- Vehicle type: unspecified
- Rigid chassis
- WhichTractor size: Utility
- No lab test on file
- 1948–1949
It was ranked on an engine power figure whose source does not say gross or net. WhichTractor size, not the maker’s category
We looked and the record does not say what this machine is. How we decide what a machine is
RÖHR R 28 specs: hp, weight, years
Güldner 2F two-cylinder diesel. The manufacturer claimed 27.6 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.
Engine power, claimed · gross or net not stated
27.6 hp
20.6 kW as stated by the source
No lab test on file
Claimed · standard not stated by the source
Source · Traktorenlexikon, “Röhr R 28”, claimed
This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.
- Weight
- 3,748 lb
- Top speed
- 12.4 mph
RÖHR R 28 specs: key facts
The RÖHR R 28 was built from 1948 to 1949.
The RÖHR R 28 has a claimed engine power (gross or net not stated) of 20.6 kW (27.6 hp); it has no measured PTO figure.
The RÖHR R 28 is two-wheel drive (2WD).
The RÖHR R 28 has a Güldner 2F engine, a 2-cylinder 2.60 L diesel unit.Source 1
The RÖHR R 28 weighs 1,700 kg (3,748 lb) unladen.
The RÖHR R 28 has a dependent rear PTO running at 540 rpm.
Source · Traktorenlexikon, “Röhr R 28”
How does the R 28 compare with its class?
- Strength:
A maximum engine torque of 150 N·m is high for its class — 34% above the median of 112 N·m across the 60 machines within 10% of its power that hold this figure.
- Limitation:
Four forward gears is low for its class — 33% below the median of 6 across the 117 machines within 10% of its power that hold this figure.
- Limitation:
A 30 L fuel tank is low for its class — 25% below the median of 40 L across the 99 machines within 10% of its power that hold this figure.
Derived by WhichTractor from 119 comparable records. How we work this out
How much horsepower does an R 28 have?
The only figure for the R 28 is 27.6 hp (20.6 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.
Source · Traktorenlexikon, “Röhr R 28”
What engine is in an R 28?
An R 28 has a Güldner 2F, a 2-cylinder 2.60 L diesel engine.
| Make & model | Güldner 2F |
|---|---|
| Cylinders | 2, liquid-cooledSource 2 |
| Displacement | 158.5 ci · 2.60 L |
| Max torque | 111 lb·ft · 150 N·mSource 2 |
| Electrical system | 6 VSource 2 |
Source · Traktorenlexikon, “Güldner AF 30”
How much will an R 28 lift?
Hydraulic and PTO specifications for the R 28 are below.
| Rear PTO | Dependent, transmission-driven, 540 rpm |
|---|
Source · Traktorenlexikon, “Röhr R 28”
What transmission does an R 28 have?
Transmission specifications for the R 28 are below.
| Clutch | Pedal-operated dry single-plate clutch |
|---|---|
| Steering | Mechanical ZF steering |
| Top speed | 12.4 mph · 20 km/h |
Source · Traktorenlexikon, “Röhr R 28”
How much does an R 28 weigh?
An R 28 weighs 3,748 lb (1,700 kg) unladen.
| Unladen weight | 3,748 lb · 1,700 kg |
|---|---|
| Maximum permissible mass | 4,189 lb · 1,900 kg |
| Wheelbase | 68.9 in · 1,750 mm |
| Length | 108.3 in · 2,750 mm |
| Width | 61.0 in · 1,550 mm |
| Height | 65.0 in · 1,650 mm |
| Ground clearance | 11.8 in · 300 mm |
| Front track | 49.2 in · 1,250 mm |
| Rear track | 50.0 in · 1,270 mm |
Source · Traktorenlexikon, “Röhr R 28”
What oil does an R 28 take, and how much?
An R 28 engine takes 9.5 qt (9.0 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.
| System | Capacity |
|---|---|
| Engine oil | 9.5 qt · 9.0 LSource: Traktorenlexikon, “Röhr R 28” · single source, not independently verified |
| Cooling system | 33.8 qt · 32.0 LSource: Traktorenlexikon, “Röhr R 28” · single source, not independently verified |
Always confirm against the operator’s manual for your machine before service.
Which tractors compare with an R 28?
Within 10% of its 27.6 hp of claimed engine power, the same type, and first built within 15 years of it.
- Hürlimann D-5027.6 hp engine, claimed · 1948–1952Side by side with the R 28 →
- BOLINDER-MUNKTELL BM-24/BM-2527.6 hp engine, claimed · 1952–1959Side by side with the R 28 →
- URSUS C-32827.6 hp engine, claimed · 1963–1968Side by side with the R 28 →
- Hermann Lanz D 28 (TD)27.5 hp engine, claimed · 1948–1952Side by side with the R 28 →
- Kramer K 2827.5 hp engine, claimed · 1947–1950Side by side with the R 28 →
- Hermann Lanz D 3027.5 hp engine, claimed · 1956–1960Side by side with the R 28 →
Common questions about the RÖHR R 28
Is an R 28 two-wheel drive or four-wheel drive?
The RÖHR R 28 is two-wheel drive (2WD).
What PTO does an R 28 have?
An R 28 has a dependent 540 rpm rear PTO.
Sources and how this page was built
Compiled from Traktorenlexikon, “Röhr R 28”; and Traktorenlexikon, “Güldner AF 30”.
Sources
Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution
- Traktorenlexikon: Güldner AF 30 — CC BY-SA 4.0, WIKIBOOKS-TL-43369 · revision 901960. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: Röhr R 28 — CC BY-SA 4.0, WIKIBOOKS-TL-119872 · revision 1042739. Wikibooks contributors (Traktorenlexikon). Original document