Decoupling device for mounting a shaft on a base and radial ondular washer

A decoupling device for a bearing arrangement for rotatably supporting a shaft in a housing, said decoupling device comprising

• an outer bearing ring configured with a circularly cylindrical outer surface, within which bearing ring the shaft is rotatably mounted,
• a housing inner surface that surrounds the bearing ring outer surface,
• wherein at least one elastically deformable radial ondular washer is positioned between the bearing ring outer surface and the housing inner surface and which ondular washer allows a limited relative radial movement between the housing inner surface and the bearing ring outer surface, wherein the ondular washer includes circumferentially-spaced inner and outer support humps defined by respective washer material radial thickness increases, wherein the inner support humps are in constant contact with the bearing ring outer surface and the outer support humps are in constant contact with the housing inner surface, wherein the radial ondular washer includes inner stop humps that are spaced from the bearing ring outer surface and outer stop humps that are spaced from the housing inner surface, and wherein the stop humps are radially opposite to respective support humps.