~ SBM relies on WEG motion drives in its mobile concrete mixing plants ~
SBM Mineral Processing (SBM), a member of the international MFL Group, which is headquartered in Oberweis, Austria, facilitates economical concrete production and processing. The company creates mobile concrete mixing plants and consistently relies on drive systems from WEG, the motors and drives specialist, to drive a variety of conveyor belts in its mobile mixing plants. This includes the supermobile EUROMIX 400C plant.
SBM specialises in the development and production of concrete mixing plants, and in processing and conveying systems for the natural stone and recycling industries. The Austrian company is a full-service supplier in the ready-mixed and prefab concrete sector and has both mobile and stationary concrete mixing plants in its product line.
The supermobile EUROMIX 400C unit is one of the company’s special solutions and boasts its own electrical generator for fully autonomous operation. It is compact, powerful and has approval to be transported via the public highway.
The Dutch recycling company Van Gansewinkel uses the EUROMIX 400C to process materials such as excavated soil, bottom ash, sludge and sieved sand into concrete suitable for long-term storage.
The plant operates in continuous operation with an effective production capacity of more than 400 tonnes concrete per hour. For the 400C model as for other EUROMIX plants, SBM relies on geared motors from WEG for the conveyor belt drives.
Hard work in construction
Several conveyor belts with reliable drive systems are necessary for smooth operation of the concrete mixing plant. The aggregate is weighed and dispensed according to the desired concrete grade and fed to the steep-angle conveyor belt, which in turn transports the material to the double-shaft mixer.
Cement, water and the necessary additives are fed directly into the mixer. The resulting concrete can be taken away by lorry or by ready-mix concrete trucks. Extreme operating and environmental conditions, high availability and optimal plant use impose high demands on the drive systems. The geared motors must be protected against humidity as well as extreme dust loading.
Along with robustness, reliability is especially crucial for job-site operation. Particularly for motorway or tunnel construction, a continuous supply of concrete is essential. The compact design and high mobility of the EUROMIX 400C also requires low-profile gear units with flexible mounting options.
Compact powerhouses
The drive technology from WEG used in the SBM mixing plants includes various types of gear units from the K Series with torque ratings from 2,700 to 20,000 Newton meters (Nm). The EUROMIX 400C has a pair of helical bevel geared motors, type KUA 85A 70 134M4, rated at 7.5 kilowatts (kW) for the two dispensing belts and an angle parallel shaft geared motor, type CSA 80A 70 161M4, rated at 11 kW for the steep-angle conveyor belt.
The compact, structurally optimised housing of the helical bevel geared motors has efficiency class IE2, speed 22 revolutions per minute (rpm) at 50 Hertz (Hz), torque 3,274 Nm, controlled by frequency inverters and housing in UNIBLOCK design provide flexible mounting options.
What’s more, these motors come with the option of humidity protection, condensation bores, temperature control using positive temperature coefficient (PTC) technology, forced ventilation and protective covers.
The K series gear units offer rapid, adaptable solutions to tailor to specific customer needs. Collaborating with SBM, WEG customised drives to suit environmental conditions and individual requirements for the EUROMIX 400C.
Specifically designed for this application, the helical bevel and angle parallel shaft geared motors feature special functions like humidity protection, condensation bores, PTC temperature control, forced ventilation and protective covers.
In addition, the angle parallel shaft geared motor includes a modular backstop for added protection, preventing reverse motion of the steep-angle conveyor belt during power outages.
Versatile, compact and reliable
The reliability and high quality of the geared motors from WEG reinforce the confidence of SBM‘s customers in the availability and productivity of the SBM concrete mixing plants.
Low maintenance, robustness and long life are especially crucial attributes of drives for mobile use in job-site conveyor systems. The combination of high operational reliability and outstanding versatility makes the modular drives units from Watt Drive an optimal solution for flexible, demanding applications like the EUROMIX 400C.
There’s a good reason why SBM relies on gear systems from WEG for all EUROMIX plants. The combination of high operational reliability and excellent versatility makes the modular drives units from WEG an optimal solution for flexible, demanding applications such as the EUROMIX 400C.
Current EUROMIX references
A current project employing the combination of SBM concrete mixing plants and WEG technology is the 4.4-km Götschka Tunnel on the S10 motorway in Austria, which forms the traffic corridor between Linz and Prague. Here, three mobile EUROMIX plants, types 2000, 3000 and 4000, produced a total output of 300,000 cubic metres (m3) of concrete between spring 2012 and 2015.
The plants operate around the clock regardless of season and weather, and thanks to its high-quality configuration – including K Series gear units from WEG – they fulfil the demanding Austrian specifications for tunnel construction.
Notably, WEG and SBM also partnered in the construction of the S10 motorway in Austria, where a EUROMIX 4000 with conveyor belts powered by reliable WEG motion drive technology produced concrete for the motorway substructure.
For more information on WEGmotion Drives, visit its website.
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