Dear Visitors We will attend in 2014 CHINA INTERNATIONAL BEARING INDUSTRY EXHIBITION, taking place on 18 Sep, 2014 to 21 Sep, 2014, in SHANGHAI WORLD EXPO EXHIBITION & CONVENTION CENTER. Our Hall Number is: H2, Booth Number is: G128 Thanking you!     Thank you.

Deep Groove Ball Bearing
Technology
Bearing Material
High carbon chromium bearing steel is the best material for bearing. It features high hardness, strong rolling fatigue resistance, abrasion resistance and stable sizes.
Chemical compositions of GCr15 (SAE52100) are shown on following table.

Chemical Composition %
C
0.95~1.05
Cr
1.40~1.65
Si
0.15~0.35
Mn
0.25~0.45
P
0.027
S
0.02
Chemical Composition %
Ni
0.23
Cu
0.25
Mo
0.1
Sn
0.03
As
0.04
Ti
0.005
Chemical Composition %
Sb
0.002
Pb
0.002
O
0.001
Ai
0.05
Ca
0.01
 

Stainless steel bearing parts material table:

Part Name
INNER RING
OUTER RING
BALL
CAGE
SHIELD
SEAL
Material No
AISI440B
(9Cr18Mo)
AISI440B
(9Cr18Mo)
AISI440B
(9Cr18Mo)
AISI304
AISI304(302)
NBR
AISI440C
(9Cr18)
AISI440C
(9Cr18)
AISI440C
(9Cr18)
AISI304
AISI304(302)
NBR

The Chemical Composition of different stainless steel number.

Stainless steel No
C%
Cr%
Si%
Mn%
S%
P%
Mo%
Ni%
AISI440B
0.90~1.00
17~19
0.8
0.8
0.3
0.035
 
 
AISI440C
0.95~1.10
16~18
0.8
0.8
0.3
0.035
0.4~0.7
 
AISI304
0.07
17~19
1
2
0.3
0.035
 
8~11

 
Tolerance
Bearing tolerance refers to the size accuracy and running accuracy. The different international standard accuracy as below:

Standard code
Precision class
CHINA GB
0
6
5
4
2
ISO
0
6
5
4
2
ANSI
ABEC-1
ABEC-3
ABEC-5
ABEC-7
ABEC-9
SKF
P0
P6
P5
P4
P2
DIN
P0
P6
P5
P4
P2
JIS
0
6
5
4
2

We offer the bearings with P6, P5 accuracy level.
 
Bearing Internal Clearance
The internal clearance of running ball bearings greatly influences bearing performance including fatigue life, vibration, noise and heat generation etc. Consequently, it is necessary to select the proper clearance considering the bearing fitting, load, rotation speed and running temperature etc.
Radial internal clearance  µm

Bore Size (mm)
C2
C0
C3
C4
C5
Over
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
23
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

Noise and Vibration of bearing
The Noise is measured by the instrument of SO910. The Vibration is measured by BVT-1. the data as bellows:
Noise  (dB )

Bore Size
d (mm)
Single Bearing Vibration (Acceleration) Limit Value (dB)
Diameter Series 0
Diameter Series 2
Diameter Series 3
Z
Z1
Z2
Z3
Z
Z1
Z2
Z3
Z4
Z
Z1
Z2
Z3
Z4
5
37
36
34
30
38
37
34
32
-
39
37
35
33
-
6
37
36
34
30
38
37
34
32
-
39
37
35
33
-
7
39
38
35
31
40
38
36
34
-
-
-
-
-
-
8
39
38
35
31
40
38
36
34
-
-
-
-
-
-
9
41
40
36
32
42
40
37
35
-
-
-
-
-
-
10
43
42
38
33
42
40
39
35
30
46
44
40
37
32
12
44
43
39
34
45
43
39
35
30
47
45
40
37
32
15
45
44
40
35
46
44
41
36
31
48
46
42
38
33
17
46
44
40
35
47
45
41
36
31
49
47
42
38
33
20
47
45
41
36
48
46
42
38
33
50
48
43
39
34
25
48
46
42
38
49
47
43
40
36
51
49
44
41
37
30
49
47
43
39
50
48
44
41
37
52
50
45
42
38
35
51
49
45
41
52
50
46
43
39
54
52
47
44
40
40
53
51
46
42
54
52
47
44
40
56
54
49
45
41
45
55
53
48
45
56
54
49
46
43
58
56
51
47
44
50
57
54
50
47
58
55
51
48
45
60
57
53
49
46
55
59
56
52
49
60
57
53
50
-
62
59
54
51
-
60
61
58
54
51
62
59
54
51
-
64
61
56
53
-

Single Bearing Vibration (Speed) Limit Value  (µm/s)

Bore Size
d (mm)
Single Bearing Vibration (Speed) Limit Value (um/s)
V
V1
V2
V3
V4
L
M
H
L
M
H
L
M
H
L
M
H
L
M
H
5
110
72
60
74
48
40
58
36
30
35
21
18
32
11
11
6
110
72
60
74
48
40
58
36
30
35
21
18
32
11
11
7
130
96
80
92
66
54
72
48
40
44
28
24
38
12
12
8
130
96
80
92
66
54
72
48
40
44
28
24
38
12
12
9
130
96
80
92
66
54
72
48
40
44
28
24
38
12
12
10
160
120
100
120
80
70
90
60
50
55
35
30
45
14
15
12
160
120
100
120
80
70
90
60
50
55
35
30
45
14
15
15
210
150
120
150
100
85
110
78
60
65
46
35
52
18
18
17
210
150
120
150
100
85
110
78
60
65
46
35
52
25
25
20
260
190
150
180
125
100
130
100
75
80
60
45
60
25
25
25
260
190
150
180
125
100
130
100
75
80
60
45
60
30
32
30
300
240
190
200
150
130
150
120
100
90
75
60
70
35
40
35
300
240
190
200
150
130
150
120
100
90
75
60
70
42
45
40
360
300
260
240
180
160
180
150
130
110
90
80
82
50
50
45
360
300
260
240
180
160
180
150
130
110
90
80
82
60
60
50
420
320
320
280
200
200
210
160
160
125
100
100
95
70
70
55
 
 
 
280
220
200
210
180
180
125
110
110
 
 
 
60
 
 
 
320
220
240
240
180
200
145
110
130
 
 
 

 
Lubrication
Normally we provide two kind of lubricating method. Oil lubricating and Grease lubricating.
Grease No. of CHBO bearing.

Brand
Grease No.
Range of temperature
Characteristic
KYODO
Multemp SRL
 
 
 
Multemp PS