Meet the demands of your substantial projects with the formidable D475A-8 dozer. Boasting over 350 horsepower, this powerhouse features a colossal blade capacity, equipped with both semi-U and full U blades. With an automatic lockup torque converter and a low drive K-bogie suspended undercarriage, it ensures maximum traction and a smooth ride during dozing or ripping operations.
- Engineered for powerful dozing
- Excellent blade capacity
- Quiet cab with a smooth ride and great visibility
- Automated blade control with iMC
Product Features and benefits:
Tailored Dozer Solutions
Explore the versatile options within the D65/85/155 dozer family, each offering exceptional power, economy, and reliability. Customize your dozer with blade options (straight, Semi-U, Sigmadozer, and Full U for D155), track shoe width, and horsepower combinations tailored to your specific application.
Fuel Efficiency Optimization
Benefit from an advanced Tier 4 engine, providing a powerful yet fuel-efficient combination. The auto idle shutdown, adjustable from 5-60 minutes, contributes to reduced fuel consumption and emissions.
Operator-Friendly Controls
Combat operator fatigue with palm command electronic control joysticks, designed to fit the natural relaxed shape of hands. Easily switch between auto-shift and manual-shift modes with a single button push, ensuring precision and reducing fatigue during shifts.
Smooth and Powerful Handling
Experience smooth and powerful turns with the hydrostatic steering system, transmitting engine power to both tracks seamlessly. This system minimizes turning radius with counter-rotation while in neutral.
Durable Undercarriage
Maximize the lifespan of your dozer with the Parallel Link Undercarriage System (PLUS), featuring rotating bushings. This system delivers up to twice the life of conventional undercarriages, with even parts wear and longer intervals between replacements.
Efficient Power Utilization
Optimize work efficiency with a lock-up torque converter that determines the appropriate gear based on load and conditions. The lockup mechanism automatically transfers engine power directly to the transmission, enhancing drive train efficiency.
Intelligent Machine Control (iMC)
Equip your dozer with iMC for automatic dozing, rough cut to finish grade. These machines learn operator blade input, offering near-100% auto control in select situations and facilitating quicker learning for new operators.
Operator Comfort
Prioritize operator comfort with an air suspension seat featuring lumbar support and tilt adjustments. Electric heat ensures operators stay comfortable even in cold conditions.
Enhanced Situational Awareness
Ensure operators stay focused with a standard rear camera monitoring system, displaying the view behind the dozer on a large color monitor in the cab.
DPF Regeneration with Ease
Tier 4 machines utilize diesel particulate filters for engine soot regeneration. D65/D85/D155 models employ continuous passive regeneration and active regeneration, minimizing operational disruptions.
Efficient Blade Pitch Operation
Streamline blade pitch operation with the auto-pitch switch, allowing operators to toggle blade pitch position from dig to dump without lever movements. The control can automatically return to the digging position when reverse is selected (requires dual tilt dozer).
Ergonomic Ripper Controls
Enjoy ergonomic ripper control levers with an auto-return function. These levers automatically raise the ripper when the travel lever is moved to reverse, reducing the need for constant manual adjustments and allowing operators to focus on other tasks.
Product Specifications for D155AX-8:
Engine:
- Model: Komatsu SAA6D140E-7
- Type: 4-cycle, water-cooled, direct injection
- Aspiration: Komatsu Variable Geometry Turbocharged, air-to-air aftercooled, cooled EGR
- Number of cylinders: 6
- Bore x Stroke: 5.51 x 6.50 in
- Piston displacement: 930 in³
- Governor: Mid-range, electronic
- Horsepower:
- SAE J1995 – Gross: 360 HP
- ISO 9249 / SAE J1349* – Net: 354 HP
- Rated rpm: 1,900 rpm
- Fan drive type: Hydraulic
- Lubrication system:
- Method: Gear pump, force lubrication
- Filter: Full-flow
- *Net horsepower at the maximum speed of the radiator cooling fan: 320 HP
- EPA Tier 4 Final emissions certified
TORQFLOW Transmission:
- Automatic TORQFLOW transmission with a water-cooled, 3-element, 1-stage, 1-phase, torque converter with lockup clutch.
- Planetary gear, multiple-disc clutch transmission that is hydraulically actuated and force-lubricated.
- Equipped with a gearshift lock lever and neutral safety switch.
Travel Speed:
- 1st Gear forward: 2.4 mph
- 1st Gear reverse: 2.9 mph
- 2nd Gear forward: 3.5 mph
- 2nd Gear reverse: 4.2 mph
- 3rd L Gear forward: 4.7 mph
- 3rd L Gear reverse: 5.7 mph
- 3rd Gear forward: 7.2 mph
- 3rd Gear reverse: 8.7 mph
Final Drive:
- Double-reduction, spur, and planetary final drives increase tractive effort.
- Segmented sprockets are bolt-on for easy in-the-field replacement.
Steering System:
- Palm Command Control System (PCCS) lever controls for all directional movements.
- Hydrostatic Steering System (HSS) powered by steering planetary units and an independent hydraulic pump and motor.
- Wet, multiple-disc, pedal-controlled service brakes.
- Gear shift lock lever also applies parking brake.
- Minimum turning radius: 6 ft. 6 in
Undercarriage:
- Suspension: Oscillation-type with equalizer bar and forward-mounted pivot shafts
- Track roller frame: Monocoque, high-tensile-strength steel construction
- K-Bogie undercarriage
- Lubricated track rollers with a bogie suspension system
- Track shoes: Lubricated tracks, dust seals for preventing entry of foreign abrasives
Number of Shoes (Each Side): 42 Grouser Height: 3.1 in Shoe Width (Standard/Maximum): 24 in / 28 in Ground Contact Area: 6,193 in² Ground Pressure (Tractor Only): 11.6 psi Number of Track Rollers (Each Side): 7 Number of Carrier Rollers (Each Side): 2
Service Refill Capacities:
- Fuel tank: 165 US gal
- Coolant: 27.5 US gal
- Engine oil: 9.8 US gal
- Damper: 0.4 US gal
- Transmission, bevel gear, and steering system: 23.8 US gal
- Final drive (each side): 8.2 US gal
- DEF tank: 10.3 US gal
- Hydraulic oil capacity: 25.1 US gal
Operating Weight:
- Tractor weight, including rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment (including ROPS cab): 72,100 lbs.
- Operating weight, including strengthened SIGMADOZER, giant ripper, ROPS cab, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank: 89,300 lbs.
- Ground pressure: 14.4 psi
Hydraulic System:
- Closed-center load sensing system (CLSS) designed for precise and responsive control.
- Hydraulic control unit: All spool control valves externally mounted beside the hydraulic tank.
- Variable piston pump with capacity (discharge flow) of 85.9 US gal for steering and 47.6 US gal for implement at rated engine rpm.
- Relief valve setting for implement: 3,980 psi
- Relief valve setting for steering: 5,550 psi
Control Valves:
- Spool control valve for SIGMADOZER, 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)
Hydraulic Cylinders:
- Double-acting, piston
- Number of cylinders / Bore:
- Blade Lift / 2: 4.33 in
- Blade Tilt (Dual tilt) / 2: 6.30 in
- Blade Tilt (Single Tilt) / 1: 6.30 in
- Ripper Lift: 7.09 in
- Ripper Tilt / 1: 7.87 in
Hydraulic Oil Capacity (Refill):
- SIGMADOZER: 25.1 US gal
- Semi-U dozer: 25.1 US gal
- Full-U dozer: 25.1 US gal
- Ripper equipment (additional volume):
- Multi-shank ripper: 9.8 US gal
- Giant ripper: 9.8 US gal
Further information on this machine can be viewed by visiting this link https://www.komatsu.com/products/dozers/large-dozers/d155ax-8
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