Liebherr introduce new PR 776 G8 crawler dozer
PR 776 Generation 8 (G8) offers ultimate efficiency through proven hydrostatic drive technology
LIEBHERR have expanded their successful 8th generation crawler dozer range with the introduction of their new flagship mining dozer, the state-of-the-art PR 776 G8, for use in arduous mining and quarrying operations. Together with the new PR 766 G8, introduced at the beginning of 2021, and the smaller PR 756 G8, Liebherr now offer a comprehensive range of cutting-edge mining dozers.
As the only mining dozers to feature a hydrostatic travel drive, the Liebherr fleet is said to offer best-in-class efficiency for customers. The combination of powerful Liebherr diesel engines with the standard ECO mode allows operators to choose between high performance and maximum efficiency at any time.
With an average of 38 litres of fuel burnt per hour, the flagship PR 776 G8 sets the benchmark for efficient dozing in the mining industry. The availability of new assistance systems also increases efficiency and ease of use.
The PR 776 G8 crawler dozer integrates advanced Operator Assistance Systems (OAS), previously available only on smaller models, that offer two levels of assistance: ‘Free Grade’, for active blade stabilization during fine grading, and ‘Definition Grade’, for automatic blade positioning when creating 2D grades.
With the ‘Auto Blade Pitch’ assistance system, the operator can save and call up three blade positions at the touch of a button: (1) perfect material penetration, (2) optimum material transport, and (3) rapid blade clearing at the end of the push path. The assistance systems on the PR 776 G8 not only increase productivity and efficiency, but also enhance operator comfort.
The tried-and-tested Liebherr hydrostatic drive system eliminates high-wear components such as gearboxes, steering clutches, and service brakes. Instead, high-quality hydraulic pumps and motors operate virtually wear-free, offering exceptional operational dependability.
Liebherr also offer numerous factory-fitted, field-tested adaptations for their dozers ,to accommodate various environmental temperatures, from desert operations to extremely cold conditions.
Optimal service accessibility and extended maintenance intervals are key features of the PR 776 G8. Centralized maintenance points, wide-opening access flaps and engine compartment doors, a standard tiltable operator’s cab, and an optional swing-out fan for cleaning facilitate quick maintenance access and straightforward servicing.
The new PR 776 G8 also boasts particularly long change intervals for operating fluids such as hydraulic oil and engine oil. When using Liebherr Plus oils, these intervals can, with regular checks, extend up to 8,000 operating hours, depending on the application.
Liebherr mining dozers are said to provide first-class cabin comfort, with operators appreciating the convenience and simplicity of a single joystick, whilst safety is enhanced via 360° blade and ripper visibility, provided by large panoramic windows and integrated ROPS/FOPS in the cab structure.
When in a hostile work environment for operators or machines, Liebherr Remote Control (LiReCon) helps boost safety, comfort, and productivity. Suitable for all dozer applications, the system consists of the Liebherr Remote Control teleoperation stand; a state-of-the-art operator workspace, including all required controls; and onboard dozer installations such as cameras for various angles and views, microphones for recording machine sounds, and a radio link receiver and transmitter.
LiReCon allows fast shift changes between operators and, consequently, reduces idling and downtime. As the operator is no longer tied to the machine, it also allows customers to reach new extraction areas in hazardous zones, thus extending the range of applications for Liebherr mining dozers.
