Milling rate up
For this mammoth project, CR Almeida is using the efficient W 200 large milling machine, which runs in continuous operation 24 hours a day during the rehabilitation work. This is where the powerhouse can really put its enormous capabilities to the test.
That’s because the W 200, with its powerful engine delivering a maximum power of 410 kW, is specially configured for high area outputs – whether on large sites or in confined spaces. The manoeuvrability of the large milling machine particularly proves its worth in the very narrow defiles that snake their way through the Brazilian uplands 40 km south of São Paulo, so that the W 200 was able to mill both road surfaces over a width of 2 m and to a depth of 8 cm rapidly and precisely in one operation.
Operating costs down
Milling machine operator Janderson de Souza Mota emphasises the ease of handling offered by the WIDRIVE machine control system, which links the most important machine functions together: “While the engine, for instance, sets the operating speed automatically when the milling process is started, it automatically returns to its idling speed when milling is finished. This allows us to reduce not only fuel consumption but also noise emissions.” What is more, the water required for cooling the cutting tools is regulated as a function of the engine load and milling speed. The load-dependent sprinkler unit allows a water saving of up to 20 %. “For us that means we need to fill up less water, but the service life of the cutting tools is still longer,” says the site Manager Cleiton Farias de Jesus, delighted with the much lower downtimes.