• Engine

    Model Komatsu SAA12V140E-7
    Type Four-cycle, water-cooled, direct injection
    Aspiration Turbocharged, air-to-air charge air cooler, cooled EGR
    Number of cylinders 12
    Bore x stroke 140 mm x 165 mm
    Displacement 30.48 ltr
    Horsepower, Gross - SAE J1995 671 kW / 899 HP
    Horsepower, Net - ISO 9249 / SAE J1349 664 kW / 890 HP
    Rated RPM 2000
    Fan drive method Hydraulic
    Emissions certification EPA Tier 4
  • Coolant & Lubricant Capacity

    Fuel tank 2305 ltr
    Coolant 318 ltr
    Engine 144 ltr
    Torque converter, transmission, bevel gear, and steering system 252 ltr
    Final drive (each side) 90 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 teeth 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. Variable piston pump with capacity (discharge flow) of 541 L/min for implement at rated engine rpm.
    Relief valve setting 27.5 MPa
    280 kg/cm²
    Control Valves:
    Spool control valves for Semi-U tilt dozer and Full-U tilt dozer.
    Blade lift Raise, hold, lower, and float
    Blade tilt Right, hold, and left
    Hydraulic Cylinders:
    Type Double-acting, piston
    Number of blade lift cylinders 2
    Blade lift cylinder bore 180 mm
    Number of blade tilt and pitch cylinders 2
    Blade tilt and pitch cylinder bore 250 mm
    Hydraulic Oil Capacity (Additional Volume):
    Semi-U dozer or U dozer 228 ltr
  • Operating Weight

    Tractor weight Including rated capacity of lubricant, coolant, full fuel tank, operator, and 710 mm shoe, less front and rear attachments. 88201 kg
    Operating weight Includes dual tilt U dozer, giant variable ripper, cab, ROPS (ISO 3471), operator, standard equipment, rated lubricant volumes, coolant, full fuel 
    tank and 810 mm track shoes.
    113200 kg
    Ground pressure 115300 kg/cm² / 17237 kPa
  • Steering System

    Palm Command Control System (PCCS), joystick controlled, wet multiple-disc steering clutches are spring-loaded and hydraulically released. Wet multiple-disc, pedal/lever controlled steering brakes are spring-actuated hydraulically released and require no adjustment. Steering clutches and brakes are interconnected for easy, responsive steering.

    Minimum turning radius 4.6 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 3.3 km/h 4.3 km/h
    2nd 6.3 km/h 8.4 km/h
    3rd 11.6 km/h 14.3 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) 41
    Grouser height - single grouser 104 mm
    Shoe width (standard) 711 mm
    Ground contact area 64239 cm2
    Ground pressure (tractor) 115 kPa / 1.17 kg/cm²
    Number of track rollers 8
    Number of carrier rollers 2
    Extreme service shoes: Ground contact area: Ground pressure:

    813 mm

    Additional weight - 920 kg

    73290 cm² 117 kPa / 1.2 kg/cm²


    Additional weight - 1830 kg

    82341 cm² 106 kPa / 1.1kg/cm²

D475A-8 Dozers

When you need a versatile mining dozer that can go from ripping solid rock to cleaning up around the dragline, the Komatsu D475A-8 is a solid choice. Using an automatic lockup torque converter, the D475A-8 combined power and speed is designed for high production with minimal fuel consumption.

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

  • 664 kW / 890 HP
  • 115,300 kg
  • 45 m³

Low undercarriage design

Equipped with a low drive undercarriage designed to help reduce wear and tear on your machine while still delivering comfort and stability. Minimal moving parts to help maintain high levels of traction and production when dozing and ripping.

Structural improvements

The D475A-8 features a more reliable mainframe with twice the design life over previous models, designed to reduce maintenance costs and machine downtime.

Track shoe slip control

Track shoe slip control automatically controls engine speed and minimises slip during ripping operation, so your operator doesn’t have to.

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