Key Takeaways:
The machined flatness of each oil cavity must be held within 0.5 μm. Even a slightly uneven cavity makes the oil film non-uniform and undermines the bearing's accuracy.
Cavity Is 轴承 Surface
In 静压轴承, oil cavity— recessed pocket 该 receives 加压 oil—is part的 精度 surface. If its machined 平面度为off, 油膜 thickness becomes uneven across pocket,与 film can no longer 支撑 load uniformly.

0.5 μm Rule
For 精度 静压 components, oil-cavity 平面度为held within ≤0.5 μm. Achieving 该 demands high-grade machining与metrology—far tighter than ordinary mechanical parts.
为何 It 至关重要
Uniform film thickness为what converts simple oil layer into stiff, accurate 轴承. Cavity 平面度为therefore quiet but critical determinant的 sub-micron performance 丸作精工's 静压 products deliver.