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Bearing doesn't rotate freely after powdercoating

Discussion in 'The Shop' started by Arena_Swe, Jul 10, 2013.

  1. Arena_Swe

    Arena_Swe Chimp

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    Aug 28, 2006
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    Location:
    San Francisco, CA
    I got my 2009 Ironhorse Sunday powdercoated and all bearings went in fine. All rotate freely except the lower ones in the rear triangle. I thought the bearings didn't like being pressed in, but after removal I realized the rotate freely outside of the frame.

    Have the mounting holes gone out of roundness or what is going on? Has anyone seen this before? I mean the bearings go in like the should, but they are not rotating freely, and I can't get the axel through the bearing either.
    Worth mentioning is that I put the bearings in the freezer for easier assembly, the mounting holes where not painted, but did get some minor blasting on them, in the cleaning process.

    Might not be the easiest thing to try but I am guessing I need to find someone to measure the roundness and line hone them to spec, and potentially need to use some bearing retainer compound (Loctite 609 or similar), or what is the cure?

    Any tips welcome.
     

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