9 material differences · fewer than 12
Tractor oneHermann Lanz D 648 Allrad1973–1978No measured PTO figureTractor twoInternational Harvester 5231965–1972No measured PTO figure
Which should you choose?
We will not advise between these two machines, because the drive differs (4WD; Two-wheel or four-wheel drive); they were not built in overlapping years (1973–1978; 1965–1972). The figures below are side by side so you can judge them yourself; each says whether it was measured, claimed or declared by its source.
Field by field
9 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | D 648 Allrad | 523 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 47.1 hp | 47.1 hp | — |
| Engine declared | MWM D 225-3 ( 10/1973 bis 12/1974 ) | IHC D-179 | differs |
| Displacement declared | — | 2.93 L | — |
| Maximum torque declared | — | 131 lb·ft · 177 N·m | — |
| Transmission | |||
| Top speed declared | 17.6 mph · 28.4 km/h | 12.4–18.6 mph · 20–30 km/h | differs |
| Clutch declared | Maintenance-free dry single-plate clutch | Pedal-operated dry single-disc clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | — | 7.5 gpm · 28.5 L/min | — |
| Pressure declared | — | 3,556 psi · 245 bar | — |
| Rear PTO speeds declared | 595/980 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 5,291 lb · 2,400 kg | 5,379–6,294 lb · 2,440–2,855 kg | differs |
| Maximum permissible mass declared | 9,921 lb · 4,500 kg | — | — |
| Wheelbase declared | 84.3 in · 2,140 mm | 78.7 in · 2,000 mm | +7% D 648 Allrad |
| Length declared | 141.7 in · 3,600 mm | 119.5–128.7 in · 3,035–3,268 mm | differs |
| Width declared | 66.9 in · 1,700 mm | 71.5 in · 1,815 mm | +7% 523 |
| Ground clearance declared | 14.6 in · 370 mm | 15.0 in · 380 mm | — |
| Turning radius, braked declared | 14.3 ft · 4.35 m | 12.0 ft · 3.65 m | +19% D 648 Allrad |
| Fuel tank declared | 74.0 qt · 70 L | 74.0 qt · 70 L | — |
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 648 Allrad sources
- Source: Traktorenlexikon, “HELA D648A”
International Harvester 523 sources
- Source: Traktorenlexikon, “IHC 523”
- Source: Traktorenlexikon, “IHC 553”
- Source: Traktorenlexikon, “McCormick 523”