JOHN DEERE 772B MOTOR GRADERS

Technical Description

The John Deere 772B is a heavy-duty motor grader designed for road construction and maintenance applications. Powered by a turbocharged 6-cylinder 6466T engine with 466 cubic inches of displacement, it delivers 155 horsepower and 480 pound-feet of torque, measured at 2200 and 1400 rpm respectively. The machine features a power-shift transmission with eight forward gears and four reverse gears, enabling a maximum forward speed of 25.2 mph and reverse speed of 8.6 mph. Dimensionally, the grader measures 28 feet in overall length, 8.1 feet in width over tires, and 19.6 feet in wheelbase, with a standard operating weight of 32,450 pounds and maximum operating weight of 36,730 pounds. The 12-foot moldboard features a 49-degree front blade tip angle and 5-degree rear angle, with a 360-degree rotating circle capable of 85.1 inches maximum reach to the left and 83.1 inches to the right. The hydraulic system utilizes a closed-center variable displacement pump delivering 52.4 gallons per minute, with 23-gallon fluid capacity. The front axle provides 32 degrees of total oscillation and 20 degrees of wheel lean for improved maneuverability, while the articulation steering angle reaches 25 degrees with a 22.6-foot turning radius. Operating specifications include 24-volt electrical system, 90-gallon fuel capacity, and tire size 14.00-24.