KOMATSU GD300A-1 MOTOR GRADERS

Technical Description

The Komatsu GD300A-1 Motor Grader is a heavy-duty articulated machine designed for precise grading, leveling, and earthmoving tasks. It features a 75 hp (56 kW) 4D105-5 diesel engine with a displacement of 264 cu in, delivering 194 lb-ft of torque at gears 5-6 for reliable performance. The grader has a 10.2 ft wide moldboard with a maximum cutting depth of 10.7 in, a height of 22.9 in, and a thickness of 0.7 in, providing durability and efficient material handling. The circle system allows a maximum lift above ground of 13 in, with left and right reach outside tires of 45.3 in and 43.4 in, respectively. The machine’s overall length is 22 ft, with a wheelbase of 16.2 ft and a width over tires of 6.8 ft, ensuring stability and maneuverability. Ground clearance is 1.4 ft at the front and 1.2 ft at the rear, while the tandem axle wheelbase is 4 ft. The front axle offers 26 degrees of oscillation and 19 degrees of wheel lean for improved traction on uneven terrain. Steering articulation is 30 degrees, with a turning radius of 18.1 ft. The transmission is a constant mesh and synchromesh combined type, with 5 forward and 4 reverse gears, and maximum speeds of 18.9 mph forward and 19.3 mph reverse. Standard operating weight is 16,534.7 lbs, distributed as 4,960.5 lbs on the front axle and 11,574.3 lbs on the rear axle. Tires are 9.00-20-10PR front and 10.00-20-10PR rear.