421H Φ90-127mm Surface Mine Infrastructure Construction Integrated Dth Surface Drill Rig
This model is equipped with a larger two-stage screw air end, which meets the requirements for an optimal hole diameter of 90–115 mm. When drilling 90 mm diameter holes, the engine runs at 1450 RPM—this optimal economic speed ensures extremely low fuel consumption. Additionally, it is a lightweight and flexible model with excellent off-road performance, enabling it to adapt to operations in narrow spaces and rough terrain. It can also be loaded into a 20-foot container, which helps reduce transportation costs.
Optimal Hole Range: φ90-127
Hole depth.Max: 21m
| Weight | 8,870 kg |
| Dimensions (LxWxH) | 7,480×2,300×2,750 mm |
| IChina IV engine(standard) | Yuchai/162 kW |
| Rotation torque(MAX) | 1,500 Nm |
| Drilling hole diameter | φ90-127 mm |
| DTH hammer(Standard) | 3.5”(inch) |
| Drilling rod(Standard) | φ60×3,000 mm |
| Diesel tank volume | 250 L |
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