Kaishan Underground Drilling Rigs/Underground Tunnelling (Development) Drilling Rigs
KJ212
KJ212 is a hydraulic tunnelling drilling rig designed for low tunnels. It can drill vertical, inclined and horizontal blast holes, passes roadways with a section of 2.5 m x 1.5 m, and is suitable for tunnelling work in sections from 3.5 m x 1.8 m to 5 m x 4.8 m.
Drilling capability — Tunnel passage section
2.5 m × 1.5 m
Drilling capability — Tunnel working range
3.5 m × 1.8 m to 5 m × 4.8 m
Dimensions & weight — Overall dimensions (L × W × H)
11160 × 2000 × (1465/1985) mm
Dimensions & weight — Weight
approx. 11000 kg
Overview
KJ212 is a hydraulic tunnelling drilling rig designed for low tunnels. It can drill vertical, inclined and horizontal blast holes, passes roadways with a section of 2.5 m x 1.5 m, and is suitable for tunnelling work in sections from 3.5 m x 1.8 m to 5 m x 4.8 m.
Key highlights
- ✓The firm flexible boom is capable of optical coverage of the section; 360° rotation and a self-levelling beam make drill-hole positioning easy.
- ✓The boom can also be used for drilling lateral cross-cut holes and rock-bolting holes.
- ✓The drill rig provides a good view for the operator.
- ✓Balanced layout and the articulated chassis of four-wheel drive 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 for safer operation.
- ✓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: Low tunnels whose roadway section allows passage through 2.5 m x 1.5 m. · Hard-rock tunnelling sections from 3.5 m x 1.8 m to 5 m x 4.8 m. · Drilling of vertical, inclined and horizontal blast holes, lateral cross-cut holes and rock-bolting holes.
Specifications
Request the current specification sheet for this model using the button above.
Drilling capability
| Tunnel passage section | 2.5 m × 1.5 m |
| Tunnel working range | 3.5 m × 1.8 m to 5 m × 4.8 m |
Dimensions & weight
| Overall dimensions (L × W × H) | 11160 × 2000 × (1465/1985) mm |
| Weight | approx. 11000 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 0.7/8-5.5(B) |
| Capacity of air compressor | 0.7 m³/min |
| Pressure | 6-8 bar |
| Device of shank lubrication | Electronic pulse lubrication pump |
| Oil consumption of lubrication | 180-250 g/h |
| Air consumption of lubrication | 0.3 m³/min |
| Water pump (printed power / capacity options) | Power: 1.5 / 4 kW; Capacity: 3 / 5.8 m³/h |
Drive & handling
| Diesel engine | Cummins B3.9CS4-80C, 59 kW / 2500 rpm |
| Drive system | Closed hydraulic system for four-wheel driving |
| Swing angle of rear axle | ±6° |
| Steering mechanism | Articulated steering, ±35° |
| Parking braking | Multidisc brake |
| Emergency braking | Multidisc brake |
| Fuel tank | 30 L |
Drilling capability
| Rock drill (option 1) | HC50; impact power 13 kW; impact frequency 62 Hz; hole diameter Φ32-76 mm; rod size R38 |
| Rock drill (option 2) | 18U; impact power 18 kW; impact frequency 57 Hz; hole diameter Φ42-89 mm; rod size T38 |
| Beam rotation | 360° |
| Feed extension | 1600 mm |
| Model of drill boom | K 26 |
| Form of drill boom | Self-leveling |
| Boom extension | 1200 mm |
Engine & drive
| Motor (option 1) | 45 kW |
| Motor (option 2) | 55 kW |
| Impact / feed / positioning pump | Axial variable displacement piston pump |
| Rotation pump | Gear pump |
| Filter fineness | 10 μ |
| Hydraulic oil tank | 240 L |
| Hydraulic cooler | Water cooler |
| Working voltage | 380 V |
| Frequency | 50 Hz |
| Starting method | Star-triangle |
| Cable specifications | 3×35+3G6 / 3×50+3G10 |
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 KJ212?
Underground mining, Development drilling, Tunnel face drilling.
Which air compressor pairs with the KJ212?
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.