7 material differences · fewer than 12
Tractor oneHermann Lanz D 301956–1960No measured PTO figureTractor twoRÖHR R 281948–1949No measured PTO figure
Which should you choose?
Read our verdict on the D 30 and the R 28 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
7 material differences · 4 fields identical or within 5%, which is not counted as material
| Field | D 30 | R 28 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 27.5 hp | 27.6 hp | — |
| Engine declared | Hela AZ 1 | Güldner 2F | differs |
| Displacement declared | — | 2.60 L | — |
| Maximum torque declared | — | 111 lb·ft · 150 N·m | — |
| Transmission | |||
| Top speed declared | 12.3 mph · 19.8 km/h | 12.4 mph · 20 km/h | — |
| Clutch declared | single-plate dry clutch | Pedal-operated dry single-plate clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 9.0 gpm · 34.0 L/min | — | — |
| Rear PTO speeds declared | 572 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 3,671 lb · 1,665 kg | 3,748 lb · 1,700 kg | — |
| Maximum permissible mass declared | — | 4,189 lb · 1,900 kg | — |
| Wheelbase declared | 74.8 in · 1,900 mm | 68.9 in · 1,750 mm | +9% D 30 |
| Length declared | 122.0 in · 3,100 mm | 108.3 in · 2,750 mm | +13% D 30 |
| Width declared | 61.0 in · 1,550 mm | 61.0 in · 1,550 mm | — |
| Ground clearance declared | 12.6 in · 320 mm | 11.8 in · 300 mm | +7% D 30 |
| Turning radius, braked declared | 9.8 ft · 3.00 m | — | — |
| Fuel tank declared | 52.8 qt · 50 L | 31.7 qt · 30.0 L | +67% D 30 |
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.
Hermann Lanz D 30 sources
Source
- Source: Traktorenlexikon, “HELA D30”
RÖHR R 28 sources
Source
- Source: Traktorenlexikon, “Röhr R 28”
- Source: Traktorenlexikon, “Güldner AF 30”