The KJ215 Hydraulic Development Drill Rig is a compact underground drilling machine designed for narrow tunnels and mine development. Equipped with a powerful hydraulic rock drill, a 360° rotating feed beam, and a robust universal boom, it delivers fast, accurate, and efficient drilling in hard rock conditions. The four-wheel-drive articulated chassis ensures excellent maneuverability in confined spaces. Suitable for drilling vertical, horizontal, and inclined blast holes, as well as rock bolting applications, the KJ215 is widely used in underground mining and tunneling projects with cross-sections ranging from 5 m² to 25 m².
Quzhou Mazellion Heavy Industry Technology Co., Ltd. is a professional manufacturer of diesel screw air compressors and mining drilling equipment, serving global mining, quarry, water well drilling, and construction projects. We provide factory-direct supply, stable quality, and full OEM customization to help customers win local markets with better cost performance and reliability.
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Drilling Rig Specification Table
Dimensions and Weight
| Parameter | Specification |
| Length | 10220 mm |
| Width | 1400 mm |
| Height | 2000 / 2850 mm |
| Weight | Approx. 11000 kg |
| Tramming speed on flat ground | 10 km/h |
| Maximum climbing capacity | 25% (14°) |
Safety Protection
| Parameter | Specification |
| Noise level | < 100 dB(A) |
| Lifting safety roof | FOPS & ROPS certified |
Air & Water System
| Parameter | Specification |
| 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 |
| Air consumption of lubrication | 0.3 m³/min |
| Oil consumption of lubrication | 180-250 g/h |
| Power of water pump | 1.5 kW / 4 kW |
| Capacity of water pump | 3 m³/h / 5.8 m³/h |
Chassis
| Parameter | Specification |
| Diesel engine | Cummins B3.9CS4-80C, 59 kW / 2500 rpm |
| Steering mechanism | Articulated steering: ±40° |
| Drive system | Closed hydraulic system for four-wheel driving |
| Swing of rear axle | ±6° |
| Parking braking | Wet multidisc brake |
| Travelling braking | Hydrostatic braking |
| Fuel tank | 30 L |
Drilling System
| Parameter | Specification |
| Rock drill | HC50 / HC95 / RD18U |
| Rod size | R38 / T38 |
| Impact power | 13 kW / 20 kW / 18 kW |
| Impact frequency | 62 Hz / 62 Hz / 57 Hz |
| Hole diameter | Ø32-76 mm / Ø42-89 mm |
| Beam rotation | 360° |
| Feed extension | 1600 mm |
| Model of drill boom | K21 |
| Form of drill boom | Self-leveling |
Electric Hydraulic Power Unit
| Parameter | Specification |
| Motor | 45 kW / 55 kW |
| Pump Type | Axial variable displacement piston pump |
| Rotation | 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 |
1. Underground Metal Mine Development
Ideal for tunnel development and production preparation in gold, copper, iron ore, zinc, lead, and other underground metal mines. The KJ215 efficiently drills blast holes for drift driving, crosscuts, and access tunnels.
2. Narrow Vein Mining Operations
Designed specifically for narrow underground workings and confined spaces. Its compact structure and articulated chassis allow flexible operation in tunnel sections ranging from 5–25 m² where larger drilling jumbos cannot easily access.
3. Hard Rock Tunnel Excavation
Suitable for railway tunnels, highway tunnels, hydropower tunnels, and underground civil engineering projects. The hydraulic drilling system delivers fast penetration rates and precise blast hole positioning in hard rock formations.
4. Underground Mine Infrastructure Construction
Widely used for the development of ventilation drifts, transportation tunnels, service galleries, pump chambers, and other underground mine infrastructure requiring accurate drilling and controlled blasting.
5. Cross-Cut and Lateral Drift Development
The flexible boom system can be used for cross-cut excavation, branch tunnel construction, and underground roadway expansion projects, improving drilling coverage and excavation efficiency.
6. Rock Bolting and Ground Support Applications
In addition to face drilling, the boom can perform rock bolt hole drilling and ground support operations, helping improve tunnel stability and underground safety during mining and tunneling projects.
1. Designed for Narrow Underground Tunnels
Compact dimensions of only 1400 mm width allow the rig to operate efficiently in narrow underground drifts and mine roadways.
2. Excellent Drilling Coverage
The robust universal boom provides optimal face coverage for tunnel sections ranging from 5 m² to 25 m², reducing repositioning time and improving productivity.
3. Flexible and Precise Positioning
The feed beam can rotate 360° and automatically maintain level alignment, enabling fast and accurate hole positioning for vertical, inclined, and horizontal drilling.
4. Multi-Purpose Drilling Capability
In addition to blast-hole drilling, the boom can be used for cross-cut excavation and rock bolting operations, increasing equipment utilization.
5. High Mobility in Confined Areas
The balanced four-wheel-drive articulated chassis ensures excellent maneuverability, stability, and safety in narrow underground workings.
6. High Drilling Efficiency
Equipped with a high-frequency hydraulic rock drill featuring stepped-piston technology, the rig delivers faster penetration rates, lower drilling tool consumption, and higher equipment reliability.
Q1:Can the machine be customized?
Yes. Drilling coverage, rock drill model, electrical system, engine configuration, and other specifications can be customized to meet specific project requirements.
Q2:Which payment term can you accept?
30% T/T in advanced, 70% T/T against the B/L copy.
Q3:What is the delivery time?
Standard production lead time is usually 30–60 days after receiving the deposit, depending on configuration and order quantity.
Q4:How are spare parts supplied?
Common spare parts are available from stock and can be shipped by express courier, air freight, or sea freight according to customer requirements.
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