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Design effects on the fretting wear behaviour of ball bearings

1997; Elsevier BV; Volume: 30; Issue: 10 Linguagem: Inglês

10.1016/s0301-679x(97)00071-6

1879-2464

Masayuki Shima, Li Qijun, S. Aihara, Takashi Yamamoto, J. Sato, R B Waterhouse,

Gear and Bearing Dynamics Analysis

A change in design of a ball bearing is described based on the results of numerical and experimental analysis to reduce fretting wear. Increasing the radii of curvature of the inner and outer races by a small amount reduces the product of the relative slip δ and the tangential traction τ at the contact region, both of which are caused by Heathcote slip. This results in the consequent reduction in fretting wear because there is a good correlation between the amount of fretting wear and τδ. This prediction is confirmed experimentally by increasing the groove radius of the inner race from 4.02 to 4.21 mm for a ball of radius 3.97 mm.