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-   -   Threaded BB Bearings gone after 2k miles (https://www.bikeforums.net/bicycle-mechanics/1208995-threaded-bb-bearings-gone-after-2k-miles.html)

alcjphil 07-31-20 08:58 PM


Originally Posted by mbusky (Post 21617506)
Case closed bearing replaced no charge. Manufacturer defect in installation of BB. The BB is a Shimano Hollowtech II MTB BB not the spec Octo that they have on line. Thank you for the responces and the humor due to auto spell check and my lack of proofreading. Enjoy the weekend!

Good to know that your problem was dealt with. Hope that this will be a long term solution

RowdyTI 07-31-20 11:42 PM

See this:

It sounds like the preload was too high, which will destroy bearings much sooner.

cpach 08-01-20 01:00 AM

If you have poor service life in the future ask to see if you can have the bottom bracket shell faced and chased. External bearing BBs are relatively sensitive to bearing shells that are out of alignment with each other.

fietsbob 08-01-20 10:28 AM

NB: there is always the clause : "specifications subject to change without notice" .. (you may have skipped over it)


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