8” HD85A DTH Hammer is a kind of borehole drilling DTH hammer that is very common in the market, the compressed air that goes through the DTH hammer makes it a powerful drilling tool for drilling rocky areas. 8” HD85A DTH hammer (down-the-hole hammer) is a tool that can be installed to the end of a drill pipe and drilling a water well borehole. It’s a kind of small jackhammer that is used to break the hard rock into small pieces. A DTH hammer can solve the problem of drilling through hard rock layers that lies in a water well borehole.
Model: HD85A 8” inches
- Length: 1330mm
- Weight: 174.00KG
- Diameter: φ180/φ185mm
- Drilling hole range: φ194-φ254mm
- API: API4 1/2″ Reg
- Compressed air pressure: 1.5-3.0Mpa
- Air consumption: 1.0Mpa:12m³/min, 1.8Mpa:22m³/min, 2.4Mpa:19m³/min
- Rotate speed: 15-25r/min
8’’ HD85A DTH Hammer is suitable for the diameter of drilling bits:φ194mm-φ254mm
8’’ HD85A DTH Hammer attaches tightly to the end of a drill pipe by screws, it’s air-powered with a high cyclic rate; Because the DTH hammer is pneumatically powered, it has air exhaust holes that blow the stone chips and dust out from the borehole. Small portable drill rigs equipped with a DTH hammer can drill through rocks as quickly as large truck drill rigs do.