SOMECA Som 55
The SOMECA Som 55 is a tractor produced by Someca. It is equipped with a 253.6 ci 4.2 L engine. The listed engine power is Diesel (listed): 55 hp / 41.0 kW. Transmission: Amplicouple. Operating weight: 5776 lbs 2619 kg.
Engine Power
Diesel (listed): 55 hp / 41.0 kW
Fuel & Capacities
23.3 gal
88.2 L
Transmission
Amplicouple
Operating Weight
5776 lbs
2619 kg
Overview
 | 1961 - 1963 |
|---|
Production | |
|---|---|
Manufacturer | SOMECA |
Built in France | |
Variants | |
|---|---|
513R | similar Fiat model |
SOMECA Som 55 Engine | |
|---|---|
Fiat 4.2L 4-cyl diesel | |
Fuel tank | 23.3 gal
88.2 L |
Engine details ...  | |
SOMECA Som 55 Transmission | |
|---|---|
14-speed | |
Transmission details ...  |
SOMECA Som 55 Power | |
|---|---|
Engine | 55 hp
41.0 kW |
Mechanical | |
|---|---|
Two-wheel drive | |
Disc brakes | |
Open operator station. |
Hydraulics | |
|---|---|
Pump flow | 5.7 gpm
21.6 lpm |
Tractor hitch | |
|---|---|
Rear Type | II |
Control | position and draft control |
Rear lift | 2646 lbs
1200 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent |
Rear PTO Type | 540 (1.375) |
Dimensions & Tires | |
|---|---|
Wheelbase | 79.9 inches
202 cm |
Weight | 5776 lbs
2619 kg |
Front tire | 6.50-20 |
Rear tire | 14-30 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery volts | 12 |
References | |
|---|---|
 | |
SOM 55 Amplicouple published in 1962, by SOMECA | |
Super SOM 55 Amplicouple published in 1963, by SOMECA | |
Operator's Manual SOM 55 (10.404) published in 1961 |
Engine
Engine Detail — 253.6 ci / 4.2 L Diesel
Manufacturer | Fiat CO1 D/55 |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 253.6 ci
4.2 L |
Bore/Stroke | 4.13x4.72 inches
105 x 120 mm |
Power | 55 hp
41.0 kW |
Compression | 15:1 |
Rated RPM | 1750 |
Firing order | 1-3-4-2 |
Starter | electric |
Starter volts | 12 |
Transmission
Transmission — Amplicouple
Transmission | Amplicouple |
Gears | 14 forward and 4 reverse |
Three gears, plus reverse, in two ranges with additional seventh gear available in both ranges. Amplicouple provides an additional low range for each gear. | |
With 14-30 rear tires. | |
 | |
Dimensions
SOMECA Som 55 Tires | |
|---|---|
Ag front | 6.50-20 |
Ag rear | 14-30 |
Ag rear | 12-38 |
Dimensions | |
|---|---|
Wheelbase | 79.9 inches
202 cm |
Length | 140.9 inches
357 cm |
Width | 68.9 inches
175 cm |
Height (steering wheel) | 72.5 inches
184 cm |
Height (hood) | 61 inches
154 cm |
Weight | 5776 lbs
2619 kg |
Front tread | 51.2 to 66.9 inches
130 to 169 cm |
Rear tread | 51.2 to 78.7 inches
130 to 199 cm |
Photos
SOMECA Som 55
Recommended Implements & Sizing Guide
Engineering recommendations for Someca Som 55 based on its 55 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 3 to 4 Bottom (16")3 - 4 铧 (40 cm) | Heavy Duty | Suitable for medium loam and stubble turnover. |
Rotary Cutter / MowerMowing & Clearing | 6 ft (72 in)1.8 m | Medium Duty | Medium pasture clearing; rear slip-clutch recommended. |
Rotary TillerSeedbed Prep | 66 to 72 in165 - 180 cm | Medium Duty | Standard utility tiller; slip clutch protection required. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | Small Square Baler (14x18")小方捆打捆机 (36x46 cm) | Medium Duty | Classic 2-string baler for horse and small livestock hay. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Someca Som 55.
Estimated Continuous Field Runtime: 8.1 hrs
Approximately 8.1 hours of continuous field operation at ~75% rated power on a full tank (23.3 gal / 88.2 L).
Estimated 75% Load Fuel Burn~2.9 gal/hr (10.8 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Someca Som 55 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Someca Som 55.
Converted Equivalents:
Horsepower (HP)55 hp
Kilowatts (kW)41 kW
Metric Horsepower (PS / CV)55.8 PS
Direct Competitor Comparison
Compare SOMECA Som 55 against same-era industry alternatives in the same horsepower class.
Current Model
Someca
SOMECA Som 55
Engine Power:Diesel (listed): 55 hp / 41.0 kW
★ Baseline Reference
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