Internal radial clearance  of  deep groove ball bearings                                                                         Unit:um　

Bore		Radial clearance
d mm		C2		C0		C3		C4		C5
over	to	min.	max.	min.	max.	min.	max.	min.	max.	min.	max.
2.5	6	0	7	2	13	8	23	14	29	20	37
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

Remarks:
1.For testing, there shall be a correction of the additional radial clearance due to the load of testing. The detailed amendment are as follows

Bore		Load of testing	Correction (um)
d mm
over	to	N	C2	C0	C3	C4	C5
2.5	18	24.5	3-4	4	4	4	4
18	50	49	4-5	5	6	6	6
50	280	147	6-8	8	9	9	9