EBZ340A Roadheader
The Weishi EBZ340A heavy-duty cantilever roadheader is a flagship 128-ton longitudinal axis hard rock tunneling machine. Designed by Weishi Heavy Industry to meet the needs of deep-mining, multi-million-ton-level mines, it is specifically designed for directional drilling of ultra-large cross-sections and 130MPa-level dense, ultra-high hardness intact rock formations. It provides a one-stop solution to industry pain points such as severe vibration and poor cross-section formation in deep-well hard rock tunneling. It is fully adaptable to the construction conditions of deep, high-stress intact sandstone and limestone tunnels. The entire machine’s power, cutting load capacity, and body stability have been upgraded to heavy-duty performance, achieving one-time forming of ultra-large cross-sections and long-term stable continuous tunneling.
Key Product Highlights:
The Heavy-Duty Hard Rock Roadheader adopts a patented rear-end clamping cutting head with 45 sets of high-strength alloy tooth seats arranged with optimized mechanics, improving rock-breaking efficiency by 35% and wear resistance by 50%. The cutting head has an internal independent spline lubrication oil channel for continuous lubrication of the transmission pair. The cantilever is equipped with double-layered dustproof floating seals to isolate rock dust and water mist, completely solving high-frequency failures such as high bearing temperature, oil seepage, and spline wear during long-term operation in deep, hard rock. It also features anti-detachment limit tooth seats, significantly reducing the frequency of downtime for replacing cutting teeth. The 250mm deep bottom-laying design ensures no residual rock remains at the bottom of the roadway, eliminating the need for manual cleaning.
The 39㎡ roadway is formed in a single pass, eliminating the need for manual widening and trimming, increasing effective tunneling time per shift, accelerating mining and tunneling connections, and improving raw coal production efficiency.
A 400m³/h four-claw star wheel shovel paired with a 480m³/h side double-chain scraper conveyor allows for direct transport of large rocks without manual crushing, preventing rock pile-up and jamming. The shovel and chute are fully welded with wear-resistant alloy, ensuring long-term durability in high-rock-producing working faces.
Full-chain safety protection and real-time fault warnings reduce unexpected downtime. The machine is designed with a complete intelligent upgrade channel, and the construction of smart mines can be promoted later by simply adding supporting modules without replacing the entire machine. The equipment has a significant advantage in terms of input-output ratio throughout its entire life cycle.
Is the EBZ340A Heavy-Duty Hard Rock Roadheader Suitable for Your Mine?
Selecting a heavy-duty hard rock roadheader requires more than checking cutting motor power or maximum rock strength. Geological conditions, roadway dimensions, floor stability, material handling capacity, and equipment accessibility all affect the suitability of the machine.
The EBZ340A Roadheader Machine For Large Section Hard Rock is designed for demanding underground mine roadway excavation, particularly where a longitudinal-axis cutting system and reinforced machine structure are required for large-section hard rock development.
Before selecting the equipment, mine operators should evaluate the following working conditions.
For projects involving particularly hard or abrasive rock, geological reports and rock test data should be reviewed before confirming the machine configuration.
Choosing the right heavy-duty hard rock roadheader starts with understanding the actual geological and construction conditions.
WEISHI provides Hard Rock Roadheader Machines and technical support for underground mining and roadway development projects.
Share your geological conditions, roadway drawings, rock strength, excavation dimensions and project requirements with our team. We can help review the EBZ340A configuration and discuss equipment selection, customization requirements and spare parts support.
Contact WEISHI to Request a Technical Consultation or Equipment Quotation.
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