Underground Mining Equipment
Hydraulic Drilling Jumbo, HT71-A
The HT71-A hydraulic drilling jumbo is a medium-to-deep hole drilling machine equipped with a drill rod carousel. It is designed for drilling vertical or inclined fan-shaped holes and parallel holes in small and medium-sized underground mines.
Its rigid boom support, high-precision angle indicator, ergonomically designed enclosed cabin, and high-efficiency hydraulic drifter ensure safe, accurate, and efficient drilling operations.
The hydraulic drilling jumbo is also equipped with a remote-monitoring interface, enabling convenient data transmission and improving the overall productivity of underground operations.
| Hydraulic drilling jumbo | Suitable cross section | 3800×3800 - 6000×6000mm | |
| Dimensions (L × W × H) | 9950×1980×2868mm | ||
| Ground clearance | 330mm | ||
| HT71-A(CYTC76A) | Min. turning radius | Inner 3250 mm / Outer 6300 mm | |
| Gradeability | 14° | ||
| Total weight | 20000kg | ||
| Hydraulic drifter | Model | RC2200 | YYG22U |
| Percussion power | 21kW | 22kW | |
| Percussion frequency | 55Hz | 55Hz | |
| Impact pressure | 200bar | 220bar | |
| Rotation system | Independent rotation | Independent rotation | |
| Rotation speed | 0-285r/min | 0-220r/min | |
| Max. rotary torque | 720N.m | 1050N.m | |
| Feed | Model | 1220 Drill rods | 1525 Drill rods |
| Feed length | 3160mm | 3465mm | |
| Weight | 1300kg | 1400kg | |
| Feeding force | 14kN | 14kN | |
| Mechanized drilling depth | 35m | 42.6m | |
| Suitable tunnel height | Fed length +240mm | Feed length +240mm | |
| Rod storage capacity | 27+1 | 27+1 | |
| Tilting angle | +25° / -50° | ||
| Feed rollover angle | ±180° | ||
| Compensation stroke | 635mm | ||
| Boom weight | 2200kg | ||
| Electric system | Model | RC2200 / YYG22U | |
| Engine | 91kW | ||
| Main electric motor | 75kW | ||
| Voltage | 380V (optional) | ||
| Frequency | 50Hz | ||
| Air compressor | Air tank capacity | 60L | |
| Air displacement (8bar) | 1.5m³/min | ||
| Hydraulic system | Oil tank capacity | 235L | |
| Filter fineness | 10μm | ||
| Sensor | Differential pressure sensor for hydraulic oil filter | ||
| Pump | Manual oil pump / electronic oil pump | ||
| Chassis | Engine | Cummins Stage IV diesel engine | |
| Rated output power (2500r/min) | 81kW | ||
| Torque (1650r/min) | 480N.m | ||
| Fuel tank capacity | 65L | ||
| Exhaust gas purification | DOC+DPF | ||
| Gradeability | 14° | ||
| Electric cable length | 70m | ||
| Cable reel diameter | 1130mm | ||
| Steering angle | ±40° | ||
- The ROPS ergonomic cabin is equipped with an advanced operator station, heating and cooling air-conditioning systems, a jumbo driving display, and radar early-warning systems.
- To ensure excellent visibility and maintain drilling accuracy, the hydraulic drilling jumbo is fitted with a precision drilling angle indicator and provides a remote-monitoring interface for processing external data, enhancing underground operational efficiency.
- The jumbo supports 1.5-meter parallel hole drilling and ±180° full-range drilling. The drill rod carousel holds up to 28 rods, enabling a mechanized drilling depth of up to 42 meters. It can drill vertically downward and operate efficiently at multiple angles to meet various drilling requirements.
Outside Dimensions of Jombo Drill - Side View
Turning radius
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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