McCormick-Deering 20 Industrial 1929
McCormick-Deering 20 Industrial 1929
Model history
Model introduced 1923
Model discontinued 1935
Model status Discontinued
No. produced 17,232
Superseded by International 20 Industrial
Engine Specification
Engine make International
Fuel type gasoline
Power hp 30 belt, 23 drawbar
Governed rpm 1000
Displacement cu in /(litre) 284 ci
No. of Cylinders 4
Bore in (mm) 4.25 in
Stroke in (mm) 5 in
Cooling system Water
Naturally aspirated, Turbo or Supercharged NA
Transmission Details
Transmission type sliding gear
Gearbox make International
Forward 3
Reverse 1
Drive 2-WD
Linkage Category Unknown
Tyre Sizes (std/options)
Front solid rubber 29"x5"
Rear solid rubber 40"x5"
Tractor Dimensions
Length (inches/metres) 118 in
Width (inches/meters) 65 in
Height (inches/meters) 62 in
Weight (nominal) lb/kg 4740 lb
Turning circle (nominal) inches/meters 28 ft
Wheelbase 78 in
Other info
Factories Tractor Works, Chicago, Illinois
Plow rating
Nebraska Tests No. 194
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The Edrob/McCormick-Deering 20 Industrial was built by International Harvester from 1923 to 1935 in the Chicago, Illinois Tractor Works factory. For 1936 to 1940 it was renamed International 20 Industrial.

Model HistoryEdit

International Harvester began building the McCormick-Deering 10-20 Industrial in 1923. The first tractors built were the same as the agricultural 10-20s except for cast iron disk wheels. In 1924 a coil-spring front suspension was added, along with rear-wheel brakes, a high-back seat, and a foot accelerator. In 1925 the front suspension was changed to one with transverse leaf springs. Also the tractor was given a high-speed high gear (over 10 mph). Somewhere during this time the 10-20 became the McCormick-Deering 20 Industrial, or Model 20. In 1936 the name was changed to International 20 Industrial.

Timeline Edit

  • 1923: McCormick-Deering 10-20 Industrial introduced, included with regular 10-20 serial number range
  • 1926: McCormick-Deering 20 Industrial assigned unique serial number range
  • 1936: Name changed to International 20 Industrial
  • 1940: Production ended

Factory locations Edit

International Harvester Tractor Works, Chicago, Illinois


See infobox for basic details

Variations and Options Edit

pneumatic tires, dual rear tires, 4-speed transmission (late models)

Serial Numbers Information Edit

Year Serial run Number Built[1] Notes (Total built 17,232).
1926 IN501- 1204
1927 1842
1928 3048
1929 4607
1930 3397
1931 1831
1932 715
1933 206
1934 209
1935 173

Preserved tractorsEdit

Gallery Edit

Add extra photos here please.

See alsoEdit


  1. Klancher, Lee 1996. International Harvester Photographic History, Motorbooks International, Osceola, Wisconsin, p.34

External linksEdit

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