... the high efficiency ,close tolerance, hydraulic retransmission with a machine. Drilling diameter of 80mm,and is used to drill, expand, ream ... sells well at home and abroad.Z3063X20 Radial Drilling Machine Specifications 1 Max. drilling diameter 63mm2 Distance from center line of main ... of main spindle speed rates 1613 Main spindle travel 315mm14 Drilling depth per each rev.on index plate 122mm15 Max. ...