Experience the cutting-edge efficiency of the D51EX-24, a construction dozer that sets new standards for general-purpose tasks. Equipped with a super slant nose and 3D grade control, this machine ensures fast and accurate grading, providing your operator with excellent blade visibility on any job.
- Up to 15% increased production compared to the prior model
- Up to 13% reduced fuel consumption compared to the prior model
Product Features and benefits:
Revolutionary Undercarriage System: Komatsu PLUS (Parallel Link Undercarriage System): Engineered for even wear, the Komatsu PLUS undercarriage ensures nearly 100% utilization of undercarriage components, leading to a remarkable up to 40% reduction in undercarriage maintenance costs compared to conventional systems. Strengthened rollers and links contribute to doubling the wear life.
Versatile Power Angle Tilt (PAT) Dozer Blade: Boost productivity and enhance versatility across various applications with a Power Angle Tilt (PAT) dozer blade featuring an adjustable pitch system. This innovation opens up new possibilities for expanded functionality.
Super-Slant Nose Design for Unparalleled Blade Visibility: Incorporating an innovative super-slant nose design, the dozer ensures exceptional blade visibility. This feature enhances machine control, elevating overall efficiency and productivity.
Hydrostatic Transmission (HST) with Electronic Control: Fully electronic control delivers seamless automatic shifting and enables smooth control. The Komatsu-designed Hydrostatic Transmission (HST) equipped in this machine allows for Quick-Shift or variable speed selection, optimizing operational flexibility.
Effortless Maintenance Access: Facilitating easy maintenance, a swing-up fan with a gas strut-assisted lift system provides convenient access to the radiator, oil cooler, and charge air cooler. The hydraulic fan, equipped with a reversing feature, ensures efficient cleaning of any obstructions restricting airflow.
Operator-Centric Palm Command Control System (PCCS) Joystick: Prioritizing operator comfort and ease of use, the ergonomic and low-effort Palm Command Control System (PCCS) joystick governs all directional movements, including machine travel speed and counter-rotation.
Product Specifications for D51EX-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.
- Variable capacity travel motors allow the operator to select the optimum speed for specific jobs.
- Travel control lock lever and neutral switch.
- Travel Speed (Quick Shift Mode):
- Forward: 0–2.1 mph, Reverse: 0–2.5 mph (1st)
- Forward: 0–3.5 mph, Reverse: 0–4.0 mph (2nd)
- Forward: 0–5.6 mph, Reverse: 0–5.6 mph (3rd)
- Travel Speed (Variable 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. Compact, in-shoe mount reduces the risk of damage by debris. Bolt-on sprocket ring with triple labyrinth seal design.
Steering System:
- Palm Command Control System (PCCS) joystick control for all directional movements.
- Hydrostatic Transmission (HST) for smooth, powerful turns.
- Fully electronic control enables adjustable smooth control through the monitor.
- PCCS utilizes shift buttons to increase and decrease speed.
- Minimum Turning Radius: 94 in (As measured by track marks on the ground at pivot turn.)
Undercarriage:
- Suspension: Rigid type
- Track roller frame: Monocoque, large section, durable construction
- Rollers and idlers: Lubricated track rollers, Sealed & lubricated track
- 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 (Including ROPS cab, U frame for Power Angle Tilt (PAT) dozer, rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment): 27,182 lbs.
- Operating weight (Including Power Angle Tilt (PAT) dozer, ROPS cab, operator, standard equipment, rated capacity of lubricant, hydraulic control unit, coolant, and full fuel tank): 30,821 lbs.
Hydraulic System:
- Closed-Center Load Sensing System (CLSS) designed for precise and responsive control, and for efficient simultaneous operation.
- 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 US gpm at rated engine rpm.
- Relief valve setting: 3,983 psi
- Hydraulic cylinders (Number of cylinders): Bore x Stroke x Rod
- Blade lift / 2: 3.5 in
- Blade tilt / 1: 4 in
- Blade angle / 2: 3.5 in
- Hydraulic oil capacity (refill):
- 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:
Further information on this machine can be viewed by visiting this link https://www.komatsu.com/products/dozers/small-dozers/d51ex-24
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