WhichTractor
  • Rigid chassis
  • WhichTractor size: Standard-size
  • No lab test on file
  • 1957–1959

It was ranked on an engine power figure whose source does not say gross or net. WhichTractor size, not the maker’s category

Derived by WhichTractor from a sourced three-point linkage. How we decide what a machine is

SOMECA SOM-40 specs: hp, weight, years

O.M.-FIAT COID-45 four-cylinder diesel. The manufacturer claimed 44.4 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.

Engine power, claimed · gross or net not stated

44.4 hp

33.1 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “Someca SOM 40”, 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
5,115 lb
3-point lift
2,425 lb
Hyd. flow
4.0 gpm
Top speed
13.0 mph

SOMECA SOM-40 specs: key facts

  • The SOMECA SOM-40 was built from 1957 to 1959.

  • The SOMECA SOM-40 has a claimed engine power (gross or net not stated) of 33.1 kW (44.4 hp); it has no measured PTO figure.

  • The SOMECA SOM-40 is two-wheel drive (2WD).

  • The SOMECA SOM-40 has a O.M.-FIAT COID-45 engine, a 4-cylinder 4.16 L diesel unit.

  • The SOMECA SOM-40 weighs 2,320 kg (5,115 lb) unladen.

  • The SOMECA SOM-40 has an independent rear PTO running at 540 rpm.

  • The three-point hitch of the SOMECA SOM-40 lifts 1,100 kg (2,425 lb) at the lower-link ends.

  • The hydraulic pump of the SOMECA SOM-40 delivers 15.0 L/min (4.0 gpm).

Source · Traktorenlexikon, “Someca SOM 40”

How does the SOM-40 compare with its class?

  • Limitation:

    A hydraulic pump flow of 15 L/min is low for its class — 36% below the median of 23.4 L/min across the 210 machines within 10% of its power that hold this figure.

Derived by WhichTractor from 272 comparable records. How we work this out

Illustration of the 1957–1959 SOMECA SOM-40, a 44 hp farm tractor, cab was optional — shown without it, a drawing generated from its specification record
Illustration — not a photograph · cab was optional — shown without it

How much horsepower does a SOM-40 have?

The only figure for the SOM-40 is 44.4 hp (33.1 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.

Engine, claimed (gross/net not stated)
44.4 hp

Source · Traktorenlexikon, “Someca SOM 40”

What engine is in a SOM-40?

A SOM-40 has an O.M.-FIAT COID-45, a 4-cylinder 4.16 L diesel engine.

Engine — SOM-40 engine specifications
Make & modelO.M.-FIAT COID-45
Cylinders4, liquid-cooled
Displacement253.6 ci · 4.16 L
Electrical system12 V

Source · Traktorenlexikon, “Someca SOM 40”

How much will a SOM-40 lift, and what is its hydraulic flow?

A SOM-40 lifts 2,425 lb (1,100 kg) at the lower-link ends of its Category 2 three-point hitch.

Hydraulics & PTO — SOM-40 hydraulics and PTO specifications
Pump flow4.0 gpm · 15.0 L/min
Hitch categoryCategory 2
Lift at ends2,425 lb · 1,100 kg
Rear PTOIndependent, engine-driven, 540 rpm

Source · Traktorenlexikon, “Someca SOM 40”

What transmission does a SOM-40 have?

Transmission specifications for the SOM-40 are below.

Transmission — SOM-40 transmission specifications
ClutchPedal operated two stage dry double clutch
BrakesPedal operated disc brake acting on differential shafts functioning as steering brake
SteeringMechanically operated worm steering
Top speed13.0 mph · 21 km/h

Source · Traktorenlexikon, “Someca SOM 40”

How much does a SOM-40 weigh?

A SOM-40 weighs 5,115 lb (2,320 kg) unladen.

Weights & dimensions — SOM-40 weights and dimensions
Unladen weight5,115 lb · 2,320 kg
Wheelbase79.9 in · 2,030 mm
Length132.5 in · 3,365 mm
Width68.7–95.1 in · 1,745–2,415 mm
Height72.0 in · 1,829 mm
Ground clearance14.3 in · 364 mm
Front track51.4–67.2 in · 1,306–1,706 mm
Rear track51.2–78.7 in · 1,300–2,000 mm
Turning radius, braked10.8 ft · 3.30 m

Source · Traktorenlexikon, “Someca SOM 40”

What oil does a SOM-40 take, and how much?

A SOM-40 engine takes 10.6 qt (10.0 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.

SOM-40 fluid capacities, grades and service intervals
SystemCapacity
Engine oil10.6 qt · 10.0 LSource: Traktorenlexikon, “Someca SOM 40” · single source, not independently verified
Transmission21.1 qt · 20.0 LSource: Traktorenlexikon, “Someca SOM 40” · single source, not independently verified
Hydraulic3.7 qt · 3.5 LSource: Traktorenlexikon, “Someca SOM 40” · single source, not independently verified
Cooling system22.2 qt · 21.0 LSource: Traktorenlexikon, “Someca SOM 40” · single source, not independently verified

Always confirm against the operator’s manual for your machine before service.

Which tractors compare with a SOM-40?

Within 10% of its 44.4 hp of claimed engine power, the same type, and first built within 15 years of it.

Common questions about the SOMECA SOM-40

Is a SOM-40 two-wheel drive or four-wheel drive?

The SOMECA SOM-40 is two-wheel drive (2WD).

What PTO does a SOM-40 have?

A SOM-40 has a independent 540 rpm rear PTO.

Sources and how this page was built

Compiled from Traktorenlexikon, “Someca SOM 40”.

Sources checked

14 SEP 2026

Spotted an error?

Sources

Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution

  1. Traktorenlexikon: Someca SOM 40 — CC BY-SA 4.0, WIKIBOOKS-TL-121063 · revision 1061769. Wikibooks contributors (Traktorenlexikon). Original document