Bolinder-Munktell Farm tractors by year
The Swedish tractor manufacturer Bolinder-Munktell (BM) was formed in 1932 with the merger of Bolinder and Munktell, engine and tractor manufacturers respectively. Volvo had begun partnerships in Bolinder-Munktell in the 1940s and purchased BM enitrely in 1950. The Bolinder-Munktell name was retained until the 1970s when the Volvo BM brand came into use. Volvo later sold all its tractor operations to Valmet.
BM Tractors - information from Volvo
BM-sidan.se - site dedicated to BM Volvo
| Model | Power | Years |
| 30-40 | 40 hp | 1913 - 1915 |
| 25 | 32 hp | 1934 - 1938 |
| BM-20 | 41 hp | 1944 - 1950 |
| BM-10 | 20 hp | 1947 - 1952 |
| BM-21 | 43 hp | 1951 - 1952 |
| 36 | 41 hp | 1953 - 1954 |
| 55 | 46 hp | 1953 - 1959 |
| 230 | 29 hp | 1955 - 1961 |