KG420B/KG420BH Surface DTH Drilling Rig
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The surface DTH drilling rig is an upgraded model developed to meet diesel engine emission standards. It is equipped with a Yuchai-brand non-road diesel four-cylinder engine, ensuring compliance with emission standards.
Features- Adopts a reinforced folded crawler frame and heavy-duty undercarriage, with a track leveling function and a plunger-type feed motor to increase working pressure, rotary torque, and rotational speed
- The lifting cylinder and chain are enlarged to improve lifting capacity and operational reliability
- The housing is made of reinforced folded structural plates to enhance strength and rigidity
- Equipped with lifting rings for easier loading, unloading, and hoisting
| Model No. | ||
| Dimensions | 5500×2250×2350 mm | 5600×2450×2350 mm |
| Drilling hardness | f=6-20 | |
| Drilling diameter | Ø90-130 mm | |
| Economical drilling depth | 25m | |
| Rotary speed | 0-140 rpm | |
| Max. rotary torque | 2000 N·m | |
| Lifting force | 25 KN | |
| Feed method | Hydraulic cylinder leaf chain | |
| Feed stroke | 3780 mm | |
| Travelling speed | 0-2.5 km/h | |
| Climbing capacity | ≤30° | |
| Ground clearance | 280 mm | |
| Tilt angle of beam | Down 135°, up 50°, total 185° | |
| Swing angle of carriage | Left 100°, right 45°, total 145° | |
| Pitch angle of drill boom | Down 50°, up 25°, total 75° | |
| Swing angle of drill boom | Left 44°, right 45°, total 89° | |
| Track leveling angle | ±10° | |
| Compensation stroke | 900 mm | |
| Engine | Yuchai YC4DK80-T302 (58 kW/2200 rpm) | |
| DTH hammer | 3", 4" | |
| Drilling rod | Ø64×3 m/Ø76×3 m | |
| Air consumption | 10-17m3/min | |
| Max. horizontal drilling height | 2750 mm | |
| Min. horizontal drilling height | 350 mm | |
| Dust collector | Standard configuration: QZA-90 (8 filter elements) | |
| Alternative configuration: QZA-120 (12 filter elements) | ||
Note: When the drilling diameter exceeds Ø90 mm, the dust collector must be upgraded accordingly.