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Home > Engineering Data > Internal_Clearance_of_Bearings

Internal Clearance of Bearings

The internal clearance of a bearing is defined as the displacement between the inner ring or outer ring when one of the two is fixed and the other is moved against it.
The internal clearance created when a bearing is running (called "running clearance") has a significant effect on rolling fatigue life, as well as heat generation, noise, vibration, and other faults.

The standard internal clearances of the HSC Ceramic Bearings are presented in the following tables.

I.D. (mm)
C2
C0
C3
C4
C5
Over
Up 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
1
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

Note: HSC can supply bearings with special internal clearances.

 

 
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