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Thread: Hong Hua sleeve bearing fan

  1. #11
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    One thing I liked about side fans is that the fan bearing took a side load, while for top bearings it is an axial load; along with the fact that the top fan is more likely to lose lubricant along the shaft.
    Last edited by ashiekh; 01-28-2020 at 10:45 PM.

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    So I ordered Antec NE550 Gold on this Monday just in order to check what type of bearing it currently has. Now I have the one. Yes. It's a plain sleeve.





    other pics: https://imgur.com/a/0gOSk60

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  4. #13
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    Given enough oil a sleeve bearing can last a long time; I tend to re-oil my sleeve fans with fully synthetic engine oil and they seem to last (I am thinking to move to fully synthetic steering fluid); new they are often very dry.
    Last edited by ashiekh; 01-29-2020 at 06:47 PM.

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    Quote Originally Posted by rgbodosk View Post
    I found a strange thing,

    The new Seasonic core is advertised as sleeve, but...
    http://coolenjoy.net/bbs/review/760166
    It uses HA1225M12S-Z fan.
    Where is it "advertised" as having a sleeve bearing fan? Seems pretty crappy to put a sleeve bearing fan in a Gold efficiency power supply.

    Quote Originally Posted by vvvpcf View Post
    So I ordered Antec NE550 Gold on this Monday just in order to check what type of bearing it currently has. Now I have the one. Yes. It's a plain sleeve.
    That's pretty shitty. They saved a whole 2 cents to do that?

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    Quote Originally Posted by Jon Gerow View Post
    Where is it "advertised" as having a sleeve bearing fan? Seems pretty crappy to put a sleeve bearing fan in a Gold efficiency power supply.
    Seasonic's own webpages for Core GM, Core GC, and Core GX all say Sleeve Bearing.

  8. #16
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    Quote Originally Posted by rgbodosk View Post
    I found a strange thing,

    The new Seasonic core is advertised as sleeve, but...
    http://coolenjoy.net/bbs/review/760166
    It uses HA1225M12S-Z fan.
    Well.. If that Antec has a sleeve bearing fan and Seasonic says they're using a sleeve bearing fan, then I guess there are still Hong Hua sleeve bearing fans out in the wild.

    Shame, really.


    Quote Originally Posted by vvvpcf View Post
    So I ordered Antec NE550 Gold on this Monday just in order to check what type of bearing it currently has. Now I have the one. Yes. It's a plain sleeve.





    other pics: https://imgur.com/a/0gOSk60
    Quote Originally Posted by Tator Tot View Post
    Seasonic's own webpages for Core GM, Core GC, and Core GX all say Sleeve Bearing.

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  10. #17
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    Just for the sake of discussion, can someone explain to me why rifle bearings are so much better than sleeve?

    I'll play devil's advocate: any groove would deflate the bearing's pressure.
    Last edited by ashiekh; 01-30-2020 at 06:09 PM.

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    Quote Originally Posted by ashiekh View Post
    Just for the sake of discussion, can someone explain to me why rifle bearings are so much better than sleeve?

    I'll play devil's advocate: any groove would deflate the bearing's pressure.
    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.

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    Quote Originally Posted by ashiekh View Post
    Just for the sake of discussion, can someone explain to me why rifle bearings are so much better than sleeve?

    I'll play devil's advocate: any groove would deflate the bearing's pressure.
    Rifle bearing can mounted horizontally without almost any affect on life span.
    Sleeve bearing 'dont like' to mount horizontally like in PSU.
    In the end not all the fans with the same bearing are the same, rifle bearing has a lot of different grooves.
    Not all the fans have the same sealing to dust, build quality, ECT.
    IMO DBB have the higher minimum standard.

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  14. #20
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    Quote Originally Posted by rgbodosk View Post
    IMO DBB have the higher minimum standard.
    But they're louder at low RPMs and that's the problem everyone is trying to solve.

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