Komatsu Shows Big Haul Road Motor Grader

Dec. 8, 2023
The 426-horsepower unit promises beefed-up performance.

Komatsu recently offered journalists a peek at its new motor grader for haul roads used by truck fleets 100 tons and higher.

The Komatsu 426-horsepower GD955-7 grader features an 18-foot moldboard (with 20 feet as an option) and a new circle bearing that eliminates the need for circle guide and wear plate adjustments, reducing downtime for maintenance.

It also has a long wheelbase and high operating weight of 104,323 pounds, increasing its blade-down force pressure for penetrating hard-packed road surfaces by up to 20%, the company says.

"The grader can execute tight U-turns on a standard 100-ton-class haul road without the need to fully cut the wheels or course correct," says Sebastian Witkowski, product manager, Komatsu mining support equipment.

Performance-wise, the GD955-7 has notable increases over its predecessor, including 32% higher engine output for up to 19% higher working travel speeds; a 33% increase in productivity with the 18-foot moldboard; and a 21% reduction in total maintenance time with the circle bearing system.

The grader is scheduled to be available this quarter, according to Witkowski.


About the Author

Frank Raczon

Raczon’s writing career spans nearly 25 years, including magazine publishing and public relations work with some of the industry’s major equipment manufacturers. He has won numerous awards in his career, including nods from the Construction Writers Association, the Association of Equipment Manufacturers, and BtoB magazine. He is responsible for the magazine's Buying Files.