WIRTGEN 220 SMi 3.8
Surface Miner
Equipment Specifications
| SPECIFICATIONS - Cutting depth | 11.8 in |
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| SPECIFICATIONS - Power | 708 kW / 950 hp |
| SPECIFICATIONS - Cutting width max. | 7 ft 3 in |
| SPECIFICATIONS - Exhaust emissions category | EU Stage 4/US EPA Tier 4f |
| SPECIFICATIONS - Displacement | 8.1 Imp.gal |
| SPECIFICATIONS - Operating weight, CE | 130,095 lbs |
| SPECIFICATIONS - Max. travel speed | 0 - 276 ft / min (0 - 3.1 mph) |
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Featured Content
As the surface miner moves forward, a special cutting drum rotates against the direction of travel, cutting layers of material from the rock formations and crushing it in the process. The primary conveyor picks up the material in the drum housing and transports it towards the rear of the machine, where it is then accepted by the slewable and height-adjustable discharge conveyor. The discharge conveyor loads the material into trucks or dumpers or discharges it to the side of the miner. The discharge height can be adjusted to the height of the transport vehicles. The surface miner is driven via four steerable and height-adjustable track units. An automatic leveling system ensures precise adherence to the cutting depth, thus enabling even thin seams or layers to be mined selectively and with maximum accuracy.
High quality results are the goal of every construction project. This applies to road rehabilitation using cold milling machines and cold recyclers as well as to soil stabilization and the extraction of minerals with surface miners. In order to remove pavement with precision and efficiency, it is essential that the drum, pick holder, and pick work together perfectly.
WIRTGEN is the market leader in cutting technology and offers customers high-performance cutting systems whose components are designed to be fully compatible. In addition, WIRTGEN continuously makes advancements to these cutting technology components, incorporating its practical experience and feedback from customers into the process.
WIRTGEN’s leveling technology adjusts height, depth, and pitch for extremely accurate results. In the process, the system permanently compares the actual values to predefined target values and adjusts the deviations proportionally. This state-of-the-art machine technology consistently guarantees outstanding leveling results and significantly reduces the machine operator’s workload.
WIRTGEN offers customers reliable hardware and software developed in-house. In this context, a variety of systems are used depending on the construction project and local conditions at the job site.
Maximum performance on soft rock
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The design of the 12 ft 6 in (3.8-m) cutting drum unit installed in the 220 SM 3.8 / 220 SMi 3.8 has been optimized for the mining of soft rock to ensure maximum productivity at minimum operating costs.
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The surface miner extracts natural resources at a cutting depth of up to 13.8 in (350 mm) and with an unconfined compressive strength of up to 35 MPa selectively.
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The compact 220 SM 3.8 / 220 SMi 3.8 is the ideal candidate for use in small-scale to largescale mining operations.
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Natural resources are extracted in a single, environmentally sustainable operation without drilling and blasting, yielding material of high quality.
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Windrowing enables the mined material to be deposited behind the machine in a continuous process.