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Thread: Hong Hua sleeve bearing fan

  1. #21
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    Quote Originally Posted by Jon Gerow View Post
    I would think it is obvious.

    A lower viscosity lubricant is used and is circulated by the grooves.

    Sleeve bearings use a higher viscosity to prevent pooling, but eventually the centrifugal force does result in a pool of lubricant leaving parts of the sleeve unlubricated.

    Furthermore, the grooves increase the oil storage capacity of the bearing.

    Hard drive fluid bearings have rifling groves?

  2. #22
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    Quote Originally Posted by ashiekh View Post
    Hard drive fluid bearings have rifling groves?
    Yes. Of course.


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    Philipus II (02-04-2020)

  4. #23
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    Quote Originally Posted by Jon Gerow View Post
    Yes. Of course.


    That is not what I meant by rifling, that is for axial load; I meant along the shaft.

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    Quote Originally Posted by ashiekh View Post
    That is not what I meant by rifling, that is for axial load; I meant along the shaft.
    Look down the shaft. It's rifled as well.

    Hope this helps: https://www.nidec.com/en/technology/capability/fdb/

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    Philipus II (02-04-2020)

  7. #25
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    Quote Originally Posted by Jon Gerow View Post
    Look down the shaft. It's rifled as well.

    Hope this helps: https://www.nidec.com/en/technology/capability/fdb/

    Grooved radial is different from a helix
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