2023 Komatsu Dozers D475A-8
- Year 2023
- Make Komatsu
- Model Dozers
- Engine Model: SAA12V140E-7 | Fan drive type: Hydraulic
2023 Komatsu Dozers D475A-8
2023 Komatsu Dozers D475A-8
Strength and performanceWhen 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:
- Up to 10% productivity increase over previous models
- Over 11% more engine power in the reverse direction versus the forward direction
- 10% reduction in fuel consumption with automatic transmission with lockup torque converter compared to operation in manual gearshift mode
- 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.
- 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.
- The D475A-8 features a more reliable mainframe with twice the design life over previous models, designed to reduce maintenance costs and machine downtime.
- Designed to increase dozing efficiency while reducing operator efforts with blade auto-pitch mode.
- 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.
- Track shoe slip control automatically controls engine speed and minimizes slip during ripping operation, so your operator doesn’t have to.
- Designed to maximize operator comfort and productivity with thoughtful design enhancements like an upgraded cab suspension and palm control joysticks.
- Significantly reduced blade side sway with an all-new blade support structure. The new support structure has fewer maintenance points with enhanced visibility over previous models.
- The D475A-8 is engineered to minimize planned downtime and make maintenance efficient with features such as centralized greasing points, ground-level fill/evac service center and battery and starter isolators with lockout tagout functionality.
Engine
Engine Manufacturer
Komatsu
Engine
Model: SAA12V140E-7 | Fan drive type: Hydraulic
Engine Type
4-cycle, water-cooled, direct injection
Aspiration
Turbocharged, air-to-air charge air cooler, cooled EGR
Cylinder Liners
12
Bore
5.51 in
Stroke
6.50 in
Displacement
Piston: 1,860 in³
Engine Power
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
Rated Engine Speed
2,000 rpm
Lubrication
Method: Gear pump, force lubrication | Filter: Full-flow
Drivetrain
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: 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
Drive System
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.
Steering
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.
Suspension
Suspension
Oscillating equalizer bar and pivot shaft
Operational
Ground Pressure
19.35 psi | (Tractor): 16.71 psi | Extreme service shoes 32 in : 17.1 psi | Extreme service shoes 36 in : 15.4 psi
Hydraulics
Hydraulic Type
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) | Additional control valve required for variable digging angle multi-shank ripper and giant ripper. Positions: (Ripper lift: Raise, hold, and lower / Ripper tilt: Increase, hold, and decrease)
Maximum Pressure
Relief valve setting (for implement): 3,983 psi
Chassis
Frame Type
Track roller frame: Cylindrical, high-tensile-strength steel construction
Dimensions
Turning Radius
Minimum: 15 ft. 1 in
Height
Grouser (Single grouser): 4.1 in
Width
Shoe width (Standard): 28 in
Dimensions
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
Bore
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)
Capacities
Fuel Capacity
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
Cooling System
70 US gal
Hydraulic Capacity
oil (Refill): Semi-U dozer or U dozer 50.2 US gal
Volume
Ripper equipment (Additional volume): Giant ripper 34.3 US gal | Ripper equipment (Additional volume): Multi-shank ripper (variable) 34.3 US gal
Weights
Weight
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. | Extreme service shoes 32 in Additional weight: 2,028 lbs. | Extreme service shoes 36 in Additional weight: 4,034 lbs.
Weight, In Running Order
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.
Features
Features
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