EBZ280D Cantilever Roadheader
EBZ280D cantilever roadheader is a heavy-duty model specially built for ultra-hard rock tunneling. With a total weight of 106 tons, it is equipped with a dual-power cutting motor (280/200 kW) and two adjustable rotating speeds (54/27 r/min). It cuts hard rock with uniaxial compressive strength up to 110 MPa under extreme conditions and runs economically and efficiently for strata of 70 MPa. The cutting height ranges 3.1–5.2 m, cutting width 4.2–6.2 m, and cutting area 13.2–32.2 ㎡ for extra-large-section roadways.
EBZ280D cantilever roadheader is a heavy-duty model specially built for ultra-hard rock tunneling. With a total weight of 106 tons, it is equipped with a dual-power cutting motor (280/200 kW) and two adjustable rotating speeds (54/27 r/min). It cuts hard rock with uniaxial compressive strength up to 110 MPa under extreme conditions and runs economically and efficiently for strata of 70 MPa. The cutting height ranges 3.1–5.2 m, cutting width 4.2–6.2 m, and cutting area 13.2–32.2 ㎡ for extra-large-section roadways. The 3.6-m wide shovel plate with 480 mm sumping depth delivers outstanding muck-clearing performance. Its climbing capacity covers +18° ascending to −25° descending slopes for diverse gradient scenarios. Adopting split modular design, the heaviest single non-detachable component weighs only 9.7 tons for convenient cross-border shipping and underground segmented transfer. Compatible with mainstream international mine power supply AC1140V-50Hz, it serves as the flagship tunneling equipment for large mines with high-hardness rock strata.
| EBZ280D Boom-Type Roadheader – Main Parameters | |
| Total weight (t) | 106 |
| Machine body length (m) | 12.15 |
| Machine body height (m) | Cover plate 2.0 / Cutting head horizontal 2.5 |
| Track outer width (m) | 3.14 |
| Gathering head total width (m) | 3.6 |
| Positioning cutting height (m) | 3.1 – 5.2 |
| Positioning cutting width (m) | 4.2 – 6.2 |
| Cutting area (m²) | 13.2 – 32.2 |
| Climbing ability (°) | +18 to –25 |
| Cutting head weight (kg) | 200 |
| Gathering head weight (kg) | 480 |
| Maximum cutting force (kN) | 110 / 70 |
| Ground bearing pressure (MPa) | 0.19 |
| Cutting motor power (kW) | 280 / 200 |
| Cutting head speed (r/min) | 54 / 27 |
| Oil pump motor power (kW) | 160 |
| Supply voltage | AC1140V – 50Hz |
| Maximum non-detachable part dimensions (mm) | Front main frame: 3.3 × 1.56 × 1.58 (can be split) Middle chute: 3.09 × 0.79 × 0.60 Rear support frame: 3.01 × 1.59 × 1.53 |
| Maximum non-detachable part weight (t) | 9.7 |
Powerful ultra-hard-rock performance with flexible dual-power dual-speed modes
The 280 kW heavy-duty mode crushes compact rock of 110 MPa, while the 200 kW energy-saving mode reduces operating costs for ordinary strata. 54 r/min enables fast tunneling and 27 r/min offers high torque for tough rock. It avoids stalling when working in rock with gangue interlayers and faults to support long-term continuous operation in complex geology.
High-efficiency extra-large-section tunneling with fine roadway shaping
The maximum cutting area reaches 32.2 ㎡ to form large roadways in one pass. The 200 mm cutting-head sumping depth and 480 mm shovel-plate sumping depth thoroughly remove floor residues, cutting manual leveling work and improving roadway smoothness.
Stable wide-track chassis for reliable mobility on extreme slopes
The 3.14-m widened tracks keep ground pressure at 0.19 MPa to prevent sinking and slipping on muddy soft ground. Climbing capacity of +18° uphill and −25° downhill adapts to sloped roadways and downward tunneling. The 3.6-m wide shovel plate collects muck broadly to match intensive tunneling and reduce blockage downtime.
Durable heavy-duty structure for longer service life of core components
The 106-ton overall weight enhances operational stability. Mine-grade wear-resistant parts are adopted for the cutting unit and hydraulic system to lower failure rates under heavy hard-rock loads and extend effective monthly tunneling time.
Split modular transportation for easy deployment in large overseas mines
Separable modules including front main frame, middle conveyor and rear support frame are shipped separately, with the maximum single component weight of 9.7 tons suitable for narrow underground haulage passages. Matched with international mine power standards, standardized on-site assembly shortens commissioning cycles.
Customized pre-sales technical support tailored to hard-rock scenarios
We design power-mode matching plans, split-transport layouts and gradient tunneling schedules according to local rock hardness, roadway dimensions, slope distribution and underground logistics. Geological risks such as faults and gangue interlayers are assessed in advance to provide full technical support for overseas projects.
Full-cycle overseas after-sales service to minimize downtime loss
Specialized training for heavy-duty hard-rock operation and slope-site skills is delivered remotely. Stocked genuine spare parts for cutting motors, hydraulic valves and transmission assemblies are available; online fast troubleshooting of speed-switching and climbing-related faults ensures stable high-yield mine production.
