Achslenker

Achslenker is the German term for a suspension link that connects a wheel hub to the vehicle’s chassis, forming part of an independent suspension system. It serves to locate the wheel in its relation to the rest of the vehicle, control the wheel’s motion through suspension travel, and influence steering geometry by maintaining toe and camber within designed limits. The Achslenker transfers vertical, lateral, and braking forces between the wheel and the vehicle structure, while allowing the wheel to move up and down as the suspension articulates.

In typical front-suspension layouts, there are upper and lower Achslenker components, with the exact arrangement depending on the design. In MacPherson-strut suspensions, for example, a lower Achslenker (Unterer Querlenker) works with the strut to guide the wheel, while more complex multi-link suspensions use several arms, including upper and lower links as well as toe or track links. Achslenker ends are usually connected to the wheel hub or knuckle via ball joints or rod ends, and to the chassis or subframe via rubber or hydraulic bushings. They are commonly manufactured from forged or stamped steel or aluminum, chosen for strength, stiffness, and weight considerations.

Wear or damage to Achslenker components can affect alignment, handling, and ride comfort. Common symptoms include clunking noises, uneven tire wear, vague steering, or a wheel that pulls to one side. Inspection focuses on cracks, bending, worn bushings, and joint play. Replacement is typically done in pairs to preserve balanced handling and is followed by a wheel alignment to restore correct geometry.

Related terms include Querlenker (control arm) and other suspension links that form multi-link configurations.