Key Takeaways:
Unlike rolling bearings, hydrostatic support works from near-zero speed to tens of thousands of rpm. Understand the broadband capability that suits both heavy creep-feed grinding and high-speed finishing.
Broadband by Design
滚动 轴承 have limited comfortable speed range tied以cage与ball dynamics. 静压 支撑 has no such limit— 油膜 behaves consistently from standstill以very high surface speeds.

Low End
At low rpm film gives 爬行-free, high-刚度 支撑用于heavy creep-feed 磨削与precise indexing.
High End
At tens的thousands的rpm same film 保持 主轴 centered without contact wear, enabling high-speed finishing 该 滚动 elements struggle以sustain.
一 主轴, Many Jobs
该 broadband behaviour lets 单一 静压主轴 serve roughing, finishing,与high-speed duties—reducing need用于multiple dedicated 主轴与simplifying 机床.
Note
Ultimate speed为still set by 电机, balance,与thermal design, but 轴承 itself为not limiting factor.