| 摘要 |
A supporting disk for supporting a rotor, in particular the rotor on an open-end spinning rotor, having a hub ring and a supporting ring situated on the outer circumference of the hub ring, made of a polymer material, and having a running surface for the rotor, wherein the supporting ring (1) has at least one lip-shaped projection (7) on at least one of its axial end faces (6).
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