Komatsu D51PX-22 Crawler Dozer Specs

Category: Crawler Dozers ➔
Manufacturer: Komatsu ➔
Model: D51PX-22 ➔

Komatsu D51PX-22 crawler dozer is a mid-size tracked bulldozer designed for grading, dozing, and site preparation in construction, roadwork, and land clearing applications. It features a wide PX undercarriage for improved flotation and stability on soft or uneven ground, making it suitable for low-ground-pressure operation. The D51PX-22 is commonly equipped with a hydrostatic transmission, responsive blade control, and a fuel-efficient Komatsu engine. Its compact frame supports maneuverability in confined job sites while maintaining pushing performance. This model is used in earthmoving, utility work, and general contractor fleets where traction, control, and durability are required.

Dimensions

Komatsu D51PX-22 Crawler Dozer Dimensions specifications
Ground Clearance	1.30 ft (0.40 m)
Height - Top of Cab	9.90 ft (3.02 m)
Length of Track on Ground	9.00 ft (2.74 m)
Length w/ Blade	15.80 ft (4.82 m)
Width Over Tracks	8.50 ft (2.59 m)

Engine

Komatsu D51PX-22 Crawler Dozer Engine specifications
Aspiration	turbocharged air-to-air aftercooled
Displacement	408.00 cu in (6,685.94 cu cm)
Engine Model	SAA6D107E-1
Gross Power	133.00 hp (99.18 kw)
Make	Komatsu
Net Power	130.00 hp (96.94 kw)
Number of Cylinders	6
Power Measured @	2200 rpm

Hydraulic System

Komatsu D51PX-22 Crawler Dozer Hydraulic System specifications
Pump Flow Capacity	26.20 gpm (99.17 lpm)
Pump type	piston type hydraulic pump
Relief Valve Pressure	3983 psi

Operating Specifications

Komatsu D51PX-22 Crawler Dozer Operating Specifications specifications
Alternator Supplied Amperage	60 amps
Cooling System Fluid Capacity	9.30 gal (35.20 l)
Engine Oil Capacity	5.30 gal (20.06 l)
Final Drives Fluid Capacity	1.10 gal (4.16 l)
Fuel Capacity	71.30 gal (269.87 l)
Hydraulic Fluid Capacity	16.60 gal (62.83 l)
Operating Voltage	24 volts
Operating Weight	28,881.00 lbs (13,100.22 kg)

Standard Blade

Komatsu D51PX-22 Crawler Dozer Standard Blade specifications
Blade Angle (both directions)	28.5 degrees
Capacity	3.80 cu yd (2.91 cu m)
Height	43.80 in (111.25 cm)
Width	11.00 ft (3.35 m)

Transmission

Komatsu D51PX-22 Crawler Dozer Transmission specifications
Max Speed - Forward	5.60 mph (9.01 kph)
Max Speed - Reverse	5.60 mph (9.01 kph)
Number of Forward Gears	3
Number of Reverse Gears	3
Transmission Type	Dual-path hydrostatic transmission

Undercarriage

Komatsu D51PX-22 Crawler Dozer Undercarriage specifications
Ground Contact Area	6,042.00 cu in (99,010.86 cu cm)
Ground Pressure	4.8 psi
Number of Shoes per Side	44
Number of Track Rollers per Side	7
Standard Shoe Size	28.00 in (71.12 cm)
Track Gauge	6.20 ft (1.89 m)

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