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Abstract
Rolling contact fatigue life under debris- (or foreign particle-) contaminated lubrication is less than one-tenth the life under non-contaminated lubrication when the contaminating debris is hard, large particles (0.1 mm). A small “crevasse-type” crack initiates at the forward or backward side of a debris Particle indentation and grows into fatigue flaking. The size of the initial crack can be described by a parameter of the material called “crack sensitivity” in this paper. Relation between heat treatment conditions and the crack sensitivity of the ball bearing steel was investigated. The heat treatment which decreased crack sensitivity increased rolling contact fatigue life significantly not only under debris contaminated lubrication but also under noncontaminated lubrication.
Presented at the 36th Annual Meeting in Pittsburgh, Pennsylvania, May 11–14, 1981
Notes
Presented at the 36th Annual Meeting in Pittsburgh, Pennsylvania, May 11–14, 1981