H,  Lubrication

Hydrodynamic Lubrication

A type of lubrication affected solely by the pumping action developed by the sliding of one surface over another in contact with an oil. Adhesion to the moving surface draws the oil into the high-pressure area between the surfaces, and viscosity delays the tendency to squeeze oil out. If the pressure developed by this action is sufficient to completely separate the two surfaces, full fluid-film lubrication prevails.

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