... diameter of 16mm or small. It is widely used in machine works, hard ware, instruments and gauge industries, and repair shops ... , 2160r/minMicro feed of spindle0.10, 0.16, and 0.25 mm/rDistance from spindle axis to column surface230mmWorktable sizeRound: 420mm ... releasing4. Assembly of feed wheel5. Texrope6. Reducing sleeve automatic drilling machine