Key Takeaways:
Keep a hydrostatic rotary table accurate for life with a simple routine: pre-run 10–15 min to build the film, maintain NAS 5 oil, service the filter ~500 h, and monitor pressure and film thickness.
Build the Film Before You Cut
After startup or long shutdown, run the table for 10–15 minutes before heavy cutting. This lets the pump, filtration, and temperature loop establish a complete, stable oil film so the worktable floats fully non-contact.

Routine Care
- Oil cleanliness NAS 5+; change oil ~2000 h or six months.
- Filter service ~500 h.
- Oil temperature 35±5°C; ambient 20±1°C ideal.
- Monitor supply pressure, flow, and film thickness; act on drift early.
- After long idle, periodically rotate the table to keep seals healthy and prevent contact.
Result
Following this keeps rotary positioning at ±0.001 mm and preserves the theoretically infinite life of the non-contact film.