Comparing the Allis Chalmers HD21 and the Caterpillar D8L SA Special Application

This page provides a detailed comparison of the specifications for the Allis Chalmers HD21 and the Caterpillar D8L SA Special Application. Explore key differences and similarities across various aspects, including Power Output, Operating Weight and Cylinders.

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Allis Chalmers HD21 Tractor
Allis Chalmers HD21 Tractor
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Caterpillar D8L SA Special Application Tractor
Caterpillar D8L SA Special Application Tractor
Caterpillar D8L SA Special Application Tractor
SpecificationAllis Chalmers HD21Caterpillar D8L SA Special Application
General Information
Manufacturer
Allis Chalmers
Caterpillar
Model
HD21
D8L SA Special Application
Category
Crawler, Agricultural
Engine
Manufacturer
Allis-Chalmers
Caterpillar
Model
3408
Power Output
225hp
400hp
Rated RPM
1,800RPM
1,900RPM
Cylinders
6
8
Displacement
844ci
1,099ci
Bore
5.25in
5.4in
Stroke
6.5in
6in
Transmission
Type
Torque Converter
Power Shift
Dimensions & Weight
Length
198in
215in
Width
136in
Height
99in
Operating Weight
45,500lb
80,820lb
Hydraulics
System Type
Load sensing
Chassis & Drive
Chassis Type
Crawler
Brake Type
Wet disc
Electrical
Starter Type
Electric
Electric
Capacities
Coolant
80qts
98qts