Surface mining dozer

D475A-8

Horsepower 664 kW @ 2 000 rpm 890 HP @ 2,000 rpm
Operating weight 115 300 kg 254,195 lbs.
Blade capacity 27.2 - 34.4 m³ 35.6 - 44.5 yd³

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Overview
Specifications
Service and support
Technology
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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

Features and benefits

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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.

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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.

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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.

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Track shoe slip control

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

Operator comfort

Designed to maximize operator comfort and productivity with thoughtful design enhancements like an upgraded cab suspension and palm control joysticks.

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Single blade linkage

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.

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Maintenance features

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.

Specifications for D475A-8

Full Specifications

Standard

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US system Metric

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	140 x 165 mm
Piston displacement	30.48 L
Horsepower
SAE J1995	Gross: Forward 697 kW Reverse 777 kW
ISO 9249/SAE J1349*	Net: Forward 664 kW Reverse 722 kW
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 641/722 kW
U.S. EPA Tier 4 Final emission certified

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	3.4 kph	4.4 kph
2nd	6.3 kph	8.4 kph
3rd L	7.4 kph	9.0 kph
3rd	11.6 kph	14.3 kph

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 drives

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 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

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	105 mm
Shoe width (standard)	710 mm
Ground contact area*	64 240 cm²
Ground pressure (tractor)**	115.2 kPa 1.18 kg/cm²
Number of track rollers	8
Number of carrier rollers	2
Extreme service shoes	Additional weight	Ground contact area*	Ground pressure**
810 mm	920 kg	73 290 cm²	118 kPa 1.20 kg/cm²
910 mm	1 830 kg	82 340 cm²	106.1 kPa 1.08 kg/cm²

*Ground contact area calculated by track on ground, center idler to center sprocket
**Ground pressure calculated using ISO 16754

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	1 920 L
Coolant	265 L
Engine	120 L
Torque converter, transmission, bevel gear, and steering system	210 L
Final drive (each side)	75 L

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)	19.8 US gal

Operating Weight

Tractor	88 200 kg
Including rated capacity of lubricant, coolant, full fuel tank, operator, and 710 mm (28 in) shoe, less front and rear attachments.	88 200 kg
Operating weight	115 300 kg
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.	115 300 kg
Ground pressure*	1.36 kPa 133.4 kgf/cm^²

*Ground pressure calculated using ISO 16754

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.	194,450 lbs.
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.	254,195 lbs.
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	For implement 27.5 MPa 280 kgf/cm²
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	180 mm
Blade tilt (single tilt) / 1	250 mm
Blade title (dual tilt) / 2	250 mm
Ripper lift / 2	225 mm
Ripper tilt / 2	225 mm
Hydraulic oil capacity (refill)
Semi-U dozer or U dozer	190 L
Ripper equipment (additional volume)
Giant ripper	130 L
Multi-shank ripper (variable)	130 L

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: 741 kg.
- Width: 2,098 mm.
- Height: 1,910 mm (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
- 710 mm. 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

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
- 810 mm. shoe width
- 910 mm. shoe width

Dozer equipment

Blade Semi-U, stengthened dual-tilt, 27.2 m³
Blade Full-U, strengthened dual-tilt, 34.4 m³
Straight fame assembly, dual-tilit, less blade

Rear attachment

Counterweight with hitch - 6 076 kg.
Counterweight, additional with hitch - 6 581 kg.
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: 7 210 kg.
- Beam length: 1 500 mm.
- Maximum lift above ground: 1 210 mm.
- Maximum digging depth: 1 845 mm.
Ripper Assembly, multi-shank
- Three shank assembly with hydrualically controlled lift and tilt functionality.
- Weight: 9 720 kg.
- Beam length: 3 085 mm.
- Maximum lift above ground: 1 210 mm.
- Maximum digging depth: 1 240 mm.

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”

Support you can count on

Technology that works as hard as you do

ProVision

MineCare

DISPATCH

Telematics

Smart mining

The ProVision Machine Guidance System helps dozer operators work with enhanced efficiency and according to plan. This promotes reduced rework, and can help lessen or eliminate reliance on manual survey methods. High-precision global navigation satellite system (HP-GNSS) positioning enables the system to continuously track the true movement of the dozer in relation to its final surface design, keep-out zones, and other equipment units in the vicinity.

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The MineCare Maintenance Management System combines the benefits of real-time remote equipment health monitoring with cloud computing technology and advanced analytics capabilities. The MineCare System promotes the advanced detection of issues before they occur, thus helping to reduce unplanned maintenance events, promoting increased uptime and utilization and reduced maintenance costs and equipment degradation.

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The DISPATCH Fleet Management System (FMS) helps mines achieve enhanced load and haul cycle efficiency and productivity through its proprietary optimization algorithm. The DISPATCH FMS provides mines with increased potential for end-to-end monitoring of production and auxiliary equipment, improved compliance with planning objectives, shorter hang/queue times and more.

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Telematics data can drive results for business operations, but only when you can collect and analyze it efficiently. Get the insights that can benefit your bottom line.

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Whether your needs begin at the task, process or enterprise optimization level, we equip you with the technology, scalable solutions and flexible support you need to meet your business goals.

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Gallery

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The new Komatsu D475A mining dozer is designed for power, stability and solid performance
Komatsu D475A-8 mining dozer offers more production and longer life
Komatsu D475A-8 mining dozer designed for exceptional production

Using extensive customer feedback, Komatsu re-engineered the D475A-8 mining dozer mainframe to target twice the life of previous models and withstand multiple rebuild/overhaul cycles. Its low center of gravity provides machine stability and long and consistent track on ground length offers more traction, pushing power, ripping efficiency and less shoe slippage. Track shoe slip control automatically controls engine speed and minimizes slip during ripping.
Komatsu D475A-8 mining dozer prioritizes operator comfort

Improvements to the operator’s cab make the Komatsu D475A-8 mining dozer more comfortable to operate throughout long shifts. Operators can ride in comfort with ergonomically placed touch points and palm control joysticks, outstanding operator visibility to the ripper shank, a rear view monitoring system and a heated, ventilated, air-suspended seat.
Komatsu D475A-8 mining dozer engineered for durability

Using extensive customer feedback, Komatsu re-engineered the D475A-8 mining dozer mainframe to target twice the life of previous models and withstand multiple rebuild/overhaul cycles. Its low center of gravity provides machine stability and long and consistent track on ground length offers more traction, pushing power, ripping efficiency and less shoe slippage. Track shoe slip control automatically controls engine speed and minimizes slip during ripping.
Observe the Komatsu D475A 8 in action
Product spotlight: Komatsu D475A-8 Mining Dozer

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.