UTB U-640 (DTC) or UTB U-643 DT?
Which should you choose?
The data can’t decide this. Power at the PTO shaft cannot be compared: the U-640 (DTC) has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the U-643 DT has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- The UTB U-643 DT suits loader and hydraulic implement work better on this data: 57% (12.4 L/min / 3.3 gpm) more hydraulic flow.
Generated by rule set compare@4 from the figures on the side-by-side table, allowed by route “the same stated configuration”. Measured figures are compared only with measured, claimed only with claimed, at the same test condition; differences within each figure’s tolerance are not called.
What decides it, question by question?
| Question | U-640 (DTC) | U-643 DT | Call |
|---|---|---|---|
| Which puts more power through the PTO shaft? | 47.1 kW (63.2 hp)Traktorenlexikon, “UTB U 640” | 47.1 kW (63.2 hp)Traktorenlexikon, “UTB U 643 DT” | Not comparableNot comparable on power at the PTO shaft: the U-640 (DTC) has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the U-643 DT has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft. |
| Which turns a litre of fuel into more work at the shaft? | — | — | No figureNo call on fuel efficiency at the shaft: no figure on record for the U-640 (DTC) and the U-643 DT. |
| Which pulls harder at the drawbar? | — | — | No figureNo call on drawbar power: no figure on record for the U-640 (DTC) and the U-643 DT. |
| Which pumps more oil for implements? | 21.6 L/min (5.7 gpm)Traktorenlexikon, “UTB U 640” | 34.0 L/min (9.0 gpm)Traktorenlexikon, “UTB U 643 DT” | AheadThe UTB U-643 DT has 57% more hydraulic flow (12.4 L/min / 3.3 gpm) than the UTB U-640 (DTC) (both pump flow, as stated by the source). |
| Which lifts more on the three-point hitch? | 1,570 kg (3,461 lb)Traktorenlexikon, “UTB U 640” | — | No figureNo call on three-point lift: no figure on record for the U-643 DT. |
| Which is heavier, for traction? | 2,020 kg (4,453 lb)Traktorenlexikon, “UTB U 640” | 3,125 kg (6,889 lb)Traktorenlexikon, “UTB U 643 DT” | Ahead (a fact, not an advantage)The UTB U-643 DT is 55% heavier (1,105 kg / 2,436 lb) than the UTB U-640 (DTC) (both unladen weight, as stated by the source). |
| Which may carry more ballast and load? | — | — | No figureNo call on maximum permissible mass: no figure on record for the U-640 (DTC) and the U-643 DT. |
| Which has the wider choice of gears? | 8 to 12Traktorenlexikon, “UTB U 640” | 12Traktorenlexikon, “UTB U 643 DT” | EvenEven on forward gears (both forward gears, as stated by the source): the figures vary by configuration and the ranges overlap. |
| Which offers a creeper range? | YesTraktorenlexikon, “UTB U 640” | YesTraktorenlexikon, “UTB U 643 DT” | EvenEven on a creeper range: every machine offers one. |
| Which is faster on the road? | 24 km/h (14.9 mph)Traktorenlexikon, “UTB U 640” | 25 km/h (15.5 mph)Traktorenlexikon, “UTB U 643 DT” | EvenEven on top speed (both top speed forward, as stated by the source): the difference is under the 10% threshold, too small to call. |
| Which offers more PTO speeds? | 540 rpmTraktorenlexikon, “UTB U 640” | 540/1000 rpmTraktorenlexikon, “UTB U 643 DT” | AheadThe UTB U-643 DT offers 1000 rpm at the PTO, which the UTB U-640 (DTC) does not (as stated by the sources). |
| Which PTO runs independently of the ground drive? | — | — | No figureNo call on PTO independence: not stated for the U-640 (DTC) and the U-643 DT. |
| Which drives on both axles? | Two-wheel or four-wheel driveTraktorenlexikon, “UTB U 640” | 4WDTraktorenlexikon, “UTB U 643 DT” | EvenEven on drive: every machine is available with four-wheel drive. |
| Which is newer, and what about parts? | 1982–1985 | 1988–2004 | Ahead (a fact, not an advantage)The UTB U-643 DT is newer: production began 6 years later. We hold no parts-availability data, so there is no call on parts. |
What does this mean in plain words?
- The UTB U-643 DT has 57% more hydraulic flow (12.4 L/min / 3.3 gpm) than the UTB U-640 (DTC) (both pump flow, as stated by the source).
- The UTB U-643 DT is 55% heavier (1,105 kg / 2,436 lb) than the UTB U-640 (DTC) (both unladen weight, as stated by the source).
- The UTB U-643 DT offers 1000 rpm at the PTO, which the UTB U-640 (DTC) does not (as stated by the sources).
- The UTB U-643 DT is newer: production began 6 years later. We hold no parts-availability data, so there is no call on parts.
- Even on forward gears (both forward gears, as stated by the source): the figures vary by configuration and the ranges overlap.
- Even on a creeper range: every machine offers one.
- Even on top speed (both top speed forward, as stated by the source): the difference is under the 10% threshold, too small to call.
- Even on drive: every machine is available with four-wheel drive.
- Not comparable on power at the PTO shaft: the U-640 (DTC) has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the U-643 DT has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- No figure on record for every machine, so no call on: fuel efficiency at the shaft, drawbar power, three-point lift, maximum permissible mass and PTO independence.
← Every figure for both machines, side by side, with sources