A parched subregime of elastohydrodynamic lubrication is proposed, lying between starved and mixed. Parched EHL is necessary to describe instrument ball bearing behavior, for example: long term transients in film thickness. A parched bearing has the least driving torque demand and best spin axis definition possible from any lubrication regime. Some measurements made in a 40 mm bore bearing show that parched operation is not limited to small bearings.

Issue Section:
Research Papers
Topics:
Elastohydrodynamic lubrication, Bearings, Ball bearings, Film thickness, Instrumentation, Lubrication, Particle spin, Rotation, Spin (Aerodynamics), Torque, Transients (Dynamics)
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Copyright © 1985
 by ASME
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