Caterpillar Farm tractors by year
Caterpillar is a global manufacturer of industrial equipment and was a pioneer in tracked machinery. Caterpillar tractors have been used for farming since their beginning, but the company's focus shifted to construction as rubber tire tractors dominated the agricultural market. Caterpillar re-entered the farm market with the Challenger line of rubber-tracked crawlers in 1987. The Challenger line was sold to AGCO in 2002.
Caterpillar - official site
| Model | Power | Years |
| 2-Ton | 27 hp[B] | 1925 - 1928 |
| 5-Ton | 44 hp[B] | 1925 - 1926 |
| 10-Ton | 61 hp[B] | 1925 |
| Sixty | 81 hp[B] | 1925 - 1931 |
| Thirty | 40 hp[B] | 1925 - 1938 |
| Twenty | 32 hp[B] | 1927 - 1931 |
| Ten | 15 hp[B] | 1928 - 1932 |
| Fifteen | 22 hp[B] | 1929 - 1933 |
| Diesel Sixty | 85 hp[B] | 1931 |
| Diesel Sixty-Five | 85 hp[B] | 1931 - 1932 |
| Fifty | 62 hp[B] | 1931 - 1937 |
| Twenty-Five | 33 hp[B] | 1931 - 1933 |
| Sixty-Five | 87 hp[B] | 1932 - 1933 |
| Thirty-Five | 48 hp[B] | 1932 - 1934 |
| Diesel Fifty | 73 hp[B] | 1933 - 1936 |
| Diesel Seventy-Five | 103 hp[B] | 1933 - 1935 |
| Diesel Thirty-Five | 50 hp[B] | 1933 - 1934 |
| Seventy | 77 hp[B] | 1933 - 1937 |
| Seventy-Five | 103 hp[B] | 1933 - 1935 |
| Twenty-Eight | 41 hp[B] | 1933 - 1935 |
| Diesel Forty | 62 hp[B] | 1934 - 1936 |
| Forty | 54 hp[B] | 1934 - 1936 |
| R2 | 36 hp[B] | 1934 - 1942 |
| R3 | 46 hp[B] | 1934 - 1935 |
| R5 | 64 hp[B] | 1934 - 1940 |
| Twenty-Two | 32 hp[B] | 1934 - 1939 |
| RD4 | 44 hp[B] | 1935 - 1940 |
| RD7 | 75 hp[B] | 1935 - 1940 |
| RD8 | 114 hp[B] | 1935 - 1936 |
| D8 | 115 hp | 1937 - 1965 |
| D2 | 30 hp[P] | 1938 - 1957 |
| D4 | 44 hp[B] | 1938 - 1959 |
| R4 | 40 hp[B] | 1938 - 1944 |
| D7 | 102 hp[B] | 1940 - 1954 |
| D6 | 86 hp[B] | 1941 - 1947 |
| D7C | 128 hp | 1955 - 1958 |
| D9 | 286 hp | 1955 - 1959 |
| D7D | unknown | 1959 - 1961 |
| D4D SA | 74 hp | 1966 - 1983 |
| D5 SA | unknown | 1967 - 1976 |
| D6C SA | 140 hp | 1970 - 1976 |
| D5B SA | 120 hp | 1977 - 1985 |
| D6D SA | 165 hp | 1977 - 1991 |
| D7G SA | 250 hp | 1980 - 1986 |
| D4E SA | 97 hp | 1984 - 1991 |
| D8L SA | 400 hp | 1984 - 1987 |
| D3B SA | 101 hp | 1985 - 1987 |
| AG6 | 240 hp | 1986 - 1993 |
| D3C SA | 110 hp | 1987 - 1991 |
[B]: Engine power estimated from belt horsepower. [P]: Engine power estimated from PTO horsepower. See individual tractor data listing for power details.
Caterpillar industrial tractors
Caterpillar skid-steer loaders