Dozer D71PXi Cartersville GA Qube 201104 3K1A2087

Taking one of the industry’s most capable and reliable dozers to the next level involves making it smart. The latest addition to the sector is the intelligent HST dozer with a distinctive slant-nosed design, showcasing cutting-edge IMC 2.0 capabilities. Notably, it introduces patent-pending proactive dozing control, enabling automatic operation 100% of the time.

  • IMC 2.0 Productivity Boost: Integrated with IMC 2.0 features, this dozer is geared towards increasing productivity. The intelligent machine control system ensures precision and efficiency in every dozing operation.
  • Optimized Ground Pressure: With a lower ground pressure compared to the D71EX, this dozer excels in maintaining stability and maneuverability even in challenging terrains. The reduced ground pressure minimizes environmental impact while enhancing overall performance.
  • HST Drive for Speed and Responsiveness: The dozer incorporates a fast travel and steering response, thanks to its Hydrostatic Transmission (HST) drive. This feature not only improves operational speed but also enhances maneuvering capabilities for increased efficiency.

Product Features and benefits:

The information you provided seems to be about advanced features and technologies related to intelligent machine control (IMC) for dozers, particularly focusing on Komatsu dozers like the D71i and D51PXi series. Here’s a summary of the key points:

  1. Proactive Dozing Control:
    • The dozer measures the terrain it tracks over and uses the data to plan the next pass.
    • Can automatically cut/strip from existing terrain.
    • Improves productivity by up to 60% compared to the previous generation.
  2. Lift Layer Control:
    • Allows operators to spread fill from existing terrain with the press of a button.
    • Measures the terrain to plan the next pass.
    • Can double production and achieve consistent layers for compaction quality.
  3. Tilt Steering Control:
    • Automatically tilts the blade to maintain straight travel during rough dozing.
    • Reduces operator steering input by up to 80%.
  4. Quick Surface Creation:
    • Operators can create a temporary design surface with the press of a button.
    • Combined with other IMC 2.0 functions for automated stripping or spreading.
  5. Machine Logic and Learning:
    • The dozer continuously learns the terrain, making calculated decisions for the next pass.
    • Helps bridge the skill gap between new and experienced operators.
  6. Advanced Machine Control:
    • In select situations like auto-stripping, rough dozing, spreading, and advanced finish grading, operators can opt for nearly 100% machine control auto usage.
    • Automatic control can be applied without having a 3D model.
  7. Adaptive Learning from Operators:
    • Automatic functions allow the dozer to learn from the operator’s blade input.
    • Enhances adaptability, eases operation, and reduces reliance on operator input.
  8. Outstanding Blade Response for Finish Grading:
    • IMC enables the dozer to look ahead at grade transitions and alter the blade angle accordingly.
    • Aims to deliver unparalleled grading performance.

Product Specifications for D71PXi-24:


  • Model: Komatsu SAA6D114E-6
  • 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: 4.5 x 5.7 in
  • Piston Displacement: 540 in³
  • Governor: All-speed and mid-range, electronic
  • Horsepower:
    • SAE J1995 – Gross: 240 HP
    • ISO 9249 / SAE J1349 – Net: 237 HP
    • Hydraulic fan at maximum speed: 213 HP
  • Rated RPM: 2,100 rpm
  • Fan Drive Type: Hydraulic
  • Lubrication System:
    • Method: Gear pump, force lubrication
    • Filter: Full-flow
  • EPA Tier 4 Final emissions certified

Hydrostatic Transmission:

  • Dual-path, hydrostatic transmission
  • Extensive speed changes up to 6.8 mph
  • Variable capacity travel motors
  • Travel control lock lever and neutral switch
  • Travel Speeds (Quick Shift Mode):
    • Forward: 0-2.4 mph, 0-4 mph, 0-5.2 mph, 0-6.8 mph
    • Reverse: 0-2.8 mph, 0-4.7 mph, 0-5.8 mph, 0-6.8 mph
  • Travel Speeds (Variable Mode): 0.5-6.8 mph

Final Drive:

  • In-shoe mounted axial piston type travel motors
  • Integrated two-stage planetary gear reduction
  • Compact in-shoe mount to reduce the risk of damage
  • Bolt-on sprocket for easy replacement

Steering System:

  • PCCS joystick control for all directional movements
  • Fully electronic control for smooth operation
  • Minimum Turning Radius:
    • D71PX-24/ D71PXi-24: 10 ft. 2 in
    • D71PX-24 Wide/ D71PXi-24 Wide: 10 ft. 10 in


  • Suspension: Oscillating-type with equalizer bar and pivot shafts
  • Track Roller Frame: Monocoque, large section, durable construction
  • Rollers and Idlers: Lubricated track rollers
  • Lubricated Tracks: Parallel Link Undercarriage System (PLUS) with lubricated rotating bushings
  • Number of Track Rollers (Each Side): 8
  • Type of Shoes (Standard): Single grouser
  • Number of Shoes (Each Side): 45
  • Grouser Height: 2.6 in
  • Shoe Width (Standard): 30 in (D71PX-24/D71PXi-24), 36 in (D71PX-24 Wide/D71PXi-24 Wide)
  • Ground Contact Area: 53.6 ft² (D71PX-24/D71PXi-24), 64.5 ft² (D71PX-24 Wide/D71PXi-24 Wide)
  • Ground Pressure (with dozer, ROPS cab): 5.8 psi (D71PX-24/D71PXi-24), 5.0 psi (D71PX-24 Wide/D71PXi-24 Wide)
  • Track Gauge: 7 ft. 3 in (D71PX-24/D71PXi-24), 7 ft. 10 in (D71PX-24 Wide/D71PXi-24 Wide)
  • Length of Track on Ground: 10 ft. 8.9 in

Service Refill Capacities:

  • Coolant: 14.4 US gal
  • Fuel Tank: 116.0 US gal
  • Engine Oil: 8.1 US gal
  • Hydraulic Tank: 40.7 US gal
  • Final Drive (Each Side): 2.6 US gal
  • DEF Tank: 5.3 US gal

Operating Weight (Approximate):

  • Tractor Weight (Including ROPS cab, U frame for PAT dozer, full fuel tank, operator, and standard equipment):
    • D71PXi-24: 48,061 lbs
    • D71PXi-24 Wide: 49,604 lbs
  • Operating Weight (Including PAT dozer, ROPS cab, operator, standard equipment, full fuel tank):
    • D71PX-24: 50,927 lbs
    • D71PX-24 Wide: 52,690 lbs
    • D71PXi-24: 51,147 lbs
    • D71PXi-24 Wide: 52,911 lbs

Hydraulic System:

  • Closed-Center Load Sensing System (CLSS)
  • Piston-type hydraulic pump with a capacity of 62.3 US gpm at rated engine rpm
  • Relief Valve Setting: 4,177 psi
  • Hydraulic Cylinders: Double-acting, piston type
    • Bore: Blade lift (2) – 4.7 in, Blade tilt (1) – 5.1 in, Blade angle (2) – 4.3 in
  • Hydraulic Oil Capacity (Refill):
    • Power angle tilt dozer: 40.7 US gal
  • Control Valves:
    • 3-spool control valve for Power Angle Tilt dozer
      • Positions: Blade lift (Raise, hold, lower, and float), Blade tilt (Right, hold, and left), Blade angle (Right, hold, and left)
    • Additional control valve required for ripper
      • Positions: Ripper lift (Raise, hold, and lower)

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