Grade | Ball diameter variation | Deviation from spherical form | Surface roughness
| Lot diameter variation | Basic deviation tolerance |
Vdws | ΔSph | Ra | Vdwl | Tdn | |
3 | 0.08 | 0.08 | 0.012 | 0.13 | ±0.75 |
5 | 0.13 | 0.13 | 0.02 | 0.25 | ±1.25 |
10 | 0.25 | 0.25 | 0.025 | 0.5 | ±2.5 |
16 | 0.4 | 0.4 | 0.032 | 0.8 | ±2.5 |
24 | 0.6 | 0.6 | 0.05 | 1.2 | ±2.5 |
48 | 1.2 | 1.2 | 0.08 | 2.4 | ±5 |
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 |