Bearing Clearance

Bearing interal clearance is defined as the total distance through which one bearing ring can be moved relative to the other. The operational clearance of a bearing has great influence on the running condition,life,vibration level,noise value,and thermal expansion of bearing.Following tables give the clearance for the various bearing types in the conditions of without preload.

Radial internal clearance of deep groove ball bearings(including cylindrical bore):

Note: When measuring the clearance,we should take into consideration of the extra clearance arisen from the measuring load.

Bore
d(mm)

Clearance

C2

C0

C3

C4

C5

over

to

min.

max.

min.

max.

min.

max.

min.

max.

min.

max.

6
10

10
18

0
0

7
9

2
3

13
18

8
11

23
25

14
18

29
33

20
25

37
45

18
24
30

24
30
40

0
1
1

10
11
11

5
5
6

20
20
20

13
13
15

28
28
33

20
23
28

36
41
46

28
30
40

48
53
64

10
50
65

50
65
80

1
1
1

11
15
15

6
8
10

23
28
30

18
23
25

36
43
51

30
38
46

51
61
71

45
55
65

73
90
105

80
100
120

100
120
140

1
2
2

18
20
23

12
15
18

36
41
48

30
36
41

58
66
81

53
61
71

84
97
114

75
90
105

120
140
160