Liebherr’s new generation 8 crawler tractors

Liebherr’s new generation 8 crawler tractors - the PR 736 G8 – has an operating weight of up to 25,500 kg. Various blade versions (straight, semi-U and six-point blade) with capacities from 4.1 to 5.56 cu m as well as many rear equipment options are available to cover a large application range.

The PR 736 G8 is powered by a new Liebherr diesel engine belonging to the Evo series (160 kW / 217 bhp), which meets Stage V emission standards. Alternatively customers in low regulated markets have other engine versions and equipment levels to choose from. 

The operator’s cabin has been improved to make it more ergonomic and productive. A grab handle with integrated joystick for the rear ripper is used to guarantee stability when driving on uneven terrain. Standard climate control keeps a constant cabin temperature even in adverse weather conditions. The large 9-in display is the new information and control station for all relevant operating data.

The Liebherr Operator Assistance Systems (OAS) on the generation 8 crawler tractors provide three assistance levels: Free Grade, for active blade stabilisation during fine grading; Definition Grade, for automatic blade positioning when creating 2D grades; and 3D Grade, as an optional GPS machine control system to model complex terrain shapes. The Liebherr Active Sensor Control to stabilise all blade axes is fitted as standard. Two independent, permanently mounted integrated sensor circuits (gyroscopic and inertia sensors) enable high grading speeds and perfect fine grading at all times.

The electronically pilot controlled work hydraulics allow for swift work cycles at high precision. It can be optimally adjusted to the operating conditions and the operator’s requirements. Apart from the hydrostatic drive system, the proactive performance adjustment system and the Eco mode have also been adopted from the generation 6 crawler tractors. The new six-point blade with increased capacity (up to 4.84 cu m) improves production output and facilitates grading with its optimised linkage geometry. 

Many wide-opening hatches, central maintenance points and the tilting cabin facilitate simple daily maintenance and access. Long service intervals using Liebherr lubricants significantly contribute to the machines’ low operating costs. The standard LiDAT fleet management system delivers information on localisation as well as the machine’s operation, such as its position, operating and usage duration, fuel consumption and service interval information.