China Hn125A Down The Hole DTH Hammer, Find details about China Hn125A DTH Hammer, DTH Drilling Hammer from Hn125A Down The Hole DTH Hammer
shank | NUMA125 |
Length(less bit) | 1960mm |
External diameter | 275mm |
Top sub thread | API 6 5/8"REG API 7 5/8"REG |
Weight(less bit) | 470kg |
Hole range | 305mm-445mm |
Working pressure | 1.0-3.0Mpa |
Impact rate at 1.4Mpa | 20Hz |
Recommended rotation speed | 15-25r/min |
1.2Mpa | 28m³/min |
Air consumption 1.8Mpa | 50m³/min |
2.4Mpa | 71m³/min |