Static Characteristics of a Rectangular Hydrostatic Thrust Bearing With a Self-Controlled Restrictor Employing a Floating Disk

[+] Author and Article Information
S. Yoshimoto, Y. Anno, M. Fujimura

Department of Mechanical Engineering, Science University of Tokyo, Tokyo, 162, Japan

J. Tribol 115(2), 307-311 (Apr 01, 1993) (5 pages) doi:10.1115/1.2921007 History: Received April 01, 1992; Revised August 01, 1992; Online June 05, 2008


This paper proposes a new type of a self-controlled restrictor which can achieve a very high bearing stiffness in hydrostatic bearings. This self-controlled restrictor employs a floating disk to control the mass flow rate of the oil entering the bearing clearance according to changes of the applied load. Furthermore, a hydrostatic bearing with this restrictor can theoretically achieve an infinite stiffness when the mass of a floating disk is assumed to be zero. The static characteristics of a rectangular hydrostatic thrust bearing with this self-controlled restrictor are theoretically and experimentally investigated. It was consequently shown that the proposed hydrostatic thrust bearing can achieve a very high stiffness (nearly infinite stiffness) in a very wide range of applied load independent of supply pressure.

Copyright © 1993 by The American Society of Mechanical Engineers
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