KOMATSU D475A-8
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2024
Komastu
D475A-8
New
Ontario
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.
- 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
Engine
| Model | Komatsu SAA12V140E-7 |
| Type | 4-cycle, water-cooled, direct injection |
| Aspiration | Turbocharged, air-to-air charge air cooler, cooled EGR |
| Number of cylinders | 12 |
| Bore x stroke | 5.51 x 6.50 in |
| Piston displacement | 1,860 in3 |
| Horsepower | |
| SAE J1995 | Gross: Forward 934 HP Reverse: 1,040 HP |
| ISO 9249/SAE J1349* | Net: Forward 890 HP Reverse 968 HP |
| Rated rpm | 2,000 rpm |
| Fan drive type | Hydraulic |
| Lubrication system | |
| Method | Gear pump, force lubrication |
| Filter | Full-flow |
| * Net horsepower at the maximum speed of radiator cooling fan |
Forward/reverse 860/968 HP |
| U.S. EPA Tier 4 Final emission certified |
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 | 2.1 mph | 2.7 mph |
| 2nd | 3.9 mph | 5.2 mph |
| 3rd L | 4.6 mph | 5.6 mph |
| 3rd | 7.2 mph | 8.9 mph |
Final drive
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 | 15 ft. 1 in |
Undercarriage
Suspension: Oscillating equalizer bar and pivot shaft
Track roller frame: Cylindrical, high-tensile-strength steel construction
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 | ||
| Grouser height: | |||
| Single grouser | 4.1 in | ||
| Shoe width (standard) | 28 in | ||
| Ground contact area* | 9,957 in² | ||
| Ground pressure (tractor)** | 16.71 psi | ||
| Number of track rollers | 8 | ||
| Number of carrier rollers | 2 | ||
| Extreme service shoes | Additional weight | Ground contact area* | Ground pressure** |
| 32 in | 2,028 lbs. | 11,360 in² | 17.1 psi |
| 36 in | 4,034 lbs. | 12,763 in² | 15.4 psi |
*Ground contact area calculated by track on ground, center idler to center sprocket
**Ground pressure calculated using ISO 16754
Coolant and lubricant capacity (refill)
| Fuel tank | 507.2 US gal |
| Coolant | 70 US gal |
| Engine | 31.7 US gal |
| Torque converter, transmission, bevel gear, and steering system | 55.5 US gal |
| Final drive (each side) |
Operating weight (approximate)
| Tractor | 194,450 lbs. |
| Including rated capacity of lubricant, coolant, full fuel tank, operator, and 710 mm (28 in) shoe, less front and rear attachments. | |
| Operating weight | 254,195 lbs. |
| 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. |
|
| Ground pressure* | 19.35 psi |
*Ground pressure calculated using ISO 16754
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 (142.9 US gpm) for implement at rated engine rpm. | |
| Relief valve setting | 3,983 psi |
| 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. | |
| (Spool control valves for variable digging angle multi-shank ripper and giant ripper.) | |
| Positions: | |
| ripper lift | Raise, hold, and lower |
| ripper tilt | Increase, hold, and decrease |
| Hydraulic cylinders | Double-acting, piston |
| Number of cylinders | Bore |
| Blade lift / 2 | 7.1 in |
| Blade tilt (single tilt) / 1 | 9.8 in |
| Blade title (dual tilt) / 2 | 9.8 in |
| Ripper lift / 2 | 8.9 in |
| Ripper tilt / 2 | 8.9 in |
| Hydraulic oil capacity (refill) | |
| Semi-U dozer or U dozer | 50.2 US gal |
| Ripper equipment (additional volume) | |
| Giant ripper | 34.3 US gal |
| Multi-shank ripper (variable) | 34.3 US gal |
Operator environment and equipment
- Air conditioner and heater with automatic climate control and defroster
- Back-up alarm
- Decelerator pedal
- Double wiper for cab door
- Horn, warning
- LED lighting package
- Access lamps (4)
- Additional cab mount (4)
- Front fender mount (2)
- High mount on hood (2)
- Rear fender mount (2)
- Ripper point light
- Lunch box holder
- Mirror, rearview
- Palm Command Control Steering (PCCS) system
- Provisions for power ladder installation
- Radio, AM/FM, AUX, bluetooth
- Rearview monitoring system
- ROPS (meets ISO 3471 standards)
- Weight: 1,634 lbs.
- Width: 6‘11“
- Height: 6‘3“ (compartment floor to ceiling)
- Seat
Air suspension, fabric, low back rest, head rest, heated and ventilated - Seat belt, 3” retractable
- Uninterupted power source for 3rd party system
Powertrain
- Auto/manual gearshift (3F/3R) TORQFLOW transmission
Torque converter with lock-up clutch - Alternator, 140 Amps, 24V
- Batteries, large capacity, 4 x 12 V, 160 Ah
- Circuit breaker panel w/ push button resets
- Dry-type air cleaner with dust evacuator and dust indicator
- Electrical engine oil and coolant heaters
- Engine intake precleaner
- Engine prelubrication system
- Final drive scraper, wear guard
- Hydraulically driven radiator fan, swing out, reversible
- Perforated side covers
- Radiator, fin and tube type, copper core
- Starting motors, 15 kW. (2 x 7.5 kW.), 24 V
- Steering, wet clutch and brake
Undercarriage
- Extreme service shoes with cold link assemblies
- 28” shoe width
- Hydraulic track adjusters
- Idler spring tensioner, additional preload
- Labryinth-type track rollers
- Segmented sprocket segments
- Track roller guards
Dozer equipment
- Hydraulics and cab controls for dual-tilt dozer equipment
Rear attachment
- Hydraulics and cab controls for giant variable ripper
Service and maintenance
- Anchor points for service lanyards
- Canister-type, remote breathers
- Centralized greasing (blade cylinder yoke and Ripper)
- Concentrated live oil sampling ports
- Engine emergency stop system
- Engine room light
- Electrical dust indicator
- Electrical engine oil level sensor
- Electrical hydraulic oil level sensor
- Fast fill fuel system
- Hinged underguards with front pull hoook
- Isolators, battery and starter
- Jump start recepticle
- Service fill and evacuation center, ground-level
Hyd. oil, eng. oil, T/M oil, and coolant - Platform with hand rails and toe boards
- PM service connectors
- Radiator site gauge
- Vandalisim protection kit (cover locks)
Technology
- Auto-idle stop system
- Auto-pitch blade control
- Autor-ripper return
- KOMTRAX PLUS® WITH Iridium + WIFI
- Track shoe slip control
Special arrangements
- Cold area arrangement (-30 C˚- +40 C˚)
- High altitude arrangement
- Mining specification
- MSHA regulation arrangement (dust)
- OSHA (USA) regulation arrangement
- Sandy and dusty area arrangement
Operator environment and equipment
- Finger Command Control (FCCS) steering system
- Power ladder
Undercarriage
- Extreme service shoes with cold link assemblies
- 32” shoe width
- 36” shoe width
Dozer equipment
- Blade Semi-U, stengthened dual-tilt, 35.6 yd³
- Blade Full-U, strengthened dual-tilt, 45.0 yd³
- Straight fame assembly, dual-tilit, less blade
Rear attachment
- Counterweight with hitch - 13,395 lbs.
- Counterweight, additional with hitch - 14,509 lbs.
- Ripper assembly, giant variable, long protector
- Variable, single shank ripper ideal for tough ripping applications. Ripping angle is variable. Ripping depth is adjustable with a hydraullically controlled pin-puller
- Weight: 15,895 lbs.
- Beam length: 4’11”
- Maximum lift above ground: 4’0”
- Maximum digging depth: 6’1”
- Ripper Assembly, multi-shank
- Three shank assembly with hydrualically controlled lift and tilt functionality.
- Weight: 21,430 lbs.
- Beam length: 10’1”
- Maximum lift above ground: 4’0”
- Maximum digging depth: 4’1”