9 material differences · fewer than 12
Tractor oneUTB U-640 (DTC)1982–1985No measured PTO figureTractor twoUTB U-643 DT1988–2004No measured PTO figure
Which should you choose?
Read our verdict on the U-640 (DTC) and the U-643 DT → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
9 material differences · 5 fields identical or within 5%, which is not counted as material
| Field | U-640 (DTC) | U-643 DT | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 63.2 hp | 63.2 hp | — |
| Engine declared | UTB D-121.050 | UTB D-121.050 | — |
| Displacement declared | 3.60 L | 3.60 L | — |
| Maximum torque declared | 158 lb·ft · 214 N·m | 158 lb·ft · 214 N·m | — |
| Transmission | |||
| Top speed declared | 14.9 mph · 24 km/h | 15.5 mph · 25 km/h | — |
| Clutch declared | — | Dry UTB double clutch | — |
| Hydraulics & hitch | |||
| Pump flow declared | 5.7 gpm · 21.6 L/min | 9.0 gpm · 34.0 L/min | +57% U-643 DT |
| Pressure declared | 2,973 psi · 205 bar | 2,031 psi · 140 bar | +46% U-640 (DTC) |
| Rear PTO speeds declared | 540 rpm | 540/1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,453 lb · 2,020 kg | 6,889 lb · 3,125 kg | +55% U-643 DT |
| Wheelbase declared | 83.1 in · 2,110 mm | 89.4 in · 2,270 mm | +8% U-643 DT |
| Length declared | 137.0 in · 3,480 mm | 148.4 in · 3,770 mm | +8% U-643 DT |
| Width declared | 70.1 in · 1,780 mm | 72.4–91.7 in · 1,839–2,329 mm | differs |
| Ground clearance declared | 18.5 in · 470 mm | 12.6 in · 320 mm | +47% U-640 (DTC) |
| Turning radius, braked declared | 11.5 ft · 3.50 m | — | — |
| Fuel tank declared | 57.1 qt · 54.0 L | 65.5 qt · 62.0 L | +15% U-643 DT |
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.
UTB U-640 (DTC) sources
- Source: Traktorenlexikon, “UTB U 640”
UTB U-643 DT sources
- Source: Traktorenlexikon, “UTB U 643 DT”
- Source: Traktorenlexikon, “UTB U 640”