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KOMATSU D51EXI-24

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Year

2024

Manufacturer

Komastu

Model

D51EXI-24

Condition

New

Location

Ontario

Unrivaled versatility

If you need the “Swiss Army knife” of dozers that can adapt easily to multiple situations — from golf course construction to highway projects — this dozer is it. Built for precise, high-speed grading, its standard parallel link undercarriage system has rotating bushings, which help reduce undercarriage wear, especially while traveling in reverse at high speeds. And the new Tier 4 Final engine and electronically controlled hydrostatic transmission help keep fuel use remarkably low for a dozer this powerful.

  • Get new operators up to speed quickly
  • Go from mass ex to finished grading faster than ever
  • Fully integrate 3D design data into your machines
  • Empower operators to work efficiently, pass after pass

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.
26,698 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.
30,380 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 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
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
  • intelligent Machine Control 2.0
  • Komatsu Diesel Oxidation Catalyst (KDOC)
  • KOMTRAX Level 5.0
  • Large high-resolution LCD
  • LED worklights
  • Lunch box holder
  • Marks and plates, English
  • New 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
    D51EXi-24: 22" single grouser shoe
    D51PXi-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.

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