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Bolinder-Munktell BM-21

Bolinder-Munktell BM-21 tractor
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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.
Bolinder-Munktell BM-21tractorfarm tractorspecificationsenginetransmissiondimensionspowerBolinder-MunktellVolvo
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)

Related Models

Bolinder-Munktell BM-20

Model:BM-20