Spinning rotor for an open-end-spinning device operating at high rotor speeds
A spinning rotor ( 3 ) for an open-end spinning device ( 1 ) operating in particular at high rotor speeds with a rotor cup ( 26 ), having a rotor bottom ( 6 ) and an opening ( 30 ) and having an annular wall section ( 31 ) designed as a fiber sliding wall. The rotor cup ( 26 ) in the transitional area between the rotor bottom ( 6 ) and the annular wall section ( 31 ) has a support collar ( 9 ) pointing away from the opening ( 30 ) of the rotor cup ( 26 ).
1. Spinning rotor ( 3 ) for an open-end-spinning device ( 1 ) operating in particular at high rotor speeds, comprising a rotor cup ( 26 ), which comprises a rotor bottom ( 6 ) and an opening ( 30 ) and has an annular wall section ( 31 ) designed as a fiber sliding wall,
characterized in that
the rotor cup ( 26 ) in the transitional area between the rotor bottom ( 6 ) and the annular wall section ( 31 ) has a support collar ( 9 ) pointing away from the opening ( 30 ) of the rotor cup ( 26 ),
characterized in that the support collar ( 9 ) has a depth (T SK ) which is less than a third of the length (L) of the wall section ( 31 ) of the rotor cup ( 26 ).
2. Spinning rotor according to claim 1 , characterized in that the depth (T SK ) of the support collar ( 9 ) is between 2 and 5 mm.