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Design effects on the fretting wear behaviour of ball bearings |
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| Authors: | M. Shima Li Qijun S. Aihara T. Yamamoto J. Sato R.B. Waterhouse |
| Affiliation: | aDepartment of Mechanical Engineering, Tokyo University of Mercantile Marine, Etchujima, Koto-ku, Tokyo 135, Japan;bPrecision Component Division, Riken Co. Ltd, Suehiro 4-14-1, Kumagaya-shi, Saitama 360, Japan;cResearch and Development Centre, NSK Ltd, Kugenuma-Shinmei 1-chome, Fujisawa-shi, Kanagawa 251, Japan;dDepartment of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, 24-16, Naka-cho 2-chome, Koganei-shi, Tokyo 184, Japan;eDepartment of Mechanical Engineering, Saitama University Shimookubo, Urawa-shi, Saitama 338, Japan;fDepartment of Materials Engineering and Materials Design, University of Nottingham, University Park, Nottingham NG7 2RD, UK |
| Abstract: | 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. |
| Keywords: | fretting wear ball bearing prevention of fretting |
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