The overall design, drive concept and performance of this primary crushing plant have been specifically tailored to the requirements of quarry use. The SStR 1250 x 1000 jaw crusher weighs as much as 49 tons, is equipped with an especially long crushing jaw, and has a drive power of 200 kW. The 540-kVA generator produces sufficient energy during the crushing operation to drive additional external consumers, such as vibrating screens, a lighting system or mobile conveyor belts.