* Main characteristics of this machine tool * This machine tool consists of three axises. Three axis motions adopt the rolling ball screw of the servo motor. Among them, X-axis is the feed system, and Z1-axis and Z2-axis are three-axis linkage multifunction CNC grinding machine tool of the reciprocating system. * When clamping once, this machine tool can grind the work piece external and internal cylinder, inner taper hole,inner end face of stepped hole and outer end face. Grinding cycle is done automatically.