In order to improve single productivity, and got parameters of steelballrolling, This paper has done pass design and experiments of two grooves rollingsteelball.
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。
2
The clamping of the friction disk is caused by the outwardly rolling of the steelball 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。
3
The fatigue life for hybrid rollingball bearing is researched on the base of its breakdown mechanism and fatigue life of steel bearings. Its fatigue life formula is given.