Sources: Liebherr-Mischtechnik GmbH, Designwerk Products AG, Germany; CP staff
Germany’s Liebherr and Designwerk have developed the first fully electric concrete mixer trucks with 10- or 12-m³ drums on a five-axle chassis. The models are scheduled to premier later this year in Holcim and KIBAG fleets in Switzerland, where five-axle mixers with 40-tonne GVW are legal.
The ETM 1005 and 1205 truck mixers bear on a Designworks Futuricum chassis. With equivalent 680 hp, they can transport large quantities of concrete quietly and reliably without diesel exhaust emissions. An all-electric solution is particularly well suited for truck mixers, Liebherr notes: Vehicles return again and again to power infrastructure at the ready mixed plant, with battery charging typically an overnight process.
The electrified Generation 05 mixer body boasts a low net weight combined with optimal transport volume; long service life thanks to special wear-resistant steel construction; and, ergonomic design around the operation system and access points. A compact electric drive is flanged directly to the mixer drum; its high efficiency ensures that power consumption for relieving the traction battery remains low. Developed by Liebherr and ZF, the drive combines an efficient, low-maintenance electric motor and mixer gearbox package. It operates free of hydraulic equipment—no hose connections nor pump, no leakage risk.
Designwerk engineers characterize the ETM 1005/1205 electric motors as “real power houses. The torque combined with high horsepower provide excellent performance and a high degree of comfort.” All subassemblies, chassis and mixer bodies are optimally matched to each other by Liebherr and Futuricum, while weight distribution across the axles is ideal for driving characteristics. — www.liebherr.com; www.futuricum.com/en