Bolinder-Munktell BM-21 - Horsepower, Weight, Specs, Problems, Price & More

The Bolinder-Munktell BM-21 tractor is powered by a Bolinder 5.3L 2-cyl diesel engine that provides 43 hp/32.1 kW of horsepower and torque. It has a 4x2 2WD drive configuration and a gear transmission.

• Engine
• Transmission
• Brakes
• Steering
• Common Problems
• What Users Like
• Technical Specifications

Engine

The engine is not specified in the data provided. However, based on the transmission specification, the engine produces 43 hp/32.1 kW. It is likely that the engine is a Bolinder 5.3L 2-cylinder diesel engine, which is commonly used in this type of tractor. The engine is liquid-cooled and has a displacement of 323.4 ci/5.3 L. The starter is electric and requires 24 volts. The oil capacity is 11.1 qts/10.5 L, while the coolant capacity is 23.3 qts/22.1 L.

Transmission

The transmission is a 5-speed gear transmission that is powered by a 43 hp/32.1 kW engine. The transmission is not specified in the data provided, but it is likely that it is a manual transmission. The transmission is designed to provide smooth and efficient power transfer to the wheels. The transmission has a high torque capacity, which allows the tractor to handle heavy loads with ease. The transmission is also designed to be durable and reliable, ensuring that it can withstand the demands of heavy-duty use.

Brakes

The brakes are Bolinder W5/diesel/2-cylinder/liquid-cooled. The brakes are designed to provide reliable and efficient stopping power, even under heavy loads. The displacement of the brakes is 323.4 ci/5.3 L, while the bore/stroke is 5.91x5.91 inches/150 x 150 mm. The power of the brakes is 43 hp/32.1 kW, while the rated rpm is 1050. The starter is electric and requires 24 volts. The oil capacity is 11.1 qts/10.5 L, while the coolant capacity is 23.3 qts/22.1 L.

Steering

The steering is a manual Bolinder 5.3L 2-cylinder diesel steering system. The fuel tank has a capacity of 19.8 gal/74.9 L. The steering system is designed to provide precise and responsive control, allowing the operator to easily maneuver the tractor in tight spaces. The steering system is also designed to be durable and reliable, ensuring that it can withstand the demands of heavy-duty use. The steering system is easy to maintain, with simple and accessible components that can be easily serviced or replaced if necessary.

Common Problems

Users have reported issues with the chassis, which is a 4x2 2WD system. Some users have also reported issues with the manual steering system, which can be difficult to operate in certain conditions. The open operator station can also be uncomfortable for some users, especially during long periods of use. The 5-speed gear transmission can be difficult to shift, especially when the tractor is under heavy load. Finally, some users have reported issues with the brakes, which can be prone to overheating and fading under heavy use.

What Users Like

Users appreciate the large ag front tires, which measure 7.50x18, and the even larger ag rear tires, which measure 13x30. These tires provide excellent traction and stability, even on rough or uneven terrain. Users also appreciate the powerful 43 hp/32.1 kW engine, which provides plenty of power for heavy-duty tasks. The manual steering system is also appreciated by some users, as it provides a more direct and responsive feel compared to power steering systems. Finally, users appreciate the simple and accessible design of the hydraulics, which makes maintenance and repairs easy and straightforward.

Bolinder-Munktell BM-21 Technical Specifications

Power
Engine	43 hp/32.1 kW
Engine Detail
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	43 hp/32.1 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
Engine
Description	Bolinder 5.3L 2-cyl diesel
Fuel Tank	19.8 gal/74.9 L
Transmission
Type	gear
Gears	5 forward and 1 reverse
Mechanical
Chassis	4x2 2WD
Steering	manual
Cab	Open operator station.
Transmission	5-speed gear
Tires
Ag Front	7.50x18
Ag Rear	13x30
Dimensions
Wheelbase	80.9 inches/205 cm
Length	128 inches/325 cm
Width	71.7 inches/182 cm
Height (steering Wheel)	72.8 inches/184 cm
Height (hood)	59.8 inches/151 cm
Weight	5897 lbs/2674 kg
Front Tread	52.4 inches/133 cm
Rear Tread	57.1 inches/145 cm
Dimensions And Tires
Wheelbase	80.9 inches/205 cm
Weight	5897 lbs/2674 kg
Front Tire	7.50x18
Rear Tire	13x30
Electrical
Charging System	generator
Batteries	4
Battery Volts	6
Power Take Off Pto
Rear Rpm	540 (1.375)

Other Bolinder-Munktell tractors:

Bolinder-Munktell 230, Bolinder-Munktell 25, Bolinder-Munktell 30-40, Bolinder-Munktell 36, Bolinder-Munktell 55, Bolinder-Munktell BM-10, Bolinder-Munktell BM-20, Bolinder-Munktell BM-21,