Drilling depth mm 400 Winch lifting force T 1.5 Drilling aperture mm 105-325mm Outrigger travel m 1.5 Working wind pressure MPa 1.2-3.5 Footage efficiency m/min 10-35 Air consumption m3/min 16-55 Walking speed m/min 2.5 Drill pipe length m 6 Gradeability ° 20 Recommended drill pipe diameter mm 89-102 Total Weight T 10 Axial pressure T 4 Dimensions m 6.55�?1.9�?2.75 Lifting force T 22 Adapt to the conditions Unconsolidated formation and bedrock Advance itinerary m 7 Drilling method Hydraulic rotary and propulsion, down-the-hole hammer drilling Fast rising speed M/min 28 Equipped with impactor Medium and high pressure series impactor Fast forward speed M/min 55 Advance axial pressure, anti-axial pressure adjustable Maximum Swing Torque Nm 8000/4000 Engine KW Yuchai Engine Maximum rotation speed r/min 75/150 Engine speed r/min 1600-1800
