Wirtgen’s new WRC 240(i) crushes rock up to 30 cm in length

Wirtgen’s new WRC 240(i)

Wirtgen’s new WRC 240(i) breaks coarse rocks in-place while producing a consistent mix in a continuous process.

The working width of 2.3 metres and a working depth of up to 51 cm enables an output of up to 600 tonnes per hour.

The launch of the WRC 240(i) expands Wirtgen’s portfolio of wheeled soil stabilizers designed for the processing of stony ground.

In addition to the crushing of rocks and stones with an edge length of up to 30 cm and a compressive strength of up to 200 MPa, the machine can add cement and water in the same pass. This is beneficial in the preparation of base layers, as the machine pre-spreads cement with a binding agent spreader and the required water is sprayed into the mixing chamber of the rock crusher via the machine’s vario-injection bar.

The machine can also be used for soil stabilization. For this application, the pre-spread binding agents such as lime or cement are mixed into the existing soil with insufficient bearing capacity, transform it in-situ into a high-grade construction material and deposit it evenly behind the machine. The main task of the WRC is the granulation and mixing of a variety of soils and layers to produce a consistent final product in a continuous process. As opposed to the removal and replacement of material, the process translates to a shorter construction time, conservation of resources and lower emissions.

The crushing and mixing rotor with toolholders deliver optimal results when working in stony ground. The tools are fitted with large, impact-resistant carbide cutting edges and the holder bases are protected by wear-resistant protective elements made from high-tensile steel. This ensures high machine utilization rates and process reliability in demanding applications. Edge protectors reduce wear on the rotor’s edge ring segments. The rotor is driven via a transmission developed especially for the WRC that enables high rotor speeds.

Armoured rotor housing

To ensure long-term resistance to the stress encountered when crushing rocks, the rotor housing of the rock crusher is lined with abrasion-resistant wearing plates made from tough high-tensile steel. This guarantees a longer service life and increase the overall stability of the housing. The entire mixing chamber is lined with these extremely hard-wearing plates, which can be individually replaced if required.

More news from Wirtgen

Homogeneous grain sizes

The WRC 240(i) offers several setting options to achieve the desired grain size and consistently uniform distribution in a wide range of applications.  The machine offers nine rotor speeds, a variable crushing stage, exchangeable screens with a range of clear mesh sizes and adjustable distance from the rotor and adjustable rotor plate pressure. The advance rate enables the configuration of the machine to meet the needs of actual site conditions and the desired application.

AutoTrac system

By enabling precise, automatic steering, the satellite based AutoTrac system helps the WRC to improve process efficiency and, as a result of this, a high degree of environmental compatibility. AutoTrac steers the machine accurately within tolerances of a few centimetres based on a previously calculated reference strip and a specified overlap of adjacent strips, which enables consistent utilization of the machine’s ideal working width.

The Wirtgen Performance Tracker (WPT) registers all relevant location-specific working parameters to provide a comprehensive database for the analysis and documentation of the construction site.