United States - English

Current number of specifications

Komatsu HM300-2 Articulated Dump Truck

Selected Dimensions

A. Overall Length34.3 ft in10440 mm
B. Overall Width9.5 ft in2900 mm
C. Overall Height11.5 ft in3520 mm
E. Ground Clearance1.7 ft in510 mm


Steering System
TypeArticulated type, fully hydraulic power steering with two double-acting cylinders
Supplementary steeringAutomatically actuated electrically powered
Minimum turning radius, wall to wal7.96 m 26'1"
Articulation angle45°each direction
Electrical System
Alternator24V, 75 Ah.
Batteries12V, 136 Ah x 2.
Starter motor24V, 11.0 kW.
Suspension System
RearCombined hydro-pneumatic and rubber suspension system
FrontHydro-pneumatic suspension
Main Frame
TypeArticulated type, box-sectioned construction on front and rear Connected by strong torque tubes.
Capacity Struck16.9 yd312.9 m3
Heaped (2:1, SAE)21.7 yd316.6 m3
Payload27.3 metric tons 30.1 U.S. tons
Material130 kg/mm2 184,925 psi high tensile strength steel
Material thickness-Bottom0.55 in14 mm
Material thickness-Front0.31 in7.9 mm
Material thickness-Sides0.47 in11.9 mm
Target area5240 mm x 2685 mm 17'2" x 8'10"
HeatingExhaust heating (option)
Number of Cylinders6
ModelKomatsu SAA6D125E-5
TypeWater-cooled, 4-cycle
Gross Power340 hp254 kw
LubricationMethod- Gear pump, force-lubrication Filter-Full-flow type
Air cleanerDry type with double elements and precleaner (cyclonpack type), plus dust indicator EPA Tier 3 and EU Stage 3A emissions certified
GovernorElectronically controlled
Net Power329 hp246 kw
Power Measured @2000 rpm
Displacement674 cu in11 L
AspirationTurbo-charged, after-cooled, cooled EGR
Bore4.9 in125 mm
Stroke5.9 in150.4 mm
Fan drive typeMechanical
Fuel systemDirect injection
Maximum torque174 kg•m 1,259 lb. ft
Fuel Tank - diesel101.5 gal384.2 L
Final Drive6.3 gal23.8 L
Hydraulic system31.7 gal120 L
Engine Oil9.8 gal37.1 L
Torque converter, transmission and retarder cooling20.5 gal77.6 L
Differentials16.8 gal63.6 L
Suspension2.7 gal10.2 L
Travel Speed36.4 mph58.6 km/h
Torque converter3-elements, 1-stage, 2-phase
TransmissionFull-automatic, counter-shaft type
Speed range6 speeds forward and 2 reverse
Lockup clutchWet, single-disk clutch
ForwardTorque converter drive in 1st gear, direct drive in 1st lockup and all higher gears
ReverseTorque converter drive and direct drive in all gear
Shift controlElectronic shift control with automatic clutch modulation in all gear
Gross Weight113360 lb51419.2 kg
Empty Weight53000 lb24040.4 kg
Center Axle - empty23.6 %
Front Axle - empty55.8 %
Rear Axle - empty20.6 %
Front Axle - loaded30.3 %
Center Axle - loaded35.5 %
Rear Axle - loaded34.2 %
Standard tire23.5 R25
Hydraulic System
Hoist cylinderTwin, 2-stage telescopic type
Relief pressure20.6 MPa 210 kg/cm2 2,990 psi
Hoist time12 sec
ComplianceDimensions comply with ISO 3471 ROPS (Roll-Over Protective Structure) standard
Service brakeFull-hydraulic control, oil-cooled multiple-disc type on front and center axles
Parking brakeSpring applied, caliper disc type
RetarderFront and center axle brakes act as retarder
Overall Length34.3 ft in10440 mm
Overall Width9.5 ft in2900 mm
Overall Height11.5 ft in3520 mm
Ground Clearance1.7 ft in510 mm
Tyre gauge7.5 ft in2280 mm
Turning radius – outside minimum26.1 ft in7950 mm