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DIN 7993 Standard Dimensions for Snap rings for shafts (DIN 7993 A, UNI 7433 A)

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Technical History and International Equivalents of DIN 7993

This norm has been cancelled
This norm has been replaced by DIN 9925

Round wire snap rings and snap ring grooves for shafts and bores

Dimensional Drawing and Technical Diagrams

664_E38Qt0_din-7993.jpg

Key Dimensions and Technical Parameters

Dimensions in mm - source DIN 7993

Publication date: 04-1970
type A - for shafts type B - for bores
d1 nom
d2 nom
d3 nom
 d4 nom ≈ e U/min RPM limits ≈ weight in kg x 1000 pcs d1 nom
d6 nom
 d5 nom d4 nom ≈ e ≈ weight in kg x 1000 pcs
4 3.2 3.1 0.8 1 175000 - - - - -
5 4.2 4.1 0.8 1 112000 - - - - -
6 5.2 5.1 0.8 1 77000 - - - - -
7 6.2 6.1 0.8 2 57000 7 7.8 7.9 0.8 4
8 7.2 7.1 0.8 2 44000 8 8.8 8.9 0.8 4
10 9.2 9.1 0.8 2 28000 10 10.8 10.9 0.8 4
12 11 10.8 1 3 24000 12 13 13.2 1 6
14 13 12.8 1 3 17800 14 15 15.2 1 6
16 14.4 14.2 1.6 3 22000 0.74 16 17.6 17.8 1.6 8 0.705
18 16.4 16.2 1.6 3 17300 0.83 18 19.6 19.8 1.6 8 0.804
20 18 17.7 2 3 17500 1.45 20 22 22.3 2 10 1.32
22 20 19.7 2 3 14500 1.6 22 24 24.3 2 10 1.47
24 22 21.7 2 3 12200 1.78 24 26 26.3 2 10 1.63
25 23 22.7 2 3 11000 1.84 25 27 27.3 2 10 1.7
26 24 23.7 2 3 10300 1.91 26 28 28.3 2 10 1.79
28 26 25.7 2 3 8900 2.07 28 30 30.3 2 10 1.94
30 28 27.7 2 3 7800 2.22 30 32 32.3 2 10 2.1
32 29.5 29.1 2.5 4 8500 3.67 32 34.5 34.9 2.5 12 3.47
35 32.5 32.1 2.5 4 7200 3.98 35 37.5 37.9 2.5 12 3.85
38 35.5 35.1 2.5 4 6100 4.4 38 40.5 40.9 2.5 12 4.2
40 37.5 37.1 2.5 4 5500 4.64 40 42.5 42.9 2.5 12 4.43
42 39.5 39 2.5 4 5000 4-87 42 44.5 45 2.5 16 4.54
45 42.5 42 2.5 4 4300 5.23 45 47.5 48 2.5 16 4.89
48 45.5 45 2.5 4 3800 5.6 48 50.5 51 2.5 16 5.42
50 47.5 47 2.5 4 3500 5.83 50 52.5 53 2.5 16 5.51
55 51.8 51.1 3.2 4 3700 10.51 55 58.2 58.9 3.2 20 9.77
60 56.8 56.1 3.2 4 3100 11.5 60 63.2 63.9 3.2 20 10.76
65 61.8 61.1 3.2 4 2650 12.49 65 68.2 68.9 3.2 20 11.75
70 66.8 66 3.2 5 2300 13.4 70 73.2 74 3.2 25 12-44
75 71.8 71 3.2 5 2000 14.39 75 78.2 79 3.2 25 13.43
80 76.8 76 3.2 5 1750 15.38 80 83.2 84 3.2 25 14.42
85 81.8 81 3.2 5 1550 16.38 85 88.2 89 3.2 25 15.41
90 86.8 86 3.2 5 1380 17.37 90 93.2 94 3.2 25 16.4
95 91.8 91 3.2 5 1240 18.36 95 98.2 99 3.2 25 17.39
100 96.8 95.8 3.2 5 1120 19.31 100 103.2 104.2 3.2 32 17.98
105 101.8 100.8 3.2 5 1030 20.3 105 108.2 109.2 3.2 32 18.98
110 106.8 105.8 3.2 5 930 21.29 110 113.2 114.2 3.2 32 19.97
115 111.8 110.8 3.2 5 850 22.29 115 118.2 119.2 3.2 32 20.96
120 116.8 115.8 3.2 5 780 23.28 120 123.2 124.2 3.2 32 21.95
125 121.8 120.8 3.2 5 720 24.27 125 128.2 129.2 3.2 32 22.94

Reproduced by permission of DIN Deutsches Institut für Normung e. V. The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from Beuth Verlag GmbH, Burggrafenstraße 6, 10787 Berlin, Germany.
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