Patent ID: 6163441
Filing Date: 2000-12-19
Classification: F16C,G11B

Abstract:
An actuator for a disc drive, comprising:an E-block forming a central supporting body;a bore centrally displaced within the E-block;a plurality of arms supported by the E-block;an array of read/write heads supported by the arms;a coil supported by the E-block;a bearing cartridge disposed in the bore of the E-block, the bearing cartridge comprising:a stationary shaft;a bearing supported by the shaft;a circular sleeve encasing the stationary shaft and rotatably supported by the bearing for rotation about the stationary shaft; anda circular damping member circumferentially supported by an inner surface of the sleeve and encased within the circular sleeve and encasing the shaft for damping resonant frequencies of the E-block; anda tolerance ring interposed between the bearing cartridge and the E-block to secure the bearing cartridge within the bore.