A bearing for an arbor or staff of a rotary wheel set of a timepiece movement, the bearing including a bearing block provided with a housing and an endstone arranged inside the housing, the endstone having a main body provided with a cavity configured to receive a pivot of the arbor of the rotary wheel set, the pivot having the shape of a first cone having a first solid angle, the apex of the first cone being rounded with a predefined first radius of curvature in a range from 0.2 μm to 50 μm, the cavity having a second cone shape with a second solid angle, greater than the first solid angle, so that the pivot can rotate in the cavity, the apex of the second cone being rounded and having a predefined second radius of curvature. The second radius of curvature is smaller than the first radius of curvature.

A bearing for an arbor or staff of a rotary wheel set of a timepiece movement, the bearing including a bearing block provided with a housing and an endstone arranged inside the housing, the endstone having a main body provided with a cavity configured to receive a pivot of the arbor of the rotary wheel set, the pivot having the shape of a first cone having a first solid angle, the apex of the first cone being rounded with a predefined first radius of curvature in a range from 0.2 μm to 50 μm, the cavity having a second cone shape with a second solid angle, greater than the first solid angle, so that the pivot can rotate in the cavity, the apex of the second cone being rounded and having a predefined second radius of curvature. The second radius of curvature is smaller than the first radius of curvature.

A cage (5) for separating rolling bodies (2) for a bearing (1), particularly for a timepiece bearing, the cage having first openings (50) for receiving rolling bodies and at least one first contact zone (56) intended to come into contact with a bearing ring and having at least one first hollow formation (52).

A regulator for a striking mechanism of a mechanical watch including a base, which can be assembled in a fixed manner with regard to the housing and which rotatably mounts a rotary wheel. At least two mass elements are arranged on the rotary wheel and by way of a rotation of the rotary wheel are deflectable radially outwards counter to a spring force on account of the centrifugal force, in order to regulate the rotation speed of the rotary wheel. At least three bearing elements are attached to the base, the bearing elements engaging peripherally on the rotary wheel, in order to mount this relative to the base.

A device (1) for guiding a rotary shaft (6) of a sprung balance. The device includes at least the rotary shaft and a guide bearing (2) for guiding an end of the rotary shaft of the sprung balance, the guide bearing including at least one blade (3) and a surface (5) for coming into contact with and holding the end of the rotary shaft of the sprung balance. At least one end part of the shaft and at least the blade and the contact surface of the guide bearing are made of a material with a Young's modulus of less than or equal to 100 GPa and to reduce the coefficient of friction of the contacting parts.

A device (1) for guiding a rotary shaft (6) of a sprung balance. The device includes at least the rotary shaft and a guide bearing (2) for guiding an end of the rotary shaft of the sprung balance, the guide bearing including at least one blade (3) and a surface (5) for coming into contact with and holding the end of the rotary shaft of the sprung balance. At least one end part of the shaft and at least the blade and the contact surface of the guide bearing are made of a material with a Young's modulus of less than or equal to 100 GPa and to reduce the coefficient of friction of the contacting parts.

A bearing includes a shaft which pivots in the bearing. The shaft includes, at at least one end thereof, a shoulder via which the shaft is in contact with an opposite surface of the bearing. The shoulder is extended by a pivot engaged in a hole provided in the bearing. The opposite surface of contact of the bearing includes at least one hollow in order to reduce the surface of contact between the shoulder of the shaft and the bearing. Application is made to the production of a bearing for a shaft of a horology movement.

A mechanical horological bearing (1) intended to be arranged on a mechanical timepiece movement (10), the bearing (1) including, coaxial around a common rotation axis (D), at least one internal frame (4) and at least one external frame (5) forming a running track (20), as well as a plurality of wheels (12) sliding or rolling in the running track (20), during a relative movement between the internal frame (4) and the external frame (5) that guides them and wherein at least one of the internal frame (4) and external frame (5) is a dynamic frame, at least one structural part of the bearing (1) being produced from an elastic metal material with a high damping capacity, the damping factor of which is greater than 10%, preferably greater than 30%.

A regulator for a striking mechanism of a mechanical watch including a base, which can be assembled in a fixed manner with regard to the housing and which rotatably mounts a rotary wheel. At least two mass elements are arranged on the rotary wheel and by way of a rotation of the rotary wheel are deflectable radially outwards counter to a spring force on account of the centrifugal force, in order to regulate the rotation speed of the rotary wheel. At least three bearing elements are attached to the base, the bearing elements engaging peripherally on the rotary wheel, in order to mount this relative to the base.

An element for radial guiding of a pivot of a rod of a rotating wheel, for example a rod of a balance, for a bearing of an horological movement, in particular shock-absorbing, the guide element including a body configured to cooperate with a bearing unit in such a way as to be maintained in the unit, the body defining a space for radial retention of the pivot, to maintain the rod radially while allowing it to rotate. The radial guide element includes at least three localized radial-bearing parts distributed angularly, the three parts defining the radial retention space, each part having a face for contact with the pivot, each face locally having a cylindrical shape convex towards the inside of the radial retention space, the bearing parts having an elongated body.