Characteristics of an Externally Pressurized Bearing Having Variable External Flow Restrictors

[+] Author and Article Information
J. E. Mayer, M. C. Shaw

Massachusetts Institute of Technology, Cambridge, Mass.

J. Basic Eng 85(2), 291-296 (Jun 01, 1963) (6 pages) doi:10.1115/1.3656579 History: Received January 08, 1962; Online November 03, 2011


An externally pressurized bearing having variable external flow restrictors has been investigated and compared to a conventional externally pressurized journal bearing having fixed external restrictors. The variable restrictor considered was adjusted by means of a journal load sensing device and its resistance to flow varied linearly with load. Use of this variable resistance was found to greatly increase the bearing stiffness compared to that for a bearing equipped with conventional fixed external restrictors. For the bearing geometry and supply pressure employed, a bearing stiffness of at least 50 × 105 lb/in. was achieved. A design procedure that provides a given stiffness is presented.

Copyright © 1963 by ASME
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