
Liebherr has been producing truck mixers for concrete transport for 50 years. The product is undergoing continuous development to deliver further customer advantages, and the fifth generation of truck mixer is now in production.
The first truck mixer delivered by Liebherr was mounted on a Henschel HS22 chassis in 1967. The type HTM 601 version with 6-cubic-meter nominal volume still had a separate engine because the majority of chassis were not equipped with a suitable power take-off. The designation HTM 601 is composed as follows: H stands for hydraulic equipment, T for transport, M for mixer, 6 refers to the nominal volume and 01 stands for generation 01.
The truck mixers have steadily undergone further development based on customer input. For example, the drum volume was increased, which meant that the truck chassis had to be stronger. Following the addition of the two- and three-axle chassis came the first semitrailer. Only in the 90s was it possible, thanks to new regulations, to build on a rigid four-axle chassis, which resulted in greater payload advantages. The 9-cubic-meter version on four axles has since become the most commonly sold type.
Restored HTM 702 from 1977 on a Magirus chassis
Liebherr produces truck mixers for Europe at the Bad Schussenried site (Germany), and operates production sites in China, Thailand, Brazil and Saudi Arabia for other markets. Together, the sites have produced around 92,000 truck mixers to date.