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Current number of specifications

 
Komatsu D21A-5 Crawler Tractor

Selected Dimensions

Dimensions
A. Length w/ Blade11.1 ft in3385 mm
B. Width Over Tracks5.3 ft in1610 mm
C. Height to Top of Cab7.1 ft in2160 mm
D. Length of Track on Ground5.5 ft in1685 mm
E. Ground Clearance1 ft in310 mm
F. Length w/o Blade8 ft in2440 mm
Undercarriage
G. Track Gauge4.3 ft in1310 mm
H. Standard Shoe Size11.8 in300 mm

Specification

Engine
MakeKomatsu
Model4D92-2P
Gross Power39 hp29.1 kw
Power Measured @2450 rpm
Max Torque108.4 lb ft147 Nm
Displacement179.4 cu in2.9 L
Number of Cylinders4
Operational
Operating Weight7980.7 lb3620 kg
Fuel Capacity15.9 gal60 L
Cooling System Fluid Capacity3.4 gal13 L
Transmission
TypeHS
Number of Forward Gears2
Number of Reverse Gears2
Max Speed - Forward2.7 mph4.4 km/h
Max Speed - Reverse3.4 mph5.4 km/h
Undercarriage
Ground Pressure4.3 psi29.4 kPa
Standard Shoe Size11.8 in300 mm
Number of Shoes per Side37
Number of Track Rollers per Side5
Track Pitch5.3 in135 mm
Track Gauge4.3 ft in1310 mm
Hydraulic System
Relief Valve Pressure2204.6 psi15200.3 kPa
Pump Flow Capacity14 gal/min53 L/min
Standard Blade
Width7.1 ft in2170 mm
Height23.2 in590 mm
Capacity0.99 yd30.76 m3
Cutting Depth13.8 in350 mm
Dimensions
Length w/o Blade8 ft in2440 mm
Length w/ Blade11.1 ft in3385 mm
Width Over Tracks5.3 ft in1610 mm
Height to Top of Cab7.1 ft in2160 mm
Length of Track on Ground5.5 ft in1685 mm
Ground Clearance1 ft in310 mm