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Ball
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The products are GCr15 chrome steel ball, stainless steel ball, carbon steel ball, ceramic ball, dyeing ball, glass ball, brass ball, perforated ball, Magnet ball and so on. The specification is from 0.5mm-50.8mm (we also can make the non-standard specifications balls according to the customer), the precision is from 5-500 grade. The products are widely used in the industries such as aeronautics and astronautics industry, automobile industry, precise apparatus, meters, motorcycle, bicycle, bearing, medical apparatus and food machinery etc.
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TECHNICAL PARAMETER :
Grade |
ball diameter
variation |
deviation from spherical
from |
surface soughness |
lot diameter variation |
nominal ball deviation
tolerance |
Vdws |
△Sph |
Ra |
Vdwl |
Tdn |
not over |
μm |
10 |
0.25 |
0.25 |
0.025 |
0.5 |
* |
16 |
0.4 |
0.4 |
0.032 |
0.8 |
* |
20 |
0.5 |
0.5 |
0.05 |
1 |
* |
28 |
0.7 |
0.7 |
0.05 |
1.5 |
* |
40 |
1.0 |
1.0 |
0.08 |
2 |
* |
60 |
1.5 |
1.5 |
0.10 |
3 |
* |
100 |
2.5 |
2.5 |
0.125 |
5 |
±12.5 |
200 |
5 |
5 |
0.5 |
10 |
±25 |
500 |
13 |
13 |
* |
25 |
±50 |
1000 |
25 |
25 |
* |
50 |
±125 |
Lot Diameler Variation and Normal Gauge, Subgauge
Grade |
lot diameter variation |
guages interval |
preferred guages |
subguage interval |
subguages |
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 |
-0.8,0.4,1,+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,+1,+2 |
Case
Depth Requirements for carbon steel balls
nominal
faiameter |
minimum case depth |
≥at least |
＜at least |
0.3 |
1.5 |
0.1 |
1.5 |
2.0 |
0.4 |
2.0 |
3.0 |
0.5 |
3.0 |
4.5 |
0.6 |
4.5 |
5.5 |
0.8 |
5.5 |
6.5 |
0.9 |
6.5 |
9.5 |
1.1 |
9.5 |
11.0 |
1.4 |
11.0 |
12.5 |
1.7 |
12.5 |
14.0 |
1.8 |
14.0 |
19.0 |
1.9 |
19.0 |
38.0 |
2.0 |
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