Key Takeaways:
Marusaku hydrostatic spindles support both three-jaw chucks for rigid mechanical clamping and vacuum chucks for thin or delicate parts. Choose based on workpiece shape and material.
Two Proven Workholding Methods
A precision spindle is only as good as how it holds the part. Marusaku hydrostatic spindles can be equipped with a three-jaw chuck for strong, repeatable mechanical clamping of solid workpieces, or a vacuum chuck for thin, fragile, or flat parts that a jaw would distort.

Matching Chuck to Part
Use the three-jaw chuck for robust cylindrical blanks where grip force matters. Use the vacuum chuck for optics, wafers, and thin discs where uniform, non-distorting support protects form accuracy—complementing the spindle's own non-contact stability.
Consistency
Either way, the hydrostatic film keeps the rotating assembly stable, so clamping choice affects handling, not the underlying motion quality.