Komatsu D31PX-21 II Crawler Dozer Specs

Category: Crawler Dozers ➔
Manufacturer: Komatsu ➔
Model: D31PX-21 II ➔

The Komatsu D31PX-21 II Crawler Dozer is a powerful and reliable piece of machinery, boasting a turbocharged engine model SAA4D102E-2 with a net power of 75 hp. With a variety of operating specifications such as a 43.6-gallon fuel capacity and a hydraulic fluid capacity of 12.4 gallons, this dozer is equipped for efficiency and performance. The machine's dimensions, at 7.5 feet wide and 13.2 feet long with the blade, make it versatile for various job sites. Additionally, its undercarriage features 40 shoes per side and a ground pressure of 4.2 psi, ensuring stability and traction on challenging terrain.

Dimensions

Komatsu D31PX-21 II Crawler Dozer Dimensions specifications
Ground Clearance	1.30 ft (0.40 m)
Height - Top of Cab	8.90 ft (2.71 m)
Length w/ Blade	13.20 ft (4.02 m)
Width Over Tracks	7.50 ft (2.29 m)

Engine

Komatsu D31PX-21 II Crawler Dozer Engine specifications
Aspiration	Turbocharged
Displacement	240.00 cu in (3,932.90 cu cm)
Engine Model	SAA4D102E-2
Net Power	75.00 hp (55.93 kw)
Number of Cylinders	4

Hydraulic System

Komatsu D31PX-21 II Crawler Dozer Hydraulic System specifications
Relief Valve Pressure	2990 psi

Operating Specifications

Komatsu D31PX-21 II Crawler Dozer Operating Specifications specifications
Cooling System Fluid Capacity	7.10 gal (26.87 l)
Engine Oil Capacity	3.30 gal (12.49 l)
Final Drives Fluid Capacity	0.90 gal (3.41 l)
Fuel Capacity	43.60 gal (165.03 l)
Hydraulic Fluid Capacity	12.40 gal (46.93 l)
Operating Weight	16,870.00 lbs (7,652.11 kg)

Standard Blade

Komatsu D31PX-21 II Crawler Dozer Standard Blade specifications
Blade Angle (both directions)	25 degrees
Height	2.90 in (7.37 cm)
Width	10.50 ft (3.20 m)

Transmission

Komatsu D31PX-21 II Crawler Dozer Transmission specifications
Max Speed - Forward	5.30 mph (8.53 kph)
Max Speed - Reverse	5.30 mph (8.53 kph)
Number of Forward Gears	3
Number of Reverse Gears	3
Transmission Type	dual-path hydrostatic transmission

Undercarriage

Komatsu D31PX-21 II Crawler Dozer Undercarriage specifications
Ground Contact Area	4,061.00 cu in (66,548.01 cu cm)
Ground Pressure	4.2 psi
Number of Shoes per Side	40
Number of Track Rollers per Side	6
Standard Shoe Size	24.00 in (60.96 cm)
Track Gauge	5.50 ft (1.68 m)
Track Pitch	65.00 in (165.10 cm)

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