KG420S/KG420SH Down the hole Drill Rig for Open Use


The KG420S/KG420SH down the hole drill rig for open use is an improved device in compliance with national regulations on diesel-engine emissions.The drill rig is equipped with the two independent systems,namely diesel engine and motor,capable of separate operations.

Product Applications Product Features Technical Parameters Related Products


The KG420SH down the hole drill rig for open use is equipped with a dust collector,thus making operation more environment-friendly and reliable.

The folding frame track,four-wheel drive and the tramming motor of plunger piston improve the working pressure and climbing capacity.
The expanded pitch and lifting-arm hydraulic cylinder enable it to meet the requirements on limiting position.The double rotation motor increases the rotary torque and revolving speed, and the lifting hydraulic cylinder and chain are expanded to promote the lifting force and reliability.The thickened profile folder is used for the housing,thus improving its level of intensity and rigidity;and the additional ring make shandling and lifting convenient.

Detail features

Technical Parameters

Model of drill rig KG420S KG420SH
Weight of complete machine 5800KG 6100KG
Outer dimensions 6400×2250×2700mm 6400×2420×2700mm
Drilling hardness f=6-20
Drilling diameter Φ90-152mm
Depth of economical drilling 25m
Rotary speed 0-90rpm
Rotary torque 5000N·m
Lifting force 40KN
Method of Feed Oil cylinder-leaf chain
Feed stroke 3175mm
Travelling speed 0-2.5km/h
Climbing capacity ≤30°
Ground clearance 515mm
Tilt angle of Beam Down: 110°, up: 35°, total: 145°
Swing angle of boom Left: 91°, right: 5°, total: 96°
Pitch angle of drill boom Down: 55°, up: 15°, total: 70°
Swing angle of drill boom Left: 32°, right: 32°, total: 64°
Compensation length of beam 1220mm
Supporting power Yuchai YCDK80-T302 (58KW/2200r/min)
DTH hammer K40
Drilling rod Φ76×2m+Φ76×3m
Air consumption 13-20m3/min
Maximum height of horizontal hole 2850mm
Minimum height of horizontal hole 350mm
Recommended Air Compressors
Diesel engine portable screw air compressor: Kaishan LGCY-13/13
Kaishan KSCY-580/13
Kaishan LGCY-18/17
Note: Air compressor selection subject to hole dimameter and air hose length
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