| 摘要 |
The bearing has a circular support (101) with a housing (106) to receive a pivot system in which a rod (103a) of a balance staff (103) is inserted. A radial and axial deformation spring (110) is arranged to exert the axial force on the system. The spring is made of partially or totally amorphous material with metal element e.g. precious metal element or alloy with precious metal element such as gold, platinum, palladium, rhenium, ruthenium, rhodium, silver, iridium or osmium. The system includes a bush (120) arranged in the housing and supporting a pierced jewel (104) traversed by the rod.
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