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421TA Φ90-127mm Integrated Dth Surface Blasting Hole Drill Rig Rock Drilling Machine

This model is equipped with a larger two-stage screw air end, designed to meet the requirements for an optimal hole diameter range of 90–115 mm. When drilling 90 mm diameter holes, the engine operates at 1450 RPM—this optimal economic speed ensures extremely low fuel consumption. Moreover, it is a lightweight and flexible model with excellent off-road capability, allowing it to adapt to operations in narrow spaces and rough terrain. It can also be loaded into a 20-foot container, effectively reducing transportation costs.

Optimal Hole Range: φ90-127

Hole depth.Max: 21m

Weight 7,560 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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