- Category: Motor Graders ➔
- Manufacturer: Komatsu ➔
- Model: GD825A-2 ➔
Komatsu GD825A-2 motor grader is a heavy-duty grading machine designed for road construction, maintenance, and site preparation. It is part of Komatsu's GD series and is used for shaping surfaces, fine grading, ditching, and snow removal. The GD825A-2 typically features a moldboard, articulated frame, and hydraulic controls for precise blade positioning and material handling. Built for municipal, highway, and mining applications, it is suited to tasks requiring consistent grade control and maneuverability. The model is commonly referenced in equipment fleets, used machinery listings, and parts identification for Komatsu motor graders.
Blades
| Maximum lift above ground | 1 ft (0 m)
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| Maximum shoulder reach outside rear tyres (frame straight): Left | 8 ft (2 m)
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| Maximum shoulder reach outside rear tyres (frame straight): Right | 8 ft (2 m)
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Capacities
| Final Drive | 17 gal (63 l)
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| Fuel Tank - diesel | 132 gal (500 l)
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| Tandem Housing | 50 gal (190 l)
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| Transmission | 7 gal (25 l)
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Circle
| Blade Tip Angle - Front | 49 degrees
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| Blade Tip Angle - Rear | 5 degrees
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| Diameter | 70 in (178 cm)
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| Max Lift Above Ground | 19 in (48 cm)
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| Max Reach Outside Tires - Left | 94 in (239 cm)
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| Max Reach Outside Tires - Right | 94 in (239 cm)
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| Rotation | 360 degrees
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Dimensions
| Blade Base | 10 ft (3 m)
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| Height to Top of Isomount Cab | 12 ft (4 m)
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| Minimum turning radius | 26 ft (8 m)
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| Overall Length | 33 ft (10 m)
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| Tandem Axle Wheelbase | 6 ft (2 m)
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| Wheelbase | 23 ft (7 m)
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| Width Over Tires | 11 ft (3 m)
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Engine
| Aspiration | Turbocharged Diesel engine
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| Displacement | 359 cu in (5,883 cu cm)
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| Engine Model | S6D140E
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| Max Power | 280 hp (209 kw)
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| Net Power Gears 7-8 | 280 hp (209 kw)
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| Number of Cylinders | 6
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| Piston displacement | 408 cu in (6,691 cu cm)
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| Power Measured @ | 2100 rpm
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Frame
| Front Frame Structure - Height | 1 ft (0 m)
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| Front Frame Structure - Width | 1 ft (0 m)
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Front Axle
| Ground Clearance | 2 ft (1 m)
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| Oscillation - Total | 32 degrees
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| Wheel Lean | 14.5 degrees
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Hydraulic System
| Pump Type | Double-acting piston-type hydraulic cylinders
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| Relief Valve Pressure | 3560 psi
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Moldboard
| Blade Pull at Max Weight | 30,250 lbs (13,721 kg)
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| Max Depth of Cut | 19 in (48 cm)
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| Moldboard Height | 31 in (79 cm)
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| Moldboard Thickness | 1 in (3 cm)
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| Moldboard Width | 16 ft (5 m)
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Operating Specifications
| Alternator Supplied Amperage | 50 amps
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| Cooling System Fluid Capacity | 15 gal (58 l)
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| Fuel Capacity | 132 gal (500 l)
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| Hydraulic System Fluid Capacity | 21 gal (80 l)
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| Max Operation Weight - Front Axle | 17,570 lbs (7,970 kg)
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| Max Operation Weight - Rear Axle | 40,680 lbs (18,452 kg)
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| Max Operation Weight - Total | 58,250 lbs (26,422 kg)
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| Oil System Fluid Capacity | 10 gal (38 l)
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| Operating Voltage | 24 volts
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| Tandem Case Fluid Capacity (each) | 50 gal (190 l)
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| Tire Size | 23.5 X 25-12PR (L3) tires
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| Transmission Fluid Capacity | 7 gal (25 l)
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Steering System
| Articulation Angle | 25 degrees
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| Turning Radius | 26 ft (8 m)
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Transmission
| Max Speed - Forward | 28 mph (45 kph)
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| Max Speed - Reverse | 30 mph (48 kph)
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| Number of Gears - Forward | 8
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| Number of Gears - Reverse | 8
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| Transmission Type | komatsu HYDROSHIFT Transmission
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Weights
| Operating Weight - On front wheels | 17,571 lbs (7,970 kg)
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| Operating Weight - On rear wheels | 40,521 lbs (18,380 kg)
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| Total Operating Weight | 58,092 lbs (26,350 kg)
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