Wirtgen Surface Mining for Raw Material Extraction and Routing Operations

The 220 SM/220 SMi surface miner is designed for use in small and medium sized mining operations as well as for routing work and infrastructure projects.

Extracting Raw Materials
With a cutting width of 2.2 m and a cutting depth of up to 300 mm, the 220 SM/ 220 SMi can extract raw materials up to a uniaxial compressive strength of 50 MPa. The extracted material is deposited behind the machine in a windrow and loaded onto trucks. Selective extraction makes it possible to mine raw materials with a high level of purity. This in turn reduces the amount of equipment, maintenance, and time required compared to drilling and blasting or rip-and-stack mining. In addition, refraining from drilling and blasting makes it possible to efficiently mine materials close to industrial sites and other infrastructure like pipelines or high-voltage power lines.

Thanks to its compact dimensions and smooth, hydraulic, all-track steering, the 220 SM/ 220 SMi also can operate in narrow sections such as ramps.

Versatility in Operation
The 220 SM/220 SMi can also be used for routing work and infrastructure projects. Where excavators or other machinery reach their performance limits, the surface miner can cut even the hardest rock, reduce it to the desired maximum grain size, and create stable and even surfaces with extreme precision.

Highly Productive Cutting Drum Unit
Specially designed for challenging windrow applications, the cutting drum unit turns the power delivered by the engine into maximum cutting power. This in turn increases productivity. In this process, the high, narrow sides of the holder base ensure that material flows smoothly, and energy consumption is kept to a minimum. This results in reduced wear and tear on the housing, holders, point-attack cutting tools, and scraper blade – even when mining hard, abrasive material.

All of the 220 SM/220 SMi’s components are designed for extremely demanding open-cast mining applications. This also applies to the massive track units with strong dual-bar base plates for excellent advance, even in difficult conditions.

Technology and Safety
Wirtgen offers innovative technology and design functions with the operator in mind for safe and efficient operation.

Wirtgen leveling technology allows the height, depth, and pitch to be adjusted for extremely accurate results while remaining intuitive and easy to operate.

In the ROPS/FOPS operator’s cabin, the operator is protected from external hazards. The cutting drum is easily and safely accessible from the rear through the scraper blade, which opens hydraulically. Pick changes are only carried out when the engine is off. Plenty of space to move, a hydraulic pick ejector, and a milling drum rotation device further simplify this process. Unintentionally switching on the miner can be prevented mechanically by locking the battery and starter isolator, this allows maintenance work to be carried out safely when the machine is shut down. The rear-view camera offers excellent visibility for fast, safe maneuvering. When reversing, Reverse Assist offers the operator added support.

The Wirtgen 220 SM/220 SMi achieves high daily outputs in soft and hard rock.

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