On the Road in Munich-West

Speed, mobility, flexibility, and performance – the mobile concrete mixing plant M 3.0 from SCHWING-Stetter promises to meet essential criteria for efficient concrete production. Under ideal conditions, the setup and commissioning of such a plant can be completed within 72 hours – thanks to preassembled Plug & Play components and factory pre-installations.

Monday morning in Memmingen, Bavaria. The heavy transport trucks at the Stetter plant site are loaded and ready to transfer the M 3.0 mixing plant to the west of Munich.
On this rainy morning, the main part of the mixing tower – with its 3m³ twin-shaft mixer as the heart of the system – and the base module of the row-type silo for receiving aggregates, each weighing over 25 tons, are being dispatched from the factory. Upon arrival at the site, a heavy-duty crane is already in place to unload the vehicles.
The orchestration of the setup begins.
“Usually, space for mobile plants is tight; customers rarely have much room. Here, it’s even smaller than usual. We don’t even have 1,500 square meters to set up this plant. And this plant is quite something,” explains Patrick Grassinger, Mechanical Supervisor, describing the challenge of the upcoming days.
Various components such as mobile concrete silo foundations that complement the previously completed groundwork at the site have already arrived. The area for the plant was compacted and concreted after a suitability check by the operator. The ground conditions play a decisive role in site selection.
The M 3.0 already shows its first advantage with the large support areas of the mobile foundations for the mixing plant, silos, and row-type dosing unit. Thus, the characteristic surface pressure of 250 kN/m² is comparatively low.

Assembly of the Base Module and Row Silo

The base module is lifted by the crane and guided into place by supervisors Patrick Grassinger and Alexander Tolksdorf. Next comes the row silo, which is connected directly to the mixing plant. The heavy transport vehicles make room for the silo suppliers, whose five units are also temporarily stored on site. The crane erects the mixing tower, tilting it roughly 90° into the vertical position.
The team, including the supervisors and their colleagues, secures the connection to the row silo and folds out the support legs of the mixing tower.
“We usually start with the base unit, the mixing tower. From there, we assign the binder silos. Using a special measuring system – a template – we can then align the silos precisely,” explains Herbert Stiegeler, who oversees the setup on site. The project manager for Stetter mixing plant sales highlights the modular flexibility as a key advantage:
“We have over 30 standard variants of this plant in use – this one here is variant 31 and exciting for several reasons. A small site, special equipment like CO₂ cooling in one of the five binder silos for specialty concrete, a new customer. But we found the solutions.”

The Munich plant is already equipped with key performance features: the Stetter twin-shaft mixer DW 3.0 B including high-pressure cleaning, a 4-compartment row-type silo with integrated mobile foundation, Plug & Play connections, and optionally available side panels for the ramp. These features save transport costs and time, accelerate the setup process, and shorten the commissioning period.

Plug & Play to Operation

“With these plants, we are also so fast due to the modular design because we only have to bolt the essential components: the supports of the mixing tower, the sidewalls of the row silo, the binder silos on the mobile concrete foundations,” explains Alexander Tolksdorf, Electrical Supervisor, about the advantages. In his area of responsibility, it’s similar:
“The fully preassembled and factory-tested electronics are simply connected using Plug & Play – and then we can already operate the plant.”
Ideally, and depending on the plant type, the number of components, and an optimized site, a mixing plant can start operation after just a few days, confirm the Stetter experts on site.
“We advertise a 72-hour setup time, which we can achieve under the mentioned conditions. This plant here is more complex, but the basic principle works here as expected,” says Patrick Grassinger, describing the multi-day setup.

Spacious Platforms for Maintenance

The setup of the mixing plant in Munich-West is progressing, with some tasks being carried out in parallel. The binder silos were placed with millimeter precision using the template, the sidewalls of the row silo were mounted and bolted, and the mixer and truck platform is receiving its cladding.
“With the M 3.0, these components have significantly larger platforms compared to other mobile mixing plants. This enables an almost unrestricted 360° walkaround of the compactly built twin-shaft mixer DW 3.0 B and provides exceptional maintenance accessibility,” says Herbert Stiegeler.
Thus, customers receive a generous product that doesn’t feel like a mobile plant, but rather like a stationary horizontal installation – combined with rapid assembly.

Connecting the screws of the five binder silos is also progressing with the required precision. Only if the silos are placed to the centimeter and aligned at the correct angle to the mixing plant will they fit precisely.
“Our customers order between one and six silos – each option demands the same precision. We have little tolerance here, as we need the heavy-duty crane both for rough positioning and for precise alignment. And the crane won’t stay forever,” says Patrick Grassinger about the setup.

By the end of the week, the plant is fully operational and ready for service. The operator's container is wired, and the optional mixing plant control is functional. The Stetter work is completed. The truck mixers are lining up outside the site.
“We try to integrate every customer request, no matter how unusual. Whether it’s adding a fiber scale for steel or plastic, or any kind of additives – be it five, ten, or fifteen types – everything is possible with this plant,” says Herbert Stiegeler.
The customer still has several tasks, besides purchasing and preparing the site.
“We offer full service – from consultation and planning to production, transport, and coordination of external trades. Having everything from one source significantly shortens the setup time. The customer is responsible for the site and required connections such as water and operational power.”
And once everything flows as planned – concrete flows too, he adds.

Also good to know: The M 3.0 mobile mixing plant not only offers rapid setup – it can also be dismantled just as quickly. Components are easily disassembled and prepared for the next location.