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  Products List
   Product Introduction
   Metric series specifications
   Inch series specifications
  Business Contact
Add: NO.439 Dongchang
        Road, Ningbo, China
P.C.: 315021
General Manager:
Chen Zhongwei
http://www.zwbearing.com
Sales Manager: Lily/Johnson
Tel: 0086-13968302681
Fax: 0086-0574-87638005
E-Mail: lily1981@139.com
 
 
 
Product Introduction

Material:
Miniature bearing ferrule and a steel ball by refining bearing chromium steel GCr15 (AISI 52100) or 9Cr18 (AISI440) made of stainless steel, the user can also use other materials according to specified order.

Precision:
Precision miniature bearings are now divided into three levels: the precision level P5, advanced P6 and common P0.

Internal ring accuracy:(1)

d(mm)

dmp
Vdp
Vdmp
P0(ABEC-1)
P6(ABEC-3)
P5(ABEC-5)
P0
P6
P5
P0
P6
P5
Diameter series
7.8.9
0
2.3
7.8.9
0
2.3
7.8.9
0.2.3
Over
Incl
Lower
Lower
Lower
Max
Max
0.6
2.5
-8
-7
-5
10
8
6
9
7
5
5
4
6
5
3
2.5
10
-8
-7
-5
10
8
6
9
7
5
5
4
6
5
3
10
18
-8
-7
-5
10
8
6
9
7
5
5
4
6
5
3


External ring accuracy:(1)

d(mm)

dmp
Vdp
Vdmp
P0(ABEC-1)
P6(ABEC-3)
P5(ABEC-5)
P0
P6
P5
P0
P6
P5
Open
Zz
Open
Zz
Open
Diameter Series
7.8.9
0
2.3
2.3
7.8.9
0
2.3
0.2.3
7.8.9
0.2.3
Over
Incl
Lower
Lower
Lower
Max
Max
2.5
6
-8
-7
-5
10
8
6
10
9
7
5
9
5
4
6
5
3
6
18
-8
-7
-5
10
8
6
10
9
7
5
9
5
4
6
5
3
18
30
-9
-8
-6
12
9
7
12
10
8
6
10
6
5
7
6
3


Clearance:

Miniature bearings are divided into five groups according to ISO5753 standard provisions, General Factory made according to provisions of the basic group, the user can according to requirements specified tolerance group order.

CLEARANCE

Bore Diameter d(mm)

Clearance
C2
CN(co)
C3
C4
C5
Over
Incl
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
2.5
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


Lubrication:
Miniature bearings factory filling instrument oil or grease, the bearings are suitable for the work temperature of -30 DEG -100 DEG in special working conditions, the user can choose the lubricants or other lubricating mode, the user can be specified in the contract.

Packaging:
Miniature bearings for plastic pipe or a plastic bag and then in carton, other packaging can be according to the stipulations of the contract.

 
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