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KOMATSU D51EX-24
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Year
2024
Manufacturer
Komastu
Model
D51EX-24
Condition
New
Location
Ontario
Fast and accurate grading
Combine a super slant nose with 3D grade control for a fast and accurate grading system. The D51EX-24 sets the standard for general-purpose construction dozers and provides your operator excellent blade visibility while working any job.
- Production increased by up to 15% over prior model
- Up to 13% reduced fuel consumption over prior model
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. The variable capacity travel motors allow the operator to select the optimum speed to match specific jobs. Travel control lock lever and neutral switch.
| Travel speed (quick shift mode) |
Forward | Reverse |
| 1st | 0–2.1 mph | 0–2.5 mph |
| 2nd | 0–3.5 mph | 0–4.0 mph |
| 3rd | 0–5.6 mph | 0–5.6 mph |
| Travel speed (variable mode) |
0–5.6 mph | 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 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. Pushing the joystick forward results in forward machine travel, while pulling it back reverses the machine. Simply tilt the joystick to the left or right to make a turn. Tilting the joystick fully to the left or right activates counter-rotation.
Hydrostatic Transmission (HST) provides smooth, powerful turns. Fully electronic control enables smooth control that can be adjusted in the monitor. The 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 | 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: 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 capacity (discharge flow) of 26 US gpm at rated engine rpm.
| Relief valve setting | 3,983 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 |
| 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 |
| Additional control valve required for ripper | |
| Positions: | |
| Ripper lift | Raise, hold and lower |
- Accumulator for Electric Proportional Control (EPC)
- Air cleaner, dry, double element type with caution lamp on monitor
- Air conditioner (A/C)
- Air inlet
- Alternator, 24 V/85 A
- Back-up alarm
- Batteries, large capacity 24 V/92 Ah
- Cab accessories
— 12 V × 2 power supply
— Cup holder
— Rear view mirror
— Rear view monitor system
— Bluetooth/USB compatible radio with remote AUX plug (3.5 mm) - Crankcase guard and underguard
- Decelerator/brake pedal (Single pedal)
- Electronically controlled Hydrostatic Transmission (HST) with quick-shift and variable speed settings
- Electronic monitor panel with on-board diagnostics
- Engine hood and side panels
- Engine, KOMATSU SAA4D107E-3, gross output of 131 HP, direct injection, water-cooled turbocharged, air-to-air aftercooler, cooled EGR, EPA Tier 4 Final and EU Stage 4 emissions certified
- Fan, hydraulic driven, electronic control
- Filler cap locks and cover locks
- Fluid sampling ports
- Foot rest, high mounted
- Fuel pre-filter (10 micron) and fuel filter (2 micron)
- Grease gun holder
- High altitude arrangement (No fuel adjustment up to 2300 m)
- Horn
- Hydraulics for PAT dozer
- Intake pipe with precleaner
- Komatsu Diesel Oxidation Catalyst (KDOC)
- KOMTRAX Level 5.0
- Large high-resolution LCD
- LED worklights
- Lunch box holder
- Marks and plates, English
- Operator Identification System
- Palm Command Control System (PCCS) with electronic control for travel control
- Palm Command Control System (PCCS) with EPC for blade control
- Power turn with counter rotation
- Pullhook, front
- Radiator guard grid
- Radiator reserve tank
- Real-time DEF monitoring
- Rear-hinged radiator guard
- Reverse travel speed presets
- ROPS cab
Meets ISO 3471, SAE J/ISO 3471 ROPS standards, and ISO 3449 FOPS standard. - Seat belt, 3" retractable
- Seat, air suspension, fabric, heated, low back, headrest
- Shovel holder
- Starting motor, 24 V/4.5 kW
- Selective Catalytic Reduction (SCR)
- Self adjusting roller
- Sprockets, bolt-on
- Sprocket inner guard
- Track roller guards, end section
- Track shoe assembly (PLUS)
— Sealed and lubricated
D51EX-24: 22" single grouser shoe
D51PX-24: 28" single grouser shoe - Triple labyrinth final drive
- Water separator
- Dozer assembly
- Hitch
- Hydraulics for rear equipment
- Track roller guard, full length
Multi-shank ripper:
- Weight: 1,874 lb
- Beam length: 5'1"
- Maximum lift above ground: 1'3"
- Maximum digging depth: 1'8"
- Number of shanks: 3
SUPPORT YOU CAN COUNT ON
FINANCING
Financing can be a major advantage for your operation, enabling you to get the equipment and service you need with terms to fit your business needs. Take advantage of competitive and flexible financial tools with Komatsu Financial.
MY KOMATSU
Access and manage all your machine telematics data, parts manuals, service manuals, software and parts ordering information from a single source anywhere, anytime.
DON'T OVERLOOK THE UNDERCARRIAGE
Keeping the undercarriage in good working conditions cn significantly minimize repair expenses and lower per-hour operating costs.