Mechanism (20) for adjusting the backlash of a watch movement (40) for a watch part (300), the mechanism comprising: - an axis (D), - a first component (1), - a second component (2) intended to receive or form at least one bearing (15), in particular at least one shock-absorbing bearing (15), - interface elements (4) cooperating with the first and second components, - a return element (8) returning the first and second components in cooperation with the interface elements (4), and - at least first conformations (6, 5, 3.1) of the first and second components cooperating with the interface elements (4) to move the interface elements (4) relative to the axis (D) along a plane (P) perpendicular or substantially perpendicular to said axis (D) and thus move the second component (2) in translation along said axis (D) relative to the first component (1) under the effect of the rotational displacement around said axis (D) of the first component (1) or of the second component (2).