Question

Hydraulics and Pneumatics

A pump capable of maintaining 20 [MPa] of pressure is supplying oil of viscosity 80 [cP] to a circular hydrostatic thrust bearing of an outside diameter of 0.1 [m] at a rate of 0.4x10* [m/s], generating a steady film thickness of 30 [um]. The bearing supports a weight of 60 [kN] and rotates at 1,000 [rpm]. Calculate a suitable recess radius and pumping power. (Ans. R, = 0.0285 [m], H= 50.89 [W])


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