Keestrack introduces hybrid impact crusher

Keestrack, with U.S. offices in Krum, Texas, has introduced the R5e hybrid impact crusher unit, a 350-tons-per-hour crusher with electrical transport and screen components.

Keestrack’s track-mounted impact crusher units comprises three models. The R3 is a 30 ton construction site crusher, the R6 flagship model has a total weight of 60 tons and the Destroyer unit, a R6e model in a diesel-electric hybrid version with electric motors driving the conveyor belts and screen components.

The Keestrack R5 is a mid-range series of models with a 42-ton basic weight and a maximum 50 tons with an overband magnet and double-deck final screen, including an oversize material recycler. Following a series of upgrades, the R5e is a diesel-electric version of its 350 tons-per-hour model.

The R5e’s rotor is driven via the Volvo six-cylinder diesel engine. The operating hydraulics powers all the lifting cylinders on the chassis and conveyor belts, the track drive, the vibrating discharge chute and double-deck primary screen and the compact double-deck postscreen module with oversize/stockpile conveyor. A generator supplies the power to all other conveyor systems, including the vibrating feeder and the new optional Neodym overbelt magnets.

The R5e is also available with an optional dolly trailer chassis. Keestrack says all conveyors and additional modules can be configured without additional assembly work or support. The system uses load and level sensors to monitor production rate and quality during operations. All system functions can be controlled by radio remote as a standard or the optional Keestrack-er GPS/UMTS monitor designed to documents all functions and provide information on potential malfunctions or required maintenance work.

Keestrack says the R5e uses 45 percent less fuel compared to diesel-hydraulic models and the reduction of hydraulic lines results in lower cooling requirements, lower risks of leakage and lower maintenance demands during everyday operations.