KOMATSU GD555-5 MOTOR GRADERS

Technical Description

The Komatsu GD555-5 motor grader features a powerful Komatsu SAA6D107E-1 engine, a water-cooled, 4-cycle, direct injection diesel engine with turbocharging and air-to-air aftercooling, delivering 193.2 hp (144 kW). It has six cylinders with a displacement of 408.3 cubic inches, a bore of 4.3 inches, and a stroke of 4.9 inches. The grader’s overall length measures 34.01 feet, with a wheelbase to the center of tandem of 20.6 feet. Its moldboard is 12.2 feet wide, 25.4 inches high, and 0.9 inches thick, capable of a maximum lift above ground of 1.6 feet and a maximum shoulder reach of 6.6 feet on both sides with the frame straight. The machine offers a minimum turning radius of 24 feet. Hydraulically, the circle diameter is 60.3 inches with full 360-degree rotation. The front axle provides 2.1 feet of ground clearance and supports 32 degrees of oscillation and 20 degrees of wheel lean to maintain stability and maneuverability on uneven surfaces. The operating weight totals approximately 39,948 lbs, distributed as about 11,993 lbs on the front wheels and 27,955 lbs on the rear wheels. Fluid capacities include a 109.9-gallon diesel fuel tank, 6.6 gallons for the cooling system, 4.5 gallons for the final drive, 15.1 gallons for tandem housing, and 11.9 gallons for transmission fluid. Its powertrain employs a torque converter with automatic transmission and selectable work modes for efficiency and smooth operation in various grading tasks.