Liebherr presents at the 2015 Intermat the PR 746 with an operating weight of around 30 tonnes. A concept designed for increased efficiency and for a reduction in fuel consumption and CO2 emissions

The Generation 6 Liebherr crawler tractors feature a newly developed, electronically controlled drive management with integrated ECO function. This enables the driver to choose between high performance and maximum economy. Compared with the previous generation, the ECO control system ensures more efficient operation of the travel drive for light to medium-heavy operations.

The modern design of the new Generation 6 crawler tractors, with falling edges on all sides and uninterrupted panoramic glass pane, offers the driver an optimal all-round view of the terrain as well as the blade and rear ripper. The view over the engine cover is not hindered by the exhaust system and rams as these have been positioned behind the A-pillar. A good all-round view promotes particularly efficient work and increases safety in daily use.

The driver cab has been newly designed from scratch: The new drive controls can be moved longitudinally to the most ergonomic position for the driver and, with the new T-shape, allow more ergonomic handling and thereby more comfort. The desired travelling speed range can be preselected directly on the joystick. In this way, control of the tractor can be apportioned precisely, especially at low speed. Driver detection takes place automatically by means of the integrated seat contact switch without a safety lever having to be actuated.

Technical data

Engine output 185 kw / 252 PS
Operating weight 28 – 31 t
Blade capacity 6 m³ - 7,2 m³
Travel speed 0 – 11 km/h

A multiple number of blades and rear attachments with Liebherr quality guarantee high productivity, flexibility and ideal adaptability for every application.

The Generation 6 Liebherr crawler tractors feature a newly developed, electronically controlled drive management with integrated ECO function. This enables the driver to choose between high performance and maximum economy. Compared with the previous generation, the ECO control system ensures more efficient operation of the travel drive for light to medium-heavy operations.

The modern design of the new Generation 6 crawler tractors, with falling edges on all sides and uninterrupted panoramic glass pane, offers the driver an optimal all-round view of the terrain as well as the blade and rear ripper. The view over the engine cover is not hindered by the exhaust system and rams as these have been positioned behind the A-pillar. A good all-round view promotes particularly efficient work and increases safety in daily use.

The driver cab has been newly designed from scratch: The new drive controls can be moved longitudinally to the most ergonomic position for the driver and, with the new T-shape, allow more ergonomic handling and thereby more comfort. The desired travelling speed range can be preselected directly on the joystick. In this way, control of the tractor can be apportioned precisely, especially at low speed. Driver detection takes place automatically by means of the integrated seat contact switch without a safety lever having to be actuated.

Centralised servicing points, wide-opening access flaps and engine compartment doors, a driver cab that tilts as standard and fans that fold out for cleaning (optional on engine side) facilitate perfect service access and simplify the maintenance process. The replacement intervals for the hydraulic fluid on new models can be up to 8,000 operating hours, depending on deployment and with regular quality checks.

The running gear of both crawler tractors has been completely re-developed. The considerably larger diameter of the split sprocket wheel with more teeth in engagement extends the service life of the bushes and sprockets.

Maximum cooling capacity

The unique double cooling system of the PR 746 with hinged fan for best cleaning ensures a demand-actuated, optimized cooling of any operating sector. The laminar air streaming reduces the wear of the cooler therefore increases the service life.

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