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High air pressure DTH hammer is a specialized down-the-hole tool primarily used for percussive drilling in rock formations. Characterized by high air pressure and exceptional efficiency, it is ideal for areas with an abundant air supply. The hammer operates by using compressed air to drive a reciprocating piston, generating impact energy that penetrates the rock through the drill bit.
| Type | Model | Length (mm) | Weight (kg) | External Dia. (mm) | Hole Range (mm) |
|---|---|---|---|---|---|
| 3.5 inch | DHD3.5 | 930 | 25 | Φ82 | Φ90-110 |
| 4 inch | DHD340 | 1030 | 39 | Φ99 | Φ110-135 |
| SD4 | 1084 | 40.5 | Φ99 | ||
| QL4 | 1097 | 41 | Φ99 | ||
| Mission40 | 1005 | 40 | Φ99 | ||
| 5 inch | DHD350 | 1214 | 76.5 | Φ125 | Φ135-155 |
| SD5 | 1175 | 72.5 | Φ125 | ||
| QL5 | 1147 | 73 | Φ125 | ||
| Mission50 | 1110 | 68.5 | Φ125 |
| Feature | Specification |
| Hammer Length without bit | 1102 mm |
| Top sub thread | API 2 3/8" REG PIN |
| Outside diameter | 126 mm |
| Weight | 68.5 KG |
| Bit diameter | 136-155 mm |
| Working Pressure | 10-25 Bar |
| Air consumption | 7-13 M³/min |
| Bit shank | QL50A |






Orders are typically processed with a 25-day production lead time. For standard stock sizes, delivery can be as fast as 2-3 days. Sample orders are recommended via courier (DHL/UPS/TNT/FEDEX), while bulk orders are efficiently handled via air or sea freight.