Global-CE > Bulldozer > KOMATSUBulldozer > Komatsu D51PXi-24 SMALL DOZERS
Komatsu D51PXi-24 SMALL DOZERS

Komatsu D51PXi-24 SMALL DOZERS

BladeCapacityMax 3.35
BladeCapacityMin 3.35
Horsepower 131 @ 2200 rpm
OperatingWeightMax 31504
OperatingWeightMin 31504

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Cab Top GNSS Antenna

No blade mounted GNSS antenna(s), cables to worry about damaging with cab top GNSS antenna. Reduced risk of theft due to low visibility as viewed from ground level.

High Capacity High WearResistant HST Dozer Blade

The D51PXi PAT high-capacity (4.4 yd3), high wear-resistant blade can increase production.

Production increased by up to 15%

HST with Electronic Control

The D51i-24 is equipped with Komatsu-designed HST that allows for Quick-Shift or variable speed selection. The HST consists of dual-path closed-circuits, with two variable displacement piston pumps and two variable displacement travel motors. Hydrostatic steering eliminates steering clutches and brakes, providing smooth, powerful turns. Fully electronic control provides complete automatic shifting and enables smooth control. Engine speed is controlled using an electronic fuel control dial.

Komatsu New Emission Regulations compliant Engine

SAA4D107E-3 EPA Tier 4 Final emissions certified engine has a water cooled variable geometry turbocharged and aftercooled 4.5 liter diesel engine which provides up to 13% increased fuel efficiency.

Parallel Link Undercarriage System

Komatsu's PLUS rotating bush design provides less downtime, longer wear, and with up to 40% lower undercarriage maintenance costs, than conventional undercarriage. Rotating bushings eliminate the cost and downtime for bushing turns, and strengthened rollers and links increase wear life up to two times. With PLUS, individual links can be replaced with common track tools.

PAT Dozer with Adjustable Pitch

A high wear-resistant power angle, power tilt dozer blade with adjustable blade pitch is available on the D51i-24. The hydraulic blade tilt and angling function expands versatility and productivity in a variety of applications.

Stroke Sensing Hydraulic Cylinders

Robust stroke sensing hydraulic cylinders employ proven Komatsu sensor technologies for accurate finish grade performance. Stroke sensing angle cylinder allows machine control system to know the angle of the blade.

Swing up fan

The D51i-24 utilizes a swing-up fan with a gas strut-assisted lift system to provide easy access to the (side-by-side) radiator, oil cooler and charge air cooler. The hydraulic fan is reversible to help keep the radiator cores clean and simplify maintenance.

Unrivaled Blade Visibility

The D51i-24 incorporates Komatsu's superslant nose design. Komatsu's innovative design provides excellent blade visibility for improved machine control and increased efficiency and productivity.

Model Komatsu SAA4D107E-7*
Type 4-cycle, water-cooled, direct injection
Aspiration Variable geometry, turbocharged, air-to-air aftercooled
Number of cylinders 4
Bore x stroke 107 mm x 124 mm 4.21" x 4.88"
Piston displacement 4.5 ltr 275 in³
Governor All-speed, electronic
Horsepower:
SAE J1995 - Gross 99 kW 133 HP
ISO 9249 / SAE J1349 - Net 98 kW 131 HP
Hydraulic fan at maximum speed - Net 91 kW 122 HP
Rated rpm
2200 rpm
Fan drive type Hydraulic
Lubrication system:
Method Gear pump, force lubrication
Filter Full-flow

Relief valve setting

27.4 MPa / 280 kg/cm² 3,974 psi
Hydraulic cylinders Double-acting, piston type
Number of cylinders: Bore Bore
Blade lift / 2 90 mm 3.5"
Blade tilt / 1 100 mm 4"
Blade angle / 2 90 mm 3.5"
Hydraulic oil capacity (refilling):
Power angle tilt dozer 64 ltr 17 U.S. 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

Travel speed
(quick shift mode)*
Forward Reverse
1st 0–3.4 km/h
0–2.1 mph
0–4.1 km/h
0–2.5 mph
2nd 0–5.6 km/h
0–3.5 mph
0–6.5 km/h
0–4.0 mph
3rd 0–9.0 km/h
0–5.6 mph
0–9.0 km/h
0–5.6 mph
Travel speed
(variable mode)
Forward Reverse
0–9.0 km/h
0–5.6 mph
0–9.0 km/h
0–5.6 mph

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.
D51PX-24
12470 kg 27,492 lb
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.
D51PX-24
14190 kg 31,504 lb

Coolant 37 ltr 9.8 U.S. gal
Fuel tank 270 ltr 71.3 U.S. gal
Engine oil 16 ltr 4.2 U.S. gal
Hydraulic tank 64 ltr 17 U.S. gal
Final drive (each side) 5.5ltr 1.5 U.S. gal
Diesel Exhaust Fluid (DEF) tank 20.5 ltr 5.42 U.S. gal

Minimum turning radius*
2.6 m
102"

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 grouse
Number of shoes (each side) 44
Grouser height 55 mm 2.2"
Shoe width (standard) 710 mm 28"
Ground contact area 38980 cm² 6,042 in²
Ground pressure
(with dozer, ROPS cab)
0.33 kgf/cm² / 32.0 kPa 4.64 psi
Track gauge 1880 mm 6'2"
Length of track on ground
2745 mm 9'0"

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