Official Answer
Answer
When a wave spring is installed between two components that rotate relative to each other (like a bearing and a housing), the spring is subjected to torsional friction. If the spring is not secured, the friction at the contact points can cause the spring to 'walk' or rotate. In multi-turn springs, this can lead to 'wave-nesting' or 'tangling' of the turns. To prevent this, the spring can be designed with 'locating tabs' that fit into slots in the housing, or the mating surfaces must be hardened to prevent the spring from 'digging in'. Additionally, a thin, hardened 'race' or shim is often placed between the wave spring and the rotating component to provide a low-friction wear surface and protect the spring's waves from being abraded.
