BOLINDER-MUNKTELL BM-31 vs SOMECA SOM-30 B

13 material differences

Tractor one

1949–1957

No measured PTO figure

Tractor two

1960–1963

No measured PTO figure

Which should you choose?

Read our verdict on the BM-31 and the SOM-30 B → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

13 material differences · 3 fields identical or within 5%, which is not counted as material

BOLINDER-MUNKTELL BM-31 and SOMECA SOM-30 B, field by field
Field	BM-31	SOM-30 B	Gap
Engine
Engine power, claimed claimed	34 hp	34.5 hp	—
Engine declared	AB-VOLVO D 4 F	O.M.-FIAT 605 D 015	differs
Displacement declared	3.46 L	1.90 L	+82% BM-31
Maximum torque declared	134 lb·ft · 182 N·m	74 lb·ft · 101 N·m	+80% BM-31
Transmission
Top speed declared	18.6 mph · 30 km/h	12.4 mph · 20 km/h	+50% BM-31
Clutch declared	pedal-operated dry single-disc clutch	Pedal-operated two-stage dry double clutch	differs
Hydraulics & hitch
Pump flow declared	6.3 gpm · 23.8 L/min	4.4 gpm · 16.5 L/min	+44% BM-31
Pressure declared	1,276 psi · 88 bar	2,843 psi · 196 bar	+123% SOM-30 B
Three-point lift at ends declared	—	1,984 lb · 900 kg	—
Rear PTO speeds declared	540 rpm	540 rpm	—
Weight & dimensions
Unladen weight declared	5,060 lb · 2,295 kg	3,770 lb · 1,710 kg	+34% BM-31
Wheelbase declared	77.2 in · 1,960 mm	69.9 in · 1,776 mm	+10% BM-31
Length declared	122.6 in · 3,115 mm	113.4 in · 2,880 mm	+8% BM-31
Width declared	72.4 in · 1,839 mm	59.1 in · 1,500 mm	+23% BM-31
Height declared	71.7 in · 1,820 mm	57.1 in · 1,450 mm	+26% BM-31
Ground clearance declared	16.5 in · 420 mm	15.7 in · 400 mm	—
Turning radius, braked declared	—	10.8 ft · 3.30 m	—
Fuel tank declared	63.4 qt · 60.0 L	41.2 qt · 39.0 L	+54% BM-31

Source

Source