• Engine

    ModelKomatsu SAA12V140E-3
    TypeFour-cycle, water-cooled, direct injection
    AspirationTurbo-charged, after-cooled
    Number of cylinders12
    Bore x stroke140 mm x 165 mm
    Displacement30.48 ltr
    Horsepower, Gross - SAE J1995895 kW / 1200 HP
    Horsepower, Net - ISO 9249 / SAE J1349879 kW / 1178 HP
    Rated RPM1900
    Fan drive methodMechanical
    Emissions certificationEPA Tier 2
  • Axles

    Rear axleFull-floating
    Final drive typePlanetary gear
  • Body

    Capacity, struck40 m3
    Capacity, heaped (2:1 SAE)60 m3
    Payload91700 kg
    Target area (inside length x width)7070 mm x 5150 mm
    HeatingExhaust heating
    Material400 Brinell hardness high tensile strength steel
    Material thickness:
    Bottom19 mm
    Front12 mm
    Sides9 mm
  • Brakes

    Service brake - frontFull-hydraulic control, oil-cooled, multiple-disc type
    Service brake - rearFull-hydraulic control, oil-cooled, multiple-disc type
    Parking brakeSpring applied, multiple-disc type (actuates on all wheels)
    RetarderOil cooled, multiple-disc front and rear brakes act as retarder
    Secondary brakePedal operation. When hydraulic pressure drops below rated level, parking brake automatically actuated
    Brake surface: 
    Front37467 cm2
    Rear72414 cm2
  • Cab

    Standard ISO3471 (ROPS) ISO3449 (FOPS)
  • Hydraulic System

    Hoist cylinderTwin, two-stage telescopic type
    Relief pressure 20.6 MPa 210 kg/cm2
    Hoist time 
    Raise13 sec
    Lower14 sec
  • Main Frame

    TypeBox-sectioned structure. Integral front bumper
  • Service Refill Capacities

    Fuel tank1308 ltr
    Engine oil129 ltr
    Torque converter, transmission and retarder cooling205 ltr
    Differential137 ltr
    Final drives (total)128 ltr
    Hydraulic system175 ltr
    Brake control36 ltr
    Suspension (total)93 ltr
  • Steering System

    TypeFully hydraulic power steering with two double-acting cylinders
    Supplementary steeringMeets ISO5010, SAEJ1511
    Minimum turning radius10.1 m
    Maximum steering angle41°
  • Suspension System

    Independent , hydro-pneumatic suspension cylinder with fixed throttle to dampen vibration

    Effective cylinder stroke: 
    Front suspension320 mm
    Rear suspension127 mm
    Rear axle oscillation6.5°
  • Transmission

    Torque converter3-elements, 1-stage, 2-phase
    TransmissionFull-automatic, planetary-gear type
    Speed range7 forward and 2 reverse (RH, RL)
    Lockup clutchWet, multiple-disc clutch
    ForwardTorque converter drive in 1st gear, direct drive in 1st lockup and all higher gears
    ReverseTorque converter drive, direct drive (lockup)
    Shift controlElectronic shift control with automatic clutch modulation in all gears
    Maximum travel speed65 km/h
  • Tyres

    Standard tyre27.00 R49
  • Weight (Approximate)

    Empty and Gross Weight:

    Empty weight 72000 kg
    Gross vehicle weight 163780 kg



    Weight Distribution:

    Front axle 47%
    Rear axle 53%
    Front axle 31.4%
    Rear axle 68.6%

HD785-7 Dump Trucks

Our 91 tonne capacity mechanical drive HD785-7 offers the highest brake retardation in its class, along with Komatsu’s advanced transmission system for greater safety in all types of mining applications. As with all our trucks, key components are designed and manufactured by Komatsu to work together in an integrated package. And it comes standard with our Komtrax Plus remote monitoring and location system, backed by our Australia-wide service and support network.

  • 879 kW / 1,178 HP
  • 163,780 kg
  • 91,700 kg

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