1. D Miningwell DTH hammer is a valve-type central exhaust impactor, which has a good effect of discharging rock powder, reduces the repeated crushing of rock slag, reduces the wear of the drill bit, and improves the drilling efficiency;<br/>
2. The internal structure size of the impactor is designed with advanced rock drilling theory, so that the impactor can obtain ideal energy transfer, large single impact power, faster rock drilling speed and lower air consumption;<br/>
3. Using high-quality raw materials and advanced processing technology, the performance is more stable and the service life is longer.<br/>
4. Easy disassembly and assembly, low failure and convenient maintenance.<br/>
Model | DHD340 | DHD350 | DHD360 | DHD380 |
Length(Less bit) | 1032mm | 1209mm | 1063mm | 1492mm |
Weight | 43kg | 78.5kg | 100.5kg | 190kg |
Outer diameter | φ99mm | φ125mm | φ142mm | φ180mm |
Connection thread | API 2 3/8″REG | API 2 3/8″REG | API 3 1/2″REG | API 4 1/2″REG |
Hole range | φ110-φ135mm | φ135-φ155mm | φ150-φ190mm | φ195-φ254mm |
Work pressure | 1.0-2.2Mpa | 1.0-2.5Mpa | 1.0-2.5Mpa | 1.5-3.3Mpa |