Flachs RK-40-10
Built: 2019 · Series: Other models
More machines from model year 2019
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Flachs RK-40-10 – a heavy EU class O4 trailer with a 15,000 kg gross weight, 11,540 kg kerb weight, 12,500 mm length and a design speed limited to 80 km/h
The Flachs RK-40-10 belongs to EU trailer class O4, covering all trailers and semi-trailers with a gross vehicle weight above 10,000 kg. This class requires compressed-air brakes, fed from the towing vehicle's brake system, and trailers of this kind run in long-distance haulage behind suitably approved tractor units or lorries.
Read on 3 more paragraphs
At a gross weight of 15,000 kg and a kerb weight of 11,540 kg, the payload comes to about 3,460 kg. At 12,500 mm long, 2,550 mm wide and with an 8,850 mm wheelbase, it is laid out for long rather than extremely heavy loads. Unlike most trailers of this size, its design top speed is limited to 80 km/h rather than the usual mark.
Trailers of this type and length are used for general cargo, long components or machinery that need more load area than payload capacity. The compressed-air brake system, with its lines, coupling heads and a brake cylinder on each axle, needs to be leak-free and correctly adjusted to reach full braking effect.
When buying used, check the air lines for cracks and the coupling heads for tightness, as well as the brake cylinder stroke on each axle. Because of the long build, the chassis deserves particular attention for distortion and corrosion at the cross members. Wheel bearings, tyres and the drawbar coupling gear complete the inspection.
Sources: SpecCodex-Register: Kennwerte des Modells RK-40-10
Technical data
Dimensions and weights
| Length | 12,500 mmcorrect |
|---|---|
| Width | 2,550 mmcorrect |
| Wheelbase | 8,850 mmcorrect |
| Unladen weight | 11,540 kgcorrect |
| Gross vehicle weight | 15,000 kgcorrect |
Drivetrain and chassis
| Top speed | 80 km/hcorrect |
|---|
Frequently asked questions
How much does the Flachs RK-40-10 weigh?
The unladen weight is 11,540 kg.
What is the gross vehicle weight of the Flachs RK-40-10?
15,000 kg.
Up to what speed is the Flachs RK-40-10 approved?
Approved up to 80 km/h.
What are the dimensions of the Flachs RK-40-10?
12,500 mm × 2,550 mm.
When was the Flachs RK-40-10 built?
Production years: 2019.
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.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
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.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
Sources: RDW — Dutch national vehicle register (retrieved August 2026) · How we check the data
Trailer in 3D section
Turn the model, look inside and click an assembly — each one is explained.
