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Current number of specifications

 
Komatsu D21A-8 Crawler Tractor

Selected Dimensions

Dimensions
A. Length w/ Blade11 ft in3365 mm
B. Width Over Tracks4.3 ft in1310 mm
C. Height to Top of Cab8 ft in2450 mm
Undercarriage
H. Standard Shoe Size11.8 in300 mm

Specification

Engine
MakeKomatsu
Model4D94LE-2
Gross Power43.1 hp32.2 kw
Net Power40 hp29.5 kw
Displacement186 cu in3.1 L
Aspirationnaturally aspirated
Number of Cylinders4
Operational
Operating Weight8690 lb3940 kg
Fuel Capacity15.9 gal60 L
Cooling System Fluid Capacity2.6 gal10 L
Engine Oil Capacity1.7 gal6.6 L
Hydraulic Fluid Capacity5.5 gal21 L
Final Drives Fluid Capacity1.6 gal6 L
Transmission
TypeKomatsu HYDROSHIFT transmission
Number of Forward Gears2
Number of Reverse Gears2
Max Speed - Forward2.7 mph4.4 km/h
Max Speed - Reverse3.5 mph5.6 km/h
Undercarriage
Ground Pressure4.8 psi32.9 kPa
Ground Contact Area1570 in21 m2
Standard Shoe Size11.8 in300 mm
Number of Shoes per Side37
Number of Track Rollers per Side5
Standard Blade
Width7.1 ft in2170 mm
Height2.7 in820 mm
Blade Angle (both directions)25 degrees
Cutting Depth14 in355 mm
Dimensions
Length w/ Blade11 ft in3365 mm
Width Over Tracks4.3 ft in1310 mm
Height to Top of Cab8 ft in2450 mm