The contact stress of ball bearing is an important parameter to characterize the load capacity of it,and also determines the fatigue spalling state of the ball bearing sub-surface,which is of great significance to the fatigue life analysis.In this paper ANSYS is used to analyze the maximum contact stress and stress distribution state of ball bearing,and through practical examples to verify its accuracy.The evaluation criteria of contact stress are summarized and improved,which provides reliable methods and data for engineering application expansion.
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