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Komatsu

D31EX-21

Crawler Dozer

Operating Weight
15,720 lb
Max Speed - Forward
5.3 mph
Net Power
75.0 hp
All crawler dozers
Komatsu D31EX-21 Crawler Dozer
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Specifications

29 data points

Operating Specifications

Operating Specifications specifications
Operating Weight15,720 lb
Fuel Capacity43.6 gal
Cooling System Fluid Capacity7.1 gal
Final Drives Fluid Capacity0.9 gal
Engine Oil Capacity3.3 gal
Hydraulic Fluid Capacity12.4 gal

Engine

Engine specifications
Engine ModelSAA4D102E-2
Displacement240 in³
Net Power75.0 hp
Aspirationturbocharged and air-to-air aftercooled

Hydraulic System

Hydraulic System specifications
Relief Valve Pressure2,990 psi

Dimensions

Dimensions specifications
Ground Clearance16 in
Height - Top of Cab107 in
Length of Track on Ground79 in
Width Over Tracks73 in
Length w/ Blade158 in

Transmission

Transmission specifications
Max Speed - Forward5.3 mph
Max Speed - Reverse5.3 mph
Transmission Typedual-path hydrostatic transmission
Number of Forward Gears3
Number of Reverse Gears3

Undercarriage

Undercarriage specifications
Ground Pressure6 psi
Track Gauge57 in
Number of Track Rollers per Side5
Number of Shoes per Side38
Standard Shoe Size16 in
Ground Contact Area2,496 in³
Track Pitch57 in

Standard Blade

Standard Blade specifications
Blade Angle (both directions)25 °

Comparable machines

Other crawler dozers in a similar weight class.