Thanks to the Revox® drive concept, a gear coupling unit, it has become possible to combine an energy-saving direct drive with the versatility of hydraulic drive technology. The core of this drive system is a power-split drive train. A hydraulic motor mounted either takes care of the starting process to ensure gentle, safe running-up of the crusher rotor. Highly sensitive electronic control systems can be dispensed with. The option of reversibility is particularly important in jaw cutters. For removing blockages in the crushing jaw as well as with various materials (such as bitumen), it is possible to operate the machine in reverse with the help of a hydraulic motor - and with full cutting torque.