Coupling heads and stabiliser couplings for trailers and caravans
Secure connection between towing vehicle and trailer
The coupling securely connects the trailer or caravan to the towing vehicle. With a coupling head, the mechanism encloses the towball of the towbar on the vehicle. This connection transmits the towing and nose forces that arise while driving.
Depending on the vehicle and intended use, different coupling systems may be suitable. While classic coupling heads primarily provide a reliable mechanical connection, stabiliser couplings add an additional stabilising function. They help reduce unwanted movements of the trailer and can thus contribute to a smoother ride — especially with caravans.
AL-KO VT offers solutions for a range of braked and unbraked trailers as well as for caravans. Decisive criteria for choosing the right coupling for your trailer include the permissible gross weight, nose load, drawbar connection, and the type of ball connection.
More safety and control for your rig
The advantages of the right coupling for your trailer
A reliable coupling needs to match the relevant trailer and its technical requirements. In addition to a secure connection, different systems also offer further advantages depending on the application:
- Secure connection: Reliable transmission of force between towing vehicle and trailer.
- Matched to the application: Different versions for braked and unbraked trailers as well as various weight classes.
- Improved handling stability: Stabiliser couplings reduce unwanted snaking and pitching movements.
- Smoother ride: Mechanical damping can help to stabilise the entire rig, particularly on caravan journeys.
- Various installation situations: Couplings are available for different drawbar connections, weight classes, and nose loads.
How does a coupling head work?
Mechanical connection with the towing vehicle
The coupling head creates the mechanical connection between the trailer and the towing vehicle and transmits the towing and nose forces that occur while driving. It also allows the necessary articulation of the rig during travel.
Which coupling head is suitable depends on the specific trailer and its technical requirements. Key factors include the permissible gross weight, nose load and the drawbar connection. The coupling should therefore always be selected to match the trailer and its intended application.
What is a stabiliser coupling?
Additional stabilisation on the road
A stabiliser coupling not only provides a secure connection between towing vehicle and trailer, but also helps to increase the stability of the combination while driving. Integrated friction pads counteract unwanted snaking and pitching movements and help keep the trailer reliably on track.
This means that, particularly in the event of crosswinds, evasive manoeuvres or overtaking, movements of the trailer can be damped before they become more pronounced. This ensures more stable handling and greater control of the whole rig.
With the AKS 3004, AL-KO VT offers a well-established stabiliser coupling for caravans.
Frequently asked questions about coupling heads and stabiliser couplings
A coupling head connects the trailer’s drawbar to the towball of the towing vehicle. The coupling mechanism encloses the towball and transmits the towing and nose forces between trailer and vehicle.
A coupling head provides the mechanical connection between the towing vehicle and the trailer. A stabiliser coupling is also equipped with integrated friction pads that damp snaking and pitching movements, helping to stabilise the handling of the rig.
Friction pads generate a defined resistance to movement at the towball, which effectively dampens snaking and pitching movements, especially laterally. The AKS 3004 uses this principle to reduce snaking.
The suitable coupling depends on the technical data and design of the trailer. Decisive factors include permissible gross weight, nose load, drawbar connection, and the particular type of towball connection.
Stabiliser couplings are especially used where additional driving stability is required. The decisive factor is that the particular coupling is approved for the trailer in terms of weight, nose load and connection type.
There are different couplings for various drawbar connections and trailer types. Whether a particular coupling can be used on an existing trailer must be checked based on technical requirements and the relevant product approval.
After coupling, the head must be fully and securely locked onto the towball. This is determined by the operating and indicator displays of the particular coupling and the details in the respective operating manual.