2025 Komatsu Dozers D475A-8

Information

2025 Komatsu Dozers D475A-8

Strength and performance

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.

Features may include:

Lockup torque converter
  • Engineered for exceptional production. Komatsu’s lockup torque converter produces a more efficient transfer of power to the driveline, designed to help decrease cycle times and increase production.
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.
Blade auto-pitch
  • Designed to increase dozing efficiency while reducing operator efforts with blade auto-pitch mode.
Ripper auto-return
  • The new, ergonomic ripper control lever incorporates an auto-return function designed for less fatiguing operation, automatically raising the ripper after momentarily actuating the control lever while the machine is in reverse.

Photos

Highlights

  • Bushnell, Florida
  • 2025
  • Komatsu
  • Dozers D475A-8
  • Fan drive type: Hydraulic
  • 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: 1st: 2.1 mph / 2nd: 3.9 mph / 3rd L: 4.6 mph / 3rd: 7.2 mph | Gear Reverse: 1st: 2.7 mph / 2nd: 5.2 mph / 3rd L: 5.6 mph / 3rd: 8.9 mph
  • Available
  • Shoe width (Standard): 28 in
  • Grouser (Single grouser): 4.1 in

Specifications

  • 2025
  • Komatsu
  • Dozers
  • D475A-8
  • Large
  • Fan drive type: Hydraulic
  • Komatsu SAA12V140E-7
  • 4-cycle, water-cooled, direct injection
  • Turbocharged, air-to-air charge air cooler, cooled EGR
  • 12
  • cylinders Double-acting, piston: (Blade lift Number of cylinders: 2/ Bore: 7.1 in | Blade Tilt (Single tilt) Number of cylinders: 1/ Bore: 9.8 in | Blade Tilt (Dual tilt) Number of cylinders: 2/ Bore: 9.8 in | Ripper lift Number of cylinders: 2/ Bore: 8.9 in | Ripper tilt Number of cylinders: 2/ Bore: 8.9 in)
  • 6.50 in
  • Piston: 1,860 in³
  • SAE J1995 - Gross Forward: 934 HP | SAE J1995 - Gross Reverse: 1,040 HP | ISO 9249 / SAE J1349* - Net Forward: 890 HP | ISO 9249 / SAE J1349* - Net Reverse: 968 HP | Net horsepower at the maximum speed of radiator cooling fan Forward: 860 HP | Net horsepower at the maximum speed of radiator cooling fan Reverse: 968 HP
  • 2,000 rpm
  • Method: Gear pump, force lubrication | Filter: Full-flow
  • 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: 1st: 2.1 mph / 2nd: 3.9 mph / 3rd L: 4.6 mph / 3rd: 7.2 mph | Gear Reverse: 1st: 2.7 mph / 2nd: 5.2 mph / 3rd L: 5.6 mph / 3rd: 8.9 mph
  • 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.
  • 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.
  • Oscillating equalizer bar and pivot shaft
  • 19.35 psi | (Tractor): 16.71 psi | Extreme service shoes 32 in : 17.1 psi | Extreme service shoes 36 in : 15.4 psi
  • 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 (142.9 US gpm) for implement at rated engine rpm. | Control valves: Spool control valves for Semi-U tilt dozer and Full-U tilt dozer. Positions: (Blade lift: Raise, hold, lower, and float / Blade tilt: Right, hold, and left)
  • Relief valve setting (for implement): 3,983 psi
  • Track roller frame: Cylindrical, high-tensile-strength steel construction
  • Ground contact area: 9,957 in² | Extreme service shoes 32 in Ground contact area: 11,360 in² | Extreme service shoes 36 in Ground contact area: 12,763 in²
  • Minimum: 15 ft. 1 in
  • Grouser (Single grouser): 4.1 in
  • Shoe width (Standard): 28 in
  • tank: 507.2 US gal | Engine: 31.7 US gal | Torque converter, transmission, bevel gear, and steering system: 55.5 US gal | Final drive (Each side): 19.8 US gal
  • 70 US gal
  • oil (Refill): Semi-U dozer or U dozer 50.2 US gal
  • Tractor: Including rated capacity of lubricant, coolant, full fuel tank, operator, and 710 mm (28 in) shoe, less front and rear attachments.: 194,450 lbs.
  • Operating: 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 (32 in) track shoes.: 254,195 lbs.
  • Rollers and idlers: Lubricated track rollers | Komatsu Bogie (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 | Number of track rollers: 8 | Number of carrier rollers: 2