The fatigue life for hybrid rolling ball bearing is researched on the base of its breakdown mechanism and fatigue life of steel bearings. Its fatigue life formula is given.

根据混合轴承的破坏机理，在钢轴承使用寿命公式的基础上，对混合轴承的使用寿命进行探讨，推导出它的寿命公式。

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Surface defect of steel ball is main reason for bearing fail. This paper developed a sort of surface defect detect system based on machine vision to apply in steel ball.

由于钢球表面的缺陷是造成轴承失效的主要原因，本文研发一种面向轴承企业应用基于机器视觉的钢球表面缺陷检测系统。

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