Static Properties of Hydrostatic Thrust Gas Bearings With Curved Surfaces

[+] Author and Article Information
F. H. Rehsteiner

Enfo A. G., Schaan, Principality of Liechtenstein

R. H. Cannon

Stanford University, Stanford, Calif.

J. of Lubrication Tech 94(1), 49-55 (Jan 01, 1972) (7 pages) doi:10.1115/1.3451634 History: Received July 09, 1971; Online October 18, 2010


The classical treatment of circular, hydrostatic, orifice-regulated thrust gas bearings, in which perfectly plane bearing plates are assumed, is extended to include axisymmetric, but otherwise arbitrary, plate profiles. Plate curvature has a strong influence on bearing load capability, static stiffness, tilting stiffness, and side force per unit misalignment angle. By a suitable combination of gas inlet impedance and concave plate profile, the static stiffness can be made almost constant over a wide load range, and to remain positive at the closure load. Extensive measurements performed with convex and concave plates agree with theory to within the experimental error throughout and demonstrate the practical feasibility of using curved plates.

Copyright © 1972 by ASME
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