Keestrack to launch compact impact crusher at bauma

From April 7 to 13, in Munich, Germany, the focus of bauma and Keestrack is on sustainability, alternative drive systems, and providing solutions for the aggregates, recycling, and mining industry. Keestrack will launch two completely new machines at bauma.

Specifications on the fully electric and diesel/hydraulic R2 impactor

The R2, a compact track mobile impact crusher has been designed to expand Keestrack's product range of impactors. The R2 is easy to operate within city centres where high flexibility and mobility are essential. In many European cities, there is a need for pure electric plug-in construction equipment. With the ZERO drive, a fully electric plug-in drive version, without any combustion engine onboard, Keestrack provides the ideal solution. The new impactor has a capacity of up to 150 t/h.

The crusher design features are similar to the bigger R3 impactor. The hopper has an integrated vibrating feeder, pre-screen, and an asymmetric design to feed the material easily into the inlet 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 minimize 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 easily facilitates service maintenance.

The R2 impactor, fully equipped in a closed circuit with a 1200 x 3040-mm single deck after screen, magnet separator, and windsifter has a total weight under 27t and a transport length of 13,05m, making it an agile impactor. The return conveyor of the closed circuit can also swivel outside to be used as a stockpile conveyor for oversize.

The diesel/hydraulic R2 version is driven by the new DEUTZ TCD 5.2 L4 engine. 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 a ZERO drive version, which is a full electric plug-in and has no combustion engine.

The C7 3-deck high-capacity classifier

Keestrack will also introduce the brand-new high-capacity 3-deck classifier to complete the expanded range for high-capacity precision screening. The C7, with a capacity of up to 600 t/h, is equipped with a triple deck screen box of 5450 x 1800mm 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 ample 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 drives, but Keestrack's research and development department already mentioned their plans to make it available in ZERO, a fully electric plug-in drive, in the near future. 

The P3 twin shaft shredder

Keestrack, recently added the first tracked shredder, the P3, to its product range. This compact twin-shaft shredder is equipped with two heavy-duty axles that can easily be changed within an hour. In different setups, the shredder can be used for various applications such as construction waste, mineral waste, biomass, green waste, logs and roots, waste wood, industrial and household waste, plastics, light metal waste, tires, and more.

The 14,5t Keestrack P3 tracked mobile shredder features a tillable loading platform to feed the shredder. The shredder has a feed opening of 1589 x 1200 mm and a shaft diameter of 700 mm. The torque of 90,000 Nm per shaft provides 180,000 Nm of power. The shaft speeds are 45 and 25 rpm, and the rotation varies according to the program selected. The shredder features an automatic release system by reversing the direction of rotation. 

The P3 is available with options such as a magnetic separator for precious metals, a remote control, after screen, working lights, and a fuel pump.

As expected, the P3 provides easy access for service, maintenance, and repairs. The engine compartment is very accessible, with the new very efficient, powerful, and clean DEUTZ TCD 5.2 L4 engine. It applies to all EU Stage V and US EPA Tier 4 and is able to run on ecological biodiesel.

The B5 heavy-duty jaw crusher

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 has heavy-duty folding hopper walls with a hydraulic locking system, and is easy to load by excavator and wheel loader. 

The vibrating feeder automatically adjusts the feeding material to the crusher to ensure the load capacity of the jaw crusher is optimal at 80 percent. The long independent 2-deck pre-screen ensures a high crushing capacity while reducing wear on the crusher. The pre-screened fractions can go through the crusher bypass or can be separately stockpiled by the optional side conveyor. 

The jaw crusher has a feed opening of 1110 x 750mm and a feed size of up to 600mm. 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 (C.S.S.) is 45 to 180mm, 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, 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 3-piece cheek plates which make replacements easier. 

The B5 is equipped with a drop-off engine/gen-set compartment like many other Keestrack crushers. The engine can be placed beside the machine in less dusty and vibrant conditions. Maintenance is much easier when having the compartment placed at ground level.