Bührer PF-21 Super (A) or Deutz (KHD) D 6806?
Which should you choose?
On performance, every comparable figure that differs favours the Deutz D 6806: hydraulic flow.
- The Deutz D 6806 suits loader and hydraulic implement work better on this data: 45% (8.8 L/min / 2.3 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 | PF-21 Super (A) | D 6806 | Call |
|---|---|---|---|
| Which puts more power through the PTO shaft? | 43.9 kW (58.9 hp)Traktorenlexikon, “Bührer PF 21 Super(A)” | 43.9 kW (58.9 hp)Traktorenlexikon, “Deutz D 6806” | EvenEven on power at the PTO shaft (both power at the PTO, claimed): the difference is under the 10% threshold for claimed figures, too small to call. |
| 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 PF-21 Super (A) and the D 6806. |
| Which pulls harder at the drawbar? | — | — | No figureNo call on drawbar power: no figure on record for the PF-21 Super (A) and the D 6806. |
| Which pumps more oil for implements? | 19.5 L/min (5.2 gpm)Traktorenlexikon, “Bührer PF 21 Super(A)” | 28.3 L/min (7.5 gpm)Traktorenlexikon, “Deutz D 6806” | AheadThe Deutz D 6806 has 45% more hydraulic flow (8.8 L/min / 2.3 gpm) than the Bührer PF-21 Super (A) (both pump flow, as stated by the source). |
| Which lifts more on the three-point hitch? | 2,350 kg (5,181 lb)Traktorenlexikon, “Bührer PF 21 Super(A)” | — | No figureNo call on three-point lift: no figure on record for the D 6806. |
| Which is heavier, for traction? | 2,430 kg (5,357 lb)Traktorenlexikon, “Bührer PF 21 Super(A)” | 2,760 kg (6,085 lb)Traktorenlexikon, “Deutz D 6806” | Ahead (a fact, not an advantage)The Deutz D 6806 is 14% heavier (330 kg / 728 lb) than the Bührer PF-21 Super (A) (both unladen weight, as stated by the source). |
| Which may carry more ballast and load? | — | 5,000 kg (11,023 lb)Traktorenlexikon, “Deutz D 6806” | No figureNo call on maximum permissible mass: no figure on record for the PF-21 Super (A). |
| Which has the wider choice of gears? | 15Traktorenlexikon, “Bührer PF 21 Super(A)” | 12Traktorenlexikon, “Deutz D 6806” | EvenEven on forward gears (both forward gears, as stated by the source): the difference is under the 25% threshold, too small to call. |
| Which offers a creeper range? | — | — | No figureNo call on a creeper range: not stated for the PF-21 Super (A) and the D 6806. |
| Which is faster on the road? | 25 km/h (15.5 mph)Traktorenlexikon, “Bührer PF 21 Super(A)” | 25 km/h (15.5 mph)Traktorenlexikon, “Deutz D 6806” | 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? | 540/770 rpmTraktorenlexikon, “Bührer PF 21 Super(A)” | 540 rpmTraktorenlexikon, “Deutz D 6806” | EvenEven on PTO speeds: the same speeds (540 rpm). |
| Which PTO runs independently of the ground drive? | independentTraktorenlexikon, “Bührer PF 21 Super(A)” | — | No figureNo call on PTO independence: not stated for the D 6806. |
| Which drives on both axles? | 2WD / 4WDTraktorenlexikon, “Bührer PF 21 Super(A)” | 2WD / 4WDTraktorenlexikon, “Deutz D 6806” | EvenEven on drive: every machine is available with four-wheel drive. |
| Which is newer, and what about parts? | 1968–1974 | 1974–1980 | Ahead (a fact, not an advantage)The Deutz D 6806 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 Deutz D 6806 has 45% more hydraulic flow (8.8 L/min / 2.3 gpm) than the Bührer PF-21 Super (A) (both pump flow, as stated by the source).
- The Deutz D 6806 is 14% heavier (330 kg / 728 lb) than the Bührer PF-21 Super (A) (both unladen weight, as stated by the source).
- The Deutz D 6806 is newer: production began 6 years later. We hold no parts-availability data, so there is no call on parts.
- Even on power at the PTO shaft (both power at the PTO, claimed): the difference is under the 10% threshold for claimed figures, too small to call.
- Even on forward gears (both forward gears, as stated by the source): the difference is under the 25% threshold, too small to call.
- 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 PTO speeds: the same speeds (540 rpm).
- Even on drive: every machine is available with four-wheel drive.
- No figure on record for every machine, so no call on: fuel efficiency at the shaft, drawbar power, three-point lift, maximum permissible mass, a creeper range and PTO independence.
← Every figure for both machines, side by side, with sources