Changsha Sollroc Engineering Equipments Co., Ltd
FOCUS IN MANUFACTURING OF HIGH QUALITY DTH AND RC DRILLING TOOLS.
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6''-8'' High Air Pressure DTH Hammer with Foot Valve Type for Foundation Work
Product description:
Down-the-hole drilling (DTH) essentially involves a drilling hammer at the bottom of a drill string. It relies on three elements for drilling holes: bit loading (weight), rotation and air. These active elements combine to be efficient at crushing rock
Product Advantages:
1.The most suitable hole diameter is 100–254 mm, in special applications can be up to 2M And the minimum can be around 50 mm as well.
2.Theoretically drilling depth is limited by back pressure only (can be up to several kilometers).
3.Adapt to hard rock and rock formation conditions (compared to top hammer).
4.Mainly use pressurized air for slag flushing, and sometimes air foam for special application.
DTH Hammer specification:
Hammers | Bit Shank | Connection Thread | Suitable bit | Working pressure | Air consumption | |
| 6" hammers | DHD360 COP64 QL60 SD6 M60 | API 3 1/2"Reg | ¢152-¢203mm | 1.0-2.5Mpa | 1.0Mpa | 10m3/min |
| 1.8Mpa | 20m3/min | |||||
| 2.4Mpa | 28.5m3/min | |||||
| 8" hammers | DHD380 COP84 QL80 SD8 | API 4 1/2"Reg | ¢200-¢279mm | 1.0-2.5Mpa | 1.0Mpa | 15m3/min |
| 1.8Mpa | 26m3/min | |||||
| 2.4Mpa | 34m3/min | |||||
| Hammer inch | Bits diameter | Shank | |
| Metric | Inch | ||
| 6" | 152mm-254mm | 4 1/8"-10" | COP64/DHD360/SD6 M60/QL60/Bulroc BR6 |
| 8" | 203mm-330mm | 8"-13" | COP84/DHD380/SD8 QL80/M80 |
Detailed photos:
Application: