Kaishan Underground Drilling Rigs/Underground Rock Bolting Drilling Rigs
KM311
KM311 Hydraulic Rock Bolting Rig is specially designed for split-set rock bolt installation, passing a section of 2.5m×2.2m and qualified for anchoring in tunnels wider than 3m and higher than 3m, with a total weight of about 12,000kg. It is equipped with a K26F boom (1,200mm extension) and HC25/HC28 rock drills (8-10KW impact power), drilling holes of Φ32-51mm, with a 45kW electric motor.
Hole diameter
Φ32-51 mm
Overview
KM311 Hydraulic Rock Bolting Rig is specially designed for split-set rock bolt installation, passing a section of 2.5m×2.2m and qualified for anchoring in tunnels wider than 3m and higher than 3m, with a total weight of about 12,000kg. It is equipped with a K26F boom (1,200mm extension) and HC25/HC28 rock drills (8-10KW impact power), drilling holes of Φ32-51mm, with a 45kW electric motor.
Key highlights
- ✓Two-station beam: dual working stations with a magazine storing 10 rock bolt rods, optional protective netting module, capable of drilling, netting and bolt installation
- ✓High efficiency: HC25/HC28 high-frequency rock drills (8-10KW impact power, 55-65Hz/47-53Hz) with stepped piston optimizing impact wave transmission for higher drilling speed and lower tool consumption
- ✓High safety: operators protected under the canopy away from danger zones, FOPS & ROPS certified canopy
- ✓Passability: passes 2.5m×2.2m section, wet-axle four-wheel-drive system, travel speed 10km/h, max climbing capacity 25% (14°)
- ✓Power and hydraulics: 45kW electric motor, axial variable displacement piston pump + gear pump, 10μ filtration, 380V 50Hz power supply
Applications: Rock bolt support drilling, mesh hanging and rock bolt installation in underground mines.
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) | Φ32-51 |
| Tunnel working range | pass 2.5×2.2 m section (work 3+×3+ m) |
Engine & drive
| Chassis engine | Cummins B3.9CS4-80C 59KW/2500rpm |
| Impact power | 8KW (HC25) / 10KW (HC28) |
| Frequency | 55-65Hz / 47-53Hz |
| Motor power | 45kW |
| Voltage | 380V 50Hz |
Drive & handling
| Boom model | K26F |
| Boom extension | 1200mm |
| Feed beam tilt | 360° |
| Mast compensation length (mm) | 310 |
Mud & hydraulic
| Fuel tank (L) | 60 |
| Filtration precision | 10μ |
| Hydraulic oil (L) | 240 |
Tooling & air
| Rock drill | HC25 / HC28 |
Performance & mobility
| Travel speed | 10km/h |
| Gradeability | 25%(14°) |
Other specifications
| Noise | <100dB(A) |
Applications
- Underground mining
- Roof bolting
- Anchor support
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 KM311?
Underground mining, Roof bolting, Anchor support.
Which air compressor pairs with the KM311?
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.