of which a support flange 46 projects away in the radial direction and which on the inside is connected to an inner ring 50 by means of a multiplicity of cross pieces 48 which are disposed at a uniform spacing from one another in the circumferential direction the inner ring 50 is aligned coaxially with the outer ring 45 and has starting from the cross pieces 48 axially running slots 52 which are disposed at a uniform spacing from one another in the circumferential direction two slots 52 accommodate between them in each case a latching hook 54 with a shank 55 which starts from that end region 56 of the inner ring 50 which is remote from the cross pieces 48 and is closed at the top in the circumferential direction and has a radially outwardly directed latching nose 57 at its free end which faces the cross pieces 48 the latching noses 57 each have a sliding face 58 which faces the sliding face 36 of the latching protrusion 35 the sliding faces 58 are oriented so as to correspond with the sliding face 36 at an angle u03b2 of 25 u00b0 in relation to a plane which is oriented perpendicular to the rotation axis 21 of the drive shaft 20 the outer ring 45 and the inner ring 50 define between them a receiving space 59 into which a multiplicity of ribs.