In order to improve single productivity, and got parameters of steel ball rolling, This paper has done pass design and experiments of two grooves rolling steel ball.
为提高球磨钢球的单机生产率，并获取钢球轧制的力能参数，进行了钢球双头轧制孔型设计及实验。
The clamping of the friction disk is caused by the outwardly rolling of the steel ball along the slop rolling track under eccentric force.
离合器摩擦片的压紧是由钢球在离心力作用下沿斜面滚道向外滚动而引起的。
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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