The radial internal clearcance of bearing is specified
into five groups according to the chinaese state standards
of GB/T4604-93 and listed as follows：
| Bearing bore(mm) |
Group 2-C2 |
Srandard group 0 |
Group 3-C3 |
Group 4-C4 |
Group5-C5 |
| From |
To |
min |
max |
min |
max |
min |
max |
min |
max |
min |
max |
| 2.5 |
6 |
0 |
7 |
2 |
13 |
8 |
23 |
- |
- |
- |
- |
| 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 |
2 |
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 |
Special requirements for radial internal clearance or axial
internal clearance can be met according to stipulations
in orders。 |
