KAT DRILLING
1 / 5
High air pressure DTH hammer is a kind of down-the-hole hammer. It is mainly used for percussive drilling in rock formation. It is characterized by high air pressure and high efficiency. It is suitable for use in areas with abundant air supply. The working principle of the high air pressure DTH hammer is to use compressed air to drive the piston to reciprocate in the cylinder, thereby generating impact energy to impact the drill bit and drill into the rock formation.
Applications: High pressure drilling rigs, Water well drilling, Bench drilling, Civil Engineering, Mining and Mineral Exploration, Oil well drilling.
| Type | Model | Length (mm) | Weight (kg) | External Dia.(mm) | Hole Range (mm) |
|---|---|---|---|---|---|
| 3.5 inch | DHD3.5 | 930 | 25 | Φ82 | Φ90-110 |
| 4 inch | Mission40 | 1005 | 40 | Φ99 | Φ110-135 |
| 5 inch | Mission50 | 1110 | 68.5 | Φ125 | Φ135-155 |
| 6 inch | Mission60 | 1161 | 90 | Φ146 | Φ155-190 |
| 8 inch | Mission80 | 1338 | 176 | Φ180 | Φ195-254 |
Specific Parameters for Mission 50 DTH Hammers:
| Hammer Length without bit | 1112 (mm) |
| Top sub thread | API 2 3/8"REG PIN |
| Outside diameter | 126 (mm) |
| Weight | 70.5 (KG) |
| Bit diameter | 136-155 (mm) |
| Working Pressure | 1.0-2.5 Mpa |
| Air consumption | 7-13 (M3/min) |
| Bit shank | Mission50 |
