Hydraulic Bolting Jumbo, HT92-D (Min. Cross-section height: 2.8m)
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The HT92-D hydraulic bolting jumbo (mini. cross section height: 2.8 m) is designed for efficient bolting operations in compact tunnels and underground metal mines. Its special feed mechanism allows reliable bolting in tunnels as small as 2.8 m × 2.8 m.
Equipped with an advanced electro-hydraulic drilling system and an anti-jamming device, the hydraulic bolting jumbo delivers fast drilling speed, high efficiency, and stable performance. The compact and highly maneuverable design ensures smooth operation in confined spaces, improving both working conditions and overall construction quality.
| Hydraulic drilling jumbo | Suitable cross section | 2800×2800-3500×3500mm |
| Length | 9100mm | |
| Width | 1500mm | |
| Height (roof down) | 1800mm | |
| Height (roof up) | 2500mm | |
| GYTM412LD | Min. turning radius | Inner 3000mm / outer 5150mm |
| Gradeability | 14° | |
| Traveling speed | 3.8km/h | |
| Total weight | 12000kg | |
| Ground clearance | 280mm | |
| Hydraulic drifter | Model | RC1200 |
| Percussion power | 14kW | |
| Percussion frequency | 100Hz | |
| Max. Impact pressure | 180bar | |
| Rotation system | Independent rotation | |
| Shank | R32 | |
| Hole size | 32-45mm | |
| Feed system | Feed length | 2780mm |
| Split set bolt length | 1800mm | |
| Working pressure | ≤10MPa | |
| Feed force | 10kN | |
| Feed tilting angle | 80°-25° | |
| Feed rotation angle | ±180° | |
| Feed compensation stroke | 480mm | |
| Boom | Tilting angle | 50° / -30° |
| Boom extension | 900mm | |
| Swing angle | ±35° | |
| Chassis | Engine | Cummins Stage IV diesel engine |
| Rated output power (2400r/min) | 54kW | |
| Torque | 320N.m | |
| Rear axle oscillation | 7° | |
| Steering angle | ±35° | |
| Hydraulic system | Percussion/displacement | 100cc/32cc |
| Max. oil tank capacity | 100L | |
| Filter fineness | 10μm | |
| Oil level sensor: equipped | ||
| Water cooler: equipped | ||