Abstract: An annular elastic magnetic body 3 as the magnetic member for a rotation detector contains hydrogenated nitrile rubber as base material and not more than 90 weight percent strontium-based ferrite as a magnetism imparting component. Therefore, the annular elastic magnetic body 3 has no cracks in a thermal shock test (with thermal shock between −40° C. and 150° C.) and resists harsh conditions on operating temperature. The magnetic member contains not less than 80 weight percent the strontium-based ferrite and therefore ensures a magnetic flux density required for a rotation detector. Thus, the magnetic member for a rotation detector is resistant to harsh conditions on operating temperature and has a stable magnetic property.

Abstract: A seal ring attached to a shoulder portion of a bearing ring of a rolling bearing, and including an annular body, a pulsar ring bonded to a required position of the annular body by vulcanization forming, a first lip made of magnetized rubber and formed integrally with one surface of the pulsar ring and a second lip bonded to the other surface of the pulsar ring by vulcanization molding.

Abstract: Establishment of traceability of rebuilt parts are required. A system for managing rebuilt parts of vehicles comprises a format delivering device, an information input device, an attached part database and an attached part database manager. A format delivering device delivers a vehicle communication format on which a part number and a part lot number of a rebuilt part are identified. An information input device is used to input to the system information on a vehicle to which the rebuilt part identified according to the vehicle communication format, is attached. An attached part database stores information on a vehicle to which the rebuilt part is attached, in such a way that the information is related to the part number and part lot number of the rebuilt part. An attached part database manager manages the attached part database.

Abstract: A seal ring attached to a shoulder portion of a bearing ring of a rolling bearing, and including an annular body, a pulsar ring bonded to a required position of the annular body by vulcanization forming, a first lip made of magnetized rubber and formed integrally with one surface of the pulsar ring and a second lip bonded to the other surface of the pulsar ring by vulcanization molding.