The radial clearance of bearings are divided into groups according to GB4604 National Standard as following table.

bearing bore
(mm)
group 2-C2
basic group C0
group 3-C3
group 4-C2
group 5-C5
over
incl
min
max
min
max
min
max
min
max
min
max
10
18
0
8
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

   Special radial clearance or axial clerance requirement could be made as specified in orders

bearing bore
(mm)
group 2-C2
basic group C0
group 3-C3
over
incl
min
max
min
max
min
max
-
10
1
11
5
21
12
28
10
18
1
12
6
23
13
31
18
24
2
14
7
25
16
34
24
30
2
15
8
27
18
37
30
40
2
16
9
29
21
40
40
50
2
18
11
33
23
44
50
65
3
22
13
36
26
48
65
80
3
24
15
40
30
54
80
100
3
26
18
46
35
63

 


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