Skip to content
Komatsu

D21A-5

Crawler Dozer

Operating Weight
7,981 lb
Max Speed - Forward
2.8 mph
Gross Power
39.0 hp
All crawler dozers
Komatsu D21A-5 Crawler Dozer
1 / 5
Image 1 of 5
Image: jmwood.com

Specifications

31 data points

Operating Specifications

Operating Specifications specifications
Operating Weight7,981 lb
Fuel Capacity15.9 gal
Cooling System Fluid Capacity3.5 gal

Engine

Engine specifications
Engine Model4D92-2P
Displacement179 in³
Power Measured @2,450 rpm
Gross Power39.0 hp
Number of Cylinders4
Max Torque108 lb-ft

Hydraulic System

Hydraulic System specifications
Pump Flow Capacity14.1 gal/min
Relief Valve Pressure2,205 psi

Dimensions

Dimensions specifications
Ground Clearance13 in
Height - Top of Cab85 in
Length of Track on Ground67 in
Width Over Tracks64 in
Length w/ Blade134 in
Length w/o Blade97 in

Transmission

Transmission specifications
Max Speed - Forward2.8 mph
Max Speed - Reverse3.4 mph
Transmission TypeHS
Number of Forward Gears2
Number of Reverse Gears2

Undercarriage

Undercarriage specifications
Ground Pressure4 psi
Track Gauge52 in
Number of Track Rollers per Side5
Number of Shoes per Side37
Standard Shoe Size12 in
Track Pitch5 in

Standard Blade

Standard Blade specifications
Width86 in
Height23 in
Capacity0.99 yd³

Comparable machines

Other crawler dozers in a similar weight class.