9 material differences · fewer than 12
Tractor oneDavid Brown 950 (Implematic)1958–1962No measured PTO figureTractor twoJ.I. Case 5311960–1969No measured PTO figure
Which should you choose?
Read our verdict on the 950 (Implematic) and the 531 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
9 material differences · 1 fields identical or within 5%, which is not counted as material
| Field | 950 (Implematic) | 531 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 42.5 hp | 39.8 hp | +7% 950 (Implematic) |
| Engine declared | DAVID BROWN AK 4/40 T or AG 4/40 T | — | — |
| Displacement declared | 2.71 L | — | — |
| Transmission | |||
| Top speed declared | 12.4 mph · 20 km/h | 12.4–21.7 mph · 20–35 km/h | differs |
| Clutch declared | Pedal-operated dry BORG & BECK single-plate clutch | — | — |
| Hydraulics & hitch | |||
| Pump flow declared | 7.4 gpm · 28.0 L/min | 9.3 gpm · 35.2 L/min | +26% 531 |
| Rear PTO speeds declared | 540/1000 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,189 lb · 1,900 kg | 4,116 lb · 1,867 kg | — |
| Wheelbase declared | 76.7 in · 1,948 mm | 86.3 in · 2,191 mm | +12% 531 |
| Length declared | 118.0 in · 2,997 mm | 130.0 in · 3,302 mm | +10% 531 |
| Width declared | 64.0 in · 1,626 mm | 79.6 in · 2,022 mm | +24% 531 |
| Ground clearance declared | 15.9 in · 404 mm | 21.0 in · 533 mm | +32% 531 |
| Turning radius, braked declared | 10.1 ft · 3.08 m | 7.9 ft · 2.41 m | +28% 950 (Implematic) |
| Fuel tank declared | 55.2 qt · 52.2 L | 69.2 qt · 65.5 L | +25% 531 |
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.
David Brown 950 (Implematic) sources
- Source: Traktorenlexikon, “David Brown 950”
J.I. Case 531 sources
- Source: Traktorenlexikon, “Case 531”