Question

A circular hydrostatic bearing with an outside diameter of 150 [mm], recess diameter of 60 [ mm] and rotating at 500 [rpm] supports a load of 50 [kN]. The bearing

is lubricated by a mineral oil of density p = 900 [kg/m] delivered to the bearing by a constant flow rate delivery pump operating at 50×10* [m°s"].The operating temperature of the bearing is 30°C. calculate the recess pressure and select an SAE oil such that the film thickness will never be less than 10 [um]. (Ans.P, = 6.173 [MPa], SAE20)

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