Komatsu GD825A-2 Motor Grader Specs

Category: Motor Graders ➔
Manufacturer: Komatsu ➔
Model: GD825A-2 ➔

Komatsu GD825A-2 motor grader is a heavy-duty grading machine used for road construction, site preparation, ditching, and maintenance work. It is designed for precise blade control, material spreading, and surface leveling on highways, mining sites, and large earthmoving projects. The GD825A-2 is part of Komatsu's motor grader lineup and is commonly configured with a front-mounted blade, articulated frame, and rear tandem drive for traction and stability. Typical applications include fine grading, slope shaping, snow removal, and road finishing. The model is recognized for its serviceability, operator control layout, and suitability for demanding grading operations in construction and infrastructure work.

Blade

Komatsu GD825A-2 Motor Grader Blade specifications
Blade Tip Angle	49° forward, 5 ° reverse
Maximum Lift Above Ground	1.40 ft (0.43 m)
Maximum Shoulder Reach Outside Rear Tyres (Frame Straight): Left	7.90 ft (2.41 m)
Maximum Shoulder Reach Outside Rear Tyres (Frame Straight): Right	7.90 ft (2.41 m)

Capacities

Komatsu GD825A-2 Motor Grader Capacities specifications
Coolant	15.40 gal (58.29 l)
Engine Oil	10.10 gal (38.23 l)
Final Drive	16.70 gal (63.21 l)
Fuel Tank - Diesel	132.10 gal (500.00 l)
Hydraulic Tank	21.20 gal (80.24 l)
Tandem Housing	50.20 gal (190.01 l)
Transmission	6.70 gal (25.36 l)

Circle

Komatsu GD825A-2 Motor Grader Circle specifications
Blade Tip Angle - Front	49 degrees
Blade Tip Angle - Rear	5 degrees
Diameter	70.00 in (177.80 cm)
Max Lift Above Ground	19.00 in (48.26 cm)
Max Reach Outside Tires - Left	94.00 in (238.76 cm)
Max Reach Outside Tires - Right	94.00 in (238.76 cm)
Rotation	360 degrees

Dimensions

Komatsu GD825A-2 Motor Grader Dimensions specifications
Articulation Angle	25 degrees
Blade Base	10.18 ft (3.10 m)
Height To Top Of Isomount Cab	11.67 ft (3.56 m)
Minimum Turning Radius	25.92 ft (7.90 m)
Overall Length	32.85 ft (10.01 m)
Tandem Axle Wheelbase	6.00 ft (1.83 m)
Wheelbase	23.40 ft (7.13 m)
Width Over Tires	10.86 ft (3.31 m)

Engine

Komatsu GD825A-2 Motor Grader Engine specifications
Aspiration	Turbocharged Diesel engine
Displacement	359.00 cu in (5,882.97 cu cm)
Engine Make	2238
Engine Model	S6D140E
Max Power	280.00 hp (208.80 kw)
Net Power Gears 7-8	280.00 hp (208.80 kw)
Number Of Cylinders	6
Piston Displacement	408.30 cu in (6,690.85 cu cm)
Power Measured @	2100 rpm

Frame

Komatsu GD825A-2 Motor Grader Frame specifications
Front Frame Structure - Height	1.40 ft (0.43 m)
Front Frame Structure - Width	1.20 ft (0.37 m)

Front Axle

Komatsu GD825A-2 Motor Grader Front Axle specifications
Ground Clearance	2.30 ft (0.70 m)
Oscillation - Total	32 degrees
Wheel Lean	14.5 degrees

Hydraulic System

Komatsu GD825A-2 Motor Grader Hydraulic System specifications
Pump Type	Double-acting piston-type hydraulic cylinders
Relief Valve Pressure	3560 psi

Moldboard

Komatsu GD825A-2 Motor Grader Moldboard specifications
Blade Pull At Max Weight	30,250.00 lbs (13,721.19 kg)
Max Depth Of Cut	19.00 in (48.26 cm)
Moldboard Height	31.00 in (78.74 cm)
Moldboard Thickness	1.00 in (2.54 cm)
Moldboard Width	16.20 ft (4.94 m)

Operational

Komatsu GD825A-2 Motor Grader Operational specifications
Alternator Supplied Amperage	50 amps
Cooling System Fluid Capacity	15.30 gal (57.91 l)
Fuel Capacity	132.10 gal (500.00 l)
Hydraulic System Fluid Capacity	21.10 gal (79.86 l)
Max Operation Weight - Front Axle	17,570.00 lbs (7,969.63 kg)
Max Operation Weight - Rear Axle	40,680.00 lbs (18,452.16 kg)
Max Operation Weight - Total	58,250.00 lbs (26,421.79 kg)
Oil System Fluid Capacity	10.10 gal (38.23 l)
Operating Voltage	24 V
Tandem Case Fluid Capacity (Each)	50.20 gal (190.01 l)
Tire Size	23.5 X 25-12PR (L3) tires
Transmission Fluid Capacity	6.60 gal (24.98 l)

Steering

Komatsu GD825A-2 Motor Grader Steering specifications
Articulation Angle	25 degrees
Turning Radius	26.00 ft (7.92 m)

Transmission

Komatsu GD825A-2 Motor Grader Transmission specifications
Max Speed - Forward	27.90 mph (44.90 kph)
Max Speed - Reverse	29.80 mph (47.96 kph)
Number Of Gears - Forward	8
Number Of Gears - Reverse	8
Transmission Type	komatsu HYDROSHIFT Transmission

Weights

Komatsu GD825A-2 Motor Grader Weights specifications
Operating Weight - On Front Wheels	17,570.90 lbs (7,970.04 kg)
Operating Weight - On Rear Wheels	40,521.00 lbs (18,380.04 kg)
Total Operating Weight	58,091.90 lbs (26,350.08 kg)

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