Top performer in raw materials and recycling
In addition to a wide range of activities in the fields of earthworks, civil engineering, road construction and demolition, the production and supply of high-quality rock raw materials and the professional recycling and disposal of construction waste have traditionally been the main activities of the German-Austrian Moosleitner Group. Founded over 70 years ago, the company is now managed by Matthias and Martina Moosleitner and Mathias Christian Moosleitner in the 2nd and 3rd generation of owners. More than 200 employees currently work for Moosleitner in southern Bavaria, the greater Salzburg area and neighbouring Austrian states.
Two gravel pits, a total of 3 concrete plants as well as other quarries, recycling and landfill sites operated by the company itself or with partners form the Group’s raw materials, building materials and environmental division in both countries. In addition to application-specific stationary processing technology, Moosleitner also maintains a fleet of mobile crushing and screening plants, which operate nationwide in its own plants and across the country on major infrastructure construction and demolition projects. Until recently, the company mainly relied on smaller track-mounted impact and jaw crushers - it was only at the beginning of last year that the company invested in modern, transport-optimised large crushers with an operating weight of over 40 tonnes after a lengthy evaluation process.
Think bigger
It all started last spring with the diesel-electric impact crusher SBM REMAX 400, supplied and serviced by the Austrian dealer mineraltech – Ing. Erwin Hofstätter. The plant, which weighs around 47.0 tonnes including the single-deck secondary screen, is currently being used primarily at the Moosleitner gravel plant in Saaldorf for the production of certified wall gravel aggregates 0/16, 0/22, 0/32, 0/63 from feed material 0/400. With its class-leading “1300” impact crusher (inlet: 1260 x 800 mm) for feed sizes up to 1000 mm and a variety of relevant equipment options (magnetic separator, air separator, etc.), the REMAX 400 is also suitable for highly productive applications in the recycling of building rubble, reclaimed asphalt or concrete. Even then, generously dimensioned feeds and transfers, large-volume stockpile conveyors and the intelligent SBM CRUSH CONTROL crusher control system with multi-function remote control as standard ensure economical one-man operation from the excavator or wheel loader, even under full load.
Like all SBM mobile crushers, the REMAX 400 also has a fully developed hybrid drive with diesel/generator unit (300 kVa), electric crusher motor (160 kW) and largely electrified drives for conveyor systems and necessary hydraulic units. The entire plant can be operated fully electrically from the mains or external power sources via the optional plug-in connection, which further increases the economic efficiency of operation. But even in diesel-electric operation, the unique SBM hybrid concept proves its high efficiency: at Moosleitner in Saaldorf, the REMAX 400 achieves hourly outputs of 250 to 380 t/h with a documented diesel consumption of 26 to 29 l/h, depending on the end product. By comparison, the diesel-hydraulic 35-tonne crusher previously used at the same location consumed an average of 35 to 37 l/h and this at less than half the production capacity of 140 to 150 t/h.
Universally applicable high-performance crusher
Moosleitner took over the mobile jaw crusher JAWMAX 450 in February of this year, not least because of the good experience with the performance and availability of the REMAX 400 and the service quality of SBM partner mineraltech – Ing. Erwin Hofstätter. The large crusher, which weighs around 40 tonnes and is particularly mobile thanks to one-piece low-bed transport, is used for on-site recycling on its own and customer construction sites and as a primary crusher solution for hard and loose rock that is available at short notice.
Another important argument in favour of the JAWMAX 450 was its powerful crushing technology, which offers a high crushing force for material of up to 400 Brinell, a large infeed of 1100 x 700 mm for piece sizes of up to 1000 mm and a crushing gap adjustment under load (40 to 160 mm) as well as full flexibility in processing even difficult materials. Various sensors, automatic foreign object detection and overload protection ensure high availability. The crusher performance is further optimised by the active double-deck circular vibrating pre-screen below the 7 m³ feed hopper: a manually operated triple flap regulates the discharge/bypass of the screened fine fractions, thus reducing crusher wear and increasing production output thanks to a significantly more homogeneous crushed material. An almost identical pre-screening solution is also available for the REMAX 400 – then as the REMAX 450 model.
The JAWMAX 450 also comes with a diesel-electric hybrid drive (200 kVA) including plug-in mains option, an electrically driven crusher (110 kW) and the SBM CRUSH CONTROL control system, which also actively supports the machine operator during assembly and dismantling. In addition to a high hourly output and good mobility on site, it is the minimal set-up times that make the JAWMAX 450 so interesting for Moosleitner, even for short-term construction site operations with masses of 15 000 t or more.
Shortly after taking over, however, the new large jaw crusher had to prove itself in a project of a completely different magnitude: A total of 180 000 t of demolished concrete and excavated rock material was produced during the general renovation of an almost 13 km long section of the A10 Tauern motorway with the Ofenauer and Hiefler tunnels and the Werfen tunnel chain, for which Moosleitner will carry out the necessary renovation and dismantling work on a total of 10 tunnel tubes and nine bridge structures by mid-2025. Around 80 % of the material will be recycled on site. At the central recycling centre, the JAWMAX 450 impressed with an output of 350 to 420 t/h with an average diesel consumption of 26 to 29 l/h, depending on the source material.
