In 2018, Demarec introduced its new DCC series, widening its range with two-cylinder crushers for excavators up to 80 tonnes. One of the first crushers of this type, the DCC-75, premiered at Johann Ettengruber GmbH. It was delivered in variant A with a large jaw opening and high crushing force. A crusher that would make demolition more efficient and faster, that was Ettengruber‘s goal. Ettengruber has made a name for itself in challenging building and installation demolition projects. With a short blade and large crushing teeth area, the DCC-75 was apparently optimally equipped for this work. Kiesel fixed it to their Hitachi ZX670, adapted the pressure and power, and away they went with it.
“In the meantime, we had feedback from other customers working with the A variant of the DCC,” explains Coskun. His summary only matched that of Ettengruber to an extent. “Most operators found the short blades ideal for their work.” On account of the wide variety of projects managed daily by the demolition companies, the crusher had to meet individual requirements.
Anyone who has to work on structures with hard concrete and a moderate content of reinforcement iron preferred the DCC-A variant with a short blade, which is exposed to less wear due to its large jaw opening. Those, however, who are mostly challenged with extreme steel-reinforced concrete like Ettengruber, preferred the DCC-C variant.
In dialogue with the customer, Kiesel and Demarec decided to meet both requirements with two series: DCC-A with a short blade and DCC-C with a long blade, both of which are available for the entire range for excavators from 14 to 80 tonnes. In the case of the long blades, the crusher is also available with exchangeable wear parts.