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Komatsu GD31RC-3A Motor Grader

The Komatsu GD31RC-3A Motor Grader is a powerful and versatile machine designed for precision grading in a variety of construction and road maintenance applications. With a circle max lift above ground of 18.2 inches and a circle max reach outside tires of 61.3 inches on both the left and right sides, this grader offers excellent maneuverability and control. Featuring a 110 horsepower engine and a transmission with 6 forward and 2 reverse gears, the GD31RC-3A is capable of achieving a maximum speed of 23.8 mph. With a moldboard width of 10.2 feet and a total weight of 19,687.3 pounds, this motor grader is a reliable and efficient choice for any grading project.


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Circle

Max Lift Above Ground18.20 in (46.23 cm)
Max Reach Outside Tires - Left61.30 in (155.70 cm)
Max Reach Outside Tires - Right61.30 in (155.70 cm)

Dimensions

Front Ground Clearance1.50 ft (0.46 m)
Height to Top of Isomount Cab10.40 ft (3.17 m)
Overall Length22.20 ft (6.77 m)
Rear Ground Clearance1.20 ft (0.37 m)
Tandem Axle Wheelbase4.00 ft (1.22 m)
Wheelbase16.10 ft (4.91 m)
Width Over Tires6.90 ft (2.10 m)

Engine

Displacement518.00 cu in (8,488.52 cu cm)
Engine Model4D130
Max Power110.00 hp (82.03 kw)
Net Power Gear 5-6110.00 hp (82.03 kw)
Net Torque Gears 5-6375.00 lbs ft (508.43 nm)

Front Axle

Ground Clearance1.50 ft (0.46 m)
Oscillation - Total26 degrees
Wheel Lean25 degrees

Moldboard

Max Depth of Cut17.00 in (43.18 cm)
Moldboard Height20.50 in (52.07 cm)
Moldboard Thickness0.50 in (1.27 cm)
Moldboard Width10.20 ft (3.11 m)

Operating Specifications

Std Operation Weight - Front Axle5,269.10 lbs (2,390.03 kg)
Std Operation Weight - Rear Axle14,418.30 lbs (6,540.04 kg)
Std Operation Weight - Total19,687.30 lbs (8,930.02 kg)
Tire Sizefront 9.00-20-10PR rear 11.00-20-10PR

Steering System

Turning Radius29.60 ft (9.02 m)

Transmission

Max Speed - Forward23.80 mph (38.30 kph)
Max Speed - Reverse7.30 mph (11.75 kph)
Number of Gears - Forward6
Number of Gears - Reverse2
Transmission Typesliding mesh and constant mesh combined
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