... Mechanical speed The Radial Drilling Machine Model Z30100X25,Z30100X31 is a new series of diversified functions product which has been ... are adopted,the headstork,radial arm and columns are clamped by the hydraulic clamping mechanisms, and the spindle in turn foward ... postion are all controlled by a single-lever,the machine has the maintenance,hihg accuracy,ampler rigidity and long service life.It is ...