Someca 550 (DT)
Built: 1968–1971 · Series: GOLD-RIBBON SERIE
More machines from model year 1968
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Someca Gold Ribbon: the Fiat range built for export, from the Someca 250 (DT) to the 1300 SUPER (DT), 18.4 to 106.6 kW, two- to six-cylinder engines with water cooling
After 1965, Someca built only Fiat designs under licence. The "Gold Ribbon" range, created for export markets, particularly Britain, bundled these Fiat-based models of the late 1960s and 1970s under Someca's own name and trim.
Read on 4 more paragraphs
The register lists 36 live models, from the Someca 250 (DT) to the 1300 SUPER (DT), built between 1968 and around 1983. Output ranges from 18.4 to 106.6 kW, weight from 1,070 to 5,650 kg, displacement from 1,559 to 7,412 cm3 across two-, three-, four- and six-cylinder engines.
The Gold Ribbon range thus covers practically the entire Fiat-Someca power spectrum of those years, from a compact two-cylinder up to the large six-cylinder 1300 model. Technically, these tractors largely match the equivalent ranges sold in parallel under the Fiat name.
In 1983 Someca was fully absorbed into the Fiatagri division, which became Fiat New Holland in 1993 and later CNH Global — an endpoint that closes out the Gold Ribbon era.
The huge power spread from 18.4 to 106.6 kW means several categories of the ISO 730 three-point linkage occur within the Gold Ribbon range: the small two-cylinder models mostly Category 0 or I, the large six-cylinders already Category II. On a specific example, the actual hitch category should therefore be checked before buying new implements, rather than relying on the model name alone.
Sources: SpecCodex register, model data: Someca Gold Ribbon
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 52 hp (38.2 kW)correct |
| Rated speed | 2,400 rpmcorrect |
| Torque | 186 Nmcorrect |
| Speed at max. torque | 1,200 rpmcorrect |
| Cylinders | 4correct |
| Displacement | 3,120 cm³correct |
| Bore | 95 mmcorrect |
| Stroke | 110 mmcorrect |
| Compression ratio | 17correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 3,430 mmcorrect |
|---|---|
| Width | 1,690 mmcorrect |
| Height | 1,815 mmcorrect |
| Wheelbase | 2,070 mmcorrect |
| Ground clearance | 420 mmcorrect |
| Unladen weight | 2,060 kgcorrect |
Drivetrain and chassis
| Drive | rear- or four-wheel drivecorrect |
|---|---|
| Gearbox | 8 V/2 R or 12 V/3 Rcorrect |
| Front tyres | 6.00-19 ASF (DT: 8.00-20 AS)correct |
| Rear tyres | 14-28 AScorrect |
| Top speed | 24 km/hcorrect |
Origin and approval
| Construction | unit construction (no separate frame)correct |
|---|
Where this model stands
Power-to-weight ratio: 18.5 kW/t (38 kW / 2.1 t)
Power class: Universal (40–100 hp)
Stronger than 36% 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 550 (DT) have?
The Someca 550 (DT) delivers 52 hp.
How much does the Someca 550 (DT) weigh?
The unladen weight is 2,060 kg.
What engine does the Someca 550 (DT) have?
4 cylinders, 3,120 cm³ displacement, Diesel.
How fast does the Someca 550 (DT) go?
Top speed is 24 km/h.
What are the dimensions of the Someca 550 (DT)?
3,430 mm × 1,690 mm × 1,815 mm.
When was the Someca 550 (DT) built?
Production years: 1968–1971.
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 24 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
1000 (TD)
1000 SUPER (TD)
1300 (TD)
1300 SUPER (DT)
250 (DT)
300 (TD)
350 (TD)
350 V
400 (DT)
400 V/E
420 (TD)
440 (TD)
Sources: Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · How we check the data
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
