1.The special internal structure of the DHD series dth hammers designed according to the latest rock drilling theory, which provides the maximum energy to the drill bit, fast drilling speed and low air consumption.DHD350 DTH Hammer Bit
2.The DHD series dth hammer adopts high-quality alloy steel materials and advanced processing technology, with stable performance and long service life.
3.The internal structure of the DHD hammer head is simple and reliable, easy to disassemble and assemble, low failure rate and easy maintenance.
COP54/ DHD350R Hammer Specification DHD350 DTH Hammer Bit
| Drilling Diameter(mm) | Hammer Length Without Bit(mm) | External Diameter(mm) | Weight Without Bit(kg) |
| φ135-φ155 | 1214 | 125 | 76.5 |
| Working Pressure(Mpa) | Air Consumption(m³/min) | ||
| 1.3-2.3 Mpa | 1.0Mpa: 9 m³/min | 1.8Mpa: 15 m³/min | 2.4Mpa: 23 m³/min |
| Impact rate at 17 bar | Recommended Rotation Speed | Connection Rod Thread | Bit Shank |
| 25HZ | 20-35 r/min. | API 2 3/8” Reg, API 3 1/2” Reg, API 2 7/8” Reg, | COP54/DHD350R |
