Understanding Commercial Vehicle Airlines

Commercial vehicle airlines are an essential link between a tractor unit and trailer. They transfer compressed air to the trailer's braking system, helping ensure the vehicle operates as intended on every journey.

While they may not be the most visible component, airlines play a vital role in the safe operation of commercial vehicles.

How do commercial vehicle airlines work?

Two airlines are used to connect the tractor unit and trailer:

• The service airline carries the air pressure signal that operates the trailer brakes during normal driving.

• The emergency airline provides a continuous air supply to the trailer and acts as a safety feature. If air pressure is lost or the airline becomes disconnected, the trailer's brakes are designed to apply automatically.

Working together, these airlines help deliver consistent and dependable braking performance.

Why are airlines coiled?

Airlines are designed with a coiled construction so they can extend and retract as the vehicle moves. This flexibility allows the tractor unit and trailer to turn freely.

The retractable design on airline coils also help to reduce unnecessary strain during everyday operation, contributing to a longer service life.

Choosing the right commercial vehicle airlines

The quality of an airline can have a significant impact on reliability and durability. Selecting well-designed products helps ensure dependable performance in demanding commercial vehicle environments.

At Autac, we supply a range of commercial vehicle airlines to suit a variety of applications. Whether you're replacing an existing airline or sourcing components for new vehicles, our team can help you find the right solution for your requirements.

Commercial vehicle airlines may be a small part of a truck and trailer combination, but they perform an essential function. Choosing quality products helps keep vehicles connected and operating reliably, day after day.

If you’d like to learn more about airline coils, our team are more than happy to help!

+44 (0) 1625 619 277