Komatsu is introducing the new GD955-7 motor grader to the North American market. The GD955-7 offers operators the control and precision needed to build and maintain haul roads for truck fleets of 100 tons and up.
The new machine delivers ample horsepower and blade downforce pressure for efficient grading performance. With faster working travel speeds compared to the previous model, Komatsu engineered the GD955-7 to increase grading efficiency while helping reduce maintenance requirements and total cost of ownership.
The 47,320 kg motor grader is powered by a 426 hp Komatsu SAA6D140E-7 engine.
The standard 5.5 metre moldboard provides up to a 33 per cent increase in productivity, while the 6.1 metre moldboard boosts productivity as much as 50 per cent.
As well, a long wheelbase and heavy operating weight allow the GD955-7 motor grader to achieve high blade downforce pressures at more aggressive moldboard angles for improved penetration and material flow in hard-packed road surface applications.
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Despite its large size, the GD955-7 is able to maneuver tight U-turns on a standard 100-ton class haul road without the need to fully cut the wheel or course correct. The long wheelbase and large, 27-degree articulation angle allow a tight turning radius and provide maneuverability for narrow haul road applications in confined spaces and around obstacles.
“With significant increases in operating weight, blade downforce pressure and working travel speeds, this new size class motor grader will be a smart choice for increased efficiency on our customer’s mine sites,” said Joseph Sollitt, Director of Mining Support Equipment at Komatsu Ltd.
The newly adopted, long-life circle bearing allows for smooth and precise rotation of the moldboard while eliminating the need for circle play adjustments or replacing wear plates. Coupled with a standard auto-lubrication system, the GD955-7 is engineered to help reduce planned and unplanned maintenance downtime while helping to extend life to overhaul.
