Cup and cone BB o-rings
09-13-21, 09:31 PM
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Cup and cone BB o-rings
O-rings are toast. Where can I find replacements or are they unnecessary? Shimano cup and cone.
09-13-21, 11:06 PM
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Your 'local' bearing stockists? Measure them up and order.
I assume that they have just worn with age?
I assume that they have just worn with age?
09-14-21, 07:25 AM
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I've not seen that Shimano ever offered these separately as replacement parts. It's possible that a bearing supply house might have suitable replacements. Failing that, the old-school sealing was done by wrapping a piece of pipe cleaner around the bb axle adjacent to the cup.
09-14-21, 10:29 AM
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Do you clean and adjust them often as routine maintenance? Probably not really needed in that case.
Cartridge BB's are cheap once you know which works with your bike. Last a long time and when they do go bad, 18 bucks and you have a new one.
Cartridge BB's are cheap once you know which works with your bike. Last a long time and when they do go bad, 18 bucks and you have a new one.
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09-14-21, 10:16 PM
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The bike was a garage sale rescue and needed a full strip down. I ended up buying a used bottomed bracket at the bike coop and using the o-rings from that set. There is someone selling new sets on eBay for $16. I only paid $30 for the bike, so there was no way I was going to spend 50% of the bike on two pieces of rubber.
09-14-21, 11:06 PM
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09-14-21, 11:39 PM
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It is always worth remembering that just because two pieces of rubber are 50% of the bike's purchase price should not be an automatic brake on purchasing, as it is the selling price of the bike minus the total investment price that is of interest - $16 + p&p to your door minus gas and time to drive to the LBS...
