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Thread: Shimano BB bearing replacement tools

  1. #1
    Supporting Member mattthemuppet's Avatar
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    Aug 2016
    Walla Walla, WA USA
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    mattthemuppet's Tools

    Shimano BB bearing replacement tools

    made a set of adapters to press the bearings out of Shimano outboard bottom brackets and press in off the shelf cartridge bearings. A) because I'm cheap and b) because I can

    making the doodad to press the bearings in - first trepanned a chunk of alu to make some custom spacers for the bottom bracket

    then turned down the stub

    then parted off from the chunk

    pressing out the old bearings. Used a piece of black iron tube to hold the shell and some random steel as the pusher. One of the shells needed the ID opened up to get to the back of the old bearing

    pressing the new bearing in

    finished job

    collection of parts (inc. new spacers and old plastic ones)

    the bearings spin much more freely than the old ones, even when they were new, and I got 10 decent ones (Abec 5 supposedly) off Aliexpress for $16, so I can do the bearings on my other bike and still have 3 sets left over!

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  2. The Following 3 Users Say Thank You to mattthemuppet For This Useful Post:

    DIYer (Nov 24, 2016), Jon (Nov 25, 2016), Paul Jones (Nov 25, 2016)

  3. #2
    Content Editor
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    DIYer's Avatar
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    Aug 2013
    Thanked 1,784 Times in 1,594 Posts

    Thanks mattthemuppet! We've added your Outboard BB Press to our Bicycle category,
    as well as to your builder page: mattthemuppet's Homemade Tools. Your receipt:

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