Shrink Discs RfN 4161 | RINGFEDER®

Standard series – this range is the most popular, being used in most applications. High transmission values are possible and by varying the screw tightening torque the Shrink disc can be adapted to the design specification.

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CAD
d
mm
D
mm
dw
mm
L
mm
L1
mm
L3
mm
T
Nm
Fax
kN
DG
mm
TA
Nm
Gw
kg
18 44 15 19 15 13 80 11 6 12 0,15
18 44 16 19 15 13 110 14 6 12 0,15
20 47 17 19,3 15,3 13,5 150 18 6 12 0,2
20 47 18 19,3 15,3 13,5 180 20 6 12 0,2
24 50 19 22 18 15 160 17 6 12 0,2
24 50 20 22 18 15 210 20 6 12 0,2
24 50 22 22 18 15 280 25 6 12 0,2
26 51,5 20 22 18 16 230 23 6 12 0,2
26 51,5 22 22 18 16 300 27 6 12 0,2
26 51,5 24 22 18 16 310 29 6 12 0,2
30 60 24 24 20 17 270 23 6 12 0,3
30 60 25 24 20 17 320 25 6 12 0,3
30 60 26 24 20 17 360 28 6 12 0,3
36 72 27 27,3 22 18,5 510 37 8 35 0,5
36 72 30 27,3 22 18,5 710 47 8 35 0,5
36 72 33 27,3 22 18,5 950 58 8 35 0,5
38 72 27 27,3 22 18,5 480 36 8 35 0,5
38 72 30 27,3 22 18,5 650 43 8 35 0,5
38 72 33 27,3 22 18,5 860 52 8 35 0,5
40 80 34 29,3 24 20,5 810 48 8 35 0,7
40 80 35 29,3 24 20,5 880 50 8 35 0,7
40 80 37 29,3 24 20,5 960 52 8 35 0,7
44 80 35 29,3 24 20,5 800 52 8 35 0,6
44 80 36 29,3 24 20,5 890 57 8 35 0,6
44 80 37 29,3 24 20,5 1050 60 8 35 0,6
50 90 38 31,3 26 22 1500 79 8 35 0,8
50 90 40 31,3 26 22 1700 87 8 35 0,8
50 90 42 31,3 26 22 2000 94 8 35 0,8
55 100 42 34,3 29 25 1600 78 8 35 1,1
55 100 45 34,3 29 25 2000 88 8 35 1,1
55 100 48 34,3 29 25 2400 99 8 35 1,1
60 110 48 34,3 29 24,5 2200 92 8 35 1,3
60 110 50 34,3 29 24,5 2500 98 8 35 1,3
60 110 52 34,3 29 24,5 2700 105 8 35 1,3
62 110 48 34,3 29 24,5 2200 92 8 35 1,3
62 110 50 34,3 29 24,5 2500 98 8 35 1,3
62 110 52 34,3 29 24,5 2700 105 8 35 1,3
68 115 50 34,3 29 24,5 2400 94 8 35 1,4
68 115 55 34,3 29 24,5 3000 111 8 35 1,4
68 115 60 34,3 29 24,5 3800 128 8 35 1,4
75 138 55 37,5 31 26,3 3700 135 10 70 2,3
75 138 60 37,5 31 26,3 4700 156 10 70 2,3
75 138 65 37,5 31 26,3 5800 177 10 70 2,3
80 141 60 37,5 31 26 4200 141 10 70 2,3
80 141 65 37,5 31 26 5200 160 10 70 2,3
80 141 70 37,5 31 26 6300 180 10 70 2,3
85 155 65 45 38 34 5900 186 10 70 3,7
85 155 70 45 38 34 7200 204 10 70 3,7
85 155 75 45 38 34 8500 227 10 70 3,7
90 155 65 45 38 33 5900 182 10 70 3,5
90 155 70 45 38 33 7200 204 10 70 3,5
90 155 75 45 38 33 8500 227 10 70 3,5
95 170 70 49,5 43 37,5 7400 213 10 70 4,9
95 170 75 49,5 43 37,5 8900 236 10 70 4,9
95 170 80 49,5 43 37,5 10400 260 10 70 4,9
100 185 80 56,5 49 43 15000 370 12 121 6,7
100 185 85 56,5 49 43 17300 400 12 121 6,7
100 185 90 56,5 49 43 19600 430 12 121 6,7
105 185 80 56,5 49 43 13900 348 12 121 6,4
105 185 85 56,5 49 43 16100 380 12 121 6,4
105 185 90 56,5 49 43 18600 434 12 121 6,4
110 185 80 56,5 49 43 15500 380 12 121 6,1
110 185 85 56,5 49 43 17800 410 12 121 6,1
110 185 90 56,5 49 43 20000 440 12 121 6,1
115 200 85 62,5 55 48 17200 405 12 121 8
115 200 90 62,5 55 48 19900 443 12 121 8
115 200 95 62,5 55 48 22900 482 12 121 8
120 200 85 62,5 55 48 17300 405 12 121 7,7
120 200 90 62,5 55 48 19900 443 12 121 7,7
120 200 95 62,5 55 48 22900 482 12 121 7,7
125 215 90 60,5 53 46,5 19200 420 12 121 9
125 215 95 60,5 53 46,5 21700 450 12 121 9
125 215 100 60,5 53 46,5 24400 480 12 121 9
130 230 95 65,5 58 51 25900 540 12 121 11,5
130 230 100 65,5 58 51 29000 580 12 121 11,5
130 230 110 65,5 58 51 36000 650 12 121 11,5
135 230 95 67 58 51 21450 452 14 190 11,1
135 230 100 67 58 51 24300 486 14 190 11,1
135 230 110 67 58 51 30500 555 14 190 11,1
140 230 100 67 58 51 25300 500 14 190 10,7
140 230 105 67 58 51 28000 530 14 190 10,7
140 230 115 67 58 51 35600 610 14 190 10,7
150 263 110 71 62 55 37000 673 14 190 16,3
150 263 120 71 62 55 45300 754 14 190 16,3
150 263 125 71 62 55 49700 795 14 190 16,3
155 263 110 71 62 55 33000 600 14 190 15,8
155 263 115 71 62 55 36600 637 14 190 15,8
155 263 120 71 62 55 40500 674 14 190 15,8
160 290 120 78 68 61 57300 950 16 290 22,3
160 290 130 78 68 61 66700 1020 16 290 22,3
160 290 135 78 68 61 72500 1070 16 290 22,3
165 290 120 78 68 61 56500 940 16 290 21,7
165 290 125 78 68 61 61500 980 16 290 21,7
165 290 135 78 68 61 72500 1070 16 290 21,7
170 300 130 78,5 68,5 61 61000 938 16 290 22,3
170 300 140 78,5 68,5 61 72300 1023 16 290 22,3
170 300 145 78,5 68,5 61 78400 1081 16 290 22,3
175 300 130 78,5 68,5 61 61500 900 16 290 21,7
175 300 135 78,5 68,5 61 67000 990 16 290 21,7
175 300 140 78,5 68,5 61 72500 1030 16 290 21,7
180 320 140 97 87 77,5 86500 1237 16 290 34
180 320 150 97 87 77,5 101400 1352 16 290 34
180 320 155 97 87 77,5 109300 1401 16 290 34
185 320 140 97 87 77,5 96000 1250 16 290 33,1
185 320 145 97 87 77,5 104000 1350 16 290 33,1
185 320 155 97 87 77,5 120000 1550 16 290 33,1
190 320 150 96 86 76 92000 1250 16 290 32
190 320 155 96 86 76 99000 1300 16 290 32
190 320 165 96 86 76 113500 1400 16 290 32
195 340 150 95,5 85,5 77 103000 1374 16 290 35
195 340 160 95,5 85,5 77 119300 1491 16 290 35
195 340 165 95,5 85,5 77 126100 1529 16 290 35
200 340 150 95,5 85,5 77 108000 1450 16 290 34
200 340 155 95,5 85,5 77 116000 1500 16 290 34
200 340 160 95,5 85,5 77 124000 1550 16 290 34
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
  0.709 1.732 0.591 0.748 0.591 0.512 59 2473 6 9 0.44
  0.709 1.732 0.630 0.748 0.591 0.512 81 3147 6 9 0.44
  0.787 1.850 0.669 0.768 0.610 0.531 111 4047 6 9 0.44
  0.787 1.850 0.709 0.768 0.610 0.531 133 4496 6 9 0.44
  0.945 1.969 0.748 0.866 0.709 0.591 118 3822 6 9 0.44
  0.945 1.969 0.787 0.866 0.709 0.591 155 4496 6 9 0.44
  0.945 1.969 0.866 0.866 0.709 0.591 207 5620 6 9 0.44
  1.024 2.028 0.787 0.866 0.709 0.630 170 5171 6 9 0.44
  1.024 2.028 0.866 0.866 0.709 0.630 221 6070 6 9 0.44
  1.024 2.028 0.945 0.866 0.709 0.630 229 6519 6 9 0.44
  1.181 2.362 0.945 0.945 0.787 0.669 199 5171 6 9 0.66
  1.181 2.362 0.984 0.945 0.787 0.669 236 5620 6 9 0.66
  1.181 2.362 1.024 0.945 0.787 0.669 266 6295 6 9 0.66
  1.417 2.835 1.063 1.075 0.866 0.728 376 8318 8 26 1.10
  1.417 2.835 1.181 1.075 0.866 0.728 524 10566 8 26 1.10
  1.417 2.835 1.299 1.075 0.866 0.728 701 13039 8 26 1.10
  1.496 2.835 1.299 1.075 0.866 0.728 634 11690 8 26 1.10
  1.496 2.835 1.063 1.075 0.866 0.728 354 8093 8 26 1.10
  1.496 2.835 1.181 1.075 0.866 0.728 479 9667 8 26 1.10
  1.575 3.150 1.339 1.154 0.945 0.807 597 10791 8 26 1.54
  1.575 3.150 1.378 1.154 0.945 0.807 649 11240 8 26 1.54
  1.575 3.150 1.457 1.154 0.945 0.807 708 11690 8 26 1.54
  1.732 3.150 1.378 1.154 0.945 0.807 590 11690 8 26 1.32
  1.732 3.150 1.417 1.154 0.945 0.807 656 12814 8 26 1.32
  1.732 3.150 1.457 1.154 0.945 0.807 774 13489 8 26 1.32
  1.969 3.543 1.496 1.232 1.024 0.866 1106 17760 8 26 1.76
  1.969 3.543 1.575 1.232 1.024 0.866 1254 19558 8 26 1.76
  1.969 3.543 1.654 1.232 1.024 0.866 1475 21132 8 26 1.76
  2.165 3.937 1.654 1.350 1.142 0.984 1180 17535 8 26 2.42
  2.165 3.937 1.772 1.350 1.142 0.984 1475 19783 8 26 2.42
  2.165 3.937 1.890 1.350 1.142 0.984 1770 22256 8 26 2.42
  2.362 4.331 2.047 1.350 1.142 0.965 1991 23605 8 26 2.87
  2.362 4.331 1.890 1.350 1.142 0.965 1623 20682 8 26 2.87
  2.362 4.331 1.969 1.350 1.142 0.965 1844 22031 8 26 2.87
  2.441 4.331 1.890 1.350 1.142 0.965 1623 20682 8 26 2.87
  2.441 4.331 1.969 1.350 1.142 0.965 1844 22031 8 26 2.87
  2.441 4.331 2.047 1.350 1.142 0.965 1991 23605 8 26 2.87
  2.677 4.528 1.969 1.350 1.142 0.965 1770 21132 8 26 3.09
  2.677 4.528 2.165 1.350 1.142 0.965 2213 24954 8 26 3.09
  2.677 4.528 2.362 1.350 1.142 0.965 2803 28776 8 26 3.09
  2.953 5.433 2.165 1.476 1.220 1.035 2729 30349 10 52 5.07
  2.953 5.433 2.362 1.476 1.220 1.035 3467 35070 10 52 5.07
  2.953 5.433 2.559 1.476 1.220 1.035 4278 39791 10 52 5.07
  3.150 5.551 2.362 1.476 1.220 1.024 3098 31698 10 52 5.07
  3.150 5.551 2.559 1.476 1.220 1.024 3835 35969 10 52 5.07
  3.150 5.551 2.756 1.476 1.220 1.024 4647 40466 10 52 5.07
  3.346 6.102 2.559 1.752 1.496 1.339 4352 41814 10 52 7.72
  3.346 6.102 2.756 1.752 1.496 1.339 5310 45861 10 52 7.72
  3.346 6.102 2.953 1.752 1.496 1.339 6269 51032 10 52 7.72
  3.543 6.102 2.559 1.752 1.496 1.299 4352 40915 10 52 7.72
  3.543 6.102 2.756 1.752 1.496 1.299 5310 45861 10 52 7.72
  3.543 6.102 2.953 1.752 1.496 1.299 6269 51032 10 52 7.72
  3.740 6.693 2.756 1.949 1.693 1.476 5458 47884 10 52 11.0
  3.740 6.693 2.953 1.949 1.693 1.476 6564 53055 10 52 11.0
  3.740 6.693 3.150 1.949 1.693 1.476 7671 58450 10 52 11.0
  3.937 7.283 3.150 2.224 1.929 1.693 11063 83179 12 90 14.8
  3.937 7.283 3.346 2.224 1.929 1.693 12760 89924 12 90 14.8
  3.937 7.283 3.543 2.224 1.929 1.693 14456 96668 12 90 14.8
  4.134 7.283 3.543 2.224 1.929 1.693 13719 97567 12 90 14.1
  4.134 7.283 3.150 2.224 1.929 1.693 10252 78233 12 90 14.1
  4.134 7.283 3.346 2.224 1.929 1.693 11875 85427 12 90 14.1
  4.331 7.283 3.150 2.224 1.929 1.693 11432 85427 12 90 13.5
  4.331 7.283 3.346 2.224 1.929 1.693 13129 92172 12 90 13.5
  4.331 7.283 3.543 2.224 1.929 1.693 14751 98916 12 90 13.5
  4.528 7.874 3.346 2.461 2.165 1.890 12686 91048 12 90 17.6
  4.528 7.874 3.543 2.461 2.165 1.890 14677 99590 12 90 17.6
  4.528 7.874 3.740 2.461 2.165 1.890 16890 108358 12 90 17.6
  4.724 7.874 3.346 2.461 2.165 1.890 12686 91048 12 90 17.0
  4.724 7.874 3.543 2.461 2.165 1.890 14677 99590 12 90 17.0
  4.724 7.874 3.740 2.461 2.165 1.890 16890 108358 12 90 17.0
  4.921 8.465 3.543 2.382 2.087 1.831 14161 94420 12 90 19.6
  4.921 8.465 3.740 2.382 2.087 1.831 16005 101164 12 90 19.6
  4.921 8.465 3.937 2.382 2.087 1.831 17997 107908 12 90 19.6
  5.118 9.055 4.331 2.579 2.283 2.008 26552 146126 12 90 25.4
  5.118 9.055 3.740 2.579 2.283 2.008 19103 121397 12 90 25.4
  5.118 9.055 3.937 2.579 2.283 2.008 21389 130389 12 90 25.4
  5.315 9.055 3.740 2.638 2.283 2.008 15821 101614 14 140 24.5
  5.315 9.055 3.937 2.638 2.283 2.008 17923 109257 14 140 24.5
  5.315 9.055 4.331 2.638 2.283 2.008 22496 124769 14 140 24.5
  5.512 9.055 3.937 2.638 2.283 2.008 18660 112404 14 140 23.6
  5.512 9.055 4.134 2.638 2.283 2.008 20652 119149 14 140 23.6
  5.512 9.055 4.528 2.638 2.283 2.008 26257 137133 14 140 23.6
  5.906 10.354 4.331 2.795 2.441 2.165 27290 151296 14 140 35.9
  5.906 10.354 4.724 2.795 2.441 2.165 33412 169506 14 140 35.9
  5.906 10.354 4.921 2.795 2.441 2.165 36657 178723 14 140 35.9
  6.102 10.354 4.331 2.795 2.441 2.165 24340 134885 14 140 34.8
  6.102 10.354 4.528 2.795 2.441 2.165 26995 143203 14 140 34.8
  6.102 10.354 4.724 2.795 2.441 2.165 29871 151521 14 140 34.8
  6.299 11.417 5.315 3.071 2.677 2.402 53473 240546 16 215 49.2
  6.299 11.417 4.724 3.071 2.677 2.402 42262 213568 16 215 49.2
  6.299 11.417 5.118 3.071 2.677 2.402 49195 229305 16 215 49.2
  6.496 11.417 5.315 3.071 2.677 2.402 53473 240546 16 215 47.8
  6.496 11.417 4.921 3.071 2.677 2.402 45360 220313 16 215 47.8
  6.496 11.417 4.724 3.071 2.677 2.402 41672 211320 16 215 47.8
  6.693 11.811 5.709 3.083 2.689 2.402 57825 243018 16 215 49.2
  6.693 11.811 5.118 3.083 2.689 2.402 44991 210871 16 215 49.2
  6.693 11.811 5.512 3.083 2.689 2.402 53326 229980 16 215 49.2
  6.890 11.811 5.512 3.083 2.689 2.402 53473 231553 16 215 47.8
  6.890 11.811 5.118 3.083 2.689 2.402 45360 202328 16 215 47.8
  6.890 11.811 5.315 3.083 2.689 2.402 49417 222561 16 215 47.8
  7.087 12.598 6.102 3.819 3.386 3.051 80616 314957 16 215 75.0
  7.087 12.598 5.906 3.819 3.386 3.051 74789 303942 16 215 75.0
  7.087 12.598 5.512 3.819 3.386 3.051 63799 278089 16 215 75.0
  7.283 12.598 5.512 3.819 3.386 3.051 70806 281011 16 215 73.0
  7.283 12.598 5.709 3.819 3.386 3.051 76706 303492 16 215 73.0
  7.283 12.598 6.102 3.819 3.386 3.051 88507 348454 16 215 73.0
  7.480 13.386 6.299 3.764 3.370 3.031 83713 314732 16 215 79.2
  7.480 13.386 5.906 3.764 3.370 3.031 67856 281011 16 215 79.2
  7.480 13.386 6.102 3.764 3.370 3.031 73019 292252 16 215 79.2
  7.677 13.386 6.299 3.764 3.370 3.031 87991 335190 16 215 77.2
  7.677 13.386 6.496 3.764 3.370 3.031 93007 343733 16 215 77.2
  7.677 13.386 5.906 3.764 3.370 3.031 75969 308887 16 215 77.2
  7.874 13.386 5.906 3.768 3.374 3.031 79657 325973 16 215 75.0
  7.874 13.386 6.102 3.768 3.374 3.031 85557 337213 16 215 75.0
  7.874 13.386 6.299 3.768 3.374 3.031 91458 348454 16 215 75.0

Images & Drawings

Dimensions Dimensions
Location Location
Table Tolerances Table Tolerances

Product 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.
  • Standard design – for high transmission values.
  • Compensation of small tolerance errors – please 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 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.
  • Short installation time - cost savings particularly in serial production.
  • 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 see table at above.

 

Safety Covers

As an effective, safe contact protection against screw heads of rotating shrink discs, original RINGFEDER® Safety Covers made of high-quality synthetic material are available for series RINGFEDER® RfN 4161 up to size 140 x 230 mm.

RINGFEDER® Shrink Discs – How to Use Them?

Learn more about application and functionality of our premium-quality, high-performance RINGFEDER® Shrink Discs in our short video.

More Videos
RINGFEDER® Shrink Discs – How to Use Them?

Downloads
Product Paper RINGFEDER® Shrink Discs

Product Paper RINGFEDER® Shrink Discs

EN English DE German
Tech Paper Shrink Discs RINGFEDER® RfN 4161

Tech Paper Shrink Discs RINGFEDER® RfN 4161

EN English DE German
Instruction Manual Shrink Discs RINGFEDER® RfN 4161, RfN 4181

Instruction Manual Shrink Discs RINGFEDER® RfN 4161, RfN 4181

DE German EN English

Further downloads including certificates, instruction manuals and product images are available to you in our Download Center:

Downloads

Suitable Industry Solutions

Construction
Machine Tools
Packaging
Special Machines
Cement
Chemical
Steel
Material Handling
Pulp & Paper
Refining
Gearboxes
Pumps
Cranes & Hoists
Compressors
Thermal Power Stations
Hydro Power Stations
Solar Energy
Mining
Oil & Gas
Timber

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