... transmission 2.Mechanical clamping 3.Mechanical speed The Radial Drilling Machine Model Z30100X25,Z30100X31 is a new series of diversified ... (ISO) in the reccent years. In this machine, hydraulic reselections speed and chang mechhanisms are adopted,the headstork,radial arm ... controlled by a single-lever,the machine has the maintenance,hihg accuracy,ampler rigidity and long service life.It is ...