5 material differences · fewer than 12
Tractor oneFord 6401954–1957No measured PTO figureTractor twoSOMECA 3151965–1968No measured PTO figure
Which should you choose?
Read our verdict on the 640 and the 315 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
5 material differences · 6 fields identical or within 5%, which is not counted as material
| Field | 640 | 315 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 31.9 hp | 32.6 hp | — |
| Engine declared | — | O.M.-FIAT 605 D 015 | — |
| Displacement declared | — | 1.90 L | — |
| Maximum torque declared | — | 80 lb·ft · 108 N·m | — |
| Transmission | |||
| Top speed declared | 12.4 mph · 20 km/h | 14.9 mph · 24 km/h | +20% 315 |
| Clutch declared | — | Pedal operated dry double clutch | — |
| Hydraulics & hitch | |||
| Pump flow declared | 2.7–6.0 gpm · 10.2–22.7 L/min | 4.4 gpm · 16.5 L/min | differs |
| Pressure declared | — | 2,843 psi · 196 bar | — |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 3,018 lb · 1,369 kg | 3,395 lb · 1,540 kg | +12% 315 |
| Wheelbase declared | 74.5 in · 1,892 mm | 75.8 in · 1,925 mm | — |
| Length declared | 120.8 in · 3,069 mm | 118.7 in · 3,015 mm | — |
| Width declared | 63.9–87.5 in · 1,623–2,223 mm | 64.0–88.6 in · 1,625–2,250 mm | — |
| Ground clearance declared | 21.0 in · 533 mm | 15.4 in · 390 mm | +37% 640 |
| Turning radius, braked declared | 18.0 ft · 5.49 m | 11.0 ft · 3.35 m | +64% 640 |
| Fuel tank declared | 52.8 qt · 50.0 L | 51.8 qt · 49.0 L | — |
Height is not in this table. It is not one measurement: the sources measure it to different points — over the cab on some machines, over the steering wheel or the exhaust on others — and the same tractor measured two ways can differ by most of a metre. It appears here only when both machines' figures carry the point they were measured to and it is the same point, which is not the case for these two. Each machine's own page prints its height as its source gives it.
Ford 640 sources
Source
- Source: Traktorenlexikon, “Ford 600”
SOMECA 315 sources
Source
- Source: Traktorenlexikon, “Someca 315”
- Source: Traktorenlexikon, “Someca SOM 30 B”