1.Brief introductions of ZDY-650 full hydraulic tunnel drilling rig The ZDY-650 full hydraulic tunnel drilling rig is mainly used for drilling holes, grouting holes. The working area is more than 6.5 square meters, and the height is more than 2.3m. The width is more than 2.8m. It has two kinds of drills, which are split column rack and pedestal rack. It can choose different drilling rig according to the height and usage of underground roadway. 2.Specifications of ZDY-650 full hydraulic tunnel drilling rig Project Unit ZDY-650 Maximum drilling depth m 150 Open hole diameter mm 75/115 End hole diameter mm 65 Drilling pipe diameter mm 42 Drilling angle �° 0-�±90�° Output rotating speed r/min 95 Output torque n.m 650 Feeding force kn 48 Pullout force kn 35 Rated advance speed m/min 0-1.5 Feeding stroke mm 850 Hardness range (protodyakonov scale of hardness) / fâ?¤8 Noise db(a) â?¤92 Working efficiency % â?¥40 Main engine dimension(long * weight * high) mm 2200*600*500 Total weight (excluding drill rod) kg 1200 Pumping station pump discharge pressure mpa rotation 14/ feed 11 working medium / 46# Antiwear hydraulic oil tank capacity l 96.6 dimension (long *wide*high) mm 1480*700*650 Control station feeding pressure mpa 11 reverse rotation pressure mpa 13 forward rotation pressure mpa 12 dimension (long *wide *high) mm 500*400*450 Motor model / YBK2-160L-4 rated power kw 15 rated voltage v 380/660 660/1140 rated current a 30/17.5 17.5/10.1 rated rotating speed r/min 1460 Two layer steel wire braided hydraulic support rubber tube assembly RB2-6/10/13/16/19/22/25/32