BOLINDER-MUNKTELL BM-31 vs J.I. Case Modell-D

9 material differences · fewer than 12

Tractor one

BOLINDER-MUNKTELL BM-31

1949–1957

No measured PTO figure

Tractor two

J.I. Case Modell-D

1939–1953

No measured PTO figure

Which should you choose?

We will not advise between these two machines, because their unladen weight differs by more than 25% (38%). The figures below are side by side so you can judge them yourself; each says whether it was measured, claimed or declared by its source.

Field by field

9 material differences · 1 fields identical or within 5%, which is not counted as material

BOLINDER-MUNKTELL BM-31 and J.I. Case Modell-D, field by field
FieldBM-31Modell-DGap
Engine
Engine power, claimed claimed34 hp31.6 hp+6% BM-31
Engine declaredAB-VOLVO D 4 F
Displacement declared3.46 L
Maximum torque declared134 lb·ft · 182 N·m
Transmission
Top speed declared18.6 mph · 30 km/h11.0 mph · 17.7 km/h+69% BM-31
Clutch declaredpedal-operated dry single-disc clutchHand lever operated double disc clutchdiffers
Hydraulics & hitch
Pump flow declared6.3 gpm · 23.8 L/min
Pressure declared1,276 psi · 88 bar
Rear PTO speeds declared540 rpm540 rpm
Weight & dimensions
Unladen weight declared5,060 lb · 2,295 kg7,004 lb · 3,177 kg+38% Modell-D
Wheelbase declared77.2 in · 1,960 mm66.4 in · 1,686 mm+16% BM-31
Length declared122.6 in · 3,115 mm116.0 in · 2,946 mm+6% BM-31
Width declared72.4 in · 1,839 mm61.5 in · 1,562 mm+18% BM-31
Height declared71.7 in · 1,820 mm49.5 in · 1,257 mm+45% BM-31
Ground clearance declared16.5 in · 420 mm14.0 in · 356 mm+18% BM-31
Fuel tank declared63.4 qt · 60.0 L67.9 qt · 64.3 L+7% Modell-D

BOLINDER-MUNKTELL BM-31 sources

Source
  • Source: Traktorenlexikon, “Bolinder-Munktell BM 31”

J.I. Case Modell-D sources

Source
  • Source: Traktorenlexikon, “Case D”