JOHN DEERE 770CH SERIES II MOTOR GRADERS

Technical Description

The 2003 John Deere 770CH Series II Motor Grader is a robust, high-performance machine engineered for demanding grading applications. With an overall length of 28 ft and a width of 8.05 ft, it features a wheelbase of 20.41 ft and a tandem axle wheelbase of 5.23 ft, ensuring stability and maneuverability. The grader is equipped with a powerful 409 cubic inch engine delivering 220 gross horsepower at 2200 rpm and a maximum torque of 686 lb-ft at 1500 rpm, providing exceptional power for heavy-duty tasks. The total operating weight ranges from approximately 33,797 to 35,993 lbs, with a blade down force of 18,519 lbs for effective material displacement. The 14 ft moldboard and 8.41 ft blade base length, along with available front blade widths of 144, 156, and 168 in, offer versatility for various grading needs. The machine boasts a turning radius of 23.8 ft and a 25-degree articulation angle, enhancing maneuverability in tight spaces. Maximum travel speed reaches approximately 27.9 mph, and the Powershift direct-drive transmission offers both manual and automatic shifting options. The 17.5 x 25 tires provide reliable traction, while the hydraulic system delivers a flow rate of 49.2 gallons per minute. The cab features floor-to-ceiling glass for superior visibility, and the ripper assembly, weighing about 1,876 lbs, includes 5 teeth with a lift of 20.7 in above ground and a maximum penetration of 12.5 in. Optional scarifier teeth (11 front) and all-wheel drive further enhance its versatility and productivity.