KOMATSU GD555-3 MOTOR GRADERS

Technical Description

The Komatsu GD555-3 Motor Grader is a robust, high-performance machine engineered for demanding grading applications. Powered by a turbocharged and aftercooled 6-cylinder SAA6D102E-2 diesel engine, it delivers 140 hp (104 kW) at 2000 rpm in base configuration and up to 160 hp (119 kW) in VHP mode, with peak torque of 538 lb-ft available from gears 3 through 8. The full power shift transmission offers 8 forward and 4 reverse gears, enabling smooth operation and efficient productivity. The hydraulic system features a closed center load sensing design with a 54 gpm pump and a 3000 psi relief valve, ensuring responsive and precise control. The moldboard is 12 ft long and 26 in high, with a maximum depth of cut of 32.9 in and side shift capability of 32.3 in left and right. The circle provides 360° rotation, 24.5 in left/right shift, and a maximum lift above ground of 19.1 in. The machine’s overall length is 30.9 ft, with a wheelbase of 19.2 ft and a width over tires of 8.3 ft. The articulated steering system allows a 23° articulation angle and a 22.4 ft turning radius. Standard operating weight is 30,950 lbs, with a 24-volt electrical system and a 90-amp alternator. The GD555-3 is equipped with advanced features such as a sealed oil disc brake system, high visibility cab, and comprehensive fluid capacities for reliable operation in diverse conditions.