How often do you change your motor bearings?

Discussion in 'Electronics' started by Jason Herring, Jan 1, 2014.

  1. Jason Herring

    Jason Herring Member

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    With maintenance on multi-rotors how often do you replace your bearings
    .?and where do you buy the replacement parts e clips bearing washers?
    Thanks,
    I have 2814 motors made by aerial media pros, they said they don't sell internal motor parts. I wish I would have known that before starting down that road with that CO., in the future I will only buy motors from a CO, that Carries parts for there motors,
     
  2. Gary Haynes

    Gary Haynes Administrator
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    Bearings from Quadrocopter or Boca Bearings. Bearing replacement tool from Bart at www.multirotorforums.com. Clips/washers from McMaster-Carr. The tool Bart sells comes with 20 clips. Only replace on condition. Sound will change. Perhaps after a severe crash. There aren't any other user replaceable parts.
     
  3. Jason Herring

    Jason Herring Member

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    Thanks so much, is there a way to find out the size of the washer and clip, I bought Bart's tool and after changing the bearings I have a slight up down movement , is that ok ?
     
  4. Patrick Thompson

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    Don't be afraid to swap out your bearings, and inspect/clean your motors after 60-80 hours of use. These are radial bearings, employed on a perpendicular load axis, without the support of a thrust bearing; they wear significantly faster than when used in their purposed application. There's no reason to ditch a bearing if it works well, either. Just note it in your service logs and continue the usage cycle.
     
  5. Jason Herring

    Jason Herring Member

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    Sounds great, what about up and down movement ? Very slight, how do you figure the exact thickness of the washer and e clip?
    , are there company's out there that Cary replacement parts for the motors they sell, like a rebuild kit, for the next set of motors that will be a big factor on which ones I go with.
     
  6. Patrick Thompson

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    Jason, I'f you've got "up and down" movement in the bearings, change them; be sure it's not from vertical shaft play, which can be remedied by shimming- though I'm not sure of your motors specs.

    They look identical to the T-motor version:
    http://www.rctigermotor.com/html/2013/Professional_0912/46.html

    If this is the case, then you can get spares from t-motor, or use specs to source your own.

    If specs can't be acquired from the motor manufacturer, or just pop them out carefully, and take them to a local bearing supplier(look for "Automation Equipment Suppliers"), in your area. Don't bother with fancy ceramic bearings; a basic ABEC rated bearing for high RPM will do the trick. When you find a source for them, but enough for a few changes, bulk buys often yield significant discounts.

    For installing bearings, get a cheap manual press from Harbour Freight, along with an appropriately sized bearing removal/press tool. It's a simple process that will give you huge piece of mind.

    Good luck,
    PT
     
  7. Richard Dobson

    Richard Dobson New Member

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    In addition to changing the bearings should one apply any type of lube to the bell?
     
  8. Ozkan Erden

    Ozkan Erden Distributor

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    No need for any lube.

    After taking off the bearings, I always clean the motors magnets with WD40. It takes off the dust and small particles out of the motor.

    After cleaning, I put the new bearings in.
     

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