- Category: Motor Graders ➔
- Manufacturer: John Deere ➔
- Model: 770A ➔
The John Deere 770A Motor Graders are powerful machines designed for grading and leveling surfaces with precision and efficiency. With a turbocharged engine producing 150 horsepower and a variety of operating specifications, including a 12-foot moldboard width and maximum operation weight of 33,849 pounds, the 770A is well-equipped to handle a wide range of grading tasks. From circle blade tip angles to hydraulic system pump flow, this motor grader offers exceptional performance for construction and road maintenance projects.
General Specifications
Circle
Blade Tip Angle - Front | 44 degrees
|
Blade Tip Angle - Rear | 10 degrees
|
Diameter | 59 in (150 cm)
|
Max Lift Above Ground | 17 in (43 cm)
|
Max Reach Outside Tires - Left | 90 in (228 cm)
|
Max Reach Outside Tires - Right | 89 in (225 cm)
|
Rotation | 360 degrees
|
Shift Left | 34 in (85 cm)
|
Shift Right | 32 in (82 cm)
|
Dimensions
Blade Base | 9 ft (3 m)
|
Front Ground Clearance | 2 ft (1 m)
|
Height to Top of Isomount Cab | 11 ft (3 m)
|
Overall Length | 28 ft (8 m)
|
Tandem Axle Wheelbase | 5 ft (2 m)
|
Wheelbase | 20 ft (6 m)
|
Width Over Tires | 8 ft (2 m)
|
Engine
Aspiration | Turbocharged with Intercooler
|
Displacement | 466 cu in (7,636 cu cm)
|
Engine Model | 6-466A
|
Max Power | 150 hp (112 kw)
|
Net Power Gears 7-8 | 150 hp (112 kw)
|
Net Torque Gears 7-8 | 465 lbs ft (630 nm)
|
Number of Cylinders | 6
|
Power Measured @ | 2200 rpm
|
Torque Measured @ | 1300 rpm
|
Front Axle
Ground Clearance | 2 ft (1 m)
|
Oscillation - Total | 30 degrees
|
Wheel Lean | 20 degrees
|
Hydraulic System
Pump Flow | 36 gpm (136 lpm)
|
Pump Type | Closed Center Variable Displacement
|
Moldboard
Moldboard Height | 24 in (61 cm)
|
Moldboard Thickness | 1 in (2 cm)
|
Moldboard Width | 12 ft (4 m)
|
Side Shift Left | 27 in (68 cm)
|
Side Shift Right | 27 in (68 cm)
|
Operating Specifications
Alternator Supplied Amperage | 42 amps
|
Circle Gearbox Fluid Capacity | 1 gal (4 l)
|
Cooling System Fluid Capacity | 7 gal (27 l)
|
Fuel Capacity | 70 gal (265 l)
|
Hydraulic System Fluid Capacity | 31 gal (117 l)
|
Max Operation Weight - Front Axle | 9,091 lbs (4,124 kg)
|
Max Operation Weight - Rear Axle | 24,758 lbs (11,230 kg)
|
Max Operation Weight - Total | 33,849 lbs (15,354 kg)
|
Oil System Fluid Capacity | 5 gal (19 l)
|
Operating Voltage | 24 volts
|
Std Operation Weight - Front Axle | 8,548 lbs (3,877 kg)
|
Std Operation Weight - Rear Axle | 21,712 lbs (9,848 kg)
|
Std Operation Weight - Total | 30,260 lbs (13,726 kg)
|
Tandem Case Fluid Capacity (each) | 5 gal (19 l)
|
Tire Size | 14.00-25
|
Steering System
Articulation Angle | 25 degrees
|
Turning Radius | 22 ft (7 m)
|
Transmission
Max Speed - Forward | 25 mph (40 kph)
|
Max Speed - Reverse | 9 mph (14 kph)
|
Number of Gears - Forward | 8
|
Number of Gears - Reverse | 4
|
Transmission Type | Power Shift
|