Experiment on Mixed Lubrication of Hydrostatic Thrust Bearings for Hydraulic Equipment

[+] Author and Article Information
Toshiharu Kazama, Atsushi Yamaguchi

Department of Mechanical Engineering and Materials Science, Yokohama National University, 156, Tokiwadai, Hodogaya-ku, Yokohama, 240, Japan

J. Tribol 117(3), 399-402 (Jul 01, 1995) (4 pages) doi:10.1115/1.2831265 History: Received February 02, 1993; Revised June 30, 1994; Online January 24, 2008


Mixed lubrication characteristics of hydrostatic thrust bearings are examined experimentally. The effects of the surface roughness, supply pressure, loads, speed of rotation and size of restrictors on the frictional force, leakage-flow rate and power losses are clarified. Introducing the concept of mean pressure based on load-carrying capacity due to asperities, and the ratios of hydrostatic balance and leakage-flow rate, the experimental data can be normalized. Also good agreement is found between theoretical results based on a mixed lubrication model presented in a previous paper and the experiment.

Copyright © 1995 by The American Society of Mechanical Engineers
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