Lako SDTU 346 – specifications
Built: 1989 · Series: SDTU
Data for the version built 1989 · Data origin: Official register · sources
More machines from model year 1989
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Lako SDTU – semi-trailers from 23.2 to 46 tonnes gross weight: 7 versions, unladen weight 6,320–13,340 kg, widths up to 2,590 mm
The SDTU range gathers Lako semi-trailers in the register across several weight classes. The three-digit type designations from 223 to 346 mark individual versions within the range. Trailers and semi-trailers in this weight class fall under EU vehicle category O4 (trailers over 10 tonnes gross weight), the category of heavy semi-trailers and low-loaders for commercial freight and heavy transport.
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The register lists here 7 versions with unladen weights from 6,320 to 13,340 kg at a gross weight of 23,200 to 46,000 kg. Widths range from 2,500 to 2,590 mm.
The span from 23.2 to 46 tonnes gross weight runs from medium-duty to heavy semi-trailers for long-haul transport, covering different axle counts and load types within the same range. The consistently high gross weight from around 23 tonnes upward shows that the SDTU range is positioned exclusively in the heavy semi-trailer segment for general and consolidated cargo transport, without lighter versions for local distribution.
When buying a used trailer in this class, check above all the chassis and main beams for rust and cracks, the condition of axles, suspension and brakes, and the tightness of the floor and side panels. Spare parts for axles, brakes and lighting are available through the general trailer parts trade. It is also worth checking tyre age and tread depth, the function of the lighting system together with reflective markings, and proof of the periodic roadworthiness inspection.
Sources: SpecCodex register, model data: Lako SDTU, Zulassungsdaten RDW (Niederlande)
Technical data
Dimensions and weights
| Width | 2,590 mmcorrect |
|---|---|
| Coupling-to-axle distance | 750 mmcorrect |
| Unladen weight | 13,340 kgcorrect |
| Gross vehicle weight | 46,000 kgcorrect |
Drivetrain and chassis
| Top speed | 100 km/hcorrect |
|---|
Frequently asked questions
How much does the Lako SDTU 346 weigh?
The unladen weight is 13,340 kg.
What is the gross vehicle weight of the Lako SDTU 346?
46,000 kg.
Up to what speed is the Lako SDTU 346 approved?
Approved up to 100 km/h.
When was the Lako SDTU 346 built?
Production years: 1989.
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 7 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: RDW — Dutch national vehicle register (retrieved August 2026) · Data sources and cross-checks
Trailer in 3D section
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