Bührer PF-21 Super (A) or International Harvester 674?
Which should you choose?
The figures split: the International Harvester 674 is ahead on hydraulic flow and PTO speeds; the Bührer PF-21 Super (A) is ahead on three-point lift.
- The International Harvester 674 suits PTO-driven implements (mowers, balers, pumps) better on this data: offers 1000 rpm.
Generated by rule set compare@4 from the figures on the side-by-side table, allowed by route “similar machines”. 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) | 674 | Call |
|---|---|---|---|
| Which puts more power through the PTO shaft? | 43.9 kW (58.9 hp)Traktorenlexikon, “Bührer PF 21 Super(A)” | 43.8 kW (58.8 hp)Traktorenlexikon, “IHC 674” | 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 674. |
| Which pulls harder at the drawbar? | — | — | No figureNo call on drawbar power: no figure on record for the PF-21 Super (A) and the 674. |
| Which pumps more oil for implements? | 19.5 L/min (5.2 gpm)Traktorenlexikon, “Bührer PF 21 Super(A)” | 42.1 L/min (11.1 gpm) to 47.7 L/min (12.6 gpm)Traktorenlexikon, “IHC 674” | AheadThe International Harvester 674 has 116% more hydraulic flow (22.6 L/min / 6.0 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)” | 1,910 kg (4,211 lb)Traktorenlexikon, “IHC 674” | AheadThe Bührer PF-21 Super (A) has 23% more lift (440 kg / 970 lb) than the International Harvester 674 (both lift at the hitch ends, as stated by the source). |
| Which is heavier, for traction? | 2,430 kg (5,357 lb)Traktorenlexikon, “Bührer PF 21 Super(A)” | 2,316 kg (5,106 lb)Traktorenlexikon, “IHC 674” | EvenEven on weight (both unladen weight, as stated by the source): the difference is under the 10% threshold, too small to call. |
| Which may carry more ballast and load? | — | — | No figureNo call on maximum permissible mass: no figure on record for the PF-21 Super (A) and the 674. |
| Which has the wider choice of gears? | 15Traktorenlexikon, “Bührer PF 21 Super(A)” | 8 to 16Traktorenlexikon, “IHC 674” | 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? | — | — | No figureNo call on a creeper range: not stated for the PF-21 Super (A) and the 674. |
| Which is faster on the road? | 25 km/h (15.5 mph)Traktorenlexikon, “Bührer PF 21 Super(A)” | 25 km/h (15.5 mph) to 30 km/h (18.6 mph)Traktorenlexikon, “IHC 674” | EvenEven on top speed (both top speed forward, as stated by the source): the figures vary by configuration and the ranges overlap. |
| Which offers more PTO speeds? | 540/770 rpmTraktorenlexikon, “Bührer PF 21 Super(A)” | 540/1000 rpmTraktorenlexikon, “IHC 674” | AheadThe International Harvester 674 offers 1000 rpm at the PTO, which the Bührer PF-21 Super (A) does not (as stated by the sources). |
| Which PTO runs independently of the ground drive? | independentTraktorenlexikon, “Bührer PF 21 Super(A)” | independentTraktorenlexikon, “IHC 674” | EvenEven on PTO independence: every PTO is independent. |
| Which drives on both axles? | 2WD / 4WDTraktorenlexikon, “Bührer PF 21 Super(A)” | Two-wheel or four-wheel driveTraktorenlexikon, “IHC 674” | EvenEven on drive: every machine is available with four-wheel drive. |
| Which is newer, and what about parts? | 1968–1974 | 1973–1975 | Ahead (a fact, not an advantage)The International Harvester 674 is newer: production began 5 years later. We hold no parts-availability data, so there is no call on parts. |
What does this mean in plain words?
- The International Harvester 674 has 116% more hydraulic flow (22.6 L/min / 6.0 gpm) than the Bührer PF-21 Super (A) (both pump flow, as stated by the source).
- The Bührer PF-21 Super (A) has 23% more lift (440 kg / 970 lb) than the International Harvester 674 (both lift at the hitch ends, as stated by the source).
- The International Harvester 674 offers 1000 rpm at the PTO, which the Bührer PF-21 Super (A) does not (as stated by the sources).
- The International Harvester 674 is newer: production began 5 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 weight (both unladen weight, as stated by the source): the difference is under the 10% threshold, too small to call.
- Even on forward gears (both forward gears, as stated by the source): the figures vary by configuration and the ranges overlap.
- Even on top speed (both top speed forward, as stated by the source): the figures vary by configuration and the ranges overlap.
- Even on PTO independence: every PTO is independent.
- 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, maximum permissible mass and a creeper range.
← Every figure for both machines, side by side, with sources