In the present study, the sliding wear process of white metal lined bearing was studied under a several static loadings with various rotational speeds of the shaft. And effects of both the shaft revolution speed and compressive contact stresses on the damage evolution and cut-off fatigue lives of the bearing were investigated. The experimental results were considered and discussed on the basis of the frictional stress between the shaft and the bearing. As a result, it was clarified that the cut-off fatigue lives of the bearing under various testing conditions involving contact stresses as well as shaft speeds were determined only by the amount of the frictional stress between shaft and the bearing. Also there is the endurance limit τ
w (= 0.2MPa) for the present bearing, below which no damages initiate on the sliding surface of the bearing.
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