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Buildup on stator

Discussion in 'Electronic Design' started by Andy K, Aug 7, 2013.

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  1. Andy K

    Andy K Guest

    This is a picture of a stator. I think.

    It is from a small desktop fan.

    The motor hums but blade does not turn.

    When it's inserted it moves with a lot of resistance.

    I think it should spin pretty easily.

    Is that blue coating normal or is it a buildup ?

    Thanks.

    http://s1289.photobucket.com/user/drew77580/library/
     
  2. amdx

    amdx Guest

    Your library seems to be private.
     
  3. Andy K

    Andy K Guest

    My mistake, it's a rotor.

    As far as I can tell, there are no bearings.

    I worked on a similar motor before in a vibrator.

    I lightly sanded off the rotor and it worked again.

    Seems to me that the blue material doesn't belong and is causing it to rub on the stator. Unless the rotor expanded on it's own.
     
  4. Andy K

    Andy K Guest

    Thanks Tim and Rheilly.

    I put some light machine oil on both bearings.

    My daughter is very happy to get her fan running again.

    Andy
     
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