Invention Grant
- Patent Title: Fluid dynamic bearing groove configuration
- Patent Title (中): 流体动力轴承槽配置
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Application No.: US14515318Application Date: 2014-10-15
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Publication No.: US09361932B2Publication Date: 2016-06-07
- Inventor: Chiaoping Ku
- Applicant: HGST Netherlands B.V.
- Applicant Address: NL Amsterdam
- Assignee: HGST Netherlands B.V.
- Current Assignee: HGST Netherlands B.V.
- Current Assignee Address: NL Amsterdam
- Agent John D. Henkhaus
- Main IPC: G11B19/20
- IPC: G11B19/20 ; F16C17/02 ; F16C17/10

Abstract:
A fluid dynamic bearing (FDB) includes a groove configuration that includes a pressure-generating groove pattern, and additionally includes a circumferential groove adjacent to the pressure-generating groove pattern and a pumping groove pattern adjacent to the circumferential groove. The circumferential groove may be deeper than the associated pumping and pressure-generating groove patterns and may extend for 360 degrees, and the pumping groove may be positioned at or near the entry to the bearing journal area to help maintain fluid flow direction and minimum pressure. Such an FDB groove configuration is likely to provide improved damping characteristics while maintaining relative stiffness, thereby improving vibration response characteristics.
Public/Granted literature
- US20160111124A1 Fluid Dynamic Bearing Groove Configuration Public/Granted day:2016-04-21
Information query
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