A major milestone in heavy-duty logistics was achieved with the first deployment of the STB 320 side girder deck, developed by TII Scheuerle in collaboration with Spedition Kübler. The vehicle successfully transported a 285-tonne transformer for TransnetBW, showcasing its advanced capabilities in challenging conditions.
On 9 July 2025, the transport began at 7:00 PM near the Offenburg railway freight station. The destination: the Offenburg-Weier transformer substation, 10 km away, undergoing upgrades as part of Germany’s grid expansion. The STB 320 completed the journey in just three hours, navigating bridges, tight roundabouts, and urban traffic.
Designed specifically for transformer transport, the STB 320 combines modularity with reduced dead weight, meeting the demanding needs of infrastructure-sensitive operations. Developed closely with Kübler Spedition, the deck allows safe transport of maximum loads while maintaining flexibility and stability.
A key challenge was crossing the 80-meter-long cantilevered Kinzig Bridge. Standard vehicles would exceed the static load limits, but the STB 320’s lightweight design and adaptable axle configurations made the crossing possible—proving the system’s engineering excellence.
During coupling at the freight station, the STB 320 showed off its precision, aligning within millimetres thanks to hydraulically adjustable beams. En route, it navigated pedestrian bridges and high traffic islands with ease, using its lifting and swinging functions.
At the substation, the transformer was precisely lowered onto its foundations using the STB 320’s on-board hydraulics—no additional lifting gear needed.
This successful operation underscores how modern transport technology like the STB 320 supports the energy transition. “The STB 320 gives us flexible, low-axle-load transport options—perfect for sensitive infrastructure,” said Kübler Spedition, hailing the vehicle as a future-proof solution for transformer logistics.
