Someca SOM-20 D
Built: 1956–1961 · Series: Other models
More machines from model year 1956
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Someca – other models: the French Fiat tractor subsidiary, DA and DR series plus the 400/500 range, 13 to 43 kW, two- to four-cylinder diesels from Saint-Dizier
Someca was Fiat's French tractor manufacturing arm, with a plant in Saint-Dizier in the Champagne region; from the 1960s the brand built Fiat tractors under licence and under its own name for the French market and for export. The models gathered here range from the early DA and DR types through the multi-purpose SOM-20 D to the 400 and 500 range (474, 570) with the suffixes TD for turbo-diesel, V for a higher-output version and E for an equipment level. In the 1980s Someca was absorbed into Fiatagri, which later merged with Ford New Holland to form New Holland.
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The register lists here 7 versions with 13.2 to 42.7 kW (18 to 58 hp) from two- to four-cylinders of 1,135 to 3,770 cm³, torque from 58.8 to 186 Nm at 1,500 to 2,650 rpm, unladen weights from 850 to 2,290 kg, lengths from 2,595 to 3,310 mm and widths from 1,080 to 1,910 mm.
Over decades Someca shaped the mechanisation of smaller and medium-sized farms in France, competing directly with Renault and the French importers of Massey Ferguson and John Deere; the close kinship with Fiat still shows today in shared engine and gearbox components.
On used examples, what counts is the condition of the engine and injection pump, the tightness of the hydraulics, wear on clutch and gearbox, and rust on the bodywork; because Someca was absorbed into Fiat and later New Holland, many mechanical parts can still be found through Fiat's parts base, while brand-specific fittings are now only available second-hand.
Sources: SpecCodex register, model data: Someca (weitere Modelle)
Technical data
Engine
| Fuel | Diesel/Benzincorrect |
|---|---|
| Power | 18 hp (13.2 kW)correct |
| Rated speed | 2,200 rpmcorrect |
| Torque | 58.8 Nmcorrect |
| Speed at max. torque | 1,500 rpmcorrect |
| Cylinders | 2correct |
| Displacement | 1,135 cm³correct |
| Bore | 85 mmcorrect |
| Stroke | 100 mmcorrect |
| Compression ratio | 21.5correct |
| Injection pressure | 118 barcorrect |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 2,595 mmcorrect |
|---|---|
| Width | 1,210 mmcorrect |
| Height | 1,530 mmcorrect |
| Wheelbase | 1,700 mmcorrect |
| Ground clearance | 500 mmcorrect |
| Unladen weight | 850 kgcorrect |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | 6 V/2 Rcorrect |
| Forward gears | 6correct |
| Reverse gears | 2correct |
| Front tyres | 4.00-15 ASFcorrect |
| Rear tyres | 9-24 AScorrect |
| Top speed | 21 km/hcorrect |
Working data
| Fuel tank capacity | 24 lcorrect |
|---|
Origin and approval
| Construction | frame constructioncorrect |
|---|
Other data
| Linkage category | Cat Icorrect |
|---|
Where this model stands
Power-to-weight ratio: 15.5 kW/t (13 kW / 0.8 t)
Power class: Compact (< 40 hp)
Stronger than 6% of the tractors in the register — out of 15,663 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Someca SOM-20 D have?
The Someca SOM-20 D delivers 18 hp.
How much does the Someca SOM-20 D weigh?
The unladen weight is 850 kg.
What engine does the Someca SOM-20 D have?
2 cylinders, 1,135 cm³ displacement, Diesel/Benzin.
How fast does the Someca SOM-20 D go?
Top speed is 21 km/h.
What are the dimensions of the Someca SOM-20 D?
2,595 mm × 1,210 mm × 1,530 mm.
When was the Someca SOM-20 D built?
Production years: 1956–1961.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 30 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
Sources: [1]
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.