Zm „ursus” 1934
Series: Ursus
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The Ursus 1934 is a four-wheel-drive tractor from Zm „ursus” and one of the strongest tractors of the Polish works. A turbocharged engine of type DS Martin UR-IV delivers 140 kW (190 KM), and power is split through a 16/8 gearbox, meaning 16 forward and 8 reverse gears. Such fine grading allows speed and pull to be matched precisely in heavy tillage.
At 4,500 mm long, 2,295 mm wide and with a 2,706 mm wheelbase, the 1934 is large without being unwieldy. Four-wheel drive secures traction at high drawbar pull, for example with plough, cultivator or seedbed combination on large areas. In the Ursus type series the 1934 thus stands at the top of the power scale.
The vehicle shows that after decades of small tractors the works also served the class of large tractors, relying on a turbo engine from an outside engine builder. For owners the type is interesting because it combines a lot of pull with fine gearbox grading.
Zm 'Ursus' 1934 – Polish tractor with four-wheel drive: turbocharged DS Martin UR-IV engine rated at 140 kW (190 hp), 16-plus-8-speed gearbox, up to 5,020 mm long with ballast weights
Ursus is a long-established Polish farm-equipment works near Warsaw. The tractor designated '1934' from this works is fitted with four-wheel drive; nothing certain can be said about its build year or further company history from the recorded values.
Read on 3 more paragraphs
The DS Martin UR-IV Z8604.020 engine is turbocharged and produces 140 kW, or 190 hp. The gearbox offers 16 forward and 8 reverse gears. Length stands at 4,500 mm, reaching up to 5,020 mm with rear ballast weights fitted, with a wheelbase of 2,706 mm and a width of 2,295 mm.
190 hp from a turbocharged engine, four-wheel drive and a finely stepped 16-plus-8 gearbox point to a powerful tractor built for heavy field work and precise runs with mounted implements. The option to fit ballast weights, which add over 500 mm to the overall length, suggests use with heavy drawn or mounted implements, where extra weight improves traction.
When buying such a powerful turbocharged tractor, the condition of the turbocharger, the tightness of the charge-air system and the service history of the four-wheel-drive system matter most. The full range of gears in the 16-plus-8 gearbox should also be tested in operation, as synchromesh wear is a common issue in such finely stepped transmissions, and the ballast-weight mounts are worth checking for corrosion and cracking.
Sources: SpecCodex-Register: Kennwerte des Modells Zm „Ursus” 1934
Technical data
Engine
| Engine | DS Martin UR-IV Z8604.020 Turbodoładowany, 140 kW (190 KM)correct |
|---|
Dimensions and weights
| Length | 4,500 mmcorrect |
|---|---|
| Width | 2,295 mmcorrect |
| Wheelbase | 2,706 mmcorrect |
Drivetrain and chassis
| Drive | four-wheel drivecorrect |
|---|---|
| Gearbox | 16/8correct |
Frequently asked questions
What are the dimensions of the Zm „ursus” 1934?
4,500 mm × 2,295 mm.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 6 individual figures for this model. They come from 2 recorded sources; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Sources: Wikipedia (retrieved August 2026) · speccodex.com (retrieved October 2026) · How we check the data
Tractor in 3D section
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