Kaishan Surface Drilling Rigs/Mid-size Crawler DTH Drill Rig Series
KG420S
KG420S is a Surface DTH Drilling Rig. Published specifications include air consumption 13-20 m³/min; drive power Yuchai YC4DK80-T302 (58 kW/2200 r/min) + electric motor YE3-250M-4 (55 kW/1460 r/min); economic drilling depth 25 m; hole diameter Φ90-152 mm; weight 5800 kg. Use the model specification table to compare the selected equipment with project conditions and confirm the final configuration before order.
Hole diameter
Φ90-152 mm
Drilling depth
25 m
Weight
5800 kg
Overview
KG420S is a Surface DTH Drilling Rig. Published specifications include air consumption 13-20 m³/min; drive power Yuchai YC4DK80-T302 (58 kW/2200 r/min) + electric motor YE3-250M-4 (55 kW/1460 r/min); economic drilling depth 25 m; hole diameter Φ90-152 mm; weight 5800 kg. Use the model specification table to compare the selected equipment with project conditions and confirm the final configuration before order.
Genuine Kaishan equipment supplied through our authorized distribution channel, with configuration, export coordination, spare-parts and after-sales support.
Specifications
Request the current specification sheet for this model using the button above.
Drilling capability
| Rock hardness | f=6-20 |
| Hole diameter (mm) | Φ90-152 |
| Drilling depth (m) | 25 |
| Feed length (mm) | 3175 |
| Max horizontal hole height (mm) | 2850 |
| Min horizontal hole height (mm) | 350 |
Dimensions & weight
| Weight (kg) | 5800 |
| Dimensions (mm) | 6400×2250×2700 |
Drive & handling
| Rotary speed | 0-90 rpm |
| Max rotary torque | 5000 N·m |
| Lifting force | 40 kN |
| Mast compensation length (mm) | 970 |
Tooling & air
| DTH hammer | 4" |
| Drill rod | Φ76×2 m + Φ76×3 m |
| Air consumption | 13-20 m³/min |
Performance & mobility
| Travel speed | 0-2.5 km/h |
| Gradeability | ≤30° |
| Ground clearance (mm) | 290 |
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.
Need a complete drilling package? Request a rig + compressor + tooling quote →
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.