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公开(公告)号:US06525440B1
公开(公告)日:2003-02-25
申请号:US09556888
申请日:2000-04-19
IPC分类号: H02K516
CPC分类号: G11B33/1406 , F16C19/525 , F16C33/32 , F16C2370/12 , G11B19/2009 , G11B25/043 , H02K5/1732
摘要: This invention deals with compensating for thermal changes such that the spindle motor bearing preload remains as constant as possible throughout the disc drive operational temperature range. This is achieved by selecting a combination of materials with a composite thermal expansion that offsets the differential expansion of the steel bearing supports and the ceramic balls. The change in materials and configuration can be either that of the shaft, the hub, the support members, or any combination thereof.
摘要翻译: 本发明涉及补偿热变化,使得在整个盘驱动器工作温度范围内,主轴电动机承受预载荷保持恒定。 这通过选择具有抵消钢轴承座和陶瓷球的不同膨胀的复合热膨胀的材料的组合来实现。 材料和构造的变化可以是轴,轮毂,支撑构件或其任何组合的变化。