An Influence of Centrifugal Force on the Performances of Thermo-hydrodynamic Turbulent Thrust Bearings

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This paper presents a study on the influence of a centrifugal force on the performance characteristics of thermo-hydrodynamic turbulent thrust bearings. By applying a lubrication equation and an energy equation considering the combined effects of turbulence, centrifugal force and temperature rise in the film to plane inclined, sector shaped thrust bearings, the performance characteristics such as the film pressure, the minimum film thickness and the load carrying capacity are evaluated. The analysis shows that the centrifugal force affects significantly the film pressure and the load carrying capacity but insignificantly the friction torque and the temperature rise. The analytical results are compared with the experimental ones measured on the thrust bearing of 150 mm diameter with four sector shaped pads lubricated with spindle oil and water. The analytical results agree well with the experimental ones.
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