Key Takeaways:
Beyond radial support, hydrostatic principles extend to axial and thrust bearings, holding axial float below 0.5 μm for stiff, thermally stable spindle and table stacks.
Axial Control Matters
In spindles and rotary tables, axial (thrust) load must be controlled as tightly as radial load. Conventional thrust bearings wear and develop axial float; hydrostatic thrust faces avoid this by floating on an oil film.

How It Works
An axial hydrostatic face uses the same principle as a radial film: oil is forced into a shallow recess, and a restrictor lets pressure self-adjust with load. The result is high axial stiffness and axial float held below 0.5 μm, with no contact wear.
Combined Stacks
Marusaku hydrostatic spindles and tables integrate radial and axial films into one rigid, non-contact assembly—giving full six-degree restraint without mechanical thrust washers that would wear and drift.