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Komatsu

D21A-8

Crawler Dozer

Operating Weight
8,690 lb
Max Speed - Forward
2.7 mph
Gross Power
43.1 hp
Net Power
40.0 hp
All crawler dozers
Komatsu D21A-8 Crawler Dozer
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Specifications

29 data points

Operating Specifications

Operating Specifications specifications
Operating Weight8,690 lb
Fuel Capacity15.9 gal
Cooling System Fluid Capacity2.6 gal
Final Drives Fluid Capacity1.6 gal
Engine Oil Capacity1.7 gal
Hydraulic Fluid Capacity5.5 gal

Engine

Engine specifications
Engine Model4D94LE-2
Displacement186 in³
Gross Power43.1 hp
Net Power40.0 hp
Number of Cylinders4
Aspirationnaturally aspirated
MakeKomatsu

Dimensions

Dimensions specifications
Height - Top of Cab97 in
Width Over Tracks53 in
Length w/ Blade133 in

Transmission

Transmission specifications
Max Speed - Forward2.7 mph
Max Speed - Reverse3.5 mph
Transmission TypeKomatsu HYDROSHIFT transmission
Number of Forward Gears2
Number of Reverse Gears2

Undercarriage

Undercarriage specifications
Ground Pressure5 psi
Number of Track Rollers per Side5
Number of Shoes per Side37
Standard Shoe Size12 in
Ground Contact Area1,570 in³

Standard Blade

Standard Blade specifications
Width85 in
Height3 in
Blade Angle (both directions)25 °

Comparable machines

Other crawler dozers in a similar weight class.