Caterpillar Farm tractors by power
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 |
| Ten | 15 hp[B] | 1928 - 1932 |
| Fifteen | 22 hp[B] | 1929 - 1933 |
| 2-Ton | 27 hp[B] | 1925 - 1928 |
| D2 | 30 hp[P] | 1938 - 1957 |
| Twenty-Two | 32 hp[B] | 1934 - 1939 |
| Twenty | 32 hp[B] | 1927 - 1931 |
| Twenty-Five | 33 hp[B] | 1931 - 1933 |
| R2 | 36 hp[B] | 1934 - 1942 |
| R4 | 40 hp[B] | 1938 - 1944 |
| Thirty | 40 hp[B] | 1925 - 1938 |
| Twenty-Eight | 41 hp[B] | 1933 - 1935 |
| D4 | 44 hp[B] | 1938 - 1959 |
| RD4 | 44 hp[B] | 1935 - 1940 |
| 5-Ton | 44 hp[B] | 1925 - 1926 |
| R3 | 46 hp[B] | 1934 - 1935 |
| Thirty-Five | 48 hp[B] | 1932 - 1934 |
| Diesel Thirty-Five | 50 hp[B] | 1933 - 1934 |
| Forty | 54 hp[B] | 1934 - 1936 |
| 10-Ton | 61 hp[B] | 1925 |
| Diesel Forty | 62 hp[B] | 1934 - 1936 |
| Fifty | 62 hp[B] | 1931 - 1937 |
| R5 | 64 hp[B] | 1934 - 1940 |
| Diesel Fifty | 73 hp[B] | 1933 - 1936 |
| D4D SA | 74 hp | 1966 - 1983 |
| RD7 | 75 hp[B] | 1935 - 1940 |
| Seventy | 77 hp[B] | 1933 - 1937 |
| Sixty | 81 hp[B] | 1925 - 1931 |
| Diesel Sixty | 85 hp[B] | 1931 |
| Diesel Sixty-Five | 85 hp[B] | 1931 - 1932 |
| D6 | 86 hp[B] | 1941 - 1947 |
| Sixty-Five | 87 hp[B] | 1932 - 1933 |
| D4E SA | 97 hp | 1984 - 1991 |
| D3B SA | 101 hp | 1985 - 1987 |
| D7 | 102 hp[B] | 1940 - 1954 |
| Seventy-Five | 103 hp[B] | 1933 - 1935 |
| Diesel Seventy-Five | 103 hp[B] | 1933 - 1935 |
| D3C SA | 110 hp | 1987 - 1991 |
| RD8 | 114 hp[B] | 1935 - 1936 |
| D8 | 115 hp | 1937 - 1965 |
| D5B SA | 120 hp | 1977 - 1985 |
| D7C | 128 hp | 1955 - 1958 |
| D6C SA | 140 hp | 1970 - 1976 |
| D6D SA | 165 hp | 1977 - 1991 |
| AG6 | 240 hp | 1986 - 1993 |
| D7G SA | 250 hp | 1980 - 1986 |
| D9 | 286 hp | 1955 - 1959 |
| D8L SA | 400 hp | 1984 - 1987 |
| D5 SA | unknown | 1967 - 1976 |
| D7D | unknown | 1959 - 1961 |
[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
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