Page 18 - NSK_CAT_E1102m_A7-141

A 40 Table 7. 1 Boundary Dimensions of Radial Bearings (except Tapered Roller Bearings) ⎯ 1 ⎯ BOUNDARY DIMENSIONS AND IDENTIFYING NUMBERS FOR BEARINGS

Single-Row 68 69 160 Units: mm
Ball Brgs. 79 60
70
Double-Row Ball N28 NN38 NN48 N19 N29 NN39 NN49
Brgs. N10 N20 NN30 NN40

Cylindrical Roller NA48 NA49 NA59 NA69
Brgs.
239 230 240
Needle Roller
Brgs. Diameter Series 8 Diameter Series 9 Diameter Series 0
Dimension Series
Spherical Roller 10 20 30 40 50
Brgs.

Diameter Series 7
Bore Number
Dimension Series Dimension Series Dimension Dimension Series Dimension Series Dimension
Series Series
d D 17 27 37 17~37 D
08 18 28 38 48 58 68 08 18~68 D 09 19 29 39 49 59 69 09 19~39 49~69 D 00 60 00 10~60

B r B r (min.) B r (min.) B r (min.)

(min.) ⎯⎯⎯⎯⎯⎯⎯⎯
⎯⎯⎯⎯⎯⎯⎯⎯
⎯ 0.6 2 0.8 ⎯ ⎯ 0.05 2.5 ⎯ 01 ⎯ 01.4 ⎯ ⎯ ⎯ ⎯ 0.05 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 02.5 ⎯ 03 ⎯ ⎯ ⎯ ⎯ 0.15
1 1 2.5 1 ⎯ ⎯ 0.05 3 ⎯ 01 ⎯ 01.5 ⎯ ⎯ ⎯ ⎯ 0.05 4 ⎯ 01.6 ⎯ 02.3 ⎯ ⎯ ⎯ ⎯ 0.1 ⎯ ⎯ ⎯
⎯ 1.8 0.05 4 ⎯ 01.2 ⎯ 02 ⎯ ⎯ ⎯ ⎯ 0.05 5 ⎯ 02 ⎯ 02.6 ⎯ ⎯ ⎯ ⎯ 0.15 ⎯ 6 ⎯ 02.8 ⎯ 03.5 ⎯ ⎯ ⎯ ⎯ 0.15
⎯ 1.5 3 1 02.8 ⎯ 04 ⎯ ⎯ ⎯ ⎯ 0.15
03 ⎯ 05 ⎯ ⎯ ⎯ ⎯ 0.15
22 4 1.2 ⎯ 2 0.05 5 ⎯ 01.5 ⎯ 02.3 ⎯ ⎯ ⎯ ⎯ 0.08 6 ⎯ 02.3 ⎯ 03 ⎯ ⎯ ⎯ ⎯ 0.15 ⎯ 7⎯
⎯ 2.5 5 1.5 ⎯ 2.3 0.08 6 ⎯ 01.8 ⎯ 02.6 ⎯ ⎯ ⎯ ⎯ 0.08 7 ⎯ 02.5 ⎯ 03.5 ⎯ ⎯ ⎯ ⎯ 0.15 ⎯ 8⎯ 04 ⎯ 06 ⎯ ⎯ ⎯ ⎯ 0.2
7 ⎯ 02 ⎯ 03 ⎯ ⎯ ⎯ ⎯ 0.1 8 ⎯ 03 ⎯ 04 ⎯ ⎯ ⎯ ⎯ 0.15 ⎯ 9⎯ 05 ⎯ 07 ⎯ ⎯ ⎯ ⎯ 0.2
33 6 2 2.5 3 0.08 06 ⎯ 09 ⎯ ⎯ ⎯ ⎯ 0.3

4 4 7 2 2.5 3 0.08 9 ⎯ 02.5 03.5 04 ⎯ ⎯ ⎯ ⎯ 0.1 11 ⎯ 04 ⎯ 05 ⎯ ⎯ ⎯ ⎯ 0.15 ⎯ 12 ⎯ 06 8 10 ⎯ ⎯ ⎯ ⎯ 0.3
5 5 8 2 2.5 3 0.08 11 ⎯ 03 04 05 ⎯ ⎯ ⎯ ⎯ 0.15 13 ⎯ 04 ⎯ 06 10 ⎯ ⎯ ⎯ 0.2 0.15 14 ⎯ 07 9 11 14 19 25 ⎯ 0.3
6 6 10 2.5 3 3.5 0.1 13 ⎯ 03.5 05 06 ⎯ ⎯ ⎯ ⎯ 0.15 15 ⎯ 05 ⎯ 07 10 ⎯ ⎯ ⎯ 0.2 0.15 17 ⎯ 07 10 12 15 20 27 ⎯ 0.3

7 7 11 2.5 3 3.5 0.1 14 ⎯ 03.5 05 06 ⎯ ⎯ ⎯ ⎯ 0.15 17 ⎯ 05 ⎯ 07 10 ⎯ ⎯ ⎯ 0.3 0.15 19 ⎯ 08 10 12 16 21 29 ⎯ 0.3
⎯ 04 05 06 8 ⎯ ⎯ ⎯ 0.2 19 ⎯ 06 ⎯ 09 11 ⎯ ⎯ ⎯ 0.3 0.2 22 ⎯ 08 10 12 16 21 29 0.3 0.3
8 8 12 2.5 ⎯ 3.5 0.1 16 ⎯ 04 05 06 8 ⎯ ⎯ ⎯ 0.2 20 ⎯ 06 ⎯ 09 11 ⎯ ⎯ ⎯ 0.3 0.3 24 ⎯ 09 11 13 17 23 30 0.3 0.3
9 9 14 3 ⎯ 4.5 0.1 17
10 12 14 18 24 32 0.3 0.3
00 10 15 3 ⎯ 4.5 0.1 19 ⎯ 05 06 07 9 ⎯ ⎯ ⎯ 0.3 22 ⎯ 06 8 10 13 16 22 ⎯ 0.3 0.3 26 ⎯ 12 14 16 22 30 40 0.3 0.6
01 12 18 4 ⎯ 5 0.2 21 ⎯ 05 06 07 9 ⎯ ⎯ ⎯ 0.3 24 ⎯ 06 8 10 13 16 22 ⎯ 0.3 0.3 28 7 12 14 16 22 30 40 0.3 0.6
02 15 21 4 ⎯ 5 0.2 24 ⎯ 05 06 07 9 ⎯ ⎯ ⎯ 0.3 28 ⎯ 07 8.5 10 13 18 23 ⎯ 0.3 0.3
32 8 12 14 16 22 30 40 0.3 0.6
12 15 18 24 32 43 0.3 0.6
03 17 23 4 ⎯ 5 0.2 26 ⎯ 05 06 07 9 ⎯ ⎯ ⎯ 0.3 30 ⎯ 07 8.5 10 13 18 23 ⎯ 0.3 0.3 35 8 13 16 19 25 34 45 0.3 1
04 20 27 4 ⎯ 5 0.2 32
/22 22 ⎯ ⎯ ⎯ ⎯ ⎯ 34 4 07 08 10 12 16 22 0.3 0.3 37 7 09 11 13 17 23 30 0.3 0.3 0.3 42 8 13 16 20 26 35 47 0.3 1
14 17 20 27 36 48 0.3 1
4 07 ⎯ 10 ⎯ 16 22 0.3 0.3 39 7 09 11 13 17 23 30 0.3 0.3 0.3 44 8 15 18 21 28 38 50 0.3 1

05 25 32 4 ⎯ 5 0.2 37 4 07 08 10 12 16 22 0.3 0.3 42 7 09 11 13 17 23 30 0.3 0.3 0.3 47 8 16 19 23 30 40 54 0.6 1
/28 28 ⎯ ⎯ ⎯ ⎯ ⎯ 40 4 07 ⎯ 10 ⎯ 16 22 0.3 0.3 45 7 09 11 13 17 23 30 0.3 0.3 0.3 52 8 16 19 23 30 40 54 0.6 1
06 30 37 4 ⎯ 5 0.2 42 4 07 08 10 12 16 22 0.3 0.3 47 7 09 11 13 17 23 30 0.3 0.3 0.3 55 9 18 22 26 35 46 63 0.6 1.1

/32 32 ⎯ ⎯ ⎯ ⎯ ⎯ 44 4 07 ⎯ 10 ⎯ 16 22 0.3 0.3 52 7 10 13 15 20 27 36 0.3 0.6 0.6 58 9 18 22 26 35 46 63 0.6 1.1
07 35 ⎯ ⎯ ⎯ ⎯ ⎯ 47 4 07 08 10 12 16 22 0.3 0.3 55 7 10 13 15 20 27 36 0.3 0.6 0.6 62 9 18 22 26 35 46 63 0.6 1.1
08 40 ⎯ ⎯ ⎯ ⎯ ⎯ 52 20 24 30 40 54 71 0.6 1.1
4 07 08 10 12 16 22 0.3 0.3 62 8 12 14 16 22 30 40 0.3 0.6 0.6 68 9
20 24 30 40 54 71 0.6 1.1
09 45 ⎯ ⎯ ⎯ ⎯ ⎯ 58 4 07 08 10 13 18 23 0.3 0.3 68 8 12 14 16 22 30 40 0.3 0.6 0.6 75 10 22 27 34 45 60 80 0.6 1.1
10 50 ⎯ ⎯ ⎯ ⎯ ⎯ 65 5 07 10 12 15 20 27 0.3 0.3 72 8 12 14 16 22 30 40 0.3 0.6 0.6 80 10 22 27 34 45 60 80 0.6 1.1
11 55 ⎯ ⎯ ⎯ ⎯ ⎯ 72 7 09 11 13 17 23 30 0.3 0.3 80 9 13 16 19 25 34 45 0.3 1 1 90 11
24 30 37 50 67 90 1 1.5
12 60 ⎯ ⎯ ⎯ ⎯ ⎯ 78 7 10 12 14 18 24 32 0.3 0.3 85 9 13 16 19 25 34 45 0.3 1 1 95 11 24 30 37 50 67 90 1 1.5
13 65 ⎯ ⎯ ⎯ ⎯ ⎯ 85 24 30 37 50 67 90 1 1.5
14 70 ⎯ ⎯ ⎯ ⎯ ⎯ 90 7 10 13 15 20 27 36 0.3 0.6 90 9 13 16 19 25 34 45 0.3 1 1 100 11

8 10 13 15 20 27 36 0.3 0.6 100 10 16 19 23 30 40 54 0.6 1 1 110 13

15 75 ⎯ ⎯ ⎯ ⎯ ⎯ 95 8 10 13 15 20 27 36 0.3 0.6 105 10 16 19 23 30 40 54 0.6 1 1 115 13
16 80 ⎯ ⎯ ⎯ ⎯ ⎯ 100 8 10 13 15 20 27 36 0.3 0.6 110 10 16 19 23 30 40 54 0.6 1 1 125 14
17 85 ⎯ ⎯ ⎯ ⎯ ⎯ 110 9 13 16 19 25 34 45 0.3 1 120 11 18 22 26 35 46 63 0.6 1.1 1.1 130 14

18 90 ⎯ ⎯ ⎯ ⎯ ⎯ 115 9 13 16 19 25 34 45 0.3 1 125 11 18 22 26 35 46 63 0.6 1.1 1.1 140 16
19 95 ⎯ ⎯ ⎯ ⎯ ⎯ 120 9 13 16 19 25 34 45 0.3 1 130 11 18 22 26 35 46 63 0.6 1.1 1.1 145 16
20 100 ⎯ ⎯ ⎯ ⎯ ⎯ 125 9 13 16 19 25 34 45 0.3 1 140 13 20 24 30 40 54 71 0.6 1.1 1.1 150 16

21 105 ⎯ ⎯ ⎯ ⎯ ⎯ 130 9 13 16 19 25 34 45 0.3 1 145 13 20 24 30 40 54 71 0.6 1.1 1.1 160 18 26 33 41 56 75 100 1 02
22 110 ⎯ ⎯ ⎯ ⎯ ⎯ 140 10 16 19 23 30 40 54 0.6 1 150 13 20 24 30 40 54 71 0.6 1.1 1.1 170 19 28 36 45 60 80 109 1 02
24 120 ⎯ ⎯ ⎯ ⎯ ⎯ 150 10 16 19 23 30 40 54 0.6 1 165 14 22 27 34 45 60 80 0.6 1.1 1.1 180 19 28 36 46 60 80 109 1 02

26 130 ⎯ ⎯ ⎯ ⎯ ⎯ 165 11 18 22 26 35 46 63 0.6 1.1 180 16 24 30 37 50 67 90 1 1.5 1.5 200 22 33 42 52 69 95 125 1.1 02
28 140 ⎯ ⎯ ⎯ ⎯ ⎯ 175 11 18 22 26 35 46 63 0.6 1.1 190 16 24 30 37 50 67 90 1 1.5 1.5 210 22 33 42 53 69 95 125 1.1 02
30 150 ⎯ ⎯ ⎯ ⎯ ⎯ 190 13 20 24 30 40 54 71 0.6 1.1 210 19 28 36 45 60 80 109 1 2 2 225 24 35 45 56 75 100 136 1.1 02.1

32 160 ⎯ ⎯ ⎯ ⎯ ⎯ 200 13 20 24 30 40 54 71 0.6 1.1 220 19 28 36 45 60 80 109 1 2 2 240 25 38 48 60 80 109 145 1.5 02.1
34 170 ⎯ ⎯ ⎯ ⎯ ⎯ 215 14 22 27 34 45 60 80 0.6 1.1 230 19 28 36 45 60 80 109 1 2 2 260 28 42 54 67 90 122 160 1.5 02.1
36 180 ⎯ ⎯ ⎯ ⎯ ⎯ 225 14 22 27 34 45 60 80 0.6 1.1 250 22 33 42 52 69 95 125 1.1 2 2 280 31 46 60 74 100 136 180 2 02.1

38 190 ⎯ ⎯ ⎯ ⎯ ⎯ 240 16 24 30 37 50 67 90 1 1.5 260 22 33 42 52 69 95 125 1.1 2 2 290 31 46 60 75 100 136 180 2 02.1
40 200 ⎯ ⎯ ⎯ ⎯ ⎯ 250 16 24 30 37 50 67 90 1 1.5 280 25 38 48 60 80 109 145 1.5 2.1 2.1 310 34 51 66 82 109 150 200 2 02.1
44 220 ⎯ ⎯ ⎯ ⎯ ⎯ 270 16 24 30 37 50 67 90 1 1.5 300 25 38 48 60 80 109 145 1.5 2.1 2.1 340 37 56 72 90 118 160 218 2.1 03

48 240 ⎯ ⎯ ⎯ ⎯ ⎯ 300 19 28 36 45 60 80 109 1 2 320 25 38 48 60 80 109 145 1.5 2.1 2.1 360 37 56 72 92 118 160 218 2.1 03
52 260 ⎯ ⎯ ⎯ ⎯ ⎯ 320 19 28 36 45 60 80 109 1 2 360 31 46 60 75 100 136 180 2 2.1 2.1 400 44 65 82 104 140 190 250 3 04
56 280 ⎯ ⎯ ⎯ ⎯ ⎯ 350 22 33 42 52 69 95 125 1.1 2 380 31 46 60 75 100 136 180 2 2.1 2.1 420 44 65 82 106 140 190 250 3 04

60 300 ⎯ ⎯ ⎯ ⎯ ⎯ 380 25 38 48 60 80 109 145 1.5 2.1 420 37 56 72 90 118 160 218 2.1 3 3 460 50 74 95 118 160 218 290 4 04
64 320 ⎯ ⎯ ⎯ ⎯ ⎯ 400 25 38 48 60 80 109 145 1.5 2.1 440 37 56 72 90 118 160 218 2.1 3 3 480 50 74 95 121 160 218 290 4 04
68 340 ⎯ ⎯ ⎯ ⎯ ⎯ 420 25 38 48 60 80 109 145 1.5 2.1 460 37 56 72 90 118 160 218 2.1 3 3 520 57 82 106 133 180 243 325 4 05

72 360 ⎯ ⎯ ⎯ ⎯ ⎯ 440 25 38 48 60 80 109 145 1.5 2.1 480 37 56 72 90 118 160 218 2.1 3 3 540 57 82 106 134 180 243 325 4 05
76 380 ⎯ ⎯ ⎯ ⎯ ⎯ 480 31 46 60 75 100 136 180 2 2.1 520 44 65 82 106 140 190 250 3 4 4 560 57 82 106 135 180 243 325 4 05
80 400 ⎯ ⎯ ⎯ ⎯ ⎯ 500 31 46 60 75 100 136 180 2 2.1 540 44 65 82 106 140 190 250 3 4 4 600 63 90 118 148 200 272 355 5 05

84 420 ⎯ ⎯ ⎯ ⎯ ⎯ 520 31 46 60 75 100 136 180 2 2.1 560 44 65 82 106 140 190 250 3 4 4 620 63 90 118 150 200 272 355 5 05
88 440 ⎯ ⎯ ⎯ ⎯ ⎯ 540 31 46 60 75 100 136 180 2 2.1 600 50 74 95 118 160 218 290 4 4 4 650 67 94 122 157 212 280 375 5 06
92 460 ⎯ ⎯ ⎯ ⎯ ⎯ 580 37 56 72 90 118 160 218 2.1 3 620 50 74 95 118 160 218 290 4 4 4 680 71 100 128 163 218 300 400 5 06

96 480 ⎯ ⎯ ⎯ ⎯ ⎯ 600 37 56 72 90 118 160 218 2.1 3 650 54 78 100 128 170 230 308 4 5 5 700 71 100 128 165 218 300 400 5 06
/500 500 ⎯ ⎯ ⎯ ⎯ ⎯ 620 37 56 72 90 118 160 218 2.1 3 670 54 78 100 128 170 230 308 4 5 5 720 71 100 128 167 218 300 400 5 06
/530 530 ⎯ ⎯ ⎯ ⎯ ⎯ 650 37 56 72 90 118 160 218 2.1 3 710 57 82 106 136 180 243 325 4 5 5 780 80 112 145 185 250 335 450 6 06

/560 560 ⎯ ⎯ ⎯ ⎯ ⎯ 680 37 56 72 90 118 160 218 2.1 3 750 60 85 112 140 190 258 345 5 5 5 820 82 115 150 195 258 355 462 6 06
/600 600 ⎯ ⎯ ⎯ ⎯ ⎯ 730 42 60 78 98 128 175 236 3 3 800 63 90 118 150 200 272 355 5 5 5 870 85 118 155 200 272 365 488 6 06
/630 630 ⎯ ⎯ ⎯ ⎯ ⎯ 780 48 69 88 112 150 200 272 3 4 850 71 100 128 165 218 300 400 5 6 6 920 92 128 170 212 290 388 515 6 07.5

/670 670 ⎯ ⎯ ⎯ ⎯ ⎯ 820 48 69 88 112 150 200 272 3 4 900 73 103 136 170 230 308 412 5 6 6 980 100 136 180 230 308 425 560 6 07.5
/710 710 ⎯ ⎯ ⎯ ⎯ ⎯ 870 50 74 95 118 160 218 290 4 4 950 78 106 140 180 243 325 438 5 6 6 1030 103 140 185 236 315 438 580 6 07.5
/750 750 ⎯ ⎯ ⎯ ⎯ ⎯ 920 54 78 100 128 170 230 308 4 5 1000 80 112 145 185 250 335 450 6 6 6 1090 109 150 195 250 335 462 615 7.5 07.5

/800 800 ⎯ ⎯ ⎯ ⎯ ⎯ 980 57 82 106 136 180 243 325 4 5 1060 82 115 150 195 258 355 462 6 6 6 1150 112 155 200 258 345 475 630 7.5 07.5
/850 850 ⎯ ⎯ ⎯ ⎯ ⎯ 1030 57 82 106 136 180 243 325 4 5 1120 85 118 155 200 272 365 488 6 6 6 1220 118 165 212 272 365 500 670 7.5 07.5
/900 900 ⎯ ⎯ ⎯ ⎯ ⎯ 1090 60 85 112 140 190 258 345 5 5 1180 88 122 165 206 280 375 500 6 6 6 1280 122 170 218 280 375 515 690 7.5 07.5

/950 950 ⎯ ⎯ ⎯ ⎯ ⎯ 1150 63 90 118 150 200 272 355 5 5 1250 95 132 175 224 300 400 545 6 7.5 7.5 1360 132 180 236 300 412 560 730 7.5 07.5
/1000 1000 ⎯ ⎯ ⎯ ⎯ ⎯ 1220 71 100 128 165 218 300 400 5 6 1320 103 140 185 236 315 438 580 6 7.5 7.5 1420 136 185 243 308 412 560 750 7.5 07.5
/1060 1060 ⎯ ⎯ ⎯ ⎯ ⎯ 1280 71 100 128 165 218 300 400 5 6 1400 109 150 195 250 335 462 615 7.5 7.5 7.5 1500 140 195 250 325 438 600 800 9.5 09.5

/1120 1120 ⎯ ⎯ ⎯ ⎯ ⎯ 1360 78 106 140 180 243 325 438 5 6 1460 109 150 195 250 335 462 615 7.5 7.5 7.5 1580 145 200 265 345 462 615 825 9.5 09.5
/1180 1180 ⎯ ⎯ ⎯ ⎯ ⎯ 1420 78 106 140 180 243 325 438 5 6 1540 115 160 206 272 355 488 650 7.5 7.5 7.5 1660 155 212 272 355 475 650 875 9.5 09.5
/1250 1250 ⎯ ⎯ ⎯ ⎯ ⎯ 1500 80 112 145 185 250 335 450 6 6 1630 122 170 218 280 375 515 690 7.5 7.5 7.5 1750 ⎯ 218 290 375 500 ⎯ ⎯ ⎯ 09.5

/1320 1320 ⎯ ⎯ ⎯ ⎯ ⎯ 1600 88 122 165 206 280 375 500 6 6 1720 128 175 230 300 400 545 710 7.5 7.5 7.5 1850 ⎯ 230 300 400 530 ⎯ ⎯ ⎯ 12
/1400 1400 ⎯ ⎯ ⎯ ⎯ ⎯ 1700 95 132 175 224 300 400 545 6 7.5 1820 ⎯ 185 243 315 425 ⎯ ⎯ ⎯ 9.5 9.5 1950 ⎯ 243 315 412 545 ⎯ ⎯ ⎯ 12
/1500 1500 ⎯ ⎯ ⎯ ⎯ ⎯ 1820 ⎯ 140 185 243 315 ⎯ ⎯ ⎯ 7.5 1950 ⎯ 195 258 335 450 ⎯ ⎯ ⎯ 9.5 9.5 2120 ⎯ 272 355 462 615 ⎯ ⎯ ⎯ 12

/1600 1600 ⎯ ⎯ ⎯ ⎯ ⎯ 1950 ⎯ 155 200 265 345 ⎯ ⎯ ⎯ 7.5 2060 ⎯ 200 265 345 462 ⎯ ⎯ ⎯ 9.5 9.5 2240 ⎯ 280 365 475 630 ⎯ ⎯ ⎯ 12
/1700 1700 ⎯ ⎯ ⎯ ⎯ ⎯ 2060 ⎯ 160 206 272 355 ⎯ ⎯ ⎯ 7.5 2180 ⎯ 212 280 355 475 ⎯ ⎯ ⎯ 9.5 9.5 2360 ⎯ 290 375 500 650 ⎯ ⎯ ⎯ 15
/1800 1800 ⎯ ⎯ ⎯ ⎯ ⎯ 2180 ⎯ 165 218 290 375 ⎯ ⎯ ⎯ 9.5 2300 ⎯ 218 290 375 500 ⎯ ⎯ ⎯ 12 12 2500 ⎯ 308 400 530 690 ⎯ ⎯ ⎯ 15

/1900 1900 ⎯ ⎯ ⎯ ⎯ ⎯ 2300 ⎯ 175 230 300 400 ⎯ ⎯ ⎯ 9.5 2430 ⎯ 230 308 400 530 ⎯ ⎯ ⎯ 12 12 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯
/2000 2000 ⎯ ⎯ ⎯ ⎯ ⎯ 2430 ⎯ 190 250 325 425 ⎯ ⎯ ⎯ 9.5 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯

A 41 Remarks The chamfer dimensions listed in this table do not necessarily apply to the following chamfers: (a) Chamfers of the grooves in outer rings that have snap ring grooves.
(b) For thin section cylindrical roller bearings, the chamfers on side without rib and bearing bore (in case of an inner ring) or outer surface (in case of an outer ring).
(c) For angular contact ball bearings, the chamfers between the front face and bore (in case of an inner ring) or outer surface (in case of an outer ring).
(d) Chamfers on inner rings of bearings with tapered bores.