Cutting technology

Wirtgen 220 SMi 3.8 Surface Miner – High-Performance Chalk Mining in France

Soil stabilization, a process widely used throughout the world, is the ideal solution for producing compactable soil with good paving properties from a sub-base with insufficient bearing capacity.

Wirtgen, the cold milling machine specialist, is boosting milling efficiency in the long-term with its new large milling machine generation

Wirtgen’s 220 SM 3.8/220 SMi 3.8 surface miner selectively mines raw materials up to a cutting depth of 350 mm and a uniaxial compressive strength of 35 MPa.

Wirtgen’s PCD cutters have a tip made of artificial diamond material and produce an exceedingly uniform milled surface.

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.

From now on, the class leader W 150 CF/W 150 CFi can also be equipped with a 1,800-mm milling drum assembly. Customers therefore profit from a wider range of applications.

Cold milling is one of the first measures taken when a roadway or traffic area needs to be rehabilitated.

For its WR series, Wirtgen has developed a solution that is more than a match for even the most extreme requirements in both applications: the new DURAFORCE milling and mixing rotor.