The D155PX-8 LGP (low ground pressure) is designed for pushing massive loads on soft ground. It features an 8-roller undercarriage with track shoe sizes up to 38” (965 mm) wide, providing outstanding traction, balance, and exceptional flotation. Additionally, there is an option for an extended wear life undercarriage with 34” wide PLUS (Parallel Link Undercarriage System) rotating bushing track shoes.
- Engineered for powerful dozing
- Excellent blade capacity
- Quiet cab with a smooth ride and great visibility
Product Features and benefits:
Customize Your Dozer
Explore the exceptional power, economy, and reliability offered by the D65/85/155 family of dozers. Tailor your machine to your specific needs by selecting the blade type (straight, Semi-U, Sigmadozer, and Full U for D155), track shoe width, and horsepower combination.
Minimize Fuel Usage
Benefit from an advanced Tier 4 engine, providing a potent combination of power and fuel efficiency. The auto idle shutdown, adjustable from 5-60 minutes, contributes to reducing fuel consumption and emissions.
Combat Operator Fatigue
Operators will appreciate the palm command electronic control joysticks designed to fit the natural relaxed shape of their hands. Easily switch between auto-shift or manual-shift modes with the push of a button, ensuring precision with reduced fatigue over extended shifts.
Smooth, Powerful Handling
Execute smooth, powerful turns with the hydrostatic steering system, transmitting engine power to both tracks without interruption. The system minimizes turning radius with counter-rotation while in neutral.
Long-Lasting Undercarriage
Optimize the lifespan of your dozer with the Parallel Link Undercarriage System (PLUS), featuring rotating bushings that deliver up to twice the life of conventional undercarriages. Parts wear evenly, lasting longer before replacement, and no pin and bushing turn are required.
Fuel-Efficient Power
Enhance work efficiency with a lock-up torque converter, determining the appropriate gear based on load and conditions. The lockup mechanism automatically transfers engine power directly to the transmission, boosting drive train efficiency.
Operator Comfort
Prioritize operator comfort with the air suspension seat featuring lumbar support and tilt adjustments. Electric heat ensures operators stay comfortable in cold conditions.
Situational Awareness
Improve situational awareness with a standard rear camera monitoring system that displays the view behind the dozer on the large color monitor in the cab.
No-Hassle DPF Regeneration
Tier 4 models use continuous passive regeneration and active regeneration, minimizing the impact on your operation. DPF regeneration occurs seamlessly, often without requiring the dozer to stop.
Efficient Blade Pitch Operation
Toggle blade pitch position from dig to dump effortlessly with the auto-pitch switch (requires dual tilt dozer). The blade pitch control can be set to automatically return to the digging position when reverse is selected.
Ergonomic Ripper Controls
Operators will love the ergonomic ripper control lever with an auto-return function, automatically raising the ripper when the travel lever is moved to reverse. Simplify operations and focus on tasks without grappling with levers.
Product Specifications for D155PX-8 LGP:
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
- Net horsepower at the maximum speed of radiator cooling fan: 320 HP
- Rated rpm: 1,900 rpm
- Fan drive type: Hydraulic
- Lubrication system:
- Method: Gear pump, force lubrication
- Filter: Full-flow
- EPA Tier 4 Final emissions certified
Final Drive:
- Double-reduction, spur and planetary final drives increase tractive effort.
- Segmented sprockets are bolt-on for easy in-the-field replacement.
Hydraulic System:
- Standard rear Closed-center load sensing system (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.
- High flow hydraulics for towing winch is standard.
- Base machine is equipped with dual tilt and pitch dozer hydraulics for semi-u blade.
- Angle blade is equipped with dual tilt, no pitch.
- 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
- 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
- Hydraulic cylinders / Number of cylinders:
- Boom / 2: 4.33 in
- Blade Tilt (Dual tilt) / 2: 6.30 in
- Blade Tilt (Single Tilt) / 1: 6.30 in
- Hydraulic oil capacity (refill):
- Angle dozer: 25.1 US gal
- Semi-U dozer: 25.1 US gal
Operating Weight:
- Tractor weight: 85,100 lbs.
- Operating weight: 92,820 lbs.
- Ground pressure: 7.67 psi
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
Blades:
- Angle Blade:
- Capacity: 9.6 yd³
- Width at cutting edge: 19 ft. 0 in
- Height: 4 ft. 5 in
- Tilt, max angle: 9.5 degrees
- Tilt, max dimension: 38 in
- Weight: 14,700 lbs.
- Semi-u blade:
- Capacity: 12.9 – 15.7 yd³
- Width over end bits: 15 ft. 1 in
- Weight ‘AR” spec / non ‘AR”: 12,732 lbs. / 11,114 lbs.
TORQFLOW Transmission:
- Komatsu’s automatic TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase, torque converter with lockup clutch, and a planetary gear, multi-disc clutch transmission which is hydraulically actuated and force-lubricated for optimum heat dissipation.
- Equipped with 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
Undercarriage:
- Suspension: Oscillation-type with equalizer bar and forward mounted pivot shafts
- Track roller frame: Monocoque, high-tensile strength steel construction
- Fixed mounted 8-roller undercarriage
- Lubricated track rollers are rigid mounted to the track frame.
- Track shoes:
- Lubricated tracks.
- Unique dust seals for preventing entry of foreign abrasives into pin-to-bushing clearance for extended service.
- Track tension easily adjusted with grease gun.
- Number of shoes (each side): 45
- Grouser height: 3.1 in
- Shoe width (standard/maximum): 38 in
- Ground contact area: 12,096 in²
- Ground pressure (tractor only): 7.67 psi
- Number of track rollers (each side): 8
- Number of carrier rollers (each side): 2
Further information on this machine can be viewed by visiting this link https://www.komatsu.com/products/dozers/large-dozers/d155px-8-lgp
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