- Rigid chassis
- WhichTractor size: Standard-size
- Not independently tested
- 1969–1975
- 367 built
WhichTractor size, not the maker’s category
Derived by WhichTractor from a sourced three-point linkage. How we decide what a machine is
Bührer RP-21 Super (A) Full specifications
Perkins A 4.248 four-cylinder diesel. The manufacturer claimed 71 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.
Engine power, claimed · gross or net not stated
71 hp
53 kW as stated by the source
Not independently tested
Claimed · standard not stated by the source
Source · Traktorenlexikon, “Bührer RP 21 Super (A)”, claimed
- Weight
- 5,807 lb
- 3-point lift
- 4,850 lb
- Hyd. flow
- 5.2 gpm
- Top speed
- 15.5 mph
Bührer RP-21 Super (A) specs: key facts
The Bührer RP-21 Super (A) was built from 1969 to 1975.
The Bührer RP-21 Super (A) has a claimed engine power (gross or net not stated) of 53 kW (71 hp); it has no measured PTO figure.
The Bührer RP-21 Super (A) was built in two-wheel drive (2WD) and four-wheel drive (4WD) versions, depending on configuration.
The Bührer RP-21 Super (A) has a Perkins A 4.248 engine, a 4-cylinder 4.07 L diesel unit.Source 2
The Bührer RP-21 Super (A) weighs 2,634 kg (5,807 lb) unladen.
The Bührer RP-21 Super (A) has an independent rear PTO running at 540 rpm.
The three-point hitch of the Bührer RP-21 Super (A) lifts 2,200 kg (4,850 lb) at the lower-link ends.
The hydraulic pump of the Bührer RP-21 Super (A) delivers 19.5 L/min (5.2 gpm).
Source · Traktorenlexikon, “Bührer RP 21 Super (A)”
How much horsepower does a RP-21 Super (A) have?
The only figure for the RP-21 Super (A) is 71 hp (53 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.
Source · Traktorenlexikon, “Bührer RP 21 Super (A)”
What engine is in a RP-21 Super (A)?
A RP-21 Super (A) has a Perkins A 4.248, a 4-cylinder 4.07 L diesel engine.
| Make & model | Perkins A 4.248Source 2 |
|---|---|
| Cylinders | 4, liquid-cooledSource 2 |
| Displacement | 248.2 ci · 4.07 LSource 2 |
| Max torque | 212 lb·ft · 287 N·m @ 1,300 rpm |
| Electrical system | 12 V |
Source · Traktorenlexikon, “Bührer RP 21 Super (A)”
How much will a RP-21 Super (A) lift, and what is its hydraulic flow?
A RP-21 Super (A) lifts 4,850 lb (2,200 kg) at the lower-link ends.
| Pump flow | 5.2 gpm · 19.5 L/min |
|---|---|
| Pressure | 2,845 psi · 196 bar |
| Lift at ends | 4,850 lb · 2,200 kg |
| Rear PTO | Independent, engine-driven, 540 rpm @ 1,900 engine rpmEngages under loadGround-speed PTO available |
| PTO shaft | 1 3/8"- 6 splines |
Source · Traktorenlexikon, “Bührer RP 21 Super (A)”
What transmission does a RP-21 Super (A) have?
Transmission specifications for the RP-21 Super (A) are below.
| Brakes | pedal-operated internal expanding shoe brake acting on the pinion shaft |
|---|---|
| Steering | mechanically operated spindle steering |
| Top speed | 15.5 mph · 25 km/h |
Source · Traktorenlexikon, “Bührer RP 21 Super (A)”
How much does a RP-21 Super (A) weigh?
A RP-21 Super (A) weighs 5,807 lb (2,634 kg) unladen.
| Unladen weight | 5,807 lb · 2,634 kgtwo-wheel-drive version |
|---|---|
| Wheelbase | 84.5 in · 2,147 mmtwo-wheel-drive version |
| Length | 132.3 in · 3,360 mm |
| Width | 72.8 in · 1,850 mm |
| Height | 67.7 in · 1,720 mm |
| Ground clearance | 16.1 in · 410 mm |
| Front track | 61.4–64.3 in · 1,560–1,633 mmtwo-wheel-drive version |
| Rear track | 59.1 in · 1,500 mm |
| Turning radius, braked | 10.6 ft · 3.23 m |
Source · Traktorenlexikon, “Bührer RP 21 Super (A)”
Which tractors compare with a RP-21 Super (A)?
Within 10% of its 63.3 hp at the PTO (claimed), the same type, and first built within 15 years of it.
- Fiat 766 (DT)63.3 hp PTO, claimed · 1984–1986Side by side with the RP-21 Super (A) →
- J.I. Case 83163.4 hp PTO, claimed · 1960–1969Side by side with the RP-21 Super (A) →
- Fiat 70-90 (DT)63.2 hp PTO, claimed · 1984–1992Side by side with the RP-21 Super (A) →
- Renault 75-12 TS63.6 hp PTO, claimed · 1982–1983Side by side with the RP-21 Super (A) →
- Renault 74-14 RS63.6 hp PTO, claimed · 1984–1987Side by side with the RP-21 Super (A) →
- Massey Ferguson MF 590 (A)63.6 hp PTO, claimed · 1976–1982Side by side with the RP-21 Super (A) →
Everything else people ask
Is a RP-21 Super (A) two-wheel drive or four-wheel drive?
The Bührer RP-21 Super (A) was built in two-wheel drive (2WD) and four-wheel drive (4WD) versions, depending on configuration.
What PTO does a RP-21 Super (A) have?
A RP-21 Super (A) has a independent 540 rpm rear PTO on a 1 3/8"- 6 splines shaft.
Where this page comes from
Compiled from Traktorenlexikon, “Bührer RP 21 Super (A)”; and Traktorenlexikon, “Massey Ferguson MF 178”.
Sources
Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution
- Traktorenlexikon: Bührer RP 21 Super (A) — CC BY-SA 4.0, WIKIBOOKS-TL-119785 · revision 1042467. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Massey Ferguson MF 178 — CC BY-SA 4.0, WIKIBOOKS-TL-76619 · revision 1069046. Wikibooks contributors (Traktorenlexikon). Original document