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ATC
Explore 14 farm tractor models. Follow a model into its engine specifications, transmissions, dimensions, historical photographs, and available test records.
About ATC
American Tractor Corporation built TerraTrac crawler tractors in Churubusco, Indiana. Associated with the Rojtman family, its machinery business became part of J. I. Case during the 1956–1957 merger period.
- Beginning
- TerraTrac production documented by 1950
- Founder / origin
- Rojtman family, associated with Marc B. Rojtman
- Known for
- Small crawler tractors and industrial machinery
- Sale / later history
- Merged into J. I. Case; Case records the acquisition in 1957
The TerraTrac business
ATC developed crawler tractors for agricultural and industrial work from its Indiana factory. The reviewed sources establish production by 1950, but do not support treating that production year as an undisputed incorporation date.
Becoming part of Case
TractorData places the merger in late 1956, while Case’s own milestone history dates its ATC acquisition to 1957. ATC’s crawler business contributed to Case’s construction-equipment line; this was a merger into a successor business, not simply an unexplained closure.
Sources & further reading
- TractorData — ATC brand history and models (opens in a new tab)
- CASE — company milestones, including the 1957 ATC acquisition (opens in a new tab)
- Wessels Living History Farm — Case and ATC (opens in a new tab)
History reviewed 2026-10-20.
Showing 14 of 14 models
600
1955–1957
62 hp
Source index power
Tracks
Drive
400
1954–1956
42 hp
Source index power
Tracks
Drive
500
1954–1957
42 hp
Source index power
Tracks
Drive
200
1954–1956
36 hp
Source index power
Tracks
Drive
300
1954–1955
36 hp
Source index power
Tracks
Drive
356
1955–1956
36 hp
Source index power
Tracks
Drive
GT-30
1951–1954
33 hp
Engine estimate from belt power
Tracks
Drive
DT-34
1952–1954
31 hp
Source index power
Tracks
Drive
GT-28
1953–1954
30 hp
Source index power
Tracks
Drive
GT-32
1953–1954
30 hp
Source index power
Tracks
Drive
GT-34
1951–1954
30 hp
Source index power
Tracks
Drive
GT-25
1950–1953
25 hp
Source index power
Tracks
Drive
M-2
1952–1953
Power not listed
No index power figure
Tracks
Drive
M-4
1954
Power not listed
No index power figure
Tracks
Drive
Index power values can include estimates derived from belt or PTO power. They are identified on each model card and are not interchangeable with a measured engine rating. Model years and missing values follow the source index.