Internal clearance of deep groove ball bearings

Deep groove ball bearings are manufactured as standard with radial internal clearance CN (normal). CN is not stated in the designation.

Deep groove ball bearings are also available with the smaller internal clearance C2 and with the larger internal clearance C3, C4, and C5.

Internal clearance - Deep groove ball bearing
Internal clearance - Deep groove ball bearing
Bore diameter Radial internal clearance
d C2 CN C3 C4 C5
> ≤ min. max. min. max. min. max. min. max. min. max.
mm µm
2,5 6 0 7 2 13 8 23 – – – –
6 10 0 7 2 13 8 23 14 29 20 37
10 18 0 9 3 18 11 25 18 33 25 45
18 24 0 10 5 20 13 28 20 36 28 48
24 30 1 11 5 20 13 28 23 41 30 53
30 40 1 11 6 20 15 33 28 46 40 64
40 50 1 11 6 23 18 36 30 51 45 73
50 65 1 15 8 28 23 43 38 61 55 90
65 80 1 15 10 30 25 51 46 71 65 105
80 100 1 18 12 36 30 58 53 84 75 120
100 120 2 20 15 41 36 66 61 97 90 140
120 140 2 23 18 48 41 81 71 114 105 160
140 160 2 23 18 53 46 91 81 130 120 180
160 180 2 25 20 61 53 102 91 147 135 200
180 200 2 30 25 71 63 117 107 163 150 230
200 225 2 35 25 85 75 140 125 195 175 265
225 250 2 40 30 95 85 160 145 225 205 300
250 280 2 45 35 105 90 170 155 245 225 340
280 315 2 55 40 115 100 190 175 270 245 370
315 355 3 60 45 125 110 210 195 300 275 410
355 400 3 70 55 145 130 240 225 340 315 460
400 450 3 80 60 170 150 270 250 380 350 520
450 500 3 90 70 190 170 300 280 420 390 570
500 560 10 100 80 210 190 330 310 470 440 630
560 630 10 110 90 230 210 360 340 520 490 700
630 710 20 130 110 260 240 400 380 570 540 780
710 800 20 140 120 290 270 450 430 630 600 860
800 900 20 160 140 320 300 500 480 700 670 960
900 1 000 20 170 150 350 330 550 530 770 740 1 040
1 000 1 120 20 180 160 380 360 600 580 850 820 1 150
1 120 1 250 20 190 170 410 390 650 630 920 890 1 260
1 250 1 400 30 200 190 440 420 700 680 1 000 – –
1 400 1 600 30 210 210 470 450 750 730 1 060 – –