The invention relates to a rotating, disc-shaped, agricultural tool (1) which is mounted in a frame (34) of a machine via a hub and a bearing arrangement. The bearing arrangement is distinguished by the fact that it is formed from two angular roller bearings (2, 3) which are set in back-to-back arrangement and whose raceways are arranged inclined at an angle () to a bearing axis (12), wherein a space (36) accommodating the angular roller bearings (2, 3) is defined on the outside in the radial direction by a hub body (17), of V-shaped design in its centre part and having contact surfaces (19, 20), and on the inside in the radial direction by a supporting ring (25) having spaced-apart contact surfaces (26, 27) on both sides in the axial direc...
