Key Takeaways:
Hydrostatic ways apply the same oil-film principle to linear axes, giving machine-tool carriages sub-micron straightness, no stick-slip, and infinite-life guidance.
From Rotation to Linear Motion
The hydrostatic principle is not limited to spindles and rotary tables—it extends to linear ways. Oil is pumped into recesses along the guideway, floating the carriage on a thin film so it slides without touching the rail.

Benefits on the Carriage
The film gives the same advantages as rotary hydrostatic support: no wear, no stick-slip at low feed, high stiffness, and oil-film damping. The result is sub-micron straightness and repeatable linear motion free of the crawl that limits ball or roller ways.
Where It Pays Off
Hydrostatic ways suit ultra-precision grinding, measuring, and large machine tools where carriage accuracy and long-term stability decide part quality. Marusaku applies the principle consistently across its hydrostatic product family.