Drilling ParameterHole diameter :90--1200(mm)Hole depth :250(m)Run Of Rod :3 4(m)Drill rod diameter :φ60 φ73 φ89 φ95 φ133(mm)Drilling Technology :Normaland Reverse Circulation for both Mud and AirDown-The-Hole hammers:Middle-High-Pressure AirPerformance parameterDrill Head Inside Diameter :φ60 φ80 φ120Drill Head lifting speed(m/s) :0.37 0.16Drill Head lifting Force(kN) :45.4 105Drill Head Spin Speed:A(Forward:14-23-52-84,Reverse:8-13-29-47r/min )B(Forward:32-52-116-188,Reverse:18-29-65-106r/min )Shape ParametersDimensions :( L-W-H) Working conditions 7900×2370×7200(mm)Transport status:( L-W-H) 8450×2370×3400(mm)Supporting Form :Hydraulic UnitMast Up-Down :Hydraulic UnitRig mass :9100(Kg)Chassis :Dong Feng EQ1093 (four-wheel drive)Power Unit :Diesel EnginePower :42(kW)Pump :BW450 Mud PumpFlow(L/min) :450Pressure(Mpa)1.2Main Hoist Lifting Force :20.6(kN)Feed Thrust :0-15 ( kN )Notes: Drill head spin speed can be selected, A is normal