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| Radial internal clearance
¡¡¡¡The radial internal clearance
of bearing is specified into five groups according to the
Chinese State Standards of GB/T4604-93 and listed as follows:
| bearing bore(mm) |
group 2-C2 |
Standard grovp
O |
group 3-C3 |
group 4-C4 |
group 5-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 |
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 |
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| Shield & Seal
¡¡¡¡Bearing are divided into various
types such as open, with single or double shields (Z,2Z)
and with seals (RS,2RS).When double-shield or seal bearings
leave the factory, grease has been filled in them according
to relative requirements. Upon being unpacked, theese bearings
can be directly put into use at the service temperature
of-40¡æ~200¡æ.When bearings need to work under special conditions,
clients should enclose grease volume and brand name of grease
or other requirements.
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| Vibration
¡¡¡¡The vibration of bearing is represented by Z1,Z2,Z3,and
Z4,.It is tested by the instrument of
SO910.When there are special requirements, It can be tested
by BVT-1 and represented by V1,V2,V3
and V4,Clients are required to note
vibration requirement in orders. |
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