0 310 5758000 21750 36 3500 1448,2
660 1040 550 418,0 396,0 310 6236900 22680 36 3500 1448,2
660 1040 570 418,0 396,0 310 6735919 23635 36 3500 1448,2
700 1140 560 315,0 294,0 260 4518700 16138 33 2700 1467,5
700 1140 580 315,0 294,0 260 4880000 16828 33 2700 1467,5
700 1140 600 315,0 294,0 260 5258000 17527 33 2700 1467,5
750 1150 600 340,0 428,0 360 7669000 25563 36 3500 1847,5
750 1150 620 450,0 428,0 360 8228643 26544 36 3500 1847,5
750 1150 650 450,0 428,0 360 9106895 28021 36 3500 1847,5
800 1230 640 373,0 352,0 296 6897960 21226 33 2700 1894,4
800 1230 660 373,0 352,0 296 7378000 22358 33 2700 1894,4
800 1230 700 373,0 352,0 296 8390500 23973 33 2700 1894,4
CAD d
inch
D
inch
dw
inch
L
inch
L1
inch
L3
inch
T
ft-lbs
Fax
lbs
DG
mm
TA
ft-lbs
Gw
lbs
  8.661 14.567 6.299 4.559 4.067 3.425 118010 449952 M20 420 115
  8.661 14.567 6.693 4.559 4.067 3.425 134236 483698 M20 420 115
  8.661 14.567 7.087 4.559 4.067 3.425 151938 517445 M20 420 115
  9.449 15.945 6.693 4.780 4.287 3.622 140137 506196 M20 420 147
  9.449 15.945 7.087 4.780 4.287 3.622 158576 539942 M20 420 147
  9.449 15.945 7.874 4.780 4.287 3.622 198404 607435 M20 420 147
  10.236 16.929 7.480 5.055 4.563 4.016 182178 584938 M20 428 170
  10.236 16.929 7.874 5.055 4.563 4.016 204305 618684 M20 428 170
  10.236 16.929 8.661 5.055 4.563 4.016 250771 697426 M20 428 170
  11.024 18.110 8.268 5.764 5.272 4.764 207992 604286 M20 420 228
  11.024 18.110 8.661 5.764 5.272 4.764 230857 640057 M20 420 228
  11.024 18.110 9.449 5.764 5.272 4.764 280274 712499 M20 420 228
  11.811 19.094 8.661 6.067 5.476 4.803 283961 787416 M24 725 258
  11.811 19.094 9.055 6.067 5.476 4.803 313464 832411 M24 725 258
  11.811 19.094 9.843 6.067 5.476 4.803 372469 911153 M24 725 258
  12.598 20.472 9.449 6.165 5.575 4.882 327478 832411 M24 725 291
  12.598 20.472 9.843 6.165 5.575 4.882 359930 878306 M24 725 291
  12.598 20.472 10.630 6.165 5.575 4.882 427786 966497 M24 725 291
  13.386 22.441 9.843 6.594 6.004 5.315 415985 1012392 M24 725 406
  13.386 22.441 10.236 6.594 6.004 5.315 451388 1057387 M24 725 406
  13.386 22.441 10.630 6.594 6.004 5.315 492697 1112448 M24 725 406
  14.173 23.228 10.630 7.193 6.602 5.906 485316 1091134 M24 725 459
  14.173 23.228 11.024 7.193 6.602 5.906 525144 1147378 M24 725 459
  14.173 23.228 11.811 7.193 6.602 5.906 608489 1237368 M24 725 459
  14.961 25.197 11.417 7.287 6.618 5.827 542108 1140403 M27 1070 546
  14.961 25.197 11.811 7.287 6.618 5.827 582674 1184724 M27 1070 546
  14.961 25.197 12.205 7.287 6.618 5.827 623240 1226569 M27 1070 546
  15.354 25.591 11.417 7.335 6.598 5.669 666018 1406100 M30 1400 572
  15.354 25.591 11.811 7.335 6.598 5.669 715435 1451095 M30 1400 572
  15.354 25.591 12.598 7.335 6.598 5.669 812065 1563583 M30 1400 572
  16.535 26.378 12.598 8.026 7.356 6.535 714698 1362455 27 1069 628
  16.535 26.378 12.992 8.026 7.356 6.535 765589 1415324 27 1069 628
  16.535 26.378 13.780 8.026 7.356 6.535 872536 1521288 27 1069 628
  17.323 29.134 13.386 8.382 7.713 7.008 893925 1603854 27 1069 877
  17.323 29.134 13.780 8.382 7.713 7.008 952930 1660998 27 1069 877
  17.323 29.134 14.567 8.382 7.713 7.008 1076841 1775511 27 1069 877
  18.898 31.102 14.961 9.594 8.858 7.913 1338690 2146688 M30 1400 1092
  18.898 31.102 15.354 9.594 8.858 7.913 1416134 2212536 M30 1400 1092
  18.898 31.102 16.142 9.594 8.858 7.913 1562173 2321758 M30 1400 1092
  19.685 32.874 15.748 9.398 8.661 7.795 1514969 2308049 M30 1400 1381
  19.685 32.874 16.142 9.398 8.661 7.795 1582088 2351423 M30 1400 1381
  19.685 32.874 16.929 9.398 8.661 7.795 1753204 2484468 M30 1400 1381
  20.866 33.465 16.929 10.236 9.449 8.110 1767936 2508482 M30 1400 1440
  20.866 33.465 17.323 10.236 9.449 8.110 1859040 2577550 M30 1400 1440
  20.866 33.465 18.110 10.236 9.449 8.110 2048517 2716810 M30 1400 1440
  22.047 37.008 17.717 10.236 9.449 8.110 1877095 2544704 M30 1400 1651
  22.047 37.008 18.110 10.236 9.449 8.110 1969295 2611746 M30 1400 1651
  22.047 37.008 18.898 10.236 9.449 8.110 2160703 2746057 M30 1400 1651
  23.228 37.795 18.504 14.961 14.213 11.260 2959099 3840790 M30 1400 2588
  23.228 37.795 18.898 14.961 14.213 11.260 3097161 3936405 M30 1400 2588
  23.228 37.795 19.685 14.961 14.213 11.260 3383229 4127860 M30 1400 2588
  24.409 38.189 19.685 11.969 11.220 9.606 2509186 3061473 M30 1400 1955
  24.409 38.189 20.472 11.969 11.220 9.606 2734880 3208383 M30 1400 1955
  24.409 38.189 21.260 11.969 11.220 9.606 2970900 3356192 M30 1400 1955
  25.984 40.945 20.866 16.457 15.591 12.205 4246882 4893228 M36 2580 3193
  25.984 40.945 21.654 16.457 15.591 12.205 4600100 5102456 M36 2580 3193
  25.984 40.945 22.441 16.457 15.591 12.205 4968158 5317308 M36 2580 3193
  27.559 44.882 22.047 12.402 11.575 10.236 3332821 3630663 M33 1990 3235
  27.559 44.882 22.835 12.402 11.575 10.236 3599303 3785896 M33 1990 3235
  27.559 44.882 23.622 12.402 11.575 10.236 3878101 3943154 M33 1990 3235
  29.528 45.276 23.622 13.386 16.850 14.173 5656363 5751061 M36 2580 4073
  29.528 45.276 24.409 17.717 16.850 14.173 6069134 5971763 M36 2580 4073
  29.528 45.276 25.591 17.717 16.850 14.173 6716900 6304052 M36 2580 4073
  31.496 48.425 25.197 14.685 13.858 11.654 5087673 4775341 M33 1990 4176
  31.496 48.425 25.984 14.685 13.858 11.654 5441732 5030013 M33 1990 4176
  31.496 48.425 27.559 14.685 13.858 11.654 6188514 5393350 M33 1990 4176

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.

  • Two part shrink heavy duty series – with additional guide mechanism for the inner ring. For the transmission of maximum torques.
  • 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.
  • Highest reliability – applicable for static, dynamic and impact loads.
  • Simplified manufacture – only plain shaft and bore diameters with easily achieved surface finish and tolerances are required.
  • Fully replaceable – The RINGFEDER® shrink discs work without any positive locking.
  • Visual check of the tightening status – minimisation of faults
    during assembly.
  • Easy mounting – RINGFEDER® Shrink Discs use standard
    screws and tightened using standard tools. No additional machining or fitting work is required.
  • Short assembly times - cost savings particularly in series production.
  • Low susceptibility to contamination – when the locking screws
    are tightened the contact (functional) surfaces are pressed firmly together and prevent the ingress of dirt and moisture.
  • Easy adjustability – no stops, steps, key-ways, splines etc. are
    required therefore, hubs can be located and locked at any point or
    angle on the shaft.

Surface finishes

For shaft diameter dw: Peak-to-valley height Ra ≤ 3,2 μm.

Tolerances

For shaft see table above.

Downloads

Product Paper RINGFEDER® Shrink Discs

Product Paper RINGFEDER® Shrink Discs

Tech Paper Shrink Discs RINGFEDER® RfN 4181

Tech Paper Shrink Discs RINGFEDER® RfN 4181

Instruction Manual Shrink Discs RINGFEDER® RfN 4161, RfN 4181

Instruction Manual Shrink Discs RINGFEDER® RfN 4161, RfN 4181

More downloads are available in our download area:

Download