Liebherr introduces the world’s largest hydrostatic crawler dozer
Drawing on extensive practical experience with the proven PR 752 Litronic push dozer – for many years the only hydrostatically driven dozer in its class – Liebherr is moving its crawler range up a notch with the new PR 764 Litronic.
The new flagship of the Liebherr crawler tractor range works on a revolutionary drive concept. The D 9508 310-kW (422-hp) Liebherr V8 diesel engine drives the crawler by means of four variable displacement pumps, each in a closed circuit. This drive system delivers maximum pushing and ripping performance in all speed ranges. With an operating weight of up to 116,150 pounds, the PR 752 is the largest hydrostatically driven crawler in the world.
A completely redesigned operator’s cab with its characteristic sloping outer edges provides the operator all-round visibility and an outstanding view of the blade and the rear ripper.
Noise levels in the cab itself, which are already minimal thanks to the good insulation features, are reduced even further by the exceptionally low-revving 1,600-rpm engine and the demand-controlled hydrostatic cooling system.
With its stepless drive system, easily maintained travel speeds, and pulling power, the PR 764 Litronic is always capable of whatever the job demands. Whether the machine is being used for heavy ripping jobs or to transport material, the optimum drive ratio is always available. Gear changes do not interrupt the power delivery because the diesel engine runs continuously in the optimum rpm range. This reduces fuel consumption, thereby lessening the environmental impact and increasing the machine’s working life. The hydrostatic drive has a particularly low centre of gravity, which makes the machine safe to operate on very steep inclines. The machine also provides exceptional ground clearance – a crucial advantage in rocky applications. Available as an option is a pivoting track system which enables the rollers to adapt flexibly to the ground conditions. This ensures that even where the ground is hard, there is much greater transmission of the engine‘s pulling power. The elastic suspension mechanism evens out irregularities in ground level and cuts impact stress to a minimum. This not only increases the life of the track system but also protects the machine from long-term damage.
The PR 764 Litronic has a hydrostatically driven, demand-controlled cooling system and a wear-free braking mechanism via the hydrostatic drive system. Anti-wear protection for exposed working parts is also available. Before series production started, the prototypes of the new flagship Liebherr crawler tractor underwent intensive testing in the most diverse applications around the globe, including endurance tests on highway projects, mining, ripping and extreme temperatures in Mongolia and Russia.
The new flagship of the Liebherr crawler tractor range works on a revolutionary drive concept. The D 9508 310-kW (422-hp) Liebherr V8 diesel engine drives the crawler by means of four variable displacement pumps, each in a closed circuit. This drive system delivers maximum pushing and ripping performance in all speed ranges. With an operating weight of up to 116,150 pounds, the PR 752 is the largest hydrostatically driven crawler in the world.
A completely redesigned operator’s cab with its characteristic sloping outer edges provides the operator all-round visibility and an outstanding view of the blade and the rear ripper.
Noise levels in the cab itself, which are already minimal thanks to the good insulation features, are reduced even further by the exceptionally low-revving 1,600-rpm engine and the demand-controlled hydrostatic cooling system.
With its stepless drive system, easily maintained travel speeds, and pulling power, the PR 764 Litronic is always capable of whatever the job demands. Whether the machine is being used for heavy ripping jobs or to transport material, the optimum drive ratio is always available. Gear changes do not interrupt the power delivery because the diesel engine runs continuously in the optimum rpm range. This reduces fuel consumption, thereby lessening the environmental impact and increasing the machine’s working life. The hydrostatic drive has a particularly low centre of gravity, which makes the machine safe to operate on very steep inclines. The machine also provides exceptional ground clearance – a crucial advantage in rocky applications. Available as an option is a pivoting track system which enables the rollers to adapt flexibly to the ground conditions. This ensures that even where the ground is hard, there is much greater transmission of the engine‘s pulling power. The elastic suspension mechanism evens out irregularities in ground level and cuts impact stress to a minimum. This not only increases the life of the track system but also protects the machine from long-term damage.
The PR 764 Litronic has a hydrostatically driven, demand-controlled cooling system and a wear-free braking mechanism via the hydrostatic drive system. Anti-wear protection for exposed working parts is also available. Before series production started, the prototypes of the new flagship Liebherr crawler tractor underwent intensive testing in the most diverse applications around the globe, including endurance tests on highway projects, mining, ripping and extreme temperatures in Mongolia and Russia.
Company info
1015 Sutton Drive
Burlington, ON
CA, L7L 5Z8
Website:
liebherr.com/en/can/about-liebherr/liebherr-worldwide/canada/liebherr-in-canada.html