Key Takeaways:
A hydrostatic system should pre-run 10–15 minutes after startup or long shutdown. This establishes a full oil film, stabilizes temperature, and protects the non-contact surfaces from any touching.
From Cold to Floating
When a hydrostatic machine starts, the oil supply, filtration, and temperature loop must reach steady state before the film is uniform and complete. Running the axes for 10–15 minutes lets pressure, flow, and temperature settle so the worktable or shaft floats fully on oil.

What the Pre-Run Does
- Fills and pressurizes every cavity evenly.
- Brings oil into the 35±5°C band for stable film geometry.
- Confirms supply pressure and flow are nominal before load.
- Protects the bearing: if the film is incomplete, surfaces could touch and score.
Habit, Not Hazard
Treating the pre-run as a fixed startup step—especially after a long shutdown—turns 'theoretically infinite life' into a reliable, repeatable reality.