Hydrostatic spindle omlat

This is the designation of fluid-friction plain bearings, where pressurised fluid flows between metal surfaces and keeps them continuously at a distance. This permits to get a constant lift, both when the bearing is still and rotating at maximum speed, and the breakaway friction results to be almost null.
Thanks to their high load capacity and rigidity and slight sizes (spindles having the same sizes and using standard bearings cannot get the same performances), added to a high rotation accuracy, the hydrostatic lift bearings are typically used for external, cylindrical or surface grinding operations, with grinding wheel having big diameter > than 400 mm.
The hydrostatic-lift power spindles are widely used on test benches, where assemblies have to be put on rotation, and external vibrations and noise can upset the measurement of parameters characteristic of the tested product.

Here we indicate the speed range of the hydrostatic spindles.
- Speed: range from 1000 to 2000 min-1
- Wheel: range from ø400mm to ø1000mm

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