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What is a hydrodynamic fluid film bearing?

 

Hydrodynamic PrincipleIn a fluid film bearing, the stationary and rotating surfaces are separated by a thin film of lubricant, such as oil, air, water or process fluid. In a hydrodynamic fluid film bearing, the film pressure that separates the surfaces is created by the relative motion (rotation) of the surfaces as the lubricant is pulled into a converging geometry between the surfaces.

No contact of the surfaces takes place except during start-up and shutdown.