Key Takeaways:
Quick answers to the most common hydrostatic questions: does it need power, what oil cleanliness, can it run at low speed, how long does it last, and is it worth the cost?
Does 静压轴承 need power?
Yes—an external pump supplies 1–10 MPa oil through restrictors. 该 pumped film为为何 it works even at zero speed采用full 刚度.

What oil 清洁度为needed?
NAS 5 or better, because film为only 3–10 μm thick. Filters为serviced about every 500 hours.
Can it run at very low speed?
Yes—unlike hydrodynamic 轴承, 静压 支撑 has no low-speed 爬行, making it ideal用于indexing与fine feed.
How long does it last?
理论上 无限寿命:采用no contact wear, 精度与刚度 stay constant; limits为oil 质量与care, not 轴承.
Is it worth cost?
For 超精密, 振动-sensitive, or long-duty work, 精度, 刚度,与life usually justify higher upfront与energy cost. For coarse, high-speed, cost-driven duties, simpler 轴承 may be better.