Bolinder-Munktell BM-20 Tractor

Manufacturer Bolinder-Munktell
Price -
Model BM-20
Equipment Type Standard-Tread Tractors
Factory Eskilstuna, Sweden

BOLINDER-MUNKTELL BM-20 POWER

Engine 41 hp/30.6 kW

ENGINE DETAIL

The Bolinder-Munktell BM-20, equipped with a robust 5.3 L displacement two-cylinder diesel engine, delivers 41 hp at a lower rated RPM of 1050, making it suitable for heavy-duty applications with high torque requirements. Its liquid cooling system, combined with a coolant capacity of 23.3 quarts, ensures efficient temperature regulation under load, though it does necessitate regular monitoring and maintenance. With an electric starter operating at 24 volts, the tractor provides reliable starting capability, though the higher voltage may require specialized knowledge for repairs or modifications.

Description Bolinder W5/diesel/2-cylinder/liquid-cooled
Displacement 323.4 ci/5.3 L
Bore/Stroke 5.91x5.91 inches/150 x 150 mm
Power 41 hp/30.6 kW
Rated RPM 1050
Starter electric
Starter volts 24
Oil capacity 11.1 qts/10.5 L
Coolant capacity 23.3 qts/22.1 L

BOLINDER-MUNKTELL BM-20 ENGINE

The Bolinder-Munktell BM-20 is powered by a robust Bolinder 5.3L 2-cylinder diesel engine, providing a balance of torque and efficiency for medium-duty agricultural tasks. Its 19.8-gallon (74.9 L) fuel tank ensures extended operational hours, reducing downtime for refueling. However, the 2-cylinder design may present limitations in high-power applications or heavy pulling scenarios, necessitating careful consideration of load requirements during operation.

Description Bolinder 5.3L 2-cyl diesel
Fuel tank 19.8 gal/74.9 L

TRANSMISSION

The Bolinder-Munktell BM-20 features a 5-speed forward and 1-speed reverse gear configuration, which offers a good balance between speed and torque for a variety of agricultural tasks. The limited gear range may pose challenges in more complex terrains requiring frequent gear shifting, but it provides an intuitive operation for basic farming needs. Ideal for small to medium-sized farms, this tractor is efficient for straightforward tasks such as plowing, harrowing, and transport within flat to moderately hilly areas.

Type gear
Gears 5 forward and 1 reverse

MECHANICAL

The Bolinder-Munktell BM-20 features a 4x2 2WD chassis, ideal for flat terrain but may struggle in slippery or uneven conditions. Its manual steering offers a straightforward control experience, although it may require more physical effort for maneuvering compared to power-assisted systems. The 5-speed transmission allows for versatile speed adjustments, making it suitable for a range of agricultural tasks but may limit performance in heavy towing scenarios due to the two-wheel drive configuration.

Chassis 4x2 2WD
Steering manual
Cab Open operator station.
Transmission 5-speed gear

BOLINDER-MUNKTELL BM-20 TIRES

The Bolinder-Munktell BM-20 tractor features front tires sized 7.50x18 and rear tires of 13x28, providing a balance between maneuverability and traction, ideal for agricultural operations. However, the relatively narrow front tires can lead to reduced stability on uneven terrain, which may pose a challenge in hilly fields. Overall, it excels in tasks requiring moderate pulling power and is suited for small to medium-scale farming scenarios.

Ag front 7.50x18
Ag rear 13x28

DIMENSIONS

Wheelbase 70.9 inches/180 cm
Length 128 inches/325 cm
Width 69.8 inches/177 cm
Height (steering wheel) 72.1 inches/183 cm
Height (hood) 55.9 inches/141 cm
Weight 5842 lbs/2649 kg
Front tread 52.4 inches/133 cm
Rear tread 55.1 inches/139 cm

DIMENSIONS & TIRES

The Bolinder-Munktell BM-20 tractor features a compact wheelbase of 70.9 inches, enhancing maneuverability in tight spaces, making it suitable for small to medium-sized farms. Weighing 5842 lbs, its robust construction supports stability during heavy-duty tasks, although it may limit transportability. The front tire size of 7.50x18 and rear tire size of 13x28 provide a balance of traction and flotation, essential for varied soil conditions but may require careful management of tire pressure for optimal performance.

Wheelbase 70.9 inches/180 cm
Weight 5842 lbs/2649 kg
Front tire 7.50x18
Rear tire 13x28

ELECTRICAL

Charging system generator
Batteries 4
Battery volts 6


Last Updated 2025-01-01
Stephen is a passionate tractor hobbyist with a deep-seated love for all things mechanized and agricultural. Growing up in a rural setting, he developed a fascination with these mighty machines that have played a crucial role in shaping the farming industry.

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