Magnetic device for centring a shaft in a clockwork movement

A magnetic device for centring a shaft on a predetermined axis in a clockwork movement, the device comprising at least one first magnetic bearing including a first magnet, which is intended to exert an attractive force on a first end pivot, made of ferromagnetic material, of the shaft,

• wherein the first magnetic bearing comprises at least one first central part made of ferromagnetic material mounted between the first magnet and the first end pivot of the shaft, this first central part being positioned centrally in a first washer or bush made of non-magnetic material in such a way as to centre the magnetic field flux generated by the first magnet through the first central part in order to magnetically attract the first end pivot of the shaft on the predetermined axis,
• wherein the first magnetic bearing also comprises a first balance-pivot endstone, which is mounted between the first central part and the first end pivot of the shaft, and
• wherein the first central part is glued or driven into a central opening in the first washer or bush, and wherein the first washer or bush, together with the first central part, are in direct contact with the first magnet and the first balance-pivot endstone.