PAUL Nutzfahrzeuge has successfully converted a four-axle dumper chassis to a seven-axle chassis for the Italian concrete equipment manufacturer. Thanks to five steered axles and a turning circle of about 33 m, the heavy-duty giant, with a permissible gross vehicle weight of 75 t can maneuver easily in confined spaces. The chassis will be used as the carrier vehicle for the new Cifa K80H concrete pump from the Carbotech series, a world first with the longest boom available in Europe. The comprehensive design know-how of ensures reliable transportation and operation of the new Carbotech concrete pump, the 80m length of which is divided into seven folding sections. Completely new: The uppermost four elements are manufactured from a strong yet weight-reducing carbon-fiber mixture. The chassis guarantees the required stability in its prime field of use, the building construction and civil engineering sector. Three additional axles for heavy-duty use extension of the wheelbase to 7400 mm was accomplished at Paul by installing a third steered axle with air suspension at the front as well as two liftable steered trailing axles at the rear of the vehicle. The third front axle is a standard Mercedes Benz product and is steered by means of a mechanical connection to the first and second front axles. The technically permitted axle load is thus distributed over three steered front axles with an axle load of 9 t each. In addition, there are two rigid rear axles with an axle load of 13 t each and the two steered trailing axles with an axle load of 12 t each. The trailing axles manufactured by BPW are steered electrohydraulically as a function of the front axle steering angle as well as the travel speed. The lift mechanism is activated automatically as soon as the signal to extend the support legs is generated. The engine output is transmitted to axles 1, 4 and 5. The tire size used on each front axle is 385/65 R 22.5. The rigid rear axles feature dual tires of size 315/80 R 22.5.