Dynamic pressure bearing device

Dynamic pressure bearing device

  • CN 1,910,377 A
  • Filed: 01/12/2005
  • Published: 02/07/2007
  • Est. Priority Date: 01/14/2004
  • Status: Active Application
First Claim
Patent Images

1. a fluid bearing unit comprises:

  • spindle unit;

    With the radial support part, described radial support partly is formed with the radial bearing gap around the periphery of spindle unit, and supports described spindle unit by the dynamic pressure effect of the fluid that produces in non-contacting mode along radial direction in the radial bearing gap, whereinSpindle unit has the guiding surface that is used as guide when other parts are press fit in the spindle unit;

    With passivation portion, described passivation portion is formed between the outer surface of guiding surface and the spindle unit adjacent with described guiding surface, and described passivation portion has the shape that wherein said limit is passivated.

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