The main bearing and each dial are driven by electromotor of main machine through reducer, and numbers of roller which are rolling in the ring, which are driven by dial through plunger.

• 主机电动机通过减速器带动主轴及各层转盘旋转，转盘通过柱销带动几十个环辊在磨环滚道内滚动并旋转。