• Engine

    ModelKomatsu SAA6D140E-5
    Type4-cycle, water-cooled, direct injection
    AspirationTurbocharged, after-cooled, cooled EGR
    Number of Cylinders6
    bore x stroke140 mm x 165 mm
    Horsepower, Gross - SAE J1995268 kW / 360 HP
    Horsepower, Net - ISO 9249 / SAE J1349264 kW / 354 HP
    Rated RPM1900
    Piston displacement15.24 ltr
    Fan drive typeHydraulic
    Lubrication systemGear pump
    Emissions certificationEPA Tier 3
  • Hydraulic System

    TypeClosed-centre load sensing system
    Maximum pump flow325 ltr/min
    Relief valve setting - For implement280 kg/cm2
    Relief valve setting - For steering390 kg/cm2
    Hydraulic cylinderNo. of cylinders x bore
    Blade lift2 x 110 mm
    Blade tilt1 x 160 mm
    Ripper lift1 x 180 mm
    Ripper tilt1 x 200 mm
  • Torqflow transmission

    Komatsu’s automatic TORQFLOW transmission consists of a watercooled, 3-element, 1-stage, 1-phase torque converter with lockup clutch, and a planetary gear, multiple-disc clutch transmission which is hydraulically actuated and force-lubricated for optimum heat dissipation. Gearshift lock lever and neutral safety switch prevent machine from accidental starts.

    Travel speeds 
    Forward0 - 11.6 km/h
    Reverse0 - 14 km/h
  • Final drives

    Double-reduction, spur and planetary final drives increase tractiveeffort. Segmented sprockets are bolt-on for easy in-the-field replacement.

  • Steering system

    PCCS lever controls for all directional movements. Pushing the PCCS lever forward results in forward machine travel, while pulling it rearward reverses the machine. Simply tilt the PCCS lever to the left to make a left turn. Tilt it to the right for a right turn. Hydrostatic steering system (HSS) is powered by steering planetary units and an independent hydraulic pump and motor. Counterrotation turns are also available.Wet, multiple-disc, pedal-controlled service brakes are spring-actuated and hydraulically released. Gearshift lock lever also applies parking brakes.

    TypeHydrostatic Steering system
    Minimum turning radius2.14 m
  • Undercarriage

    SuspensionOscillating equaliser bar and forward pivot shaft
    Track roller frameMonocoque, large section, durable construction
    Rollers and idlersLubricated track rollers
    Number of track rollers (each side)7
    Number of shoes (each side)42
    Number of carrier rollers (each side)2
    Shoe width560 mm
  • Coolant & Lubricant capacity

    Coolant82 ltr
    Fuel tank625 ltr
    Engine oil37 ltr
    Final drive (each side)31 ltr
    Transmission, bear gear, and steering system90 ltr
    DEF tankNone
  • Weights

    Operating weight39,500 kg

D155AX-6 Dozers

This 40.83 tonne bulldozer offers a choice of Sigma and semi-U blades, making it suitable for a wide range of applications, including civil construction, agriculture, waste management and other sectors.

As with all our dozers, key components are designed and manufactured by Komatsu to work together in an integrated package.
Innovative SIGMADOZER reduces digging resistance and demonstrates smooth material roll up to increase blade load. 

Automatic transmission with lockup torque converter increases speed and power to improve fuel consumption and productivity.
To minimize noise and vibration, the engine is mounted to the main frame with rubber cushions.
Preventative maintenance is the only way to ensure long service life from your equipment. That’s why Komatsu designed the D155AX-6 dozer with conveniently located maintenance points to make necessary inspections and maintenance quick and easy.

And the dozer comes standard with our Komtrax remote monitoring and location system, backed by our Australia-wide service and support network.

For new and used dozers for sale request a quote below.

  • 264 kW / 354 HP
  • 39,500 kg
  • 9.4 m³

Current Offers

Ergonomic Control System

Palm command travel joystick provides the operator with a relaxed posture and superb fine control without operator fatigue. Transmission gear shifting is simplified with thumb push buttons.

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