JOHN DEERE 770B MOTOR GRADERS

Technical Description

The John Deere 770B Motor Grader is a robust, heavy-duty machine engineered for demanding road construction and grading applications. It features a 6-cylinder, turbocharged John Deere 6076T engine delivering 155 horsepower at 2200 rpm and 522 lb-ft of torque at 1100 rpm, ensuring reliable performance in tough conditions. The direct drive, planetary power shift transmission provides eight forward and four reverse gears, with a maximum forward speed of 25.2 mph and reverse speed of 8.6 mph. The hydraulic system uses a closed center variable displacement pump with a flow rate of 52.4 gpm, supporting efficient blade and moldboard control. The moldboard is 12 feet wide, 24 inches high, and 0.9 inches thick, with side shift capability of 26.9 inches left and right. The circle offers a 360-degree rotation, 49-degree front and 5-degree rear blade tip angles, and a maximum lift of 18.6 inches above ground. The machine measures 28 feet in overall length, 8.1 feet in width over tires, and 10.2 feet in height to the top of the Isomount cab. Standard operating weight is 31,250 lbs, with a maximum operating weight of 35,450 lbs. The front axle provides 1.9 feet of ground clearance, 32 degrees of oscillation, and 20 degrees of wheel lean. The steering system allows for a 25-degree articulation angle and a 22-foot turning radius. The 770B is equipped with a 90-gallon fuel tank, 23-gallon hydraulic system capacity, and 14.00-24 tires, making it well-suited for extended operation in diverse environments.