EBZ280M-2H Bolter Miner
EBZ280M-2H bolter-miner is a high-end integrated mining equipment combining tunneling and roof bolting, with a total weight of 112 tons. It is fitted with a dual-power cutting motor (280/200 kW) and dual rotating speeds (55/27 r/min), capable of cutting hard rock with uniaxial compressive strength up to 110 MPa and operating efficiently and economically for 70-MPa strata. The 200-kW oil pump motor delivers strong hydraulic power.
EBZ280M-2H bolter-miner is a high-end integrated mining equipment combining tunneling and roof bolting, with a total weight of 112 tons. It is fitted with a dual-power cutting motor (280/200 kW) and dual rotating speeds (55/27 r/min), capable of cutting hard rock with uniaxial compressive strength up to 110 MPa and operating efficiently and economically for 70-MPa strata. The 200-kW oil pump motor delivers strong hydraulic power. Two built-in roof bolters work synchronously with tunneling: each bolter provides torque of 400 N·m and rated speed of 550 rpm, with supporting area of 4.2 ㎡ and supporting force of 30 KN. Bolting height ranges 3.2–5.1 m and bolting width 4.4–6.05 m to realize simultaneous excavation and reinforcement.The 3.21-m widened tracks keep ground pressure at 0.19 MPa and enable ±18° gradeability for sloped roadways. The 3.8-m wide shovel plate with 430-mm sumping depth achieves excellent muck removal. The split modular design limits the heaviest single non-detachable component to 6.5 tons for flexible cross-border shipping and underground transfer. Compatible with international mine power supply AC1140V-50Hz, it is the preferred bolting-tunneling integrated machine for rapid roadway formation in mines with hard rock strata.
| EBZ280M-2H Roadheader with Bolter – Main Parameters | |
| Total weight (t) | 112 |
| Machine body length (m) | 12.44 |
| Machine body height (m) | Body height 1.9 / Cutting head horizontal 2.95 / Highest point 2.95 |
| Track outer width (m) | 3.21 |
| Gathering head total width (m) | 3.8 |
| Climbing ability (°) | ±18 |
| Cutting head undercut (mm) | 200 |
| Gathering head undercut (mm) | 430 |
| Max / economical uniaxial compressive strength of cut rock (MPa) | 110 / 70 |
| Ground bearing pressure (MPa) | 0.19 |
| Cutting motor power (kW) | 280 / 200 |
| Cutting head speed (r/min) | 55 / 27 |
| Oil pump motor power (kW) | 200 |
| Supply voltage | AC1140V – 50Hz |
| Bolting height (m) | 3.2 – 5.1 |
| Bolting width (m) | 4.4 – 6.05 |
| Number of bolters | 2 |
| Bolter torque (N·m) | 400 |
| Bolter rated speed (rpm) | 550 |
| Support area (m²) | 4.2 |
| Support force (kN) | 30 |
| Maximum non-detachable part dimensions (m) | Front main frame: 2.53 × 1.56 × 1.26 Rear main frame: 2.18 × 1.41 × 1.5 Front chute: 4.44 × 0.86 × 0.51 Rear support frame: 3.4 × 1.77 × 1.52 |
| Maximum non-detachable part weight (t) | 6.5 |
Synchronized tunneling & bolting to shorten roadway completion cycle
Two bolters perform roof reinforcement while tunneling proceeds, eliminating the separate bolting phase after excavation. Cross-team interference is reduced, roadway construction speed is greatly improved and operational risks from multi-team overlapping work are lowered.
Dual-power dual-speed design for strong adaptability to hard-rock conditions
280-kW heavy-duty mode crushes compact rock up to 110 MPa, while 200-kW energy-saving mode works for ordinary strata. 55 r/min supports fast tunneling and 27 r/min supplies high torque for tough rock. It resists stalling in gangue-bearing and fault zones and balances crushing performance with energy cost.
Stable professional bolting parameters for reliable roadway reinforcement
400 N·m high torque and steady 550 rpm output paired with 30-KN supporting force firmly anchor surrounding rock. The wide bolting coverage fits mainstream large-section roadways and effectively prevents roof falling to improve underground safety.
Heavy-duty chassis with great trafficability and outstanding muck-clearing performance
3.21-m widened tracks avoid sinking and slipping on muddy soft ground under controlled ground pressure; ±18° gradeability adapts to sloped roadways. The 430-mm large shovel-plate sumping depth thoroughly cleans floor residues and reduces manual finishing work for smoother roadway pavement.
Lightweight split transportation for easy deployment in overseas mines
Modular parts including front frame, rear frame, front conveyor and rear support frame are shipped separately. The maximum single-component weight of 6.5 tons suits narrow underground haulage passages. Matched with international mine power standards, modular on-site assembly shortens commissioning cycles.
Customized pre-sales technical solutions
According to local rock hardness, roadway dimensions, slope distribution and bolting design requirements, we configure speed modes, bolt layout schemes and split-transport plans. Geological hazards such as surrounding-rock instability and faults are assessed in advance to deliver full technical support for overseas projects.
Full-cycle overseas after-sales guarantee
Specialized training for bolter-miner operation and maintenance is provided with remote guidance on coordinated tunneling-bolting workflows. Stocked genuine spare parts for cutting motors, bolting mechanisms and hydraulic assemblies are available; online troubleshooting of speed switching and bolting-system faults minimizes downtime and ensures continuous roadway construction.
