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
http://i1349.photobucket.com/albums/...psimyu1qym.jpg

then turned down the stub
http://i1349.photobucket.com/albums/...psx1eydqui.jpg

then parted off from the chunk
http://i1349.photobucket.com/albums/...pscegp5ieu.jpg

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
http://i1349.photobucket.com/albums/...pswxm1nhdc.jpg

pressing the new bearing in
http://i1349.photobucket.com/albums/...psr6bewm7z.jpg

finished job
http://i1349.photobucket.com/albums/...psud6du8dn.jpg

collection of parts (inc. new spacers and old plastic ones)
http://i1349.photobucket.com/albums/...psfdkoivjl.jpg

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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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:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="http://www.homemadetools.net/homemade-outboard-bb-press"> <img src="/uploads/160785/homemade-outboard-bb-press.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="http://www.homemadetools.net/homemade-outboard-bb-press">Outboard BB Press</a> <span> by <a href="http://www.homemadetools.net/builder/mattthemuppet_3">mattthemuppet</a></span> </div> <div class="tags">tags: <a href='http://www.homemadetools.net/tag/press'>press</a>, <a href='http://www.homemadetools.net/tag/bearing'>bearing</a>, <a href='http://www.homemadetools.net/tag/bicycle'>bicycle</a> </div> </div> </div> </div>
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