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Komatsu HD320-3 Off-Highway Truck


Dump Ground Clearance1.5 ft
Dump Height24.7 ft
Ground Clearance1.6 ft
Overall Height12.7 ft
Overall Length25.1 ft
Overall Width12.1 ft
Wheelbase12.4 ft


Dump Angle61 deg
Load Capacity - heaped31.4 cu yd
Rated Payload61 deg


Displacement855 cu in
Engine ModelNTA855
Gross Power405 hp
Rated Engine Speed29.1 rpm
Torque Measured @turbocharged rpm

Operating Specifications

Alternator Supplied AmperageKomatsu TORQFLOW planetary gear
Cooling System Fluid Capacity35.2 gal
Diff and Final Drive Fluid Capacity18.8 gal
Engine Oil Capacity6.7 gal
Fuel Capacity132.1 gal
Hydraulic System Fluid Capacity29.1 gal
Tire Size18.00-25-32

Service Refill Capacities

Brake/Hoist Hydraulic Tank64000 gal


Max Speed38.6 mph
Number of Gears - Forward6
Number of Gears - Reverse1
Transmission TypeKomatsu TORQFLOW planetary gear


Empty Weight56769.1 lbs
Loaded Weight127317 lbs
Weight Distribution Front - empty48%
Weight Distribution Front - loaded32%
Weight Distribution Rear - empty52%
Weight Distribution Rear - loaded68%

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39.04690 \\ -77.49030 \\ Ashburn \\ PA