Award Winning Track Mounted Impact Crusher

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Shortly before its world premiere at the INTERMAT in Paris, the new track-mounted Keestrack R3e impact crusher unit received the international Red Dot Award 2018 design prize in the “Industrial equipment, Machines and Automation” category. Besides the attractive design, which will characterise all future models of the new series of the international specialist in mineral processing technology – the designers have also implemented innovative ideas for operation and industrial safety in their development as well as integrating multistage production steps and a forward-looking fully hybrid power unit in a compact and highly mobile machine concept. “After three years of development, the Keestrack R3e is the machine, which combines all key features of our hybrid technology. It perfectly applies to customer needs for compact high-performance crushers and reflects in an almost spectacular way - our design philosophy, optimized in terms of safety and ease of operation,” summarizes Kees Hoogendoorn on the positive customer reactions at the premiere in Paris.
Modern Technology in a New Look
As a highly mobile solution with a broad range of applications from short-term construction-site operations to flexible semi-stationary production in medium-sized recycling and production companies, the Keestrack R3e has been leading among the 30 tonne impact crusher units for many years. The new generation has been launched in a modern, attractive design, and these plants are also characterised by fast loading, short set-up times on site and a high level of mobility thanks to the support-less frame construction with the rugged undercarriage track frame.
For further information, contact:
Etrack Crushers Private Limited.
E: etrack@keestrack.net
T: +91 124 4317049/50/51
At the heart of the R3e is the high-performance impact crusher with a large 770 x 960 mm inlet, which has an excellent crushing efficiency up to 250 t/h, thanks to the heavy-duty 920 mm rotor (diameter: 1100 mm, 3200 kg) and high rotor speeds. It includes specially adapted crushing tools, a wide adjustment range for both impact aprons (milling beam is optional) and a sophisticated overload system safeguard and a broad range of applications from concrete recycling with intensive wear to the production of high-quality natural stone grains.
Hybrid Solution with a High-Performance Potential
Thanks to the 235 kW EU IV Volvo diesel engine (option: EU IIIA; 260 kW) and 300 kVA generator as the on-board energy source, the new Keestrack R3e remains fully autonomous and highly flexible when deployed interchangeably to construction sites. The crusher is powered either by 132 kW or 160 kW electric motors, the exchangeable belt pulleys (375 mm/450 mm) can be used to adjust the crusher’s performance characteristics. A 45-kW 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). Through the large use of electric drives in all conveyor systems and peripheral units, extensive hydraulic piping, among other things, is a thing of the past. New cyclone extraction technology reduces the required volume of hydraulic oil in the system for identical change intervals to a mere 75 litres, thereby decreasing maintenance costs and operating costs decisively. The R3e has an external 63 A plug-out connection for the economic operation of subsequently connected screening units or stockpile conveyors as well as a standard plug-in connector for full electric operation from the mains, or an additional generator. All the system
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functions are controlled via the PLC controller with the new intuitive user console and comprehensive remote-control unit which remains active without the use of the on-board diesel engine. The optional single-deck-after-screening unit offers almost 4.4 m² screening area, thereby considerably optimising machine performance in the production of high-grade final grains. 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 (transport dimensions (l/w/h): 12,900 x 2540 x 3200 mm). Even when fully equipped (including milling beam), the fully hybrid R3e only has a transport weight of around 32.0 t, which is therefore barely 1000 kg higher than the conventional diesel hydraulic version. Keestrack-er telematics system (optional), running over a UMTS GPS tracking system, transfers all parameters and load conditions in real-time access to tablet, laptop or smart phone of the operator in the safe environment of the excavator- or wheel loader cabin and informs him of the crusher’s performance and if any technical problems occur, resulting in a high level of health and safety, as the operator does not need to leave the safe area of his cabin. All the data is sent to him and to the office of his supervisor or planner, the distributor and the manufacturer, who can all help and assist via the telematic system. The GPS system also protects the valuable crusher from theft with its geo-fencing tracking system and informs the service operator where the unit is on site, reducing on site movement.
Systematic Electrification
Keestrack predicts immediate savings in energy costs of between 40 and 70 per cent compared to the conventional diesel hydraulic drives for its diesel electric crushing machines or fully hybrid solutions with optional plug-in power supply. Other advantages include lower maintenance costs primarily for electrical conveyor systems and screening modules and an overall higher service life for drive components that are more uniformly loaded. Over the past two years, the manufacturer presented in quick succession the impact crusher units: Keestrack R5e and R6e, jaw crushers B3e and B4e and cone crushers H4e and H6e, each of which are fully developed crushing solutions for partially electric or fully hybrid deployment in all relevant applications and power classes of mobile recycling and mineral production. The on-board diesel generator set ensures a fully autonomous standalone solutions for a range of high grade-end products or as all-electric multistage crushers with directly connected electrical screening machines or stockpile conveyors. Keestrack’s hybrid units offer considerable costeffectiveness without compromising flexibility or mobility.
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