Experimental Study on the Mechanism of Lubrication in Hydrodynamic Porous Thrust Bearings With a Wavy Surface

[+] Author and Article Information
Shigeru Ohtsuka

Department of Mechanical Engineering, Yonago National College of Technology, Hikona-cho, Yonago-City, 4448, Japan

Motozo Hayakawa

Department of Mechanical Engineering, Tottori University, Koyama-cho, Tottori-City, 101, Japan

J. Tribol 121(3), 538-545 (Jul 01, 1999) (8 pages) doi:10.1115/1.2834101 History: Received December 01, 1997; Revised July 07, 1998; Online January 24, 2008


Hydrodynamic fluid lubrication theory is applied to thrust bearings with three-dimensional, wave-shaped axial end surfaces. Optimizations of the wave height and surface porosity are experimentally determined using lubrication characteristics such as the friction coefficient and worn-out surface conditions. Lubrication characteristics such as the friction coefficient, temperature rise, thrust flotation, and oil consumption rate are evaluated for an estimation of life expectancy. In this research, the results of this theoretical application on thrust bearings clearly showed considerable improvement over conventional thrust bearings. Furthermore, this experimental research has clarified the lubrication conditions of various thrust-loaded axial end surfaces.

Copyright © 1999 by Journal of Tribology
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