KOMATSU GD705R-2 MOTOR GRADERS

Technical Description

The Komatsu GD705R-2 motor grader is a heavy-duty construction machine engineered for efficient earthmoving and grading tasks. It is powered by a Cummins HN-220-CI engine with a displacement of 743 cu in (12.2 L), delivering a maximum power output of 180 hp (134 kW) and peak torque of 579 lb-ft (785 Nm) in gears 3-4, ensuring strong performance under load. The grader’s TORQFLOW transmission includes 4 forward and 4 reverse gears, allowing maximum travel speeds of 27.4 mph (44 km/h) in both directions for balanced mobility. The machine features a 14.2 ft (4.32 m) wide moldboard with a thickness of 0.8 in (19 mm) and a maximum cutting depth of 26.8 in (680 mm), providing substantial grading capacity. Its blade base measures 9.1 ft (2.76 m), with the circle allowing a lift of up to 16.6 in (420 mm) above ground and maximum reach roughly 92 in (2.34 m) beyond the tires on each side. Dimensionally, the GD705R-2 spans about 20.2 ft (6.15 m) wheelbase with a total operation weight near 38,581 lbs (17,500 kg). Ground clearances are 1.9 ft (575 mm) front and 1.5 ft rear, while the height to the top of the ISO mount cab is 11.3 ft (3.35 m). The front axle offers 26° oscillation and 20° wheel lean for enhanced stability on uneven terrain. Tires are 14.00-24-12PR. Steering achieves a turning radius of 37.8 ft (11.5 m), optimized for maneuverability in tight spaces. Overall, the Komatsu GD705R-2 combines robust power, durable components, and precise control, making it suitable for demanding grading applications in construction and infrastructure projects.