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Komatsu GD825A-2 specifications

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Komatsu GD825A-2: motor grader.

Selected configuration figures
ConfigurationDocumented field and quantity
GD825A-2
Max Power
280 hp
Operating Weight - On Rear Wheels
40,521 lb
GD825A-2 specification matrix — Dimensions and weight
SpecificationGD825A-2
Overall Length32.85 ft
Width Over Tires10.86 ft
Wheelbase23.4 ft
Tandem Axle Wheelbase6 ft
Blade Base10.18 ft
Height To Top Of Isomount Cab11.67 ft
Minimum Turning Radius25.92 ft
Articulation Angle25 degrees
Engine
SpecificationGD825A-2
Number Of Cylinders6
Piston Displacement408.3 cu in
Engine ModelS6D140E
Power Measured @2,100 rpm
Max Power280 hp
Net Power Gears 7-8280 hp
Displacement359 cu in
AspirationTurbocharged Diesel engine
Frame
SpecificationGD825A-2
Front Frame Structure - Height1.4 ft
Front Frame Structure - Width1.2 ft
Capacities
SpecificationGD825A-2
Fuel Tank - Diesel132.1 gal
Hydraulic Tank21.2 gal
Transmission6.7 gal
Final Drive16.7 gal
Tandem Housing50.2 gal
Engine Oil10.1 gal
Coolant15.4 gal
Operational
SpecificationGD825A-2
Hydraulic System Fluid Capacity21.1 gal
Max Operation Weight - Front Axle17,570 lb
Max Operation Weight - Rear Axle40,680 lb
Oil System Fluid Capacity10.1 gal
Max Operation Weight - Total58,250 lb
Fuel Capacity132.1 gal
Cooling System Fluid Capacity15.3 gal
Transmission Fluid Capacity6.6 gal
Tandem Case Fluid Capacity (Each)50.2 gal
Tire Size23.5 X 25-12PR (L3) tires
Operating Voltage24 V
Alternator Supplied Amperage50 amps
Steering
SpecificationGD825A-2
Turning Radius26 ft
Transmission and speeds
SpecificationGD825A-2
Transmission Typekomatsu HYDROSHIFT Transmission
Number Of Gears - Forward8
Number Of Gears - Reverse8
Max Speed - Forward27.9 mph
Max Speed - Reverse29.8 mph
Weights
SpecificationGD825A-2
Operating Weight - On Rear Wheels40,521 lb
Total Operating Weight58,092 lb
Operating Weight - On Front Wheels17,571 lb
Front Axle
SpecificationGD825A-2
Wheel Lean14.5 degrees
Oscillation - Total32 degrees
Ground Clearance2.3 ft
Blade
SpecificationGD825A-2
Maximum Shoulder Reach Outside Rear Tyres (Frame Straight): Right7.9 ft
Maximum Shoulder Reach Outside Rear Tyres (Frame Straight): Left7.9 ft
Maximum Lift Above Ground1.4 ft
Blade Tip Angle49° forward, 5 ° reverse
Moldboard
SpecificationGD825A-2
Moldboard Width16.2 ft
Moldboard Height31 in
Moldboard Thickness1 in
Max Depth Of Cut19 in
Blade Pull At Max Weight30,250 lb
Hydraulic System
SpecificationGD825A-2
Pump TypeDouble-acting piston-type hydraulic cylinders
Relief Valve Pressure3,560 psi
Circle
SpecificationGD825A-2
Diameter70 in
Rotation360 degrees
Max Reach Outside Tires - Left94 in
Max Reach Outside Tires - Right94 in
Max Lift Above Ground19 in
Blade Tip Angle - Front49 degrees
Blade Tip Angle - Rear5 degrees
Ratios
FigureGD825A-2
Engine horsepower per 1,000 lb of weight4.8
Fuel tank per engine horsepower0.47 gal
Reference directory classification
Equipment groupmotor grader
Where the GD825A-2 ranks in Komatsu's list — Scope of the captured comparison
BrandEquipment groupCompared entrySort order
Komatsumotor graderGD825A-2Descending quantity; 1 is largest
FigureGD825A-2RankLowest in lineHighest in line
Engine power280.0 hp1 of 1065.0 hp280.0 hp
Listed weight58,092 lb1 of 1011,244 lb58,092 lb
Fuel capacity132.1 gal1 of 534.4 gal132.1 gal
Horsepower per 1,000 lb4.8 hp8 of 104.7 hp5.8 hp
Moldboard width16.2 ft1 of 107.3 ft16.2 ft

The GD825A-2 beside its neighbours

Base versionGD705A-4GD825A-2
Engine power199.9 hp280 hp
Weight38,846 lb58,092 lb
Fuel capacity105.7 gal132.1 gal
Wheelbase21.17 ft23.4 ft
Moldboard width14.2 ft16.2 ft
GD825A-2: forum references — Forum-title search
Forum indexEquipment class queriedNames in the searchMatching titles
Heavy Equipment Forumsmotor graderKomatsu and the GD825 line that the GD825A-2 belongs to (no title names the exact model). That is too few titles to say what owners mostly ask about, so the most recent are listed instead1
Used market for the GD825A-2 — Dated first-page listing snapshot
Observation dateListing sourceEquipment searchListings
2026-09-24MachineryTraderKomatsu motor grader2
ModelListedModel yearsLowest askingHighest askingMedian askingMedian hours
GD825A-222010None shownNone shownNone shownNone shown
GD825A-2: recall reference — Dated CPSC search
Search dateDatabaseNames queriedSearch result
2026-09-24U.S. Consumer Product Safety CommissionKomatsu together with the motor grader GD825A-2No matching recall in this search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
Forum threads
Used-market listings
Federal agency data

Komatsu GD825A-2 questions

Dated listing search without advertised prices
DateListing indexEquipment classNames queriedListingsPrice observation
2026-09-24MachineryTradermotor graderGD825A-22No prices shown in this snapshot

Komatsu GD825A-2: Configuration records

GD825A-2
SpecificationSource figure
Dimensions and weight
Overall Length32.85 ft
Width Over Tires10.86 ft
Wheelbase23.4 ft
Tandem Axle Wheelbase6 ft
Blade Base10.18 ft
Height To Top Of Isomount Cab11.67 ft
Minimum Turning Radius25.92 ft
Engine
Engine ModelS6D140E
Max Power280 hp
Displacement359 cu in
Number Of Cylinders6
Piston Displacement408.3 cu in
AspirationTurbocharged Diesel engine
Power Measured @2,100 rpm
Net Power Gears 7-8280 hp
Frame
Front Frame Structure - Height1.4 ft
Front Frame Structure - Width1.2 ft
Capacities
Fuel Tank - Diesel132.1 gal
Transmission6.7 gal
Final Drive16.7 gal
Tandem Housing50.2 gal
Hydraulic Tank21.2 gal
Engine Oil10.1 gal
Coolant15.4 gal
Weights
Operating Weight - On Rear Wheels40,521 lb
Total Operating Weight58,092 lb
Operating Weight - On Front Wheels17,571 lb
Front Axle
Wheel Lean14.5 degrees
Oscillation - Total32 degrees
Ground Clearance2.3 ft
Blade
Maximum Shoulder Reach Outside Rear Tyres (Frame Straight): Right7.9 ft
Maximum Shoulder Reach Outside Rear Tyres (Frame Straight): Left7.9 ft
Maximum Lift Above Ground1.4 ft
Blade Tip Angle49° forward, 5 ° reverse
Hydraulic System
Pump TypeDouble-acting piston-type hydraulic cylinders
Relief Valve Pressure3,560 psi
Moldboard
Moldboard Width16.2 ft
Moldboard Height31 in
Moldboard Thickness1 in
Max Depth Of Cut19 in
Blade Pull At Max Weight30,250 lb
Circle
Max Reach Outside Tires - Left94 in
Max Reach Outside Tires - Right94 in
Max Lift Above Ground19 in
Diameter70 in
Rotation360 degrees
Blade Tip Angle - Front49 degrees
Blade Tip Angle - Rear5 degrees
Operational
Tire Size23.5 X 25-12PR (L3) tires
Fuel Capacity132.1 gal
Hydraulic System Fluid Capacity21.1 gal
Max Operation Weight - Front Axle17,570 lb
Max Operation Weight - Rear Axle40,680 lb
Oil System Fluid Capacity10.1 gal
Max Operation Weight - Total58,250 lb
Cooling System Fluid Capacity15.3 gal
Transmission Fluid Capacity6.6 gal
Tandem Case Fluid Capacity (Each)50.2 gal
Operating Voltage24 V
Alternator Supplied Amperage50 amps
Steering
Turning Radius26 ft
Transmission and speeds
Transmission Typekomatsu HYDROSHIFT Transmission
Number Of Gears - Forward8
Number Of Gears - Reverse8
Max Speed - Forward27.9 mph
Max Speed - Reverse29.8 mph
Additional specifications
Articulation Angle25 degrees

Source

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