alternator freewheel

The alternator's freewheel is an important component of a vehicle's belt drive system. Located on the alternator's pulley, it ensures that the engine's rotational motion is efficiently transferred to the alternator while simultaneously reducing vibrations and stresses in the drive system.

Unlike a fixed pulley, the alternator's freewheel allows for decoupled rotation. If the engine speed changes suddenly, for example during gear changes or rapid engine braking, the alternator can briefly continue to rotate freely. This reduces tension fluctuations in the serpentine belt.

This design protects not only the alternator itself, but also other components of the belt drive, such as the serpentine belt, belt tensioner, and idler pulleys. A defective freewheel can lead to unusual noises, excessive belt wear, or rough running of the belt drive.

Alternator freewheels consist of precision mechanical components and are designed for high speeds and continuous loads in the engine compartment.

At Autoteile Gossau, you'll find alternator freewheels in original equipment and high-quality aftermarket versions at the best prices in Switzerland. Many products are readily available and can be delivered or picked up directly from our store in Gossau. Payment is conveniently accepted in cash or by card.