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Product Review

Komatsu Introduces GD955-7 Motor Grader to North American Market

Komatsu is excited to introduce 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 and is an important addition to Komatsu’s motor grader lineup.

This powerful new machine stands out with its ample horsepower and powerful 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.

Quick specs:

  • Horsepower: 426 HP @ 1,900 rpm (313 kW @ 1,900 rpm)
  • Operating weight: 104,323 lbs. (47,320 kg)
  • Moldboard: 18-foot (5.5 m) standard, 20-foot (6.1 m) moldboard optional

Features And Benefits

Get consistent, reliable grades
A long wheelbase and heavy operating weight allow the GD955-7 to achieve high blade downforce pressures at more aggressive moldboard angles for improved penetration and material flow in hard-packed road surface applications.
Work effectively in confined areas
The large 27-degree articulation angle allows a tight turning radius and provides maneuverability for narrow haul road applications in confined spaces and around obstacles.
Strong and durable structure

Redesigned front and rear frames help withstand bending forces and torsional loads, promoting reduced life-cycle costs and a longer service life.
Make maintenance easy
A newly adopted bearing-type circle assembly eliminates wear plates and the need for frequent play adjustments to help minimize downtime. Coupled with an auto-lubrication system, this helps to reduce maintenance times by up to 21%*.
Optimize your machine’s performance
Perform routine checks, inspections and repairs conveniently with a centrally located, ground-level service center. Regular maintenance helps promote your machine’s uptime, while easy access streamlines maintenance workflow.
Flexible for all operator levels
Enhance production with the efficiency of a direct-drive transmission and the controllability of a torque converter drive transmission. Perfect for trained operators of all experience levels and applicable to a wide variety of tasks, including maintaining and building haul roads.
Stay comfortable while working
Operators can work comfortably in the cab throughout the day with an air-suspension, heated and ventilated seat that helps dampen mechanical vibrations. Operators can also electronically or manually adjust the control lever console height to their preference.
Precise control efficient operation
Controls within easy reach allow operators to quickly adjust to changing grading conditions or terrain. This helps optimize performance, while fingertip controls make for a more ergonomic and comfortable working environment.
Facilitating work site visibility

The hexangular cab and integrated control console layout allow for improved visibility to the moldboard. Strategically placed mirrors enhance visibility, while KomVision provides a bird’s-eye view around the vehicle on an in-cab monitor.

*Compared to the previous model

Despite its large size, the GD955-7 offers excellent maneuverability. It can execute 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.

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.

“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.

Additional information GD955-7 motor grader – learn more here

Click HERE for the brochure on the GD955-7.