Patent ID: 7594384

Claim:
Spinning rotor ( 1 ) for an open end rotor spinning machine comprising a rotor shaft ( 2 ), a rotor cup ( 3 ), which has an opening ( 4 ), an inner chamber ( 5 ), a rotor groove ( 6 ), a conically widening slide wall ( 7 ) extending from the opening ( 4 ) to the rotor groove ( 6 ) and a rotor base ( 9 ) arranged opposing the opening ( 4 ) and designed with a bore ( 8 ), through which the rotor shaft ( 2 ) extends at least partially, wherein the rotor shaft ( 2 ) is connected by means of a connection element ( 10 ) to the rotor cup ( 3 ) and the rotor shaft ( 2 ) and rotor cup ( 3 ) comprise a common rotational axis ( 13 ), characterised in that the rotor shaft ( 2 ) and the rotor cup ( 3 ) have connection means ( 11 , 12 ), which are at least partially surrounded by the connection element ( 10 ) configured as a cast part, forming a positive non-releasable connection of the rotor shaft ( 2 ) to the rotor cup ( 3 ).