Jozef Zierer KW
Built: 1969 · Series: Other models
More machines from model year 1969
Jozef Zierer KW: an EU class O4 trailer with a 12,000 kg gross weight, a 7,700 mm length and a 6,020 kg payload, registered in the Netherlands
With a gross weight of 12,000 kg, the KW sits just above the 10-tonne threshold and so falls into EU trailer class O4, the heavy trailers, rather than the class O3 below it. A trailer of this size is a pure commercial haulage unit, not a small car trailer.
Read on 3 more paragraphs
Empty, the trailer weighs 5,980 kg, against a permitted gross weight of 12,000 kg, leaving 6,020 kg of payload - a fairly tight ratio for the class that points to a sturdy, correspondingly heavy body. At 7,700 mm long, 2,500 mm wide and with a 4,120 mm wheelbase, it offers a mid-length loading area.
From class O3 upward, a compressed-air braking system is mandatory, and it is fitted as standard at 12,000 kg. Driving such a combination requires a category CE licence in most EU states, since the permitted combined weight exceeds the limits of category C. The fairly tight payload-to-tare ratio suggests use with heavy, compact goods rather than bulky, light cargo.
Buying a used trailer of this type, the condition of the frame and axle mounts matters, since the unfavourable payload ratio suggests regular loading close to the weight limit. The braking system and wheel bearings should be checked for wear, along with the drawbar for cracks around the pivot. Through-corrosion on the load bed is a common finding on older, heavily used trailers of this class.
Sources: SpecCodex-Register: Kennwerte des Modells Jozef Zierer KW, Zulassungsdaten RDW (Niederlande)
Technical data
Dimensions and weights
| Length | 7,700 mmcorrect |
|---|---|
| Width | 2,500 mmcorrect |
| Wheelbase | 4,120 mmcorrect |
| Unladen weight | 5,980 kgcorrect |
| Gross vehicle weight | 12,000 kgcorrect |
Drivetrain and chassis
| Top speed | 100 km/hcorrect |
|---|
Frequently asked questions
How much does the Jozef Zierer KW weigh?
The unladen weight is 5,980 kg.
What is the gross vehicle weight of the Jozef Zierer KW?
12,000 kg.
Up to what speed is the Jozef Zierer KW approved?
Approved up to 100 km/h.
What are the dimensions of the Jozef Zierer KW?
7,700 mm × 2,500 mm.
When was the Jozef Zierer KW built?
Production years: 1969.
What to check before buying
- Search the frame and welds at the axle mounts — that is where cracks start.
- Check the brakes and the last inspection in the papers.
- Work the gross weight against the towing vehicle before buying.
- Compare the chassis number with the papers.
- Look at the floor, cover or body from the inside — rust does not show from outside.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 8 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
The technical data on this page comes from official vehicle registration records (RDW/Traficom), not from the manufacturer.
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Sources: [1]
Trailer in 3D section
Turn the model, look inside and click an assembly — each one is explained.