Bolinder-Munktell BM 55 / Volvo T 55

The successors to the BM 20 and the Volvo T 43 were the BM 55 and the T 55. These tractors were painted red or green depending on whether they were to be sold as a Volvo tractor or a BM tractor by the respective dealer network. From 1958 on, all BM/T 55s were painted green. The four-cylinder Bolinders 1054 engine developed 53 hk at "normal" engine and 57 hk at the maximum speed of 1 800 r/min. This model was regarded as rugged and uncomplicated, well suited for export. It had a five-speed gearbox which gave it a top speed of 27,4 km/h. A dog-clutch differential lock was introduced later.
Standard tire dimensions were 14-34 rear and 7.50-18 front. The total weight of 2 950 kg could be increased to about 4 500 kg with weights and with liquid in the tires. The pulley shaft was much appreciated, especially in export markets, for driving stationary plant via a flat belt. The capacity of the BM 55 and its powerful engine made it attractive for manufacturers of built-on equipment outside the agricultural sector.
BM 55 specifications
Engine Bolinders 1054
Cylinders 4
Cylinder capacity, l 4,48
Rated output, hk 57
Gears, forward/reverse 5/1
Wheelbase, mm 2 175
Operating weight, kg 4 560
Production no. 1 745
Production year 1953–1959