A rotor bearing comprising at least one support disc pair, which is comprised of two support discs (40, 41, 42, 43), which are arranged in such a way that they form a wedge gap, and a spinning rotor (3) with a rotor shaft (4), which is mounted in the wedge gap. The invention is to provide a support disc bearing that is easy to produce. For this purpose, a rolling bearing (45) is arranged in the base body (44) of the support discs (40, 41, 42, 43) and the rolling bearings (45) are in each case applied on a fixed bearing bolt (50, 51, 52, 53). The invention furthermore relates to the support disc (40, 41, 42, 43) and a method for producing the support disc (40, 41, 42, 43).