China DTH Hammer Mining Machinery Water Well Drilling Tools HD40A Without Foot Valve High Air Pressure Rock Drilling, Find details about China High Air Pressure, Rock Drilling from DTH Hammer Mining Machinery Water Well Drilling Tools HD40A Without Foot Valve High Air Pressure Rock Drilling
Length | Weight | Outer diameter | Bit shank | Hole range | Connection thread | |
1011mm | 43.2kgs | 99mm | HD40 | 110-135MM | API 2 3/8" Reg | |
Working pressure | Impact rate at 1.7Mpa | Recommended rotation speed | Air consumption | |||
1.0 Mpa | 1.8 Mpa | 2.4 Mpa | ||||
1.0-3.0Mpa | 30Hz | 22-35r/min | 6m3/min | 10m3/min | 15m3/min |