Supporting disk for a supporting disk bearing arrangement for open-end spinning rotors

摘要

A supporting disk for a supporting disk bearing arrangement for open-end spinning rotors is provided with a disk-shaped basic body as well as an outer ring anchored to it. The circumference of the outer ring is constructed as a running surface for a shaft of an open-end spinning rotor. The outer ring and the basic body are made of plastic material. The outer circumference of the basic body and the inner circumference of the ring are provided with a surrounding undercut-type profiling respectively which engage in a form-locking manner and which are designed as a projection on the ring and as a recess on the basic body. The non-cut profiling is achieved by manufacturing the outer ring in a first tool and subsequently placing the ring in a second tool. The basic body is injection-molded to the outer ring on this second tool.