Bolinder-Munktell
Bolinder-Munktell BM-21
The Bolinder-Munktell BM-21 is a standard-tread farm tractor produced from 1951 to 1952 by Bolinder-Munktell, a part of Volvo, built in Eskilstuna, Sweden. It features a 5.3L 2-cylinder liquid-cooled diesel engine producing 43 hp (32.1 kW) at 1050 RPM, with a 5-speed gear transmission (5 forward and 1 reverse). The tractor has two-wheel drive, manual steering, and an open operator station. It includes a rear PTO running at 540 RPM. Dimensions include a wheelbase of 80.9 inches (205 cm), length of 128 inches (325 cm), width of 71.7 inches (182 cm), and weight of 5897 lbs (2674 kg). The front tires are 7.50x18 and rear tires 13x30. Electrical system uses a generator with 4 batteries at 6 volts.
Power43 hp
Founded1951 - 1952
ModelBM-21
Technical Specifications
Detailed specifications and technical data for Bolinder-Munktell BM-21
Power
| Engine power | 43 hp (32.1 kW) |
|---|
Tires
| Ag rear | 13x30 |
|---|---|
| Ag front | 7.50x18 |
Engine
| Type | diesel |
|---|---|
| Model | Bolinder W5 |
| Power | 43 hp (32.1 kW) |
| Cooling | liquid-cooled |
| Starter | electric |
| Cylinders | 2-cylinder |
| Fuel tank | 19.8 gal (74.9 L) |
| Rated RPM | 1050 |
| Bore/Stroke | 5.91x5.91 inches (150 x 150 mm) |
| Displacement | 323.4 ci (5.3 L) |
| Oil capacity | 11.1 qts (10.5 L) |
| Starter volts | 24 |
| Coolant capacity | 23.3 qts (22.1 L) |
Dimensions
| Width | 71.7 inches (182 cm) |
|---|---|
| Length | 128 inches (325 cm) |
| Weight | 5897 lbs (2674 kg) |
| Wheelbase | 80.9 inches (205 cm) |
| Rear tread | 57.1 inches (145 cm) |
| Front tread | 52.4 inches (133 cm) |
| Height (hood) | 59.8 inches (151 cm) |
| Height (steering wheel) | 72.8 inches (184 cm) |
Electrical
| Batteries | 4 |
|---|---|
| Battery volts | 6 |
| Charging system | generator |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Steering | Manual steering |
| Operator station | Open operator station |
Production
| Type | Standard-tread tractor |
|---|---|
| Built in | Eskilstuna, Sweden |
| Years made | 1951 - 1952 |
Transmission
| Type | gear |
|---|---|
| Gears | 5 forward and 1 reverse |
Power Take-off (PTO)
| Rear PTO Type | 540 (1.375) |
|---|