- Vehicle type: unspecified
- Rigid chassis
- WhichTractor size: Standard-size
- No lab test on file
- 1945–1950
- 4,000 built
It was ranked on an engine power figure whose source does not say gross or net. WhichTractor size, not the maker’s category
We looked and the record does not say what this machine is. How we decide what a machine is
BOLINDER-MUNKTELL BM-20 specs: hp, weight, years
BOLINDER W-5 two-cylinder diesel. The manufacturer claimed 40.5 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.
Engine power, claimed · gross or net not stated
40.5 hp
30.2 kW as stated by the source
No lab test on file
Claimed · standard not stated by the source
Source · Traktorenlexikon, “Bolinder-Munktell BM 20”, claimed
This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.
- Weight
- 5,842 lb
- Top speed
- 12.4 mph
BOLINDER-MUNKTELL BM-20 specs: key facts
The BOLINDER-MUNKTELL BM-20 was built from 1945 to 1950.
The BOLINDER-MUNKTELL BM-20 has a claimed engine power (gross or net not stated) of 30.2 kW (40.5 hp); it has no measured PTO figure.
The BOLINDER-MUNKTELL BM-20 is two-wheel drive (2WD).
The BOLINDER-MUNKTELL BM-20 has a BOLINDER W-5 engine, a 2-cylinder 5.31 L diesel unit.
The BOLINDER-MUNKTELL BM-20 weighs 2,650 kg (5,842 lb) unladen.
The BOLINDER-MUNKTELL BM-20 has a rear PTO running at 545 rpm.
Source · Traktorenlexikon, “Bolinder-Munktell BM 20”
How does the BM-20 compare with its class?
- Limitation:
Five forward gears is low for its class — 29% below the median of 7 across the 252 machines within 10% of its power that hold this figure.
- Strength:
A 75 L fuel tank is high for its class — 42% above the median of 52.7 L across the 228 machines within 10% of its power that hold this figure.
- Worth knowing:
An unladen mass of 2,650 kg is high for its class — 38% above the median of 1,920 kg across the 253 machines within 10% of its power that hold this figure.
Derived by WhichTractor from 253 comparable records. How we work this out
How much horsepower does a BM-20 have?
The only figure for the BM-20 is 40.5 hp (30.2 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.
Source · Traktorenlexikon, “Bolinder-Munktell BM 20”
What engine is in a BM-20?
A BM-20 has a BOLINDER W-5, a 2-cylinder 5.31 L diesel engine.
| Make & model | BOLINDER W-5 |
|---|---|
| Cylinders | 2, liquid-cooled |
| Displacement | 324.2 ci · 5.31 L |
| Electrical system | 24 V |
Source · Traktorenlexikon, “Bolinder-Munktell BM 20”
How much will a BM-20 lift?
Hydraulic and PTO specifications for the BM-20 are below.
| Rear PTO | 545 rpm |
|---|
Source · Traktorenlexikon, “Bolinder-Munktell BM 20”
What transmission does a BM-20 have?
Transmission specifications for the BM-20 are below.
| Top speed | 12.4 mph · 20 km/h |
|---|
Source · Traktorenlexikon, “Bolinder-Munktell BM 20”
How much does a BM-20 weigh?
A BM-20 weighs 5,842 lb (2,650 kg) unladen.
| Unladen weight | 5,842 lb · 2,650 kg |
|---|---|
| Wheelbase | 70.9 in · 1,800 mm |
| Length | 128.0 in · 3,250 mm |
| Width | 68.9 in · 1,750 mm |
| Height | 72.0 in · 1,830 mm |
| Front track | 52.4 in · 1,330 mm |
| Rear track | 55.1 in · 1,400 mm |
Source · Traktorenlexikon, “Bolinder-Munktell BM 20”
What oil does a BM-20 take, and how much?
A BM-20 engine takes 11.1 qt (10.5 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.
| System | Capacity |
|---|---|
| Engine oil | 11.1 qt · 10.5 LSource: Traktorenlexikon, “Bolinder-Munktell BM 20” · single source, not independently verified |
| Cooling system | 23.2 qt · 22.0 LSource: Traktorenlexikon, “Bolinder-Munktell BM 20” · single source, not independently verified |
Always confirm against the operator’s manual for your machine before service.
Which tractors compare with a BM-20?
Within 10% of its 40.5 hp of claimed engine power, the same type, and first built within 15 years of it.
- SOMECA SOM-3540.5 hp engine, claimed · 1960–1963Side by side with the BM-20 →
- David Brown 90040.1 hp engine, claimed · 1957–1958Side by side with the BM-20 →
- MASSEY-HARRIS 74441.4 hp engine, claimed · 1948–1953Side by side with the BM-20 →
- ZETOR 35 Super41.4 hp engine, claimed · 1955–1960Side by side with the BM-20 →
- BUKH 452 (Super)41.4 hp engine, claimed · 1960–1967Side by side with the BM-20 →
- VALMET 361D41.4 hp engine, claimed · 1960–1965Side by side with the BM-20 →
Common questions about the BOLINDER-MUNKTELL BM-20
Is a BM-20 two-wheel drive or four-wheel drive?
The BOLINDER-MUNKTELL BM-20 is two-wheel drive (2WD).
What PTO does a BM-20 have?
A BM-20 has a 545 rpm rear PTO.
Sources and how this page was built
Compiled from Traktorenlexikon, “Bolinder-Munktell BM 20”.
Sources
Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution
- Traktorenlexikon: Bolinder-Munktell BM 20 — CC BY-SA 4.0, WIKIBOOKS-TL-116141 · revision 1001563. Wikibooks contributors (Traktorenlexikon). Original document