Weight 26KG Length 660mm Cylinder Diameter 80mm Piston Structure Stroke 60mm Working Air Pressure Mpa 0.4 0.5 0.63 Full length Rock Drilling Impact Frequency Hz(Greater or equal to) 28 35 36 Drilling Gas Consumption L/s(Less than or equal to) 52 58 82 Impact Gas Consumption J(Greater or equal to) 44 63 70 Rotary Torque N m(Greater or equal to) 15 19 23 Drilling Speed Mm/Min(Greater or equal to) 250 400 470 Noise dB/A(Less than or equal to) 124 125 127 Average linear m before first failure M(Greater or equal to) 400 Drilling Depth Without Dismantling Machine M(Greater or equal to) 300 Inner Diameter of Gas Transmission Hose mm 25 Inner Diameter of water Delivery Hose mm 13 Borehole Diameter mm 34-42 Drill Tail Specification 22x108 ±1 Air leg length(mm) 1400 Advance Stroke MM 965 Cylinder Bore(mm) 65