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Current number of specifications

 
Komatsu D21A-7 Crawler Tractor

Selected Dimensions

Dimensions
A. Length w/ Blade11.2 ft in3400 mm
B. Width Over Tracks5.3 ft in1610 mm
C. Height to Top of Cab8.1 ft in2475 mm
D. Length of Track on Ground5.5 ft in1685 mm
E. Ground Clearance0.97 ft in295 mm
F. Length w/o Blade8.4 ft in2560 mm
Undercarriage
G. Track Gauge4.3 ft in1310 mm
H. Standard Shoe Size11.8 in300 mm

Specification

Engine
MakeKomatsu
Model4D95S
Gross Power40 hp29.8 kw
Power Measured @2450 rpm
Displacement164.2 cu in2.7 L
Number of Cylinders4
Operational
Operating Weight7936.6 lb3600 kg
Transmission
TypeHS
Number of Forward Gears2
Number of Reverse Gears2
Undercarriage
Standard Shoe Size11.8 in300 mm
Number of Track Rollers per Side5
Track Pitch5.3 in135 mm
Track Gauge4.3 ft in1310 mm
Standard Blade
Width7.1 ft in2170 mm
Height23.2 in590 mm
Dimensions
Length w/o Blade8.4 ft in2560 mm
Length w/ Blade11.2 ft in3400 mm
Width Over Tracks5.3 ft in1610 mm
Height to Top of Cab8.1 ft in2475 mm
Length of Track on Ground5.5 ft in1685 mm
Ground Clearance0.97 ft in295 mm