Open Access
Table 1
Operation condition.
| Operation condition | Parameters |
|---|---|
| Material of rolling ball | GCr15 |
| Diameter of rolling ball | 6.35 mm |
| Ra of rolling ball | 0.0054 μm |
| Load | 50–150 N |
| Maximum contact stress | 2.545–3.846 GPa |
| Rotate speed | 1000–3000 r·min−1 |
| Sliding-rolling ratios | 0.05–0.15 |
| Lubricant | 32# engine oil |
| Supply quantity of lubricant | 150 mL·min−1 |
| Lubricant supply state | Continuous |
| Time | 96 h (5760 min) |
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