10 material differences · fewer than 12
Tractor oneBührer PF-21 Super (A)1968–1974No measured PTO figureTractor twoDeutz (KHD) D 68061974–1980No measured PTO figure
Which should you choose?
Read our verdict on the PF-21 Super (A) and the D 6806 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
10 material differences · 4 fields identical or within 5%, which is not counted as material
| Field | PF-21 Super (A) | D 6806 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 66.1 hp | 66 hp | — |
| Engine declared | FORD (GB) 2.514 E | KHD F4L 912 | differs |
| Displacement declared | 4.18 L | 3.77 L | +11% PF-21 Super (A) |
| Maximum torque declared | 183 lb·ft · 248 N·m | 177 lb·ft · 240 N·m | — |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 15.5 mph · 25 km/h | — |
| Clutch declared | Pedal-operated dry Buhrer double disc clutch between gearbox and group transmission | Independent dry Fichtel & Sachs double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 5.2 gpm · 19.5 L/min | 7.5 gpm · 28.3 L/min | +45% D 6806 |
| Pressure declared | — | 2,901 psi · 200 bar | — |
| Rear PTO speeds declared | 540/770 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 5,357 lb · 2,430 kg | 6,085 lb · 2,760 kg | +14% D 6806 |
| Maximum permissible mass declared | — | 11,023 lb · 5,000 kg | — |
| Wheelbase declared | 84.3 in · 2,140 mm | 84.6 in · 2,150 mm | — |
| Length declared | 129.5 in · 3,290 mm | 146.1 in · 3,710 mm | +13% D 6806 |
| Width declared | 69.3 in · 1,760 mm | 76.4 in · 1,940 mm | +10% D 6806 |
| Ground clearance declared | 15.0 in · 380 mm | 19.7 in · 500 mm | +32% D 6806 |
| Turning radius, braked declared | 10.9 ft · 3.33 m | 11.7 ft · 3.56 m | +7% D 6806 |
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.
Bührer PF-21 Super (A) sources
- Source: Traktorenlexikon, “Bührer PF 21 Super(A)”
Deutz (KHD) D 6806 sources
- Source: Traktorenlexikon, “Deutz D 6806”
- Source: Traktorenlexikon, “Deutz D 6006”