Underground Mining Equipment
Two-Boom Hydraulic Bolting Jumbo, HT91/2
One of the most attractive features of the hydraulic drilling jumbo for tunneling is its double-boom design, making it suitable for a large drilling cross section area. The tunneling jumbo has two drive methods, single-power and dual power, giving it a wider range of efficiency and power options. Equipped with a hydraulic drilling system, the underground tunneling machinery is extremely reliable and durable, making it the preferred choice by many companies involved in the construction and drilling of mines, tunnels and more.
- Rock drill: available with RC1200 or HC25
- Anti-jamming function
- Boom: universal telescopic boom
- Drifter
- Undercarriage: four-wheel drive, Cummins three-stage diesel engine
| Width | 1750 mm |
| Height (operator roof lowered) | 2270 mm |
| Height (operator roof elevated) | 3140 mm |
| Total length | 10000 mm |
| Ground clearance | 280 mm |
| Weight | 15000±500 kg |
| Rock drill | RC1200 | HC25 |
| Impact power | 14kW | 8kW |
| Impact pressure | 180bar（max） | 150bar（max） |
| Impact frequency | 100Hz | 65Hz |
| Slewing unit | independent slewing | |
| Slewing speed | 430 r/min | 300 r/min |
| Slewing torque | 390N·m | 401 N·m |
| Rod type | B28 | B25 |
| Hole diameter | ⌀32- ⌀43 | ⌀32- ⌀43 |
| Length | 572mm | 708mm |
| Width | 326mm | 200mm |
| Height | 180mm | 192mm |
| Weight | 126kg | 72kg |
| Shank type | R32 | R32 |
| Type | RC1200 | HC25 |
| Total length mm | 3070 | 3200 |
| Rod length mm | 2475 | 2475 |
| Split bolt mm | 2000 | 2000 |
| Resin grouted bolt mm | 2200 | 2200 |
| Hole depth mm | 2280 | 2280 |
| Weight kg | 500 | 450 |
| Feed force kN | 10 | |
| Working pressure Pa | ≤10Mpa | |
- Bolt type: split bolt / resin grouted bolt
- Bolt QTY.: 10 (size≤150mm)
- Bolt length: 1500~2500mm
- Tilt/lift angle: +45°/-16°
- Swing angle: 46° (left), 45° (right)
- Retractable length: 1250mm
- Feed extension: 480mm
- Rollover angle of drifter: ±180°
- Tilt/lift angle of drifter: +80°/-25°
- Weight: 1200kg
- Air compressor
- Capacity (8bar): 0.7m³/min
- Air tank volume: 60L
- Air pressure monitoring
- Water pump: CDL2-15
- Max. flow (12bar): 2m³/h
- Min. water inlet pressure: 2 bar
- Water pressure monitoring
| Installed power | 64kW |
| Main motor power | 55kW |
| Voltage | 380V (customized) |
| Frequency | 50Hz |
| Cable reel diameter | 1080mm |
| Thermal overload protection for motor | |
| Impact timer | |
| Power distribution cabinet with digital voltage and ammeter | |
| Phase sequence indicator | |
| Battery | |
- Pump displacement (impact/slewing): 100cc/32cc
- Max. oil tank capacity: 200L
- Filter efficiency: 10μm
- Hydraulic oil level sensor
- Manual fuel pump
- Oil temperature sensor
- Water cooler
- Cummins three-stage diesel engine
- Power (2400r/min): 74kW
- Torque (1600r/min): 330Nm
- Steering angle: ±35°
- Rear axle swing angle: 8°
- Diesel tank capacity: 54L
- Exhaust gas purification: three-way catalyst
- Battery: 24V, 2 x 120Ah
- Front work light: 4x40W
- Rear work light: 4x40W
- Tyre size: 10.00-20
- Gradability: 16°
- Front support leg: 2
- Rear support leg: 2
- Four-wheel drive
- Hydraulic steering system
- Service brake, parking brake
- Fire suppression
- Warning lights with horn
| Type | Cross section mm2 | Diameter mm | Length m | ||
| MC-0.38/0.66 | 3x35+1x10 | 40 | 70 | ||
Get in Touch
Huatai is a Chinese company specialized in the design and batch production of rock drilling equipment. Since its inception in 2000, the company has been committed to manufacturing cutting edge products and providing the highest levels of customer service for a number of enterprises engaged in the mining, metallurgical and foundation engineer sectors.
Huatai has achieved continuous self-transcendence and filled several gaps in the domestic market through 20 years of ongoing innovation and development in the underground mining and rock drilling industry. Today, our product line includes more than 30 types of mine rock drilling machines which are fallen into three categories, i.e. underground mining equipment, coal mining equipment and shaft drilling jumbos. Years of our constant growth and improvement have resulted in a respectable achievement in the domestic rock drilling machine industry, increasing the safety, efficiency, and cost-effectiveness for underground mine engineering and tunneling construction operations.
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