Kaishan Underground Drilling Rigs/Underground Tunnelling (Development) Drilling Rigs
KJ422
KJ422 hydraulic tunnelling drilling rig is suitable for the drilling of tunnels whose section falls in the range of 16-95 m². It drills blast holes and rock-bolting holes in vertical, inclined and horizontal directions.
Dimensions & weight — Overall dimensions (L × W × H)
15000 × 2550 × (2400/3100) mm
Dimensions & weight — Weight
Appr. 28000 (excluding the workbench) kg
Dimensions & weight — Tramming speed on flat ground
10 km/h
Dimensions & weight — Maximum climbing capacity
25% (14°)
Overview
KJ422 hydraulic tunnelling drilling rig is suitable for the drilling of tunnels whose section falls in the range of 16-95 m². It drills blast holes and rock-bolting holes in vertical, inclined and horizontal directions.
Key highlights
- ✓The drilling rig is fitted with a flexible boom in two symmetric rectangular coordinates without any operation blind spot; 360° rotation and a self-levelling beam make drill-hole positioning easy, and it can also be used for lateral cross-cut holes and rock bolting.
- ✓The drill rig provides a good view for the operator; balanced layout and the articulated chassis of four-wheel drive of the machine ensure flexible, fast and safe driving in the narrow tunnel.
- ✓The stepped piston is used for the high-frequency impact rock drill, which improves impact-wave transmission, raises drilling speed and reduces drill-tool consumption.
- ✓Considerable space and automatic functions let the driver concentrate on drilling in a safe, fast and accurate manner.
- ✓All relevant parts are kept in good protection and are easy to maintain.
Applications: Tunnels with sections of 16-95 m². · Drilling of blast holes and rock-bolting holes in vertical, inclined and horizontal directions. · Lateral cross-cut hole drilling.
Specifications
Request the current specification sheet for this model using the button above.
Dimensions & weight
| Overall dimensions (L × W × H) | 15000 × 2550 × (2400/3100) mm |
| Weight | Appr. 28000 (excluding the workbench) kg |
| Tramming speed on flat ground | 10 km/h |
| Maximum climbing capacity | 25% (14°) |
Other specifications
| Noise level | < 100 dB(A) |
| Lifting safety roof | FOPS & ROPS certified |
Tooling & air
| Air compressor | DLGF 1.5/8-11(B) |
| Capacity of air compressor | 1.55 m³/min |
| Pressure | 8 bar |
| Device of shank lubrication | Electronic pulse lubrication pump |
| Oil consumption of lubrication | 2×180-250 g/h |
| Air consumption of lubrication | 2×0.3 m³/min |
| Water pump (printed power / capacity options) | Power: 7.5 kW; Capacity: 10 m³/h |
Drive & handling
| Diesel engine | Cummins B3.9CS4-130C, 96 kW / 2500 rpm |
| Drive system | Hydraulic torque converter + gearbox |
| Travelling braking | Wet bridge brake |
| Parking braking | Mechanical brake |
| Fuel tank | 120 L |
Drilling capability
| Rock drill | 2× HC95LMH / 22U; rod size R38 / T38; impact power 21 kW / 22 kW; impact frequency 62 Hz / 53 Hz; hole diameter Φ42-102 mm |
| Beam rotation | 360° |
| Feed extension | 1600 mm |
| Model of drill boom | K 50 |
| Form of drill boom | Self-leveling |
| Boom extension | 2000 mm |
Engine & drive
| Motor | 2×75 kW |
| Impact / feed / positioning pump | Axial variable displacement piston pump |
| Rotation pump | Gear pump |
| Filter fineness | 10 μ |
| Hydraulic oil tank | 400 L |
| Hydraulic cooler | Water cooler |
| Working voltage | 380 V |
| Frequency | 50 Hz |
| Starting method | Star-triangle |
| Cable specifications | 3×120+3G25 |
Other specifications
| Tunnel working range | 16-95 m² |
Applications
- Underground mining
- Development drilling
- Tunnel face drilling
Recommended packages
Air compressor match
Underground jumbos run on the mine's electric/hydraulic supply — confirm voltage and water/air services at the heading. Where air is needed, match a KSDY electric compressor to the site power.
DTH hammer & bits
Kaishan underground rigs use premium hydraulic rock drills (Montabert HC50/HC95/HC109) for face and production drilling; the KSQ31 DTH model runs K-class hammers. Confirm rock drill model against your tunnel section.
Need a complete drilling package? Request a rig + compressor + tooling quote →
Frequently asked questions
What applications suit the KJ422?
Underground mining, Development drilling, Tunnel face drilling.
Which air compressor pairs with the KJ422?
Underground jumbos run on the mine's electric/hydraulic supply — confirm voltage and water/air services at the heading. Where air is needed, match a KSDY electric compressor to the site power.
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.