Liebherr

September 28, 2010

Liebherr PR 764 Litronic Crawler DozerIntroduced at Minexpo 2008, the 422-horsepower Liebherr PR 764 Litronic tractor boasts an operating weight of 52.5 metric tons, staking a claim as the world’s largest hydrostatically-driven crawler dozer. A Liebherr D9508 V8 diesel engine drives the machine by means of four variable-displacement pumps and engines, each in a closed circuit. Providing increased pushing power, tractive force and counter-rotation, the PR 764 Litronic’s hydrostatic driveline system has a particularly low center of gravity, thus making the machine safe to operate on steep slopes, says the company. An optional pivoting track system further enables the rollers to adapt to ground conditions.

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