In line with year’s themes at bauma, Keestrack will focus on sustainability, alternative drive systems and providing innovative solutions for the aggregates, recycling and mining industry. Bauma, the world’s biggest construction tradeshow, will open its doors from April 7-13 in Munich, Germany. Keestrack will be at booth FN 1016/9 and will launch two completely new machines at the show.
The R2, a high-performing and compact track mobile impact crusher, has been designed to complete Keestrack’s product range of impactors. The R2 is easy to operate within city centres where high flexibility and mobility are essential. In a lot of European cities there is a need for pure electric plug-in construction equipment. With the ZERO-drive, a full electric plug-in drive version, without any combustion engine onboard, Keestrack provides the ideal solution. The new impactor has a capacity up to 150 tph.
The crusher design features are nearly similar to the award winning bigger R3 impactor. The hopper (3 m³) with integrated vibrating feeder (3 300 x 810 mm) and pre-screen (1 250 x 810 mm) also have an asymmetric design to feed the material easy into the inlet (860 x 730 mm) which is equipped with a replaceable entry beam.
The newly designed rotor, with a width of 840 mm and a diameter of 920 mm, is made of Hardox steel. The rotor has the same design concept as the bigger R3, R5 and R6, designed to minimise wear. Rotor speed can be adjusted by a hydrostatic drive to finetune the desired grain size. The impact aprons can be serviced from the top which facilitates service maintenance.
The R2 impactor, fully equipped in closed circuit with a 1 200 x 3 040 mm single deck after screen, magnet separator and windsifter has a total weight under 27 t and a transport length of 13,05 m, making it a very agile impactor. The return conveyor of the closed circuit can also swivel outside to be used as a stockpile conveyor for oversize.
As on all Keestrack equipment, maintenance has been reduced by design, using drive and return drums which are greased for life, is just one of the examples.
The diesel/hydraulic R2 version is driven by the new DEUTZ TCD 5.2 L4 engine, which is very efficient, powerful and clean. It applies to all EU Stage V and US EPA Tier 4 and is able to run on ecological biodiesel. The R2 is also available in ZERO drive version, which is full electric plug-in and has no combustion engine.
Keestrack will also introduce the brand-new high-capacity 3-deck classifier to complete the product range for high capacity precision screening. The C7, with a capacity up to 600 t/h, is equipped with a triple deck screen box of 5 450 x 1 800 mm with interchangeable screen meshes, which can be changed quickly. The C7 is specifically designed for accurate and high-capacity precision screening for sand and aggregates. The walkways on each side of the screen box give perfect service and maintenance access. The C7 has no support legs, resulting in quick set up times.
The C7 3-deck classifier is available in conventional diesel/hydraulic drive, but Keestrack’s R&D department already mention their plans to make it available in ZERO, full electric plug-in drive, in near future. Also, the 2-deck version is foreseen to come to market soon.
Keestrack’s B5, available in 3-drive versions: conventional diesel/hydraulic, hybrid plug-in and ZERO full electric-drive, is a compact heavy duty jaw crusher used for primary crushing in quarrying and mining applications. The hopper (5 m³) with heavy duty folding hopper walls with hydraulic locking system, is easy to load by excavator and wheel loader.
The vibrating feeder (2 300 x 1 000 mm) automatically adjusts the feeding material to the crusher to ensure the load capacity of the jaw crusher is optimal (80%). The long independent 2-deck pre-screen (2 300 x 1 000 mm) ensures a high crushing capacity while reducing wear of the crusher. The pre-screened fraction(s) can go through the crusher bypass or can be separately stockpiled by the optional side conveyor.
The jaw crusher has a feed opening of 1 110 x 750 mm and a feed size up to 600 mm. The stroke of the swing jaw can be adjusted for hard stone or recycling applications. To remove blockages the jaw movement is reversed.
The Closed Side Setting (CSS) is from 45 to 180 mm, even on worn jaws. The hydraulic gap settings can be changed via a wedge system. During operation the automatic wear recovery is active every 50 working hours, which guarantees a consistent quality of your end-product. The wear recovery can also be set manually, if needed.
Maintenance and repairs are facilitated by the design of the B5 through accessible walkways and doors and panels on all sides of the machine. Also, the hydraulic sliding frame ensures good service access under the feeder and scalping unit. The jaw crusher has three-piece cheek plates which make replacements easier. Replacement of the jaws is fairly simple due to the easy accessible jaw plate top locking system.
The B5 is equipped with a drop off engine/gen-set compartment like many other Keestrack crushers. The engine can be placed besides the machine in less dusty and vibrant conditions. Maintenance is much easier when having the compartment placed at ground level.
