Keestrack releases newly designed impact crusher

Keestrack, a manufacturer of mineral processing technology with U.S. offices in Krum, Texas, has released a new design its track-mounted impact crusher unit R3/R3e. The 30 ton model can be used at short-term construction site operations and for semistationary production in medium-sized recycling and production companies.

The Keestrack R3 features coverings and wide-opening doors and to access all operational components and satisfy the requirements for operational reliability and maintainability. It will be available in a diesel hydraulic R3 version and as a fully hybrid Keestrack R3e with a diesel electric drive and full electric plug-in power supply in spring 2018.

The 48 ICR 100-00  impact crusher features a large inlet opening can crush up to 250 tons per hour. Specially adapted crushing tools, an adjustment range for both impact aprons and an overload system are designed to safeguard a range of applications from concrete recycling with intensive wear to the production of natural stone grains.

The crusher is powered either by 132-kilowatt or 160-kilowatt electric motors and the exchangeable belt pulleys can be used to adjust the crusher’s performance characteristics. A 45-kilowatt electric motor with two connected load-sensing pumps provides power to all hydraulic components (drive, crusher control, hub hydraulics, feeder/post screening unit, cooling fans).

The R3e has an external 63 A plug-out connection for connected screening units or stockpile conveyors and a standard plug-in connector for full electric operation from the mains or an additional generator. All the system functions are controlled via the PLC controller with a new user console and remote control unit.

The new optional single-deck afterscreening unit is designed with 30 percent more screening area than the previous model. A recirculation conveyor and optional light-material air separator facilitates production in closed cycle, oversize grains can be optionally removed as a secondary product via a removable discharge side-conveyor. All other conveyors, including the optional fines discharge in the pre-screening unit, can be hydraulically folded for transport purposes.