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  1. #1
    Senior Member Pain4Pleasure's Avatar
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    american and mid

    ok i heard mid bearings and american bearings are the same so does that mean you can just pop the bearing out of the cup on the american and use it on a mid size bearing frame?.........just wondering

  2. #2
    Banned. Prozakk's Avatar
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    A Mid is an American without the cup. Press the bearing into the frame, minus the cup.

  3. #3
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    No. A Mid, when using a 3/4" (19mm) spindle uses the standard R12 bearings that a Profile or Odyssey crank will come with in the American BB kits. If you use a 22mm spindle, though, you'll need a custom bearing, as the outer diameter will be too wide.

  4. #4
    Banned. Prozakk's Avatar
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    Quote Originally Posted by Beerman
    No. A Mid, when using a 3/4" (19mm) spindle uses the standard R12 bearings that a Profile or Odyssey crank will come with in the American BB kits. If you use a 22mm spindle, though, you'll need a custom bearing, as the outer diameter will be too wide.
    I'm so stuck on those 2 brands I forget others exist.

  5. #5
    Senior Member Pain4Pleasure's Avatar
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    ok thanks!

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    confusingly the 22mm mid bearing is also called an r12

  7. #7
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    I believe that R12 refers to the outer diameter.

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