Type TK6920A CNChorizontal boring machine cnc ground bore cnc boring machine Boring Shaft Diameter 200mm Boring Shaft Taper Bore ISO60 Spindle speed(manual third gear transferred plus stepless speed) 2-650rpm milling diameter of shaft 320mm Ram section size 480*520mm Boring axis travel(Zaxis) 1200mm Ram travel(Waxis) 1200mm Boring axis ram total stroke 2400mm Boring axis and Ram feeding speed 0.5-4500mm/min Boring axis and fast-moving pace of ram 4500mm/min Headstock travel(Yaxis) 3000/4000mm Headstock feed range(no grade) 1-4000mm/min Spindle Box fast-moving pace of 6000mm/min Previous Column travel(Xaxis) 6000/8000mm Pre-column feed rang (no grade) 1-4000mm/min Pre-column fast-moving pace of 6000mm/min Main motor power(frequency conversion motor) 75kw Machine Weight 115t