Since its market launch in 2016, the world’s biggest hydrostatic dozer, the Liebherr PR 776, has achieved many successes and exceeded the expectations of Liebherr customers worldwide. Recently the Liebherr factory in Telfs, Austria celebrated the commissioning of 100 PR 776 Mining Dozers.
Since its market launch in 2016, the world’s biggest hydrostatic dozer, the Liebherr PR 776, has been commissioned 100 times.Since its market launch in 2016, the world’s biggest hydrostatic dozer, the Liebherr PR 776, has been commissioned 100 times.
Ultimate efficiency: Proven hydrostatic drive concept
As the only mining dozer in the 70-tonne-class featuring a hydrostatic travel drive, the PR 776 offers best-in-class efficiency for customers. The powerful Liebherr diesel engine in combination with the standard ECO mode, allows operators to choose between high performance and maximum efficiency at any time.
With 100 dozers in operation, a total of 760,000 operating hours and an average of 38 liters of fuel burnt per hour, the PR 776 has set a new benchmark regarding efficient dozing in the mining industry
Global markets, various commodities and extreme applications
Led by the first ever commissioned Liebherr PR 776 in 2016 (with nearly 30,000 operating hours today), the biggest national fleet is running in Russia. Followed by African, Australian and North American markets, the Liebherr mining dozers are mainly supporting the extraction of a broad range of commodities.
To withstand the ambient temperatures in the different regions, ranging between -49° C and +46° C, the PR 776 dozer can be optionally equipped with an arctic package. In addition, a special high altitude package has been developed by the Liebherr R&D department, to handle the oxygen saturation of only 50 percent in a copper mine in Maizhokunggar, Tibet – situated nearly 5,500 meters above sea level.
Customers appreciate the high levels of productivity, efficiency and safety
Multiple customer success stories and competitive comparisons have shown that Liebherr’s hydrostatic dozer cannot only keep up with other 70-tonne-dozers in terms of pushing performance, it even outperforms them in regards to tonnes per liter pushed.
The PR 776 exceeds in all areas, including cabin comfort. Operators appreciate the convenience and simplicity of a single joystick. Safety is enhanced via 360-degree blade and ripper visibility, provided by large panoramic windows and integrated ROPS / FOPS in the cab structure.