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BOUNDARY DIMENSIONS AND IDENTIFYING NUMBERS FOR BEARINGS Tapered Roller Bearings

Table 7. 2 Boundary Dimensions of

Tapered 329 320 X 330 331 302 322 332 303 or 303D 313 Units: mm
Roller
Brgs. Tapered
323 Roller

Brgs.

Diameter Series 9 Diameter Series 0 Diameter Series 1 Diameter Series 2 Diameter Series 3

Bore Number Chamfer Chamfer Chamfer Chamfer Chamfer
Bore NumberDimensionDimensionDimensionDimensionDimension
Dimension Series 29 Dimension Series Dimension Series Dimension Series Dimension Dimension Dimension Cone Cup Dimension Series Dimension Dimension Cone Cup
Series 02 Series 22 Series 32 03 Series 13 Series 23
d 1 2 Cone Cup 20 30 Cone Cup 31 Cone Cup d

DDD DD

B C T B C T r (min.) B C T B C T r (min.) B C T r (min.) B C T B C T B C T r (min.) B C C (1) T B C T B C T r (min.)

00 10 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 30 9 ⎯ 9.70 14 ⎯ 014.7 ⎯ ⎯ ⎯ 0.6 0.6 35 11 ⎯ ⎯ 011.9 ⎯ ⎯ ⎯ 17 ⎯ 017.9 0.6 0.6 10 00
01 12 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 28 11 ⎯ 11 13 ⎯ 13 0.3 0.3 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 32 10 9 10.75 14 ⎯ 014.75 ⎯ ⎯ ⎯ 0.6 0.6 37 12 ⎯ ⎯ 012.9 ⎯ ⎯ ⎯ 17 ⎯ 017.9 1 1
02 15 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 32 12 ⎯ 12 14 ⎯ 14 0.3 0.3 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 12 01

35 11 10 11.75 14 ⎯ 014.75 ⎯ ⎯ ⎯ 0.6 0.6 42 13 11 ⎯ 014.25 ⎯ ⎯ ⎯ 17 14 018.25 1 1 15 02

03 17 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 35 13 ⎯ 13 15 ⎯ 15 0.3 0.3 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 40 12 11 13.25 16 14 017.25 ⎯ ⎯ ⎯1 1 47 14 12 ⎯ 015.25 ⎯ ⎯ ⎯ 19 16 020.25 1 1 17 03
04 20 37 11 ⎯ 11.6 12 9 12 0.3 0.3 42 15 12 15 17 ⎯ 17 0.6 0.6 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 47 14 12 15.25 18 15 019.25 ⎯ ⎯ ⎯1 1
/22 22 40 ⎯ ⎯ ⎯ 12 9 12 0.3 0.3 44 15 11.5 15 ⎯ ⎯ ⎯ 0.6 0.6 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 50 14 12 15.25 18 15 019.25 ⎯ ⎯ ⎯1 1 52 15 13 ⎯ 016.25 ⎯ ⎯ ⎯ 21 18 022.25 1.5 1.5 20 04
56 16 14 ⎯ 017.25 ⎯ ⎯ ⎯ 21 18 022.25 1.5 1.5 22 /22

05 25 42 11 ⎯ 11.6 12 9 12 0.3 0.3 47 15 11.5 15 17 14 17 0.6 0.6 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 52 15 13 16.25 18 15 019.25 22 18 22 1 1 62 17 15 13 018.25 ⎯ ⎯ ⎯ 24 20 025.25 1.5 1.5 25 05
/28 28 45 ⎯ ⎯ ⎯ 12 9 12 0.3 0.3 52 16 12 16 ⎯ ⎯ ⎯ 1 1 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 58 16 14 17.25 19 16 020.25 24 19 24 1 1 68 18 15 14 019.75 ⎯ ⎯ ⎯ 24 20 025.75 1.5 1.5 28 /28
06 30 47 11 ⎯ 11.6 12 9 12 0.3 0.3 55 17 13 17 20 16 20 1 1 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 62 16 14 17.25 20 17 021.25 25 19.5 25 1 1 72 19 16 14 020.75 ⎯ ⎯ ⎯ 27 23 028.75 1.5 1.5 30 06

/32 32 52 ⎯ ⎯ ⎯ 15 10 14 0.6 0.6 58 17 13 17 ⎯ ⎯ ⎯ 1 1 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 65 17 15 18.25 21 18 022.25 26 20.5 26 1 1 75 20 17 15 021.75 ⎯ ⎯ ⎯ 28 24 029.75 1.5 1.5 32 /32
07 35 55 13 ⎯ 14 14 11.5 14 0.6 0.6 62 18 14 18 21 17 21 1 1 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯
08 40 62 14 ⎯ 15 15 12 15 0.6 0.6 68 19 14.5 19 22 18 22 1 1 75 26 20.5 26 1.5 1.5 72 17 15 18.25 23 19 024.25 28 22 28 1.5 1.5 80 21 18 15 022.75 ⎯ ⎯ ⎯ 31 25 032.75 2 1.5 35 07
80 18 16 19.75 23 19 024.75 32 25 32 1.5 1.5 90 23 20 17 025.25 ⎯ ⎯ ⎯ 33 27 035.25 2 1.5 40 08

09 45 68 14 ⎯ 15 15 12 15 0.6 0.6 75 20 15.5 20 24 19 24 1 1 80 26 20.5 26 1.5 1.5 85 19 16 20.75 23 19 024.75 32 25 32 1.5 1.5 100 25 22 18 027.25 ⎯ ⎯ ⎯ 36 30 038.25 2 1.5 45 09
10 50 72 14 ⎯ 15 15 12 15 0.6 0.6 80 20 15.5 20 24 19 24 1 1 85 26 20 26 1.5 1.5 90 20 17 21.75 23 19 024.75 32 24.5 32 1.5 1.5 110 27 23 19 029.25 ⎯ ⎯ ⎯ 40 33 042.25 2.5 2
11 55 80 16 ⎯ 17 17 14 17 11 90 23 17.5 23 27 21 27 1.5 1.5 95 30 23 30 1.5 1.5 50 10

100 21 18 22.75 25 21 026.75 35 27 35 2 1.5 120 29 25 21 031.5 ⎯ ⎯ ⎯ 43 35 045.5 2.5 2 55 11

12 60 85 16 ⎯ 17 17 14 17 1 1 95 23 17.5 23 27 21 27 1.5 1.5 100 30 23 30 1.5 1.5 110 22 19 23.75 28 24 029.75 38 29 38 2 1.5 130 31 26 22 033.5 ⎯ ⎯ ⎯ 46 37 048.5 3 2.5 60 12
120 23 20 24.75 31 27 032.75 41 32 41 2 1.5 140 33 28 23 036 ⎯ ⎯ ⎯ 48 39 051 3 2.5 65 13
13 65 90 16 ⎯ 17 17 14 17 1 1 100 23 17.5 23 27 21 27 1.5 1.5 110 34 26.5 34 1.5 1.5 125 24 21 26.25 31 27 033.25 41 32 41 2 1.5 150 35 30 25 038 ⎯ ⎯ ⎯ 51 42 054 3 2.5 70 14
14 70 100 19 ⎯ 20 20 16 20 1 1 110 25 19 25 31 25.5 31 1.5 1.5 120 37 29 37 2 1.5

15 75 105 19 ⎯ 20 20 16 20 1 1 115 25 19 25 31 25.5 31 1.5 1.5 125 37 29 37 2 1.5 130 25 22 27.25 31 27 033.25 41 31 41 2 1.5 160 37 31 26 040 ⎯ ⎯ ⎯ 55 45 058 3 2.5 75 15
16 80 110 19 ⎯ 20 20 16 20 1 1 125 29 22 29 36 29.5 36 1.5 1.5 130 37 29 37 2 1.5 140 26 22 28.25 33 28 035.25 46 35 46 2.5 2 170 39 33 27 042.5 ⎯ ⎯ ⎯ 58 48 061.5 3 2.5 80 16
17 85 120 22 ⎯ 23 23 18 23 1.5 1.5 130 29 22 29 36 29.5 36 1.5 1.5 140 41 32 41 2.5 2 150 28 24 30.50 36 30 038.5 49 37 49 2.5 2 180 41 34 28 044.5 ⎯ ⎯ ⎯ 60 49 063.5 4 3 85 17

18 90 125 22 ⎯ 23 23 18 23 1.5 1.5 140 32 24 32 39 32.5 39 2 1.5 150 45 35 45 2.5 2 160 30 26 32.50 40 34 042.5 55 42 55 2.5 2 190 43 36 30 046.5 ⎯ ⎯ ⎯ 64 53 067.5 4 3 90 18
19 95 130 22 ⎯ 23 23 18 23 1.5 1.5 145 32 24 32 39 32.5 39 2 1.5 160 49 38 49 2.5 2
20 100 140 24 ⎯ 25 25 20 25 1.5 1.5 150 32 24 32 39 32.5 39 2 1.5 165 52 40 52 2.5 2 170 32 27 34.50 43 37 045.5 58 44 58 3 2.5 200 45 38 32 049.5 ⎯ ⎯ ⎯ 67 55 071.5 4 3 95 19

180 34 29 37.00 46 39 049 63 48 63 3 2.5 215 47 39 ⎯ 051.5 51 35 56.5 73 60 077.5 4 3 100 20

21 105 145 24 ⎯ 25 25 20 25 1.5 1.5 160 35 26 35 43 34 43 2.5 2 175 56 44 56 2.5 2 190 36 30 39.00 50 43 053 68 52 68 3 2.5 225 49 41 ⎯ 053.5 53 36 58.0 77 63 081.5 4 3 105 21
22 110 150 24 ⎯ 25 25 20 25 1.5 1.5 170 38 29 38 47 37 47 2.5 2 180 56 43 56 2.5 2 200 38 32 41.00 53 46 056 ⎯ ⎯ ⎯ 3 2.5 240 50 42 ⎯ 054.5 57 38 63.0 80 65 084.5 4 3 110 22
24 120 165 27 ⎯ 29 29 23 29 1.5 1.5 180 38 29 38 48 38 48 2.5 2 200 62 48 62 2.5 2 215 40 34 43.50 58 50 061.5 ⎯ ⎯ ⎯ 3 2.5 260 55 46 ⎯ 059.5 62 42 68.0 86 69 090.5 4 3 120 24

26 130 180 30 ⎯ 32 32 25 32 2 1.5 200 45 34 45 55 43 55 2.5 2 ⎯ ⎯ ⎯ ⎯⎯ ⎯ 230 40 34 43.75 64 54 067.75 ⎯ ⎯ ⎯ 4 3 280 58 49 ⎯ 063.75 66 44 72.0 93 78 098.75 5 4 130 26
28 140 190 30 ⎯ 32 32 25 32 2 1.5 210 45 34 45 56 44 ⎯⎯ ⎯
30 150 210 36 ⎯ 38 38 30 38 2.5 2 225 48 36 48 59 46 56 2.5 2 ⎯ ⎯ ⎯ ⎯⎯ ⎯ 250 42 36 45.75 68 58 071.75 ⎯ ⎯ ⎯ 4 3 300 62 53 ⎯ 067.75 70 47 77.0 102 85 107.75 5 4 140 28
2.5 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯4 3 320 65 55 ⎯ 072
59 3 270 45 38 49.00 73 60 077 75 50 82.0 108 90 114 5 4 150 30

32 160 220 36 ⎯ 38 38 30 38 2.5 2 240 51 38 51 ⎯ ⎯ ⎯3 2.5 ⎯ ⎯ ⎯ ⎯⎯ ⎯ 290 48 40 52.00 80 67 084 ⎯ ⎯ ⎯4 3 340 68 58 ⎯ 075 79 ⎯ 87.0 114 95 121 5 4 160 32
34 170 230 36 ⎯ 38 38 30 38 2.5 2 260 57 43 57 ⎯ ⎯ ⎯3 2.5 ⎯ ⎯ ⎯ ⎯⎯ ⎯ 310 52 43 57.00 86 71 091 ⎯ ⎯ ⎯5 4 360 72 62 ⎯ 080 84 ⎯ 92.0 120 100 127 5 4 170 34
36 180 250 42 ⎯ 45 45 34 45 2.5 2 280 64 48 64 ⎯ ⎯ ⎯3 2.5 ⎯ ⎯ ⎯ ⎯⎯ ⎯ 320 52 43 57.00 86 71 091 ⎯ ⎯ ⎯5 4 380 75 64 ⎯ 083 88 ⎯ 97.0 126 106 134 5 4 180 36

38 190 260 42 ⎯ 45 45 34 45 2.5 2 290 64 48 64 ⎯ ⎯ ⎯3 2.5 ⎯ ⎯ ⎯ ⎯⎯ ⎯ 340 55 46 60.00 92 75 097 ⎯ ⎯ ⎯5 4 400 78 65 ⎯ 086 92 ⎯ 101.0 132 109 140 6 5 190 38
40 200 280 48 ⎯ 51 51 39 51 3 2.5 310 70 53 70 ⎯ ⎯ ⎯3 2.5 ⎯ ⎯ ⎯ ⎯⎯ ⎯
44 220 300 48 ⎯ 51 51 39 51 3 2.5 340 76 57 76 ⎯ ⎯ ⎯4 3 ⎯⎯⎯ ⎯⎯ ⎯ 360 58 48 64.00 98 82 104 ⎯ ⎯ ⎯5 4 420 80 67 ⎯ 089 97 ⎯ 107.0 138 115 146 6 5 200 40

400 65 54 72.00 108 90 114 ⎯ ⎯ ⎯ 5 4 460 88 73 ⎯ 097 106 ⎯ 117.0 145 122 154 6 5 220 44

48 240 320 48 ⎯ 51 51 39 51 3 2.5 360 76 57 76 ⎯ ⎯ ⎯ 4 3 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 440 72 60 79.00 120 100 127 ⎯ ⎯ ⎯ 5 4 500 95 80 ⎯ 105 114 ⎯ 125.0 155 132 165 6 5 240 48
52 260 360 ⎯ ⎯ ⎯ 63.5 48 63.5 3 2.5 400 87 65 87 ⎯ ⎯ ⎯ 5 4 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 480 80 67 89.00 130 106 137 ⎯ ⎯ ⎯ 6 5 540 102 85 ⎯ 113 123 ⎯ 135.0 165 136 176 6 6 260 52
56 280 380 ⎯ ⎯ ⎯ 63.5 48 63.5 3 2.5 420 87 65 87 ⎯ ⎯ ⎯ 5 4 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 500 80 67 89.00 130 106 137 ⎯ ⎯ ⎯ 6 5 580 108 90 ⎯ 119 132 ⎯ 145.0 175 145 187 6 6 280 56

60 300 420 ⎯ ⎯ ⎯ 76 57 76 4 3 460 100 74 100 ⎯ ⎯ ⎯ 5 4 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 540 85 71 96.00 140 115 149 ⎯ ⎯ ⎯ 6 5 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 300 60
580 92 75 104.00 150 125 159 ⎯ ⎯ ⎯ 6 5 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 320 64
64 320 440 ⎯ ⎯ ⎯ 76 57 76 4 3 480 100 74 100 ⎯ ⎯ ⎯ 5 4 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 340 68
68 340 460 ⎯ ⎯ ⎯ 76 57 76 4 3 ⎯ ⎯⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 360 72
72 360 480 ⎯ ⎯ ⎯ 76 57 76 4 3 ⎯ ⎯⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯
Note (1) Regarding steep-slope bearing 303D, in DIN, the one corresponding to 303D of JIS is numbered 313. For bearings with
Remarks 1. Other series not conforming to this table are also specified by ISO. bore diameters larger than 100 mm, those of dimension series 13 are numbered 313.
Remarks 2. In the Dimension Series of Diameter Series 9, Classification1is those specified by the old standard, Classification 2

Remarks is those specified by the ISO.
Remarks 2. Dimension Series not classified conform to dimensions (D, B, C, T) specified by ISO.
3. The chamfer dimensions listed are the minimum permissible dimensions specified by ISO. They do not apply to

chamfers on the front face.

A 44 A 45