New mobile crushing and screening equipment at bauma 2019

Published 25/3, 2019 at 11:38

There are quite a number of new machinery developments for mobile crushing or screening of demolition debris being released this spring. All of these will be exhibited at bauma in Munich. Vito Hermansson reports on some of the latest developments.


Keestrack will display nine tracked processing plants for minerals, recycling and quarrying, with the company’s leitmotif being cost effective hybrids and plug in electrification of plant drives. Amongst these are a track mounted jaw, impactor and cone crushers, as well as diesel electric full hybrid plug in systems.

The jaw crusher Keestrack B7e uses the single toggle jaw crusher CJ 412 with a 1200mm x 830mm inlet for feed sizes up to 70mm and a wide, hydraulically adjustable CSS range of 75mm-250mm. The crusher is driven by a 132kW electric motor, with another 55kW electric motor powering the hydraulic system for the tracks, lifting cylinders, vibrating feeder with two deck pre-screening and conveyors. The entire diesel electric power is delivered by an on board Volvo diesel, optional 273kW (EU IIIa)/285kW (EU IV), and on board 330kVA generator. The plant has a total weight of just under 69t (with options). By detaching the 6m³ feeder unit including pre-screen, the weight drops below 60t.

The full hybrid cone crusher Keestrack H6e has a maximum feed size of 215mm, variable crushing chamber configurations and stroke settings (CSS: 6mm-44mm) and a specially adapted Keestrack KT-H6 (based on proven Sandvik technology) and processes up to 400 t/h of various materials. The e-motors for the crusher drive and plant hydraulics (220kW / 2 x 30kW) and all other directly electric driven components are powered by a detachable diesel / generator module (345kW / 500kVA) or plug in via the mains or an external gen set. The large cone has a total weight of 62t with all options, 51.5t without final screen. The impact crusher R6e is compact, mobile and has a double pre-screen and double deck post screen module, including oversize recirculation. Despite extensive electrification (including the 970mm x 1300mm crusher at 250kW), a hydraulic system (2 x 55kW), conveyor drives and ancillary units, the 62t plant can be disassembled with the optional dolly system.

Keestrack will also display its fully hybrid impact crusher R3e with single deck post screen and oversize recirculation (total weight 32t), introduced last year. Also on show will be the jaw crusher Keestrack B3e with a new independent pre-screen. The electric driven double deck unit (1.6 m² and 1.2m²) optimises efficiency and wear of the 1000mm x 600mm jaw crusher, and is said by the company to be the largest unit within the 30t class. The electrical equipment of the predominantly diesel hydraulically driven plant includes a 42.5kVA generator for all conveyor drives and ancillaries, and 16A plug out connection for downstream screens or stackers.

New to the company’s ‘e-programme’ is the scalper Keestrack K6e with 8m³ standard feeder, 4500mm x 1800mm double deck screen box (2 x 8.1m²) enabling the nearly 30t plant to produce three fractions at 600t/h. It can be adapted to process a wide range of materials and applications with a variety of screen media and additional equipment. A full hybrid screen solution for economical semi stationary operation from the mains is the Keestrack K5e ‘Flip Flow’ (approximately 29.5t). The specially adapted ‘Bivitec’ technology in the large double deck screen box provides a wide range of applications for economic recycling of residual materials (glass, wood, slag, etc.) or the processing of difficult materials with high basic moisture content. The flexible screening equipment also allows the efficient and economical production of minimum grain sizes of (minus 2mm), the handling of hot materials (e.g. slag) or generally the production of large quantities of mineral products (up to 450t/h).

Keestack’s brand new emission free stockpilers will also be presented in Munich. The semi mobile electric feeder / stacker S1e is installed on a height adjustable pedestal with lifting and 180° swivel hydraulics. The light 10.2m belt feeder (5.45t) conveys up to 280t/h of sand or gravel, (max. size 200mm) and creates ‘kidney’ shaped stockpiles up to 2,900t. Keestrack’s S5e ‘Solar’, a direct solar driven processing plant, has photovoltaic modules mounted above the 23m long conveyor feed and a 23kW battery installed in the chassis. The battery powers all electric driving, lifting and conveying functions. In case of bad weather or intensive continuous operation, the system can be powered or recharged via available external sources, such as upstream diesel electric crushers and screens or via a mains plug in.  Keestrack will be located at the outdoor area North, stand FN1017/1, at bauma 2019.



Arjes will present it Impaktor 250 EVO shredder at the Munich show. The unit combines new track technology and a hook lift featuring a quick change shaft system. It includes a new control system as well as a new shaft design that expands the range of applications of the shredder. Arjes’ vision is that the Impaktor will not only be a machine for processing minerals, but also for shredding waste, wood, scrap wood and tyres, to name but a few. The shredder comes with an extended warranty and cost optimised wear packages, as well as a reduced price. Additionally, Arjes will display its larger brother, the VZ 950 Titan shredder. Arjes’ shredders will be located at the outdoor area North 1017/9 at bauma 2019.


Rubble Master

The Austrian manufacturer Rubble Master will present to bauma visitors the ongoing development of its RM GO! brand, the RM GO! Next. In addition to a fully integrated hybrid drive for crushers and numerous digital features, RM will also be launching a first for mobile screens.

The new crusher RM 120GO! has a fully integrated hybrid drive and combines the advantages of diesel driven and electric powered crushers without increasing the size of the machine. The base frame has been slightly modified to make room for the electric motor and the weight of the crusher increases by 500kg with the electric motor. The RM 120GO! also features a more powerful generator and a 50% larger diesel tank.

With RM GO! Next, the crushers and screens communicate with the user, either directly using light signals or via the RM GO! Smart app. The RM crusher now has a new appearance based on a lighting concept with the machine communicating with the operator by emitting light signals, meaning that the operator is able to remain outside the machine’s danger area while its processing. Additionally, details of the performance of the RM crusher can be read in real time, using the RM GO! Smart app. Throughput data from several weighing points can also be integrated using belt scales and these can be reset directly using the app. The total throughput, and proportion of the screened aggregate serve as an indicator as to whether the crusher is operating at full capacity, with daily reports and error code routines also included as part of the digital service.

Lastly, Rubble Master will present an innovative screening system, exclusively at bauma. This new screening system, which Rubble Master describes as ‘an absolute world first in the screening sector’, has been developed together with the Northern Irish company Maximus Crushing and Screening Technology, a company owned by Rubble Master since 2018. Visitors are invited to meet Rubble Master in hall B2 and booth 236.



Metso’s Lokotrack Urban LT106 has been developed specifically for crushing in densely populated environments. It delivers up to 60% better noise protection, as well as reduced dust emissions, making it easier for users to obtain an environmental permit. The Lokotrack Urban series was developed to enable the running of crushing operations in the most heavily regulated urban locations, with the obtaining of environmental permits often a challenge when crushing in these densely populated areas. The new Lokotrack Urban series however makes operations much easier, minimising the impact on people living and working around sites. 

Environmental permits are usually based on the noise level caused by the crushing operations, with noise levels of 85dB being the most commonly defined limit that requires ear protection, with even lower levels being disturbing for people living around crushing sites. With the Lokotrack Urban LT106 patent pending solution, the distance drops by approximately 60%, from 23m -25m to 9m-11m. Outside a protected area, this distance can be even more significant, making a big difference for those experiencing crushing operations. In addition to low noise emissions, the Lokotrack Urban series includes a very advanced dust suppression system. The dust is funnelled to stay inside the mobile crushing plant with a high pressure water spraying system absorbing dust particles from the air. The Lokotrack Urban series includes crushing plants that are easy to move, with environmental features integrated into the mobile plant, thereby requiring no special attention or maintenance. This enables recycling in an urban environment, with aggregates often being able to be used in the same location with hauling away often being avoided completely. 

The Lokotrack LT106 itself is a primary crushing plant for recycling or processing rock based material. It can be used as the first unit in a multistage crushing process or a standalone unit in reducing applications. Material is fed onto the feeder by an excavator or wheel loader. The two stage scalping section removes the fines, which can be guided into the main conveyor or side conveyor. Output material size is controlled by the crusher setting, with the crusher being hydraulic driven to ensure trouble free operation.



Rockster will present R1100DS, its most powerful mobile impact crusher with emissions technology. The machine combines the Rockster developed, patented systems ‘Duplex’ and double functional return / stockpile belt. As of this year, it will also be equipped with a Cat C9.3B EUR5 engine. The R1100DS will be displayed in the open area in front of the B2 hall / gate 7 (booth no. 12B/2) at bauma in Munich, Germany.

Another new development, also presented for the first time at bauma, is a ‘Machine Monitoring System’ (MMS), which will be available for all mobile crushers as of 2019. Rockster customers can query anytime, from anywhere, via smartphone, tablet or notebook the relevant or selected information about their machine. The MMS also offers the possibility of remote maintenance which minimises any possible downtime. It is controlled by a multifunction colour display with scratch resistant touch user interface.

Rockster’s mobile 2 deck scalping screen RSS410 will also be displayed at bauma. It offers what the company says is the longest screenbox in the compact screening segment, and can be used either as an individual machine, or to produce 3 final grain sizes. It can be utilised as a pre-screen before the crusher for the production of 2 additional defined grains, or as a final screening unit after the crusher to separate the crushed product into 3 final grains. In addition to the efficient separation of natural stone and building materials, the RSS410 can be used for separation of coal, metal and topsoil. Beside various scalping screens, Rockster also has in its product line tracked mobile 2 or 3 deck finishing screens and track mounted or wheeled trommel screens. Engines from Stage Illa to Stage V are available for these machines. The RSS410 will be exhibited at booth no. 12B/6 at bauma.

To complement the impact crusher and the scalping screen, Rockster is also exhibiting the track mounted stacker RST18 which is available in 4 different lengths, from 15m to 30m, and can be obtained with Stage Illa to Stage V engines. The use of the stacker makes it possible to increase daily production capacity while at the same time reduce material handling costs, and will be shown at booth no. 12B/2 at bauma.

Finally, visitors to bauma will have the opportunity to view the mobile impact crusher R1000S from an unusual perspective. Rockster’s stands will be located at in hall B2, booth 214 and at the outdoor area in front of hall B2 / gate 7, booth numbers 12B/2 and 12B/6 at bauma 2019.

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