Frictional rotary connection

Rotary connecting means based on frictional engagement, having

• a hollow shaft (2) to be placed on a shaft and a tapered ring arrangement (3) of at least one tapered ring section (e.g. 4a) with an inner surface for abutting the hollow shaft (2), and with an oblique outer surface (e.g. 5a);
• at least one tensioning ring element (e.g. 6a) having an oblique inner surface, which element slides between a starting position and a tensioning position along the oblique outer surface (e.g. 5a) of the tapered ring section (e.g. 4a);
• and
• tensioning means for moving the tensioning ring element (e.g. 6a) into the tensioning position,
• characterized in that
• in addition to the tensioning means there is provided at least one separate retaining element (8) for securing the tensioning ring element (e.g. 6a) in the tensioning position, which element is arranged to be guided in a radial direction independent of the tensioning means from a free position into a tensioning position in which the retaining element (8) axially blocks the tensioning ring element (e.g. 6a).