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Add:Wenzhou longwan shacheng yongfu puhedonglu 21.
Zip:325025
Tel:0577-86813988 86821988       86810711 86995298
Fax:0577-86828711
Web:www.chinahaixing.com
E-mail:master@chinahaixing.com
Director:Zhongjie Lin
table
   Rolling bearings steel ball Rolling Bearing Balls GB308-89   ISO3290-1998(E) STANDARD
Precision grades
Grade
Batch diameter changes
VDWL LOt Dia Variation
Customs value interval
Gauge Interval
Common customs value
Preferred Gauge
Regulatory points. Value
Subgauge Interval
2 Points customs value
Su1bgauge
μm
3
0.13
0.5
-5,......,-0.5,0,+0.5......,+5
0.1
-0.2,-0.1,0,+0.1,+0.2
5
0.25
1
-5,......,-1,0,+1......,+5
0.2
-0.4,-0.2,0,+0.2,+0.4
10
0.5
1
-9,......,-1,0,+1......,+9
0.2
-0.4,-0.2,0,+0.2,+0.4
16
0.8
2
-10,......,-2,0,+2......,+10
0.4
-0.8,-0.4,0,+0.4,+0.8
20
1
2
-10,......,-2,0,+2......,+10
0.4
-0.8,-0.4,0,+0.4,+0.8
28
1.4
2
-12,......,-2,0,+2......,+12
0.4
-0.8,-0.4,0,+0.4,+0.8
40
2
4
-16,......,-4,0,+4......,+16
0.8
-1.6,-0.8,0,+0.8,+1.6
60
3
5
-20,......,-5,0,+5......,+20
1
-2,-1.0,0,+1,+2
100
5
10
-40,......,-10,0,+10......,+40
2
-4,-2.0,+2,+4
200
10
15
-60,......,-15,0,+15......,+60
3
-6,-3.0,+3,+4

Precision grades
Grade
Ball diameter changes
VDWS Ball Dia.Variation
Spherical error
△sph Deviation From spherical Foem
The surface roughness Ra
Surface Roughness
No overtime No Larger Than
um
3
0.08
0.08
0.010
5
0.13
0.13
0.014
10
0.25
0.25
0.020
16
0.4
0.4
0.025
20
0.5
0.5
0.032
28
0.7
0.7
0.050
40
1
1
0.060
60
1.5
1.5
0.080
100
2.5
2.5
0.100
200
5
5
0.150
 
Precision grades Grsde
G20
G16
G10 G5 G3
Precision grades Vibration
Ball diameter Diameter
DM(mm)
Z1
Z2
Z3
More than Over
TO
average
Average
A single value
Max
average
Average
A single value
Max
average
Average
A single value
Max
4.5
6.5
39.5
41.5
37.5
39.5
35.5
37.5
6.5
7.5
40
42
38
40
36
38
7.5
10
40.5
42.5
38.5
40.5
36.5
38.5
10
11
42
44
40.5
42.5
38.5
40.5
11
12
42.5
44.5
41
43
39
41
12
13
43
45
41.5
43.5
39.5
41.5
13
14
43.5
45.5
42
44
40
42
14
15
44
46
42.5
44.5
40.5
42.5
15
16
44.5
46.5
42.5
44.5
40.5
42.5
16
17
45
47
43
45
41
43
17
17.5
45.5
47.5
43
45
41
43

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Add:Wenzhou longwan shacheng yongfu puhedonglu 21. Zip:325025
Tel:0577-86813988 86821988 86810711 86995298 Fax:0577-86828711
Web:www.chinahaixing.com E-mail:master@chinahaixing.com Technical support:Lianke Technology