Mainly by motor, framework, other tube body, put on, turn tube, empty mandrel, big gear wheel, pinion, move it jaw board and quiet jaw board make up round in grades.

• 它主要由电动机、机架、外筒体、分级罩、回转筒、空心轴、大齿轮、小齿轮 、动颚板和静颚板组成。