Page 23 - NSK_CAT_E1102m_A7-141

BOUNDARY DIMENSIONS AND IDENTIFYING NUMBERS FOR BEARINGS

Table 7. 4 Dimensions of Snap Ring Grooves and Locating Snap Rings ⎯ (1)
Bearings of Dimension Series 18 and 19

ab f Housing
rN
r0 Side Cover g (Geometry of locating snap ring fitted in groove)

rN e
jD2
jD x
jD1

Units: mm

Applicable Bearings Snap Ring Groove Locating Snap Ring Side Cover

d D Snap Ring Groove Snap Ring Groove Position Snap Ring Groove Radius of Locating Snap Cross Sectional Thickness Geometry of snap ring Stepped Bore
Diameter Width Bottom Ring Number Height fitted in groove Diameter
Dimension Series a Corners f (Reference)
D1 b NR 1022 e (Reference)
Bearing Dimension Series r0 NR 1024 Slit Snap Ring
NR 1028 Width Outside DX
18 19
NR 1030 g Diameter D2 min.
18 19 max. min. max. min. max. min. max. min. max. NR 1032 max. min. max. min.
NR 1034 approx. max.
2.0 1.85 0.7 0.6
⎯ 10 22 20.8 20.5 ⎯⎯ 1.05 0.9 1.05 0.8 0.2 NR 1037 2.0 1.85 0.7 0.6 2 24.8 25.5
⎯ 12 24 22.8 22.5 ⎯⎯ 1.05 0.9 1.05 0.8 0.2 NR 1039 2.05 1.9 0.85 0.75 2 26.8 27.5
⎯ 15 28 26.7 26.4 ⎯⎯ 1.3 1.15 1.2 0.95 0.25 NR 1040 3 30.8 31.5
2.05 1.9 0.85 0.75
⎯ 17 30 28.7 28.4 ⎯⎯ 1.3 1.15 1.2 0.95 0.25 NR 1042 2.05 1.9 0.85 0.75 3 32.8 33.5
20 ⎯ 32 30.7 30.4 1.3 1.15 ⎯ ⎯ 1.2 0.95 0.25 NR 1044 2.05 1.9 0.85 0.75 3 34.8 35.5
22 ⎯ 34 32.7 32.4 1.3 1.15 ⎯ ⎯ 1.2 0.95 0.25 NR 1045 3 36.8 37.5
2.05 1.9 0.85 0.75
25 20 37 35.7 35.4 1.3 1.15 1.7 1.55 1.2 0.95 0.25 NR 1047 2.05 1.9 0.85 0.75 3 39.8 40.5
⎯ 22 39 37.7 37.4 ⎯⎯ 1.7 1.55 1.2 0.95 0.25 NR 1052 2.05 1.9 0.85 0.75 3 41.8 42.5
28 ⎯ 40 38.7 38.4 1.3 1.15 ⎯ ⎯ 1.2 0.95 0.25 NR 1055 3 42.8 43.5
2.05 1.9 0.85 0.75
30 25 42 40.7 40.4 1.3 1.15 1.7 1.55 1.2 0.95 0.25 NR 1058 2.05 1.9 0.85 0.75 3 44.8 45.5
32 ⎯ 44 42.7 42.4 1.3 1.15 ⎯ ⎯ 1.2 0.95 0.25 NR 1062 2.05 1.9 0.85 0.75 4 46.8 47.5
⎯ 28 45 43.7 43.4 ⎯⎯ 1.7 1.55 1.2 0.95 0.25 NR 1065 4 47.8 48.5
2.05 1.9 0.85 0.75
35 30 47 45.7 45.4 1.3 1.15 1.7 1.55 1.2 0.95 0.25 NR 1068 2.05 1.9 0.85 0.75 4 49.8 50.5
40 32 52 50.7 50.4 1.3 1.15 1.7 1.55 1.2 0.95 0.25 NR 1072 2.05 1.9 0.85 0.75 4 54.8 55.5
⎯ 35 55 53.7 53.4 ⎯⎯ 1.7 1.55 1.2 0.95 0.25 NR 1078 4 57.8 58.5
2.05 1.9 0.85 0.75
45 ⎯ 58 56.7 56.4 1.3 1.15 ⎯ ⎯ 1.2 0.95 0.25 NR 1080 2.05 1.9 0.85 0.75 4 60.8 61.5
⎯ 40 62 60.7 60.3 ⎯⎯ 1.7 1.55 1.2 0.95 0.25 NR 1085 2.05 1.9 0.85 0.75 4 64.8 65.5
50 ⎯ 65 63.7 63.3 1.3 1.15 ⎯ ⎯ 1.2 0.95 0.25 NR 1090 4 67.8 68.5
2.05 1.9 0.85 0.75
⎯ 45 68 66.7 66.3 ⎯⎯ 1.7 1.55 1.2 0.95 0.25 NR 1095 2.05 1.9 0.85 0.75 5 70.8 72
55 50 72 70.7 70.3 1.7 1.55 1.7 1.55 1.2 0.95 0.25 NR 1100 3.25 3.1 1.12 1.02 5 74.8 76
60 ⎯ 78 76.2 75.8 1.7 1.55 ⎯ ⎯ 1.6 1.3 0.4 NR 1105 5 82.7 84
3.25 3.1 1.12 1.02
⎯ 55 80 77.9 77.5 ⎯⎯ 2.1 1.9 1.6 1.3 0.4 NR 1110 3.25 3.1 1.12 1.02 5 84.4 86
65 60 85 82.9 82.5 1.7 1.55 2.1 1.9 1.6 1.3 0.4 NR 1115 3.25 3.1 1.12 1.02 5 89.4 91
70 65 90 87.9 87.5 1.7 1.55 2.1 1.9 1.6 1.3 0.4 NR 1120 5 94.4 96
3.25 3.1 1.12 1.02
75 ⎯ 95 92.9 92.5 1.7 1.55 ⎯ ⎯ 1.6 1.3 0.4 NR 1125 3.25 3.1 1.12 1.02 5 99.4 101
80 70 100 97.9 97.5 1.7 1.55 2.5 2.3 1.6 1.3 0.4 NR 1130 4.04 3.89 1.12 1.02 5 104.4 106
⎯ 75 105 102.6 102.1 ⎯⎯ 2.5 2.3 1.6 1.3 0.4 NR 1140 5 110.7 112
4.04 3.89 1.12 1.02
85 80 110 107.6 107.1 2.1 1.9 2.5 2.3 1.6 1.3 0.4 NR 1145 4.04 3.89 1.12 1.02 5 115.7 117
90 ⎯ 115 112.6 112.1 2.1 1.9 ⎯ ⎯ 1.6 1.3 0.4 NR 1150 4.04 3.89 1.12 1.02 5 120.7 122
95 85 120 117.6 117.1 2.1 1.9 3.3 3.1 1.6 1.3 0.4 NR 1165 7 125.7 127
4.04 3.89 1.12 1.02
100 90 125 122.6 122.1 2.1 1.9 3.3 3.1 1.6 1.3 0.4 NR 1175 4.04 3.89 1.12 1.02 7 130.7 132
105 95 130 127.6 127.1 2.1 1.9 3.3 3.1 1.6 1.3 0.4 NR 1180 4.04 3.89 1.7 1.6 7 135.7 137
110 100 140 137.6 137.1 2.5 2.3 3.3 3.1 2.2 1.9 0.6 NR 1190 7 145.7 147
NR 1200 4.04 3.89 1.7 1.6
⎯ 105 145 142.6 142.1 ⎯⎯ 3.3 3.1 2.2 1.9 0.6 4.04 3.89 1.7 1.6 7 150.7 152
120 110 150 147.6 147.1 2.5 2.3 3.3 3.1 2.2 1.9 0.6 4.85 4.7 1.7 1.6 7 155.7 157
130 120 165 161.8 161.3 3.3 3.1 3.7 3.5 2.2 1.9 0.6 7 171.5 173
4.85 4.7 1.7 1.6
140 ⎯ 175 171.8 171.3 3.3 3.1 ⎯ ⎯ 2.2 1.9 0.6 4.85 4.7 1.7 1.6 10 181.5 183
⎯ 130 180 176.8 176.3 ⎯⎯ 3.7 3.5 2.2 1.9 0.6 4.85 4.7 1.7 1.6 10 186.5 188
186.8 186.3 3.3 3.1 3.7 3.5 2.2 1.9 0.6 4.85 4.7 1.7 1.6 10 196.5 198
150 140 190 196.8 196.3 3.3 3.1 ⎯ ⎯ 2.2 1.9 0.6 10 206.5 208
160 ⎯ 200

Remarks The minimum permissible chamfer dimensions rN on the snap-ring-groove side of the outer rings are as follows:

Dimension series 18 : For outside diameters of 78mm and less, use 0.3mm chamfer.

For all others exceeding 78mm, use 0.5mm chamfer.

Dimension series 19 : For outside diameters of 24mm and less, use 0.2mm chamfer.

For 47mm and less, use 0.3mm chamfer.

A 50 For all others exceeding 47mm, use 0.5mm chamfer (However, for an outside diameter of A 51

68 mm, use a 0.3 mm chamfer, which is not compliant with ISO 15).