Categories ↠ Crawler Dozers ↠ Komatsu D31EX-21

Komatsu D31EX-21 Crawler Dozer

Category: Crawler Dozers ➔
Manufacturer: Komatsu ➔
Model: D31EX-21 ➔

The Komatsu D31EX-21 Crawler Dozer is a versatile and powerful machine designed for various earthmoving and construction tasks. With a turbocharged and air-to-air aftercooled engine model SAA4D102E-2, this bulldozer offers a net power of 75 hp to tackle challenging terrains with ease. Operating at an operating weight of 15,720 lbs, this dozer boasts a hydraulic system relief valve pressure of 2990 psi and a ground pressure of 6.3 psi. Equipped with a dual-path hydrostatic transmission, it offers a maximum forward and reverse speed of 5.3 mph, making it efficient for various projects.

See all Komatsu D31EX-21s for sale

Dimensions

Ground Clearance	1 ft (0 m)
Height - Top of Cab	9 ft (3 m)
Length of Track on Ground	7 ft (2 m)
Length w/ Blade	13 ft (4 m)
Width Over Tracks	6 ft (2 m)

Engine

Aspiration	turbocharged and air-to-air aftercooled
Displacement	240 cu in (3,933 cu cm)
Engine Model	SAA4D102E-2
Net Power	75 hp (56 kw)

Hydraulic System

Relief Valve Pressure

2990 psi

Operating Specifications

Cooling System Fluid Capacity	7 gal (27 l)
Engine Oil Capacity	3 gal (12 l)
Final Drives Fluid Capacity	1 gal (3 l)
Fuel Capacity	44 gal (165 l)
Hydraulic Fluid Capacity	12 gal (47 l)
Operating Weight	15,720 lbs (7,130 kg)

Standard Blade

Blade Angle (both directions)

25 degrees

Transmission

Max Speed - Forward	5 mph (9 kph)
Max Speed - Reverse	5 mph (9 kph)
Number of Forward Gears	3
Number of Reverse Gears	3
Transmission Type	dual-path hydrostatic transmission

Undercarriage

Ground Contact Area	2,496 cu in (40,902 cu cm)
Ground Pressure	6.3 psi
Number of Shoes per Side	38
Number of Track Rollers per Side	5
Standard Shoe Size	16 in (41 cm)
Track Gauge	5 ft (1 m)
Track Pitch	57 in (145 cm)

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