The emergency bearing for a rotary machine having magnetic bearings
comprises an emergency landing device including an intermediate element
(9) having a large contact area with a stator element (10), the
intermediate element (9) being interposed between a bearing member (1, 2,
3) and the stator element (10) fixed to the stator (15) with radial
clearance (11, 13) relative to said stator element (10). A damper element
(13) acting in the radial direction is interposed between the
intermediate element (9) and the stator element (10), and a contact
element (14) having very low friction is implemented between the
intermediate element (9) and the stator element (10) to reduce friction
during rotary movements between these two elements.