Gl120y hydraulic crawler drill rig powers the moving of the oil hydraulic motor, rotation, propelling and lifting, Swing angle location etc. By diesel engine( or electromotor) driving the hydraulic oil pump. It could match with dth hammer and bit for the hard rock drilling or auger drill rod for the medium-soft formation drilling. Gl120y is good for blasting hole in surface mine, water electric building, road construction and piling project. Main parameters of gl120y hydraulic crawler drill rig Hole diameter(dth) 90-140mm Hole diameter(auger) 90-350mm Hole depth 30-90m Hammer 4, 5, 6inch Drill rod 60mm, 76mm, 89mm Air pressure 1.05-2.4mpa Air consumption 11.3--24m/min Max. Hole hight (horizontal) 3.1m Angle of guide up 45, down 60 Max. Swing angle of frame right 35, left50 Boom swing left 45 right 45 Angle of boom up 48, down 19 Lift up >30000n Rotary speed 0-90r/min Rotation torque 3000n.M Traveling speed 0-2.5km/h Braking wet-type double disk, release Hydraulic oil, spring application Grade ability 26 Transportation dimensions 6000*2300*2400mm Weight 7.0t Diesel engine yuchai 70kw or Cummins 56kw