Underground Mining Equipment
Hydraulic Drilling Jumbos, HT81(for Tunneling)
Our hydraulic drilling jumbo is equipped with a compact structure, small external dimensions, energy efficiency, low noise, multifunctionality, and high efficiency, enabling mechanized operations in rock tunneling and significantly improving excavation speed.
Suitable for tunneling operations in various underground passages and culverts, such as those in metal mines and hydropower projects, this equipment features a fully hydraulic drilling system and an anti-jamming function for drill steels.
The entire series of drilling jumbos offers excellent maneuverability, a small turning radius, and a climbing capacity of 14°, ensuring both construction efficiency and quality.
- Drifter
- Boom with double triangle floating support system
- Anti-jamming function
- Chassis with 4-cylinder diesel engine
- Feed
- Control system
| Model | HT81 | |||
| Applicable cross section | 4000x4000--6100x6100mm | |||
| Overall dimensions (L×W×H) | 12000x1850x2280（2880）mm | |||
| Ground clearance | 300mm | |||
| Overall weight | 13500kg | |||
| Min. turning radius | Inner: 3500 mm / Outer: 5480 mm | |||
| Gradeability | 14° | |||
| Speed | ≤15km/h | |||
| Hydraulic oil tank | 120L | |||
| Drifter | ||||
| Model | RC2200  | YYG18U  | YYG22U  | HC95LMa  |
| Power | 21kW | 18kW | 22kW | 21kW |
| Frequency | 55Hz | 57Hz | 53Hz | 58Hz |
| Pressure | 120-220bar | 130-200bar | 180-200bar | 180-200bar |
| Slewing system | Independent | Independent | Independent | Independent |
| Slewing speed | 0-285r/min | 0-220r/min | 0-220r/min | 0-303r/min |
| Max. Torque | 720N.m | 1050N.m | 1050N.m | 764N.m |
| Feeder | ||||
| Total length | 5262/5972mm | 5262/5972mm | 5972mm | 5972mm |
| Drill rod length | 3700/4305mm | 3700/4305mm | 4305mm | 4305mm |
| Hole depth | 3370/3970mm | 3370/3970mm | 3970mm | 3970mm |
| Weight | 630/660kg | 610/640kg | 640kg | 640kg |
| Feed force | 13kN | 13kN | 13kN | 13kN |
| Drill boom | ||||
| Boom extension | 1250mm | |||
| Horizontal hole coverage | Full coverage | |||
| Boom rotation | ±180° | |||
| Boom (lift/tilt angle) | +60°/-30° | |||
| Boom swing angle | ±35° | |||
| Boom weight | 2015kg | |||
| Water and compressed air system | ||||
| Max. flow rate of pump (12bar) | 4m³/h | |||
| Air displacement of compressor | 1m³/min | |||
| Electric drive system | ||||
| Model | RC2000/YYG22U/HC95LMa | YYG18U | ||
| Total power | 85.5kW | 65.5kW | ||
| Main motor power | 75kW | 55kW | ||
| Rated voltage | 380V (customized) | |||
| Chassis | ||||
| Engine | Dongfanghong diesel engine | |||
| Rated power（2200r/min） | 73.6kW | |||
| Torque (1650r/min) | 319.5N.m | |||
| Hydraulic system | Hydraulic proportional control valves Anti-jamming function Fail-safe brake system | |||
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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