• Engine

    Model Komatsu SAA6D140E-5
    Type Four-cycle, water-cooled, direct injection
    Aspiration Turbo-charged, after-cooled, cooled EGR
    Number of cylinders 6
    Bore x stroke 140 mm x 165 mm
    Displacement 15.24 ltr
    Horsepower, Gross - SAE J1995 337 kW / 452 HP
    Horsepower, Net - ISO 9249 / SAE J1349 335 kW / 449 HP
    Rated RPM 2000
    Fan drive method Hydraulic
  • Coolant & Lubricant Capacity

    Fuel tank 840 ltr
    Coolant 100 ltr
    Engine 52 ltr
    Torque converter, transmission, bevel gear, and steering system 90 ltr
    Final drive (each side) 40 ltr
  • Final Drive

    Double-reduction final drive of spur and planetary gear sets to increase tractive effort and reduce gear tooth stresses for long final drive life. Segmented sprocket rims are bolt-on for easy replacement.

  • Hydraulic System

    Hydraulic Control Unit:
    Closed-center load sensing system (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.
    All spool control valves externally mounted beside the hydraulic tank. Plunger type hydraulic pump with capacity (discharge flow) of 230 ltr/min at rated engine rpm.
    Relief valve setting 27.5 MPa
    280 kg/cm²
    Control Valves:
    Spool control valves for SIGMADOZER, Semi-U tilt dozer and Full-U tilt dozer.
    Blade lift Raise, hold, lower, and float
    Blade tilt Right, hold, and left
    Additional control valve required for variable digging angle multi-shank ripper and giant ripper.
    Ripper lift Raise, hold, and lower
    Ripper tilt Increase, hold, and decrease
    Hydraulic Cylinders:
    Type Double-acting, piston
    Number of blade lift cylinders 2
    Blade lift cylinder bore 120 mm
    Number of blade tilt cylinders 1 (Single tilt), 2 (Dual tilt)
    Blade tilt cylinder bore 180 mm
    Number of ripper lift cylinders 2
    Ripper lift cylinder bore 180 mm
    Number of ripper tilt cylinders 2
    Ripper tilt cylinder bore 160 mm
    Hydraulic Oil Capacity (Refill):
    SIGMADOZER or Semi-U dozer or Full-U dozer 130 ltr
    Ripper Equipment (Additional Volume):
    Giant ripper 38 ltr
    Multi-shank ripper 38 ltr
  • Operating Weight

    Tractor weight Including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment. 37680 kg
    Operating weight Including Strengthened Dual tilt SIGMADOZER, giant ripper, steel cab, ROPS, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank. 51530 kg
    Ground pressure 1.21 kg/cm² / 119 kPa
  • Steering System

    Palm Command Control 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.
    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. Gear shift lock lever also applies parking brake.

    Minimum turning radius 3.9 m
  • Torqflow Transmission

    Komatsu TORQFLOW transmission consists of a water-cooled, 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 help prevent accidental starts.

    Gear Forward Reverse
    1st 3.6 km/h 4.7 km/h
    2nd 6.7 km/h 8.7 km/h
    3rd 11.2 km/h 14.9 km/h
  • Undercarriage

    Suspension Oscillating equaliser bar and pivot shaft
    Track roller frame Cylindrical, high-tensile-strength steel construction
    Rollers and idlers Lubricated track rollers
    K-Bogie undercarriage Lubricated track rollers are resiliently mounted to the track frame with a bogie suspension system whose oscillating motion is cushioned by rubber pads.
    Extreme service track shoes Lubricated tracks. Unique seals prevent entry of foreign abrasives into pin to bushing clearances to provide extended service life. Track tension is easily adjusted with grease gun.
    Number of shoes (each side) 39
    Grouser height - single grouser 88 mm
    Shoe width (standard) 610 mm
    Ground contact area 42456 cm2
    Ground pressure (tractor) 87.3 kPa / 0.89 kg/cm²
    Number of track rollers 7
    Number of carrier rollers 2
    Extreme service shoes: Ground contact area: Ground pressure:

    710 mm

    Additional weight - 570 kg

    49416 cm² 1.05 kg/cm² / 103 kPa

    760 mm

    Additional weight - 850 kg

    52896 cm² 0.99 kg/cm² / 97 kPa

D275AX-5E0 Dozers

Komatsu’s 51.5 tonne D275AX-5EO is designed for heavy construction, waste management, infrastructure works and any application requiring powerful dozing and ripping capabilities. As with all our dozers, key components are designed and manufactured by Komatsu to work together in an integrated package. And it comes standard with our KOMTRAX remote monitoring and location system, backed by our New Zealand-wide service and support network.

  • 335 kW / 449 HP
  • 51,530 kg
  • 13.7 m³

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