- 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.
Circle
| Blade Tip Angle - Front | 44 degrees
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| Blade Tip Angle - Rear | 10 degrees
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| Diameter | 59 in (150 cm)
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| Max Lift Above Ground | 17 in (43 cm)
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| Max Reach Outside Tires - Left | 90 in (228 cm)
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| Max Reach Outside Tires - Right | 89 in (225 cm)
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| Rotation | 360 degrees
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| Shift Left | 34 in (85 cm)
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| Shift Right | 32 in (82 cm)
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Dimensions
| Blade Base | 9 ft (3 m)
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| Front Ground Clearance | 2 ft (1 m)
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| Height to Top of Isomount Cab | 11 ft (3 m)
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| Overall Length | 28 ft (8 m)
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| Tandem Axle Wheelbase | 5 ft (2 m)
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| Wheelbase | 20 ft (6 m)
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| Width Over Tires | 8 ft (2 m)
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Engine
| Aspiration | Turbocharged with Intercooler
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| Displacement | 466 cu in (7,636 cu cm)
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| Engine Model | 6-466A
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| Max Power | 150 hp (112 kw)
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| Net Power Gears 7-8 | 150 hp (112 kw)
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| Net Torque Gears 7-8 | 465 lbs ft (630 nm)
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| Number of Cylinders | 6
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| Power Measured @ | 2200 rpm
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| Torque Measured @ | 1300 rpm
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Front Axle
| Ground Clearance | 2 ft (1 m)
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| Oscillation - Total | 30 degrees
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| Wheel Lean | 20 degrees
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Hydraulic System
| Pump Flow | 36 gpm (136 lpm)
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| Pump Type | Closed Center Variable Displacement
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Moldboard
| Moldboard Height | 24 in (61 cm)
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| Moldboard Thickness | 1 in (2 cm)
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| Moldboard Width | 12 ft (4 m)
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| Side Shift Left | 27 in (68 cm)
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| Side Shift Right | 27 in (68 cm)
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Operating Specifications
| Alternator Supplied Amperage | 42 amps
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| Circle Gearbox Fluid Capacity | 1 gal (4 l)
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| Cooling System Fluid Capacity | 7 gal (27 l)
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| Fuel Capacity | 70 gal (265 l)
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| Hydraulic System Fluid Capacity | 31 gal (117 l)
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| Max Operation Weight - Front Axle | 9,091 lbs (4,124 kg)
|
| Max Operation Weight - Rear Axle | 24,758 lbs (11,230 kg)
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| Max Operation Weight - Total | 33,849 lbs (15,354 kg)
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| Oil System Fluid Capacity | 5 gal (19 l)
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| Operating Voltage | 24 volts
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| Std Operation Weight - Front Axle | 8,548 lbs (3,877 kg)
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| Std Operation Weight - Rear Axle | 21,712 lbs (9,848 kg)
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| Std Operation Weight - Total | 30,260 lbs (13,726 kg)
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| Tandem Case Fluid Capacity (each) | 5 gal (19 l)
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| Tire Size | 14.00-25
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Steering System
| Articulation Angle | 25 degrees
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| Turning Radius | 22 ft (7 m)
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Transmission
| Max Speed - Forward | 25 mph (40 kph)
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| Max Speed - Reverse | 9 mph (14 kph)
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| Number of Gears - Forward | 8
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| Number of Gears - Reverse | 4
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| Transmission Type | Power Shift
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