Atlas Weyhausen is presenting its first electric wheel loader, the AR 4.2e, at bauma 2022. The wheel loader is in the 5.5-ton class and has a standard bucket capacity of 1.0 m³. The 96-volt battery capacity is 60.8 Kwh, with 84.6 Kwh available as an option. The designers have opted for a lithium iron phosphate LIFEPO battery, which is hardly flammable. The aim is to guarantee an operating time of 8 hours.
The battery service life is designed for 3000 charging cycles, which corresponds to 3000 working days in around 15 years. Due to the battery weight of 1.2 t and the corresponding positioning, no increased counterweight is required for optimum work.
The machine is equipped with three electric motors, one for the working hydraulics and two for the travel drive, as well as a new gearbox. Each drive motor has a rated power of 11kW @ 170A and a peak power of 34kW @ 600A. The work motor has a rated power of 17kW @ 280A and a peak power of 37kW @ 600A.
The associated tractive force is 47 kilonewtons. Cooling is provided by an oil-water combination for the drive train and the working hydraulics. The driving speed is 20 km/h.
Proven technology has been adopted from the forklift sector, which includes fully electronic working hydraulics with newly developed proportionally controlled working valves. Recuperation is carried out by the travel drive. The electric motor has been positioned in place of the hydraulic motor.
The design of the AR 4.2e is such that the features are transferable to all model sizes. The aim is therefore to create an independent e-model series.