Hydraulic Drilling Jumbo, HT71-A
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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
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