At the Transport Logistic exhibition, Schaeffler unveiled a new axle-mounted generator designed for freight wagons. The first wagon equipped with this technology is operated by Ermewa, a European freight wagon leasing company.
The new generator enables autonomous control of key systems, including the wagon’s tarp and telematics. This development was first reported by the railway news outlet, Railway Supply.
The generator is built directly into the axle bearing housing. A rotor with permanent magnets is installed on the axle, while a stator—built to resist wear—is placed inside the housing cover. When the train moves, the generator produces electricity.
Power generated by the system is stored in an onboard battery. This battery is made by the Slovenian company Realtronik and is mounted on the wagon’s bogie. It supplies energy to a motorized folding tarp system developed by French firm Innovaction Technologies. A full battery charge can operate the tarp through up to 50 complete open-and-close cycles.
Schaeffler has released two versions of the generator. The basic model can generate up to 50 watts, while the more advanced version starts at 100 watts. The stronger unit can support not only tarp operation but also other systems, such as automated doors.
More Than Just Mechanics: Telematics Integration
Ermewa intends to use the generator to power more than mechanical systems. It will also support telematic sensors that monitor the condition of the wagon and its cargo. This real-time data will improve logistics efficiency and tracking accuracy.
A Step Toward Autonomous Wagon Operation
Schaeffler says the new system helps freight wagons become more energy independent. It reduces the need for external power and makes it easier to operate wagons on routes with limited infrastructure.
The project is the result of collaboration between multiple companies. By combining different technologies, Schaeffler has helped create a freight wagon that offers partial autonomous functionality. This is particularly useful for frequent or high-speed logistics operations.
Supporting the Shift to Smart Freight
By generating electricity onboard, operators can cut costs for external power installations. At the same time, they gain better cargo visibility through telematics powered by the generator.
Industry experts believe this innovation could set a new standard in freight logistics. Schaeffler’s generator brings together energy efficiency, automation, and advanced monitoring, offering a smarter solution for modern rail freight operations.
