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Shrink Disc RfN 4073 Mini Series

Mini series – this range is a very compact design with low inertia values. It is ideally suited for mechanical seal and small gearbox applications.

RINGFEDER® RfN 4073

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metric inch
CAD d D dw d1 L L1 L3 T P nSc DG TA
  mm mm mm mm mm mm mm Nm N/mm2 Stück mm Nm
  14 34 9 24 14 12 9 9 222 3 4 2,4
  14 34 10 24 14 12 9 14 222 3 4 2,4
  14 34 11 24 14 12 9 20 222 3 4 2,4
  16 42 11 30 14,8 12 9 32 264 4 4 2,4
  16 42 12 30 14,8 12 9 41 264 4 4 2,4
  16 42 13 30 14,8 12 9 52 264 4 4 2,4
  20 47 14 34 17,5 14 10 41 193 4 5 3
  20 47 15 34 17,5 14 10 51 193 4 5 3
  20 47 16 34 17,5 14 10 62 193 4 5 3
  22 50 16 37 18,5 15 10 68 219 5 5 3
  22 50 17 37 18,5 15 10 80 219 5 5 3
  22 50 18 37 18,5 15 10 94 219 5 5 3
  24 50 18 39 18,5 15 10 185 274 5 5 5
  24 50 19 39 18,5 15 10 205 274 5 5 5
  24 50 20 39 18,5 15 10 235 274 5 5 5
  28 56 20 43 18,5 15 10 77 172 5 5 3
  28 56 22 43 18,5 15 10 103 172 5 5 3
  28 56 24 43 18,5 15 10 132 172 5 5 3
  31 60 24 46 18,5 15 10 110 156 5 5 3
  31 60 25 46 18,5 15 10 123 156 5 5 3
  31 60 27 46 18,5 15 10 154 156 5 5 3
  36 66 28 52 18,5 15 10 161 161 6 5 3
  36 66 30 52 18,5 15 10 194 161 6 5 3
  36 66 32 52 18,5 15 10 215 161 6 5 3
  40 68 33 55 18,5 15 10 265 194 6 5 4
  40 68 34 55 18,5 15 10 290 194 6 5 4
  40 68 35 55 18,5 15 10 320 194 6 5 4
  46 80 38 63 22,5 19 14 400 160 8 5 4
  46 80 40 63 22,5 19 14 470 160 8 5 4
  46 80 42 63 22,5 19 14 550 160 8 5 4
  51 86 42 68,5 22,5 19 14 440 144 8 5 4
  51 86 44 68,5 22,5 19 14 510 144 8 5 4
  51 86 45 68,5 22,5 19 14 550 144 8 5 4
  56 91 46 73 22,5 19 14 560 148 9 5 4
  56 91 48 73 22,5 19 14 630 148 9 5 4
  56 91 50 73 22,5 19 14 710 148 9 5 4
  61 96 52 77 22,5 19 14 710 151 10 5 4
  61 96 54 77 22,5 19 14 810 151 10 5 4
  61 96 56 77 22,5 19 14 910 151 10 5 4
  66 100 58 82 22,5 19 14 850 140 10 5 4
  66 100 60 82 22,5 19 14 950 140 10 5 4
  66 100 62 82 22,5 19 14 1060 140 10 5 4
  70 110 62 90 27,5 24 18 1410 153 10 5 6
  70 110 64 90 27,5 24 18 1560 153 10 5 6
  70 110 65 90 27,5 24 18 1630 153 10 5 6
  75 114 66 93 27,5 24 18 1480 142 10 5 6
  75 114 68 93 27,5 24 18 1620 142 10 5 6
  75 114 70 93 27,5 24 18 1770 142 10 5 6
  80 120 71 101 27,5 24 18 2000 161 12 5 6
  80 120 73 101 27,5 24 18 2160 161 12 5 6
  80 120 75 101 27,5 24 18 2330 161 12 5 6
  85 128 76 105 32 28 22 2370 137 8 6 12
  85 128 78 105 32 28 22 2560 137 8 6 12
  85 128 80 105 32 28 22 2760 137 8 6 12
  94 140 82 119 32 28 22 2300 124 8 6 12
  94 140 85 119 32 28 22 2600 124 8 6 12
  94 140 88 119 32 28 22 2920 124 8 6 12
  105 150 92 128 32 28 22 3000 125 9 6 12
  105 150 95 128 32 28 22 3330 125 9 6 12
  105 150 98 128 32 28 22 3680 125 9 6 12
  112 158 100 135 32 28 22 3390 117 9 6 12
  112 158 104 135 32 28 22 3850 117 9 6 12
  112 158 106 135 32 28 22 4100 117 9 6 12
  120 164 106 141 36 32 25 3900 107 10 6 12
  120 164 110 141 36 32 25 4400 107 10 6 12
  120 164 112 141 36 32 25 4670 107 10 6 12
  130 172 115 151 36 32 25 4250 99 10 6 12
  130 172 120 151 36 32 25 4890 99 10 6 12
  130 172 122 151 36 32 25 5100 99 10 6 12
  140 182 125 161 36 32 25 5690 110 12 6 12
  140 182 128 161 36 32 25 6140 110 12 6 12
  140 182 130 161 36 32 25 6450 110 12 6 12
  150 194 135 171 36 32 25 6280 103 12 6 12
  150 194 138 171 36 32 25 6730 103 12 6 12
  150 194 140 171 36 32 25 7050 103 12 6 12
  160 204 142 181 36 32 25 6360 96 12 6 12
  160 204 145 181 36 32 25 6800 96 12 6 12
  160 204 148 181 36 32 25 7260 96 12 6 12
CAD d D dw d1 L L1 L3 T P nSc DG TA
  inch inch inch inch inch inch inch ft-lbs psi pcs. mm ft-lbs
  0.551 1.339 0.354 0.945 0.551 0.472 0.354 7 32222 3 M4 2
  0.551 1.339 0.394 0.945 0.551 0.472 0.354 10 32222 3 M4 2
  0.551 1.339 0.433 0.945 0.551 0.472 0.354 15 32222 3 M4 2
  0.630 1.654 0.433 1.181 0.583 0.472 0.354 24 38318 4 M4 2
  0.630 1.654 0.472 1.181 0.583 0.472 0.354 30 38318 4 M4 2
  0.630 1.654 0.512 1.181 0.583 0.472 0.354 38 38318 4 M4 2
  0.787 1.850 0.551 1.339 0.689 0.551 0.394 30 28013 4 M5 2
  0.787 1.850 0.591 1.339 0.689 0.551 0.394 38 28013 4 M5 2
  0.787 1.850 0.630 1.339 0.689 0.551 0.394 46 28013 4 M5 2
  0.866 1.969 0.630 1.457 0.728 0.591 0.394 50 31787 5 M5 2
  0.866 1.969 0.669 1.457 0.728 0.591 0.394 59 31787 5 M5 2
  0.866 1.969 0.709 1.457 0.728 0.591 0.394 69 31787 5 M5 2
  0.945 1.969 0.709 1.535 0.728 0.591 0.394 136 39770 5 M5 4
  0.945 1.969 0.748 1.535 0.728 0.591 0.394 151 39770 5 M5 4
  0.945 1.969 0.787 1.535 0.728 0.591 0.394 173 39770 5 M5 4
  1.102 2.205 0.787 1.693 0.728 0.591 0.394 57 24965 5 M5 2
  1.102 2.205 0.866 1.693 0.728 0.591 0.394 76 24965 5 M5 2
  1.102 2.205 0.945 1.693 0.728 0.591 0.394 97 24965 5 M5 2
  1.220 2.362 0.945 1.811 0.728 0.591 0.394 81 22643 5 M5 2
  1.220 2.362 0.984 1.811 0.728 0.591 0.394 91 22643 5 M5 2
  1.220 2.362 1.063 1.811 0.728 0.591 0.394 114 22643 5 M5 2
  1.417 2.598 1.102 2.047 0.728 0.591 0.394 119 23368 6 M5 2
  1.417 2.598 1.181 2.047 0.728 0.591 0.394 143 23368 6 M5 2
  1.417 2.598 1.260 2.047 0.728 0.591 0.394 159 23368 6 M5 2
  1.575 2.677 1.299 2.165 0.728 0.591 0.394 195 28158 6 M5 3
  1.575 2.677 1.339 2.165 0.728 0.591 0.394 214 28158 6 M5 3
  1.575 2.677 1.378 2.165 0.728 0.591 0.394 236 28158 6 M5 3
  1.811 3.150 1.496 2.480 0.886 0.748 0.551 295 23223 8 M5 3
  1.811 3.150 1.575 2.480 0.886 0.748 0.551 347 23223 8 M5 3
  1.811 3.150 1.654 2.480 0.886 0.748 0.551 406 23223 8 M5 3
  2.008 3.386 1.654 2.697 0.886 0.748 0.551 325 20901 8 M5 3
  2.008 3.386 1.732 2.697 0.886 0.748 0.551 376 20901 8 M5 3
  2.008 3.386 1.772 2.697 0.886 0.748 0.551 406 20901 8 M5 3
  2.205 3.583 1.811 2.874 0.886 0.748 0.551 413 21481 9 M5 3
  2.205 3.583 1.890 2.874 0.886 0.748 0.551 465 21481 9 M5 3
  2.205 3.583 1.969 2.874 0.886 0.748 0.551 524 21481 9 M5 3
  2.402 3.780 2.047 3.031 0.886 0.748 0.551 524 21917 10 M5 3
  2.402 3.780 2.126 3.031 0.886 0.748 0.551 597 21917 10 M5 3
  2.402 3.780 2.205 3.031 0.886 0.748 0.551 671 21917 10 M5 3
  2.598 3.937 2.283 3.228 0.886 0.748 0.551 627 20320 10 M5 3
  2.598 3.937 2.362 3.228 0.886 0.748 0.551 701 20320 10 M5 3
  2.598 3.937 2.441 3.228 0.886 0.748 0.551 782 20320 10 M5 3
  2.756 4.331 2.441 3.543 1.083 0.945 0.709 1040 22207 10 M5 4
  2.756 4.331 2.520 3.543 1.083 0.945 0.709 1151 22207 10 M5 4
  2.756 4.331 2.559 3.543 1.083 0.945 0.709 1202 22207 10 M5 4
  2.953 4.488 2.598 3.661 1.083 0.945 0.709 1092 20611 10 M5 4
  2.953 4.488 2.677 3.661 1.083 0.945 0.709 1195 20611 10 M5 4
  2.953 4.488 2.756 3.661 1.083 0.945 0.709 1305 20611 10 M5 4
  3.150 4.724 2.795 3.976 1.083 0.945 0.709 1475 23368 12 M5 4
  3.150 4.724 2.874 3.976 1.083 0.945 0.709 1593 23368 12 M5 4
  3.150 4.724 2.953 3.976 1.083 0.945 0.709 1719 23368 12 M5 4
  3.346 5.039 2.992 4.134 1.260 1.102 0.866 1748 19885 8 M6 9
  3.346 5.039 3.071 4.134 1.260 1.102 0.866 1888 19885 8 M6 9
  3.346 5.039 3.150 4.134 1.260 1.102 0.866 2036 19885 8 M6 9
  3.701 5.512 3.228 4.685 1.260 1.102 0.866 1696 17998 8 M6 9
  3.701 5.512 3.346 4.685 1.260 1.102 0.866 1918 17998 8 M6 9
  3.701 5.512 3.465 4.685 1.260 1.102 0.866 2154 17998 8 M6 9
  4.134 5.906 3.622 5.039 1.260 1.102 0.866 2213 18143 9 M6 9
  4.134 5.906 3.740 5.039 1.260 1.102 0.866 2456 18143 9 M6 9
  4.134 5.906 3.858 5.039 1.260 1.102 0.866 2714 18143 9 M6 9
  4.409 6.220 3.937 5.315 1.260 1.102 0.866 2500 16982 9 M6 9
  4.409 6.220 4.094 5.315 1.260 1.102 0.866 2840 16982 9 M6 9
  4.409 6.220 4.173 5.315 1.260 1.102 0.866 3024 16982 9 M6 9
  4.724 6.457 4.173 5.551 1.417 1.260 0.984 2876 15531 10 M6 9
  4.724 6.457 4.331 5.551 1.417 1.260 0.984 3245 15531 10 M6 9
  4.724 6.457 4.409 5.551 1.417 1.260 0.984 3444 15531 10 M6 9
  5.118 6.772 4.528 5.945 1.417 1.260 0.984 3135 14369 10 M6 9
  5.118 6.772 4.724 5.945 1.417 1.260 0.984 3607 14369 10 M6 9
  5.118 6.772 4.803 5.945 1.417 1.260 0.984 3762 14369 10 M6 9
  5.512 7.165 4.921 6.339 1.417 1.260 0.984 4197 15966 12 M6 9
  5.512 7.165 5.039 6.339 1.417 1.260 0.984 4529 15966 12 M6 9
  5.512 7.165 5.118 6.339 1.417 1.260 0.984 4757 15966 12 M6 9
  5.906 7.638 5.315 6.732 1.417 1.260 0.984 4632 14950 12 M6 9
  5.906 7.638 5.433 6.732 1.417 1.260 0.984 4964 14950 12 M6 9
  5.906 7.638 5.512 6.732 1.417 1.260 0.984 5200 14950 12 M6 9
  6.299 8.031 5.591 7.126 1.417 1.260 0.984 4691 13934 12 M6 9
  6.299 8.031 5.709 7.126 1.417 1.260 0.984 5015 13934 12 M6 9
  6.299 8.031 5.827 7.126 1.417 1.260 0.984 5355 13934 12 M6 9

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.
  • Mini series – this range is a very compact design with low inertia
    values. It is ideally suited for mechanical seal and small gearbox
    applications.
  • 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 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 diameter dw: Peak-to-valley height Ra ≤ 3,2 μm.

Tolerances

For shaft see table at right

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