KOMATSU GD605A-2 MOTOR GRADERS

Technical Description

The Komatsu GD605A-2 motor grader is a robust construction machine designed for precise grading and earthmoving tasks. It is powered by a Cummins NH220-CI diesel engine with a displacement of 743 cubic inches, delivering a maximum power output of 145 hp (108 kW) and a net torque of 528 lb-ft, optimizing performance under heavy loads. The grader features a hydroshift transmission with six forward and six reverse gears, enabling a maximum forward speed of 27.1 mph (44 kph) and reverse speed of 32.1 mph (52 kph). The articulation angle of 25 degrees and a turning radius of 22.7 ft allow excellent maneuverability in confined work sites. The machine's moldboard measures 12.2 ft in width, 25.8 in in height, and 0.8 in in thickness, providing a maximum cutting depth of 22.5 in, suitable for a wide range of grading applications. The blade base is 8.9 ft, with a maximum lift above ground of 15.8 inches and side reach outside tires of 83.3 inches on the left and 81 inches on the right. The front axle offers a total oscillation of 30 degrees and a wheel lean of 23 degrees, enhancing ground contact and stability on uneven surfaces. Measuring 27.7 ft in overall length with a wheelbase of 19.7 ft, the grader maintains good ground clearance—2 ft at the front and 1.1 ft at the rear—while a tandem axle wheelbase of 5 ft ensures balanced weight distribution. The standard operating weight totals approximately 28,726 lbs, with 7,915 lbs on the front axle and 20,812 lbs on the rear. Tires sized 13.00-24-10PR support stable traction across various terrains. The cab height stands at 19.7 ft, providing operator visibility and comfort essential for long-duration tasks. This combination of power, precision, and mobility makes the Komatsu GD605A-2 a reliable and efficient motor grader for multiple construction and earthmoving projects.