housing 2 and with its middle region in the direction of the facing outside of the respective bearing 3 the bearing segments 3 are held fixed in direction of a bearing axis that is perpendicular to the drawing plane or in the axial direction of the central axis of the recess of the bearing housing 2 and in circumferential direction of the shaft 4 through bolts 6 which with a head part 6 u2032 each project into a recess on the outside of the respective bearing segment 3 and with a worm screw like shank 6 u2033 are screw adjustably turned into a corresponding threaded bore of the bearing housing 2 the shank 6 u2033 of each bolt 6 penetrates a recess 7 of the leaf spring 5 see also fig3 5 with a preferentially threadless portion wherein the edge of the recess 7 is overlapped by a radial annular step formed on the transition between head part 6 u2032 and shank 6 u2033 of the bolt on the side of the leaf spring 5 facing the respective bearing segment 3 accordingly the maximum deflection stroke of the middle region of the leaf spring 5 near the bolt in the direction of the shaft 4 can be limited through screw adjustment of the bolt 6 preferentially the deflection stroke of the leaf spring 5 is limited through screw adjustment of the bolt 6 in such a manner that the respective bearing segment 3 between the circumference of the shaft 4 and the leaf spring 5 contacting the annular step of the bolt 6 has a small radial play when the shaft 4 assumes a position in which the axis of the shaft 4 coincides with the aforementioned bearing axis at the.