2025 Komatsu Dozers D51PXi-24

Information

2025 Komatsu Dozers D51PXi-24

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 features rotating bushings, which help reduce undercarriage wear especially while traveling in reverse at high speeds. The Tier 4 Final engine and electronically controlled hydrostatic transmission keep fuel use remarkably low for a dozer this powerful. And the high capacity, high-wear-resistant, HST dozer blade is engineered to move massive loads quickly and efficiently.

Features may include:

Learns as it works
  • With proactive dozing control, even your less experienced operators can automatically cut/strip from existing terrain. The dozer measures the terrain it tracks over and uses that data to plan the next pass. Can improve productivity by up to 60% versus previous generation.
Levels material even during rough dozing
  • Tilt steering control automatically tilts the blade to maintain straight travel during rough dozing. Reduces 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, your crew can begin stripping or spreading using automated input while waiting for the finish grade model.
Advanced machine control
  • In select situations — auto stripping, rough dozing, spreading, advanced finish grading — operators can opt for nearly 100% machine control auto usage. They can even apply automatic control without having a 3D model.
Outstanding blade response for finish grading
  • To deliver unparalleled grading performance, IMC enables the dozer to look ahead at grade transitions and alter the blade angle accordingly.

Photos

Highlights

  • Bushnell, Florida
  • 2025
  • Komatsu
  • Dozers D51PXi-24
  • Model: SAA4D107E-3 | Fan drive type: Hydraulic
  • 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: 1st: 0–2.1 mph / 2nd: 0–3.5 mph / 3rd: 0–5.6 mph/ Travel speed (variable mode): 0–5.6 mph | Travel speed (quick shift mode)* Reverse: 1st: 0–2.5 mph / 2nd: 0–4.0 mph / 3rd: 0–5.6 mph/ Travel speed (variable mode): 0–5.6 mph
  • Available
  • Shoe width (standard): 28 in
  • Grouser: 2.2 in

Specifications

  • 2025
  • Komatsu
  • Dozers
  • D51PXi-24
  • Small
  • Model: SAA4D107E-3 | Fan drive type: Hydraulic
  • Komatsu
  • 4-cycle, water-cooled, direct injection
  • Variable geometry, water-cooled, turbocharged, air-to-air aftercooled
  • 4
  • Hydraulic Number of cylinders: Bore (Blade lift/2: 3.5 in / Blade tilt/1: 4 in / Blade angle/2: 3.5 in)
  • 4.88 in
  • Piston: 275 in³
  • SAE J1995 - Gross: 133 HP | ISO 9249 / SAE J1349 - Net: 131 HP | Hydraulic fan at maximum speed - Net: 122 HP
  • 2,200 rpm
  • Method: Gear pump, force lubrication | Filter: Full-flow
  • All-speed, electronic
  • 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: 1st: 0–2.1 mph / 2nd: 0–3.5 mph / 3rd: 0–5.6 mph/ Travel speed (variable mode): 0–5.6 mph | Travel speed (quick shift mode)* Reverse: 1st: 0–2.5 mph / 2nd: 0–4.0 mph / 3rd: 0–5.6 mph/ Travel speed (variable mode): 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.
  • 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.
  • Rigid type
  • (with dozer, ROPS cab): 4.64 psi
  • 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. | cylinders: Double-acting, piston type | 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
  • Relief valve setting: 3,974 psi
  • Track roller frame: Monocoque, large section, durable construction
  • Ground contact area: 6,042 in²
  • Minimum: 94 in
  • Grouser: 2.2 in
  • Shoe width (standard): 28 in
  • Track gauge: 6 ft. 2 in
  • of track on ground: 9 ft. 0 in
  • 9.8 US gal
  • tank: 71.3 US gal | Final drive (each side): 1.5 US gal | Diesel Exhaust Fluid (DEF) tank: 5.42 US gal
  • Engine: 4.2 US gal
  • tank: 17 US gal | oil capacity (refill): Power angle tilt dozer 17 US gal
  • Tractor: Including ROPS cab, U frame for Power Angle Tilt (PAT) dozer, rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment. : 27,492 lbs.
  • Operating: Including Power Angle Tilt (PAT) dozer, ROPS cab, operator, standard equipment, rated capacity of lubricant, hydraulic control unit, coolant, and full fuel tank.: 31,438 lbs.
  • Rollers and idlers: Lubricated track rollers | Sealed and 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