If you require a versatile dozer, often referred to as the “Swiss Army knife,” capable of adapting to various situations, from golf course construction to highway projects, this is the ideal choice. Engineered for precise and high-speed grading, its standard parallel link undercarriage system features rotating bushings that contribute to reduced undercarriage wear, especially during reverse travel at high speeds. The new Tier 4 Final engine and electronically controlled hydrostatic transmission ensure remarkably low fuel consumption for a dozer of this power.
- Facilitate quick training for new operators
- Accelerate the transition from mass excavation to finished grading
- Seamlessly integrate 3D design data into your machines
- Empower operators for efficient work pass after pass
Product Features and benefits:
Intelligent Learning in Action
With proactive dozing control, even less experienced operators can automatically cut or strip from existing terrain. The dozer measures the terrain it moves over, using that data to plan the next pass. This can improve productivity by up to 60% compared to the previous generation.
Automated Fill Spreading
Lift layer control enables operators to spread fill from existing terrain at the press of a button. The dozer measures the terrain it tracks over, using the data to plan the next pass. Achieve up to double your production and consistent layers for compaction quality.
Efficient Material Leveling
Tilt steering control automatically tilts the blade for straight travel during rough dozing, reducing operator steering input by up to 80%.
Quick Surface Creation
Operators can create a temporary design surface with the press of a button. Combined with other IMC 2.0 functions, the crew can start stripping or spreading using automated input while waiting for the finish grade model.
Bridging Operator Skill Gap
Machine logic allows the dozer to continuously learn the terrain and make calculated decisions for the next pass. Intelligent Machine Control helps narrow the skill gap between new and experienced operators.
Advanced Machine Control Options
In select situations like auto stripping, rough dozing, spreading, and advanced finish grading, operators can choose nearly 100% machine control auto usage, even without a 3D model.
Adaptable Machine Learning
Automatic functions enable the dozer to learn from the operator’s blade input, resulting in increased adaptability, easier operation, and less reliance on operator input.
Precision in Finish Grading
IMC allows the dozer to anticipate grade transitions and adjust the blade angle accordingly, delivering outstanding grading performance.
Product Specifications for D51EXi-24:
Engine:
- Model: Komatsu SAA4D107E-3
- Type: 4-cycle, water-cooled, direct injection
- Aspiration: Variable geometry, water-cooled, turbocharged, air-to-air aftercooled
- Number of cylinders: 4
- Bore x stroke: 4.21 x 4.88 in
- Piston displacement: 275 in³
- Governor: All-speed, electronic
- Horsepower:
- SAE J1995 – Gross: 133 HP
- ISO 9249 / SAE J1349 – Net: 131 HP
- Hydraulic fan at maximum speed – Net: 122 HP
- Rated rpm: 2,200 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 provides infinite speed changes up to 5.6 mph.
- Travel speed (quick shift mode):
- Forward: 0–5.6 mph
- Reverse: 0–5.6 mph
- Final drive: In-shoe mounted, axial-piston-type travel motors, with integrated two-stage planetary gear reduction.
- Steering system: Palm Command Control System (PCCS) joystick control for all directional movements.
- Minimum turning radius: 94 in
Undercarriage:
- Suspension: Rigid type
- Track roller frame: Monocoque, large section, durable construction
- Rollers and idlers: Lubricated track rollers
- Sealed & lubricated track: Track tension easily adjusted w/grease gun
- Number of track rollers (each side): 7
- Type of shoes (standard): Single grouser
- Number of shoes (each side): 44
- Grouser height: 2.2 in
- Shoe width (standard): 22 in
- Ground contact area: 4,766 in²
- Ground pressure (with dozer, ROPS cab): 5.79 psi
- Track gauge: 5 ft. 10 in
- Length of track on ground: 9 ft. 0 in
Service Refill Capacities:
- Coolant: 9.8 US gal
- Fuel tank: 71.3 US gal
- Engine oil: 4.2 US gal
- Hydraulic tank: 17 US gal
- Final drive (each side): 1.5 US gal
- Diesel Exhaust Fluid (DEF) tank: 5.42 US gal
Operating Weight (Approximate):
- Tractor weight: 26,698 lbs.
- Operating weight: 30,380 lbs.
Hydraulic System:
- Closed-Center Load Sensing System (CLSS) designed for precise and responsive control.
- Hydraulic control unit: All spool control valves externally mounted remote to the hydraulic tank.
- Piston-type hydraulic pump with a capacity (discharge flow) of 26 U.S. gal/min at rated engine rpm.
- Relief valve setting: 3,974 psi
- Hydraulic cylinders: Double-acting, piston type
- Number of cylinders (Bore):
- Blade lift / 2: 3.5 in
- Blade tilt / 1: 4 in
- Blade angle / 2: 3.5 in
- Number of cylinders (Bore):
- Hydraulic oil capacity (refill) for power angle tilt dozer: 17 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
- Positions:
- Additional control valve required for ripper
- Positions:
- Ripper lift: Raise, hold, and lower
- Positions:
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