Rockster R900 impactor

Published 5/10, 2020 at 14:49

The number of demolition projects has been increasing steadily over the years, and the disposal of construction waste has become more and more expensive.

This meant that the next logical step for Martin Meier Erdbau was the purchase of a mobile crusher so that demolition material could be recycled anywhere and at any time.

Martin Meier's decision to purchase exactly the crusher that he had happened to see when holidaying was made quickly. It was a Rockster R900 impact crusher, which impressed immediately due to its compact transport dimensions of 9.6m in length, 2.5m in width and 3.2m in height and a weight of only 25.5t. Demolition, earthworks and transport have been Meier's specialties since the company's founding in 1977. With a team of 16 employees and a fleet of 50 or so construction machines and trucks, the Bavarian company is extremely well positioned, although until the purchase of Rockster R900, the recycling of construction waste had been outsourced.


Expansion to contract crushing business

“By purchasing our own mobile crusher, we are now not only able to immediately recycle construction materials from our construction sites, but we can also increase our revenue from renting our mobile crushing plant,” says Martin Meier. Transport with one of the company's trucks is particularly beneficial for the contract crushing business. In order to work in the natural stone processing business, processing extremely abrasive stone in a wear friendly manner, the purchase of a jaw crusher unit is also being considered using the Rockster ‘Duplex’ system, which sees the impact crusher being converted into a jaw crusher by exchanging the crushing units within only a few hours.


Simple handling and the optimally defined end-material 

Martin Meier's son Max and Martin Loschge are the main machine operators of the crusher. “I particularly like the easy handling of the crusher. I can conveniently control the speed of the vibrating chute in the feed hopper, main discharge belt as well as the rotor and motor speed. All this done from the excavator via radio remote control,” says Max. “The final material is nice and coarse grained and therefore very stable and compact when installed.” The company mainly uses the recycled material as a substructure for large halls, private houses or in road construction. Thanks to Rockster's hydrostatic drive and the double apron design, a very precisely defined final product size can be generated, even without an additional screening system. The two impact aprons are set separately, which means that in the event of an overload situation in the crushing chamber, the upper impact apron opens, but the lower one remains in the set gap position and therefore hardly any oversized material is produced.

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