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| Steel milling balls for sale |
|
- Sizes for ball mills: 30, 40, 50, 60 mm
- Standards: GOST 7524-89, DSTU 3499-97
- It is also possible to produce steel balls with hardness on the surface not less than 56 HRc ensuring capacity hardness is not less than 55 HRc.
|
| Tentative diameter, mm |
Nominal diameter, mm |
Limiting deviation as per nominal diameter, mm |
Calculative nominal mass, kg |
|
| 30 |
31.5 |
± 2 |
0.128 |
|
| 40 |
41.5 |
± 2 |
0.294 |
|
| 50 |
52.0 |
± 3 |
0.58 |
|
| 60 |
62.0 |
± 3 |
0.98 |
|
The following groups of steel balls are produced:
- of normal hardness of general use;
- of extra-high hardness of general use;
- of high hardness;
- of super-high hardness.
|
| Hardness HRC (HB) for groups, not less |
| 1 |
2 |
3 |
4 |
4 |
| on the ball surface |
for 1/2 rad. |
|
| 43 (401) |
49 (461) |
55 (534) |
55 (534) |
45 (415) |
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