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Labyrinth Seal for Pivot of a Spindle Motor

IP.com Disclosure Number: IPCOM000116027D
Original Publication Date: 1995-Jul-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 32K

Publishing Venue


Related People

Nakamoto, T Ohta, M Tsuda, S Tsujino, H [+details]


Disclosed is a design to minimize the amount of grease leak in a Hard Disk Drive. For high reliability, it is very important to keep the atmosphere inside the disk enclosure very clean. But, lubricant grease which is used in the bearings of spindle motors often leaks due to rotation. Spindle motors have ferro-fluid seals or labyrinth seals to prevent this.