The Poznań University of Technology in Poland has announced the completion of the design and technical documentation for the 37TN bogie, marking a significant breakthrough in the country’s heavy-duty freight rail equipment sector. The project, which has received state subsidies since 2023, will fill a technological gap in Poland’s railway industry.
The 37TN bogie is specifically designed for six-axle freight wagons with an axle load of no more than 22.5 tons. Its unique axle configuration significantly enhances the wagon’s load-bearing and transport capacity, making it suitable for transporting a variety of large and overweight cargoes, including energy storage equipment, industrial machinery, rails, steel structures, and timber, as well as military equipment weighing over 60 tons.
In terms of performance, the 37TN bogie adopts a lightweight yet high-strength design, balancing manufacturing efficiency and operational reliability. Wagons equipped with this bogie can achieve maximum operating speeds of 100 km/h (when fully loaded) and 120 km/h (when empty), fully complying with the European Technical Specifications for Interoperability (TSI). Although no orders have been placed yet, mass production preparation and certification are expected to take no more than 18 months and can be undertaken by either private enterprises or state-owned rolling stock manufacturers. The introduction of this bogie will also mark the end of Poland’s history of not producing six-axle freight wagons.
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