Internal Clearance-Shanghai Fangji Bearing Factory

Internal Clearance

Clearance is gap amid bearing inner ring, outer ring, ball package. Bearing has radial clearance and axial clearance.

Deep-groove ball bearing radial clearance

Nominal bearing inner diameter d（mm）		Clearance
Nominal bearing inner diameter d（mm）		C2		CN		C3		C4		C5
Exceed	Below	Min.	Max.	Min.	Max.	Min.	Max.	Min.	Max.	Min.	Max.
10 (Be limited to)	–	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	20	5	13	25	20	36	25	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	60
65	80	1	15	10	30	25	51	46	71	65	105
80	100	1	18	12	36	30	58	53	84	75	120

Miniature Bearing’s Internal Radial Clearance

Clearance mark

MC1

MC2

MC3

MC4

MC5

MC6

Clearance

max

min

max

min

max

min

max

min

max

min

max

min

Internal Clearance

Clearance is gap amid bearing inner ring, outer ring, ball package. Bearing has radial clearance and axial clearance.

Deep-groove ball bearing radial clearance

Nominal bearing inner diameter d（mm）		Clearance
Nominal bearing inner diameter d（mm）		C2		CN		C3		C4		C5
Exceed	Below	Min.	Max.	Min.	Max.	Min.	Max.	Min.	Max.	Min.	Max.
10 (Be limited to)	–	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	20	5	13	25	20	36	25	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	60
65	80	1	15	10	30	25	51	46	71	65	105
80	100	1	18	12	36	30	58	53	84	75	120

Miniature Bearing’s Internal Radial Clearance