Kaishan Surface Drilling Rigs/Mid-size Crawler DTH Drill Rig Series
KG420S
The KG420S/KG420SH surface DTH drilling rig is an improved device in compliance with national regulations on diesel-engine emissions. The drill rig is equipped with two independent systems, namely a diesel engine and an electric motor, capable of separate operations. The folding frame track, four-wheel drive and the plunger-piston tramming motor improve working pressure and climbing capacity. The expanded pitch and lifting-arm hydraulic cylinder enable it to meet limiting-position requirements. A double rotation motor increases rotary torque and revolving speed; the lifting hydraulic cylinder and chain are expanded to promote lifting force and reliability. The thickened profile folder is used for the housing, improving intensity and rigidity; the additional ring makes handling and lifting convenient.
Model of drill rig
KG420S
Dimensions & weight — Weight of complete machine
5800 kg
Dimensions & weight — Overall dimensions (L × W × H)
6400 x 2250 x 2700 mm
Drilling capability — Drilling hardness
f = 6-20
Overview
The KG420S/KG420SH surface DTH drilling rig is an improved device in compliance with national regulations on diesel-engine emissions. The drill rig is equipped with two independent systems, namely a diesel engine and an electric motor, capable of separate operations. The folding frame track, four-wheel drive and the plunger-piston tramming motor improve working pressure and climbing capacity. The expanded pitch and lifting-arm hydraulic cylinder enable it to meet limiting-position requirements. A double rotation motor increases rotary torque and revolving speed; the lifting hydraulic cylinder and chain are expanded to promote lifting force and reliability. The thickened profile folder is used for the housing, improving intensity and rigidity; the additional ring makes handling and lifting convenient.
Key highlights
- ✓Two independent power systems, diesel engine and electric motor, capable of separate operation.
- ✓Folding frame track with four-wheel drive and a plunger-piston tramming motor raise working pressure and climbing capacity.
- ✓Expanded pitch and lifting-arm hydraulic cylinder meet the requirements of limiting positions.
- ✓Double rotation motor increases rotary torque and revolving speed.
- ✓Expanded lifting hydraulic cylinder and chain increase lifting force and reliability.
- ✓Thickened profile folded housing improves strength and rigidity; the additional lifting ring makes handling and lifting convenient.
Applications: Surface down-the-hole (DTH) drilling of holes from Φ90 mm to 152 mm. · Rock of hardness f = 6-20, at an economical drilling depth of 25 m. · Sites that pair the rig with a portable air compressor: selection depends on hole diameter and air-hose length, and the catalog recommends KSCY570/12-550/15, LGCY17/18-18/15T and KSCY650/20-700/17T. · Sites where an electric supply is available, so the rig can run on the diesel and motor systems separately.
Specifications
Request the current specification sheet for this model using the button above.
Other specifications
| Model of drill rig | KG420S |
Dimensions & weight
| Weight of complete machine | 5800 kg |
| Overall dimensions (L × W × H) | 6400 x 2250 x 2700 mm |
Drilling capability
| Drilling hardness | f = 6-20 |
| Drilling diameter | Φ90-152 mm |
| Depth of economical drilling | 25 m |
| Rotary speed | 0-90 rpm |
| Rotary torque (max) | 5000 N·m |
| Lifting force | 40 kN |
| Method of feed | Cylinder and roller chain |
| Feed stroke | 3175 mm |
| Travelling speed | 0-2.5 km/h |
| Climbing capacity | ≤30° |
| Ground clearance | 290 mm |
| Tilt angle of beam | down 110°, up 35°, total 145° |
| Swing angle of beam | 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 | 970 mm |
Engine & drive
| Supporting power (diesel engine) | Yuchai YC4DK80-T302, 58 kW / 2200 r/min |
| Supporting power (electric motor) | YE3-250M-4, 55 kW / 1460 r/min |
| DTH hammer | 4 in |
| Drilling rod | Φ76 x 2 m + Φ76 x 3 m |
| Air consumption | 13-20 m³/min |
| Maximum height of horizontal hole | 2850 mm |
| Minimum height of horizontal hole | 350 mm |
| Dust collector (standard configuration) | QZA-120, 12 filter elements |
| Dust collector (alternative configuration) | QZA-140, 16 filter elements |
Applications
- Open-pit mining
- Bench blasting
- Production drilling
Recommended packages
Air compressor match
This rig draws 10-17 m³/min at the hammer (3" or 4"). The standard pairing is a KSCY mobile compressor in the 18-21 m³/min class — e.g. KSCY-310/22 (21 m³/min @ 2.2 MPa) or KSCY-650/20-700/17T (18-19 m³/min dual-mode).
DTH hammer & bits
3" and 4" DTH hammers cover the Φ90-130 mm range — K3/K30C class for 90-105 mm holes, moving up a size for 130 mm holes. Matching button bits order as a set.
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Frequently asked questions
What applications suit the KG420S?
Open-pit mining, Bench blasting, Production drilling.
Which air compressor pairs with the KG420S?
This rig draws 10-17 m³/min at the hammer (3" or 4"). The standard pairing is a KSCY mobile compressor in the 18-21 m³/min class — e.g. KSCY-310/22 (21 m³/min @ 2.2 MPa) or KSCY-650/20-700/17T (18-19 m³/min dual-mode).
Can the equipment be configured to my project?
Send your project details through the inquiry form and we will confirm the available configuration for the selected model before quotation.