Kaishan Surface Drilling Rigs/Mid-size Crawler DTH Drill Rig Series
KG420BH
The KG420BH surface DTH drilling rig is a small-to-medium split-type drill rig of the Kaishan KG series with dust collector, with a drilling diameter of Φ90-130mm, economical drilling depth of 25m, powered by a Yuchai YC4DK80-T302 engine (58kW/2200r/min), with a total weight of 4350kg.
Hole diameter
Φ90-130 mm
Drilling depth
25 m
Weight
4350 kg
Overview
The KG420BH surface DTH drilling rig is a small-to-medium split-type drill rig of the Kaishan KG series with dust collector, with a drilling diameter of Φ90-130mm, economical drilling depth of 25m, powered by a Yuchai YC4DK80-T302 engine (58kW/2200r/min), with a total weight of 4350kg.
Key highlights
- ✓Drilling diameter Φ90-130mm, economical drilling depth 25m, horizontal hole coverage from 350mm to 2750mm
- ✓Standard QZA-90 dust collector (8 filter cartridges), optional QZA-120 (12 filter cartridges) for cleaner and more reliable operation
- ✓Yuchai YC4DK80-T302 engine (58kW/2200r/min), compliant with non-road emission requirements
- ✓Max rotary torque 2000N·m, rotation speed 0-140rpm, lifting force 25kN
- ✓3"/4" DTH hammers, compatible with Φ64 or Φ76×3m drill rods, air consumption 10-17m³/min
Applications: Open-pit mining sites around urban areas or with strict environmental requirements, as well as blast hole drilling in small and medium mines and quarries.
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) | Φ90-130 |
| Drilling depth (m) | 25 |
| Feed length (mm) | 3780 |
| Max horizontal hole height (mm) | 2750 |
| Min horizontal hole height (mm) | 350 |
Dimensions & weight
| Weight (kg) | 4350 |
| Dimensions (mm) | 5600×2450×2350 |
Drive & handling
| Rotary speed | 0-140 rpm |
| Max rotary torque | 2000 N·m |
| Lifting force | 25 kN |
| Track leveling angle | ±10° |
| Mast compensation length (mm) | 900 |
Tooling & air
| DTH hammer | 3", 4" |
| Air consumption | 10-17 m³/min |
Performance & mobility
| Travel speed | 0-2.5 km/h |
| Gradeability | ≤30° |
| Ground clearance (mm) | 280 |
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 KG420BH?
Open-pit mining, Bench blasting, Production drilling.
Which air compressor pairs with the KG420BH?
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.