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Because of economy and powerful drilling capacity, the down the hole hammer has become an advanced drilling tool for the drilling and mining industries. These hammers and drill bits are designed to work in perfect unison, delivering high penetration rates, long service life, and low operational costs.
Delivers maximum energy to the drilling bit with high speed and low air consumption due to a specialized inner structure based on modern rock drilling theory.
Adaptation of high-quality alloy steel materials and advanced processing technology ensures smooth performance and extended service life.
Simple, reliable internal structure allows for easy assembly and disassembly, significantly reducing maintenance downtime.
| 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 | ||
| 6 inch | DHD360 | 1248 | 100 | Φ142 | Φ155-190 |
| SD6 | 1261 | 100 | Φ142 | ||
| QL6 | 1212 | 95 | Φ146 | ||
| Mission60 | 1161 | 90 | Φ146 |
| Item | Length (mm) | Outside Dia (mm) | Weight (KG) | Bit Dia (mm) | Pressure (Bar) | Bit Shank |
|---|---|---|---|---|---|---|
| CIR-50 | 628 | 44 | 5 | 50 | 4-10 | CIR50 |
| CIR-60 | 777 | 53 | 7.5 | 60 | 4-10 | CIR60 |
| CIR-65 | 745 | 61 | 13 | 65 | 4-10 | CIR65 |
| CIR-76 | 811 | 66 | 13.5 | 76 | 4-10 | CIR76 |