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FITS AND INTERNAL CLEARANCES

Table 9.12 Radial Internal Clearances in Units : μm Table 9.14 Radial Internal Clearances in Cylindrical Units : μ m
Self-Aligning Ball Bearings Roller Bearings and Solid-Type Needle Roller Bearings

Nominal Bore Clearance in Bearings with Cylindrical Bores Clearance in Bearings with Tapered Bores C5 Nominal Clearances in Bearings Clearances in Non-Interchangeable Bearings
C2 CN C3 C4 C5 C2 CN C3 C4 Bore Dia. with Cylindrical Bores with Cylindrical Bores
Dia. d (mm)
d (mm) CN C3 C4
C2 C5 CC1 CC2 CC (1) CC3 CC4 CC5
over incl. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max.
over incl. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max.
2.5 6 1 8 5 15 10 20 15 25 21 33 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯
6 10 2 9 6 17 12 25 19 33 27 42 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 10 0 25 20 45 35 60 50 75 ⎯ ⎯ ⎯ ⎯⎯ ⎯ ⎯⎯ ⎯⎯ ⎯⎯ ⎯⎯
10 14 2 10 6 19 13 26 21 35 30 48 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 10 24 0 25 20 45 35 60 50 75 65 90 5 15 10 20 20 30 35 45 45 55 65 75
0 25 20 45 35 60 50 75
24 30 70 95 5 15 10 25 25 35 40 50 50 60 70 80

14 18 3 12 8 21 15 28 23 37 32 50 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ 30 40 5 30 25 50 45 70 60 85 80 105 5 15 12 25 25 40 45 55 55 70 80 95
18 24 4 14 10 23 17 30 25 39 34 52 7 17 13 26 20 33 28 42 37 55 40 50 5 35 30 60 50 80 70 100 95 125 5 18 15 30 30 45 50 65 65 80 95 110
50 65 10 40 40 70 60 90 80 110 110 140 5 20 15 35 35 50 55 75 75 90 110 130
24 30 5 16 11 24 19 35 29 46 40 58 9 20 15 28 23 39 33 50 44 62

30 40 6 18 13 29 23 40 34 53 46 66 12 24 19 35 29 46 40 59 52 72 65 80 10 45 40 75 65 100 90 125 130 165 10 25 20 40 40 60 70 90 90 110 130 150
40 50 6 19 14 31 25 44 37 57 50 71 14 27 22 39 33 52 45 65 58 79 80 100 15 50 50 85 75 110 105 140 155 190 10 30 25 45 45 70 80 105 105 125 155 180
50 65 7 21 16 36 30 50 45 69 62 88 18 32 27 47 41 61 56 80 73 99 100 120 15 55 50 90 85 125 125 165 180 220 10 30 25 50 50 80 95 120 120 145 180 205

65 80 8 24 18 40 35 60 54 83 76 108 23 39 35 57 50 75 69 98 91 123 120 140 15 60 60 105 100 145 145 190 200 245 10 35 30 60 60 90 105 135 135 160 200 230
80 100 9 27 22 48 42 70 64 96 89 124 29 47 42 68 62 90 84 116 109 144 140 160 20 70 70 120 115 165 165 215 225 275 10 35 35 65 65 100 115 150 150 180 225 260
100 120 10 31 25 56 50 83 75 114 105 145 35 56 50 81 75 108 100 139 130 170 160 180 25 75 75 125 120 170 170 220 250 300 10 40 35 75 75 110 125 165 165 200 250 285

120 140 10 38 30 68 60 100 90 135 125 175 40 68 60 98 90 130 120 165 155 205 180 200 35 90 90 145 140 195 195 250 275 330 15 45 40 80 80 120 140 180 180 220 275 315
140 160 15 44 35 80 70 120 110 161 150 210 45 74 65 110 100 150 140 191 180 240 200 225 45 105 105 165 160 220 220 280 305 365 15 50 45 90 90 135 155 200 200 240 305 350
225 250 45 110 110 175 170 235 235 300 330 395 15 50 50 100 100 150 170 215 215 265 330 380

Table 9.13 Radial Internal Clearances in 250 280 55 125 125 195 190 260 260 330 370 440 20 55 55 110 110 165 185 240 240 295 370 420
Bearings for Electric Motors 280 315 55 130 130 205 200 275 275 350 410 485 20 60 60 120 120 180 205 265 265 325 410 470
315 355 65 145 145 225 225 305 305 385 455 535 20 65 65 135 135 200 225 295 295 360 455 520

Table 9.13. 1 Deep Groove Ball Bearings Table 9.13.2 Cylindrical Roller Bearings 355 400 100 190 190 280 280 370 370 460 510 600 25 75 75 150 150 225 255 330 330 405 510 585
for Electric Motors for Electric Motors 400 450 110 210 210 310 310 410 410 510 565 665 25 85 85 170 170 255 285 370 370 455 565 650
Units : μm Units : μm 450 500 110 220 220 330 330 440 440 550 625 735 25 95 95 190 190 285 315 410 410 505 625 720

Note (1) CC denotes normal clearance for non-Interchangeable cylindrical roller bearings and solid-type needle roller bearings.

Nominal Bore Clearance Remarks Nominal Bore Clearance Remarks
CM Recommended fit
Dia. d (mm) Dia. d (mm) Interchangeable CT Non-Interchangeable CM Recommended Fit

over incl. min. max. Shaft Housing Bore over incl. min. max. min. max. Shaft Housing Bore

10 (incl) 18 4 11 js5 (j5) 24 40 15 35 15 30 k5 Units : μ m

18 30 5 12 40 50 20 40 20 35 Nominal CC9 (1) Clearances in Non-Interchangeable Bearings with Tapered Bores CC5
CC0 CC1 CC2 CC (2) CC3 CC4
Bore Dia.
d (mm)

30 50 9 17 H6, H7(1) 50 65 25 45 25 40 over incl. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max.

50 80 12 22 k5 or 65 80 30 50 30 45 10 24 5 10 ⎯ ⎯ 10 20 20 30 35 45 45 55 55 65 75 85
24 30 5 10 8 15 10 25 25 35 40 50 50 60 60 70 80 95
JS6, JS7 JS6, JS7
(J6, J7)(1) 30 40 5 12 8 15 12 25 25 40 45 55 55 70 70 80 95 110

80 100 18 30 (J6, J7)(2) 80 100 35 60 35 55 m5 40 50 5 15 10 20 15 30 30 45 50 65 65 80 80 95 110 125
50 65 5 15 10 20 15 35 35 50 55 75 75 90 90 110 130 150
100 120 18 30 100 120 35 65 35 60 or 65 80 10 20 15 30 20 40 40 60 70 90 90 110 110 130 150 170

m5 K6, K7(2) 80 100 10 25 20 35 25 45 45 70 80 105 105 125 125 150 180 205
100 120 10 25 20 35 25 50 50 80 95 120 120 145 145 170 205 230
120 160 24 38 120 140 40 70 40 65 120 140 15 30 25 40 30 60 60 90 105 135 135 160 160 190 230 260

Notes (1) Applicable to outer rings that require movement in 140 160 50 85 50 80 140 160 15 35 30 50 35 65 65 100 115 150 150 180 180 215 260 295
the axial direction. 160 180 15 35 30 50 35 75 75 110 125 165 165 200 200 240 285 320
160 180 60 95 60 90 180 200 20 40 30 50 40 80 80 120 140 180 180 220 220 260 315 355
(2) Applicable to outer rings that do not require n6
movement in the axial direction. 200 225 20 45 35 60 45 90 90 135 155 200 200 240 240 285 350 395
180 200 65 105 65 100 225 250 25 50 40 65 50 100 100 150 170 215 215 265 265 315 380 430
Remarks The radial clearance increase caused by the 250 280 25 55 40 70 55 110 110 165 185 240 240 295 295 350 420 475
measuring load is equal to the correction amount Notes (1) Applicable to outer rings that require movement in
for CN clearance in the remarks under Table 9.9. the axial direction.

(2) Applicable to outer rings that do not require 280 315 30 60 ⎯ ⎯ 60 120 120 180 205 265 265 325 325 385 470 530
movement in the axial direction. 315 355 30 65 ⎯ ⎯ 65 135 135 200 225 295 295 360 360 430 520 585
355 400 35 75 ⎯ ⎯ 75 150 150 225 255 330 330 405 405 480 585 660

400 450 40 85 ⎯ ⎯ 85 170 170 255 285 370 370 455 455 540 650 735
450 500 45 95 ⎯ ⎯ 95 190 190 285 315 410 410 505 505 600 720 815

Notes (1) Clearance CC9 is applicable to cylindrical roller bearings with tapered bores in ISO Tolerance Classes 5 and 4.
Notes (2) CC denotes normal clearance for non-Interchangeable cylindrical roller bearings and solid-type needle roller

A 90 bearings.

A 91