On the lift-off speed in journal bearings

Document Type

Article

Publication Date

3-1-2006

Abstract

A series of experiments with a journal bearing operating under different loads, oil temperatures, and oil type were carried out to characterize the Stribeck curve. Focus was on the behavior of the lift-off speed and the factors that affect it. Increasing oil temperature and load shifted the lift-off speed to the right. In mixed or boundary lubrication regime, a higher temperature created a greater friction coefficient, while in the full-film lubrication regime, the opposite occurred. A higher load caused a small friction coefficient in the full-film lubrication regime. An equation derived based on the numerical solution of the finite Reynolds equation effectively predicted the lift off speed.

Publication Source (Journal or Book title)

Tribology and Lubrication Technology

First Page

40

Last Page

46

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