Kaishan Underground Drilling Rigs/Underground Tunnelling (Development) Drilling Rigs
KJ212
KJ212 Hydraulic Tunnelling Drilling Rig is specially designed for low tunnels, passing a section of 2.5m×1.5m, qualified for tunneling in cross-sections of 3.5m×1.8m to 5m×4.8m, with a total weight of about 11,000kg. It is equipped with a K26 boom (1,200mm extension) and HC50/18U rock drills (13-18KW impact power), drilling holes of Φ32-89mm, with 45-55kW electric motors.
Hole diameter
Φ32-76 / Φ42-89 mm
Overview
KJ212 Hydraulic Tunnelling Drilling Rig is specially designed for low tunnels, passing a section of 2.5m×1.5m, qualified for tunneling in cross-sections of 3.5m×1.8m to 5m×4.8m, with a total weight of about 11,000kg. It is equipped with a K26 boom (1,200mm extension) and HC50/18U rock drills (13-18KW impact power), drilling holes of Φ32-89mm, with 45-55kW electric motors.
Key highlights
- ✓Low-tunnel adaptability: passes a section of only 2.5m×1.5m, machine height 1,465/1,985mm, qualified for 3.5m×1.8m to 5m×4.8m cross-sections
- ✓Flexible boom: K26 boom with 1,200mm extension, 360° beam rotation and self-leveling for rapid positioning; also usable for lateral cross-cut and rock bolting
- ✓High-frequency rock drill: HC50/18U, 13-18KW impact power, stepped piston optimizing impact wave transmission for higher drilling speed and lower tool consumption
- ✓Chassis mobility: four-wheel-drive articulated chassis (±35° steering), travel speed 10km/h, max climbing capacity 25% (14°)
- ✓Safety and protection: FOPS & ROPS certified canopy, 10μ filtration hydraulic system (axial variable displacement piston pump + gear pump), 380V 50Hz power supply
Applications: Drifting in low-tunnel underground mines, tunnel excavation, lateral cross-cut and rock bolting operations.
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
| Hole diameter (mm) | Φ32-76 / Φ42-89 |
| Tunnel working range | 3.5×1.8 - 5×4.8 m |
Engine & drive
| Chassis engine | Cummins B3.9CS4-80C 59KW/2500rpm |
| Impact power | 13KW / 18KW |
| Frequency | 62Hz / 57Hz |
| Motor power | 45kW / 55kW |
| Voltage | 380V 50Hz |
Drive & handling
| Feed beam tilt | 360° |
| Mast compensation length (mm) | 1600 |
| Boom model | K26 |
| Boom extension | 1200mm |
Mud & hydraulic
| Fuel tank (L) | 30 |
| Filtration precision | 10μ |
| Hydraulic oil (L) | 240 |
Tooling & air
| Rock drill | HC50 / 18U |
Performance & mobility
| Travel speed | 10km/h |
| Gradeability | 25%(14°) |
Other specifications
| Noise | <100dB(A) |
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.