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Thread: BB30 Help?

  1. #1
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    BB30 Help?

    Background: 2011 Cdale Scalpel, FSA Afterburner crankset.

    Looks like I overtightened the locking nut on my Afterburner crankset and ruined one of the BB30 bearings.
    Now the crank won't turn freely. The problem is, I can only finger-tighten the lock-nut until it makes the crank not spin freely. The FSA manual specifies a torque setting, so I know it should be tightened more.
    The first time I removed the crank, the only washers or spacers there were the lock nut on one side and one spacer on the other side.
    I have purchased a new BB30 set and it comes with the press-fit bearings, spacers, wavy washers, etc...

    What to do?

  2. #2
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    Do you have the correct spacers etc in place? My understanding of BB30 is that preload should just bottom out the step on the crank shaft against the bearing. It should be a firm stop and not actually affect the bearing.

  3. #3
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    I put all the parts back together the same way I removed them. What I ended up doing is tightening the preload nut just until it slightly affects the spinning of the crank and then back it of a hair. Then tighten the set screw.

  4. #4
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    Don't know if you saw this:
    Installation and Mainteinance of FSA BB30 MTB Crankset - FULL SPEED AHEAD VIDEO CHANNEL
    Installation and Mainteinance of FSA BB30 MTB Crankset

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