... gear 4.automatic risen&fallen 5.automatic feed radial drilling machine ZQ3050x16The radial drilling machine of Model Z3050×16 is one of the large ... high efficiency ,close tolerance, hydraulic retransmission with a machine. Drilling diameter of 50 mm,and is used to drill, expand, ream, groove, tap the ... (L*W*H)mm2170*810*2450 HOT!! 2012 Good Quality and Low Price Z3050 X 16 Radial Drilling Machine