Start of series production for electric wheel hub drives

Annina Schopen,

New drive concept for municipal vehicles

Schaeffler will be launching its efficient wheel hub drives in series production for three customers from the compact municipal vehicle segment in the coming months. Fully electrically powered, the sweepers, transporters and snow clearing vehicles are thus locally CO2-free and contribute to better air quality in cities. The special feature of the wheel hub drive is that all the components required for the drive and brakes are installed directly in the wheel rim. This saves space and makes the vehicles more agile and easier to maneuver in city traffic. The low-noise, all-electric drive ensures that work can be carried out particularly quietly in pedestrian zones, on roads and in residential areas.

© Schaeffler/F. Eppler

Jungo is one of the first companies to launch a multifunctional vehicle with a wheel hub drive from Schaeffler this year. Both partners have jointly adapted the drive to the special everyday requirements of commercial use. Thanks to the electric individual wheel drive, the machines gain in performance and safety with higher efficiency.

Cleaning roads, clearing snow, collecting garbage: The range of applications for wheel hub drives in mobile machinery is vast. With this technology, Schaeffler is tapping into a new and constantly growing market. In the future, further work vehicles for cities and municipalities, in factory and logistics yards, at ports, in large parking lots and airports are to be equipped with the wheel hub drive. The arrangement of the drive unit is remarkable: the electric motor (stator and rotor), together with the gearbox and mechanical friction brake, is housed around the wheel bearing inside the rim. This creates free space in the vehicle - for example for the battery or as additional storage space for transportation. For manufacturers, this creates new scope for the development of a wide range of mobility concepts, including rolling chassis solutions. The drive and transmission are housed in a 14-inch rim. Depending on the application, the drive power of the motor can be scaled from seven to 26 kilowatts (nominal) and reaches up to 60 kilowatts at its peak. The torque generated by the electric motor is transmitted directly to the wheel via the gearbox. As the torque and direction of rotation can be controlled individually for each wheel, the vehicles are equipped with all-wheel drive.

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