DTH Hammers
- Hammer size: 2"-10"
- Compatible bit diameter: 60-400 mm
- Thread connection: API REG
- Overall length: 863-1522mm
- Weight: 22-295kg
Request a Quote
DTH Hammer without Tail Tube Design
- No nylon tail tube required, eliminating issues caused by tail tube breakage, wear, or thermal expansion and contraction
- Lower energy consumption and higher impact frequency, achieving 15-30% faster penetration rates compared with similar tail-tube designs
- Simplified internal structure with fewer components, enabling easier maintenance and lower service costs
- All internal components are surface-hardened to improve wear resistance and extend service life
- The top sub and chuck are connected to the outer cylinder via threaded connections, allowing convenient disassembly and maintenance
Technical Specifications
| Item | |
|
|
|
|
|
|
| Length without bit | 863mm | 967mm | 1070mm | 1164mm | 1318mm | 1366mm | 1522mm |
| Weight without bit | 22.0kg | 38.4kg | 68.4kg | 101.5kg | 153kg | 184.3kg | 295.1kg |
| Hammer OD | 80mm | 99mm | 126mm | 146mm | 170mm | 185mm | 220mm |
| Bit shank | DHD3.5 | DHD340 | DHD350 | DHD360 | 7H | DHD380 | Numa10 |
| Mission40 | Mission50 | Mission60 | Mission80 | SD10 | |||
| COP44 | QL50 | QL60 | QL80 | TD90 | |||
| Recommended hole diameter | Ø90mm-Ø105mm | Ø105mm-Ø130mm | Ø135mm-Ø165mm | Ø155mm-Ø203mm | Ø178mm-Ø216mm | Ø203mm-Ø254mm | Ø254mm-Ø311mm |
| Thread connection (top sub) | API2 3/8'' Reg | API2 3/8'' Reg | API2 3/8'' Reg | API3 1/2'' Reg | API4 1/2'' Reg | API4 1/2'' Reg | API5 1/2'' Reg |
| Max. working pressure | 2.0MPa | 2.5MPa | 2.8MPa | 3.0MPa | 3.0MPa | 3.0MPa | 3.5MPa |
| Impact frequency | 15bar, 30Hz | 18bar, 36Hz | 18bar, 35Hz | 18Bar- 32Hz | 18bar, 30Hz | 18bar, 26Hz | 18bar, 26Hz |
| Recommended rotation speed | 30-60r/min | 30-60r/min | 25-55r/min | 25-55r/min | 25-55r/min | 25-50r/min | 25-50r/min |
| Air consumption | 15bar, 7m³/min | 18bar, 11m³/min | 18bar, 16m³/min | 18bar, 20m³/min | 18bar, 23m³/min | 18Bar- 28m³/min | 18bar, 41m³/min |
DTH hammer with tail tube
- Valveless air distribution system to ensure consistent air flow and operational stability
- Simple and robust piston structure, offering high durability and reduced risk of component failure
- Optimized internal structure with fewer components and fully surface-hardened parts, contributing to extended service life and convenient maintenance
- The top sub and chuck are connected to the outer cylinder via threaded connections, allowing easy disassembly and servicing
Technical Specifications
| Item | |
|
|
|
|
|
| Length without bit | 863mm | 947mm | 1070mm | 1164mm | 1366mm | 1522mm |
| Weight without bit | 22.0kg | 37kg | 68.4kg | 99.6kg | 180.1kg | 295.1kg |
| Hammer OD | 80mm | 99mm | 126mm | 146mm | 185mm | 220mm |
| Bit shank | DHD3.5 | DHD340 | DHD350 | DHD360 | DHD380 | Numa10 |
| SD4 | SD5 | SD6 | SD8 | SD10 | ||
| QL40/QLX40 | QL50 | QL60 | QL80 | TD90 | ||
| Recommended hole diameter | Ø90mm-Ø105mm | Ø105mm-Ø130mm | Ø135mm-Ø165mm | Ø155mm-Ø203mm | Ø203mm-Ø254mm | Ø254mm-Ø311mm |
| Thread connection (top sub) | API2 3/8'' Reg | API2 3/8'' Reg | API2 3/8'' Reg | API3 1/2'' Reg | API4 1/2'' Reg | API5 1/2'' Reg |
| Max. working pressure | 2.0MPa | 2.5MPa | 2.8MPa | 3.0MPa | 3.0MPa | 3.5MPa |
| Impact frequency | 15bar, 29Hz | 18bar, 33Hz | 18bar, 32Hz | 18bar, 30Hz | 18bar, 24Hz | 18bar, 24Hz |
| Recommended rotation speed | 30-60r/min | 30-60r/min | 25-55r/min | 25-55r/min | 25-50r/min | 25-50r/min |
| Air consumption | 15bar, 7.5m³/min | 18bar, 12.1m³/min | 18bar, 17.6m³/min | 18bar, 22m³/min | 18Ba-30.8m³/min | 18bar, 45.1m³/min |
Typical Applications
Open-pit blasting, mining operations, tunneling projects, water well drilling, photovoltaic piling, foundation piling, slope stabilization, and other rock drilling and drilling applications.
Performance Highlights
The hammer delivers high impact energy with optimized air utilization, supporting efficient drilling performance across different operating conditions.
Example: Drilling performance of an 8" DTH hammer matched with a 203mm bit under varying drilling depths and compressor pressures.
Example: Drilling performance of an 8" DTH hammer matched with a 203mm bit under varying drilling depths and compressor pressures.
Key components, such as the piston, are manufactured from special high-nickel alloy steel and produced under strict manufacturing and quality control standards.