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Old 07-02-11, 08:06 PM   #1
JunkYardBike
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Campagnolo hub bearing race loose in hub

I've read a few threads regarding hub bearing cup replacement, both with references to the possibility of widening the 'seating collar' (for lack of a better term) if done roughly or too frequently.

Well, I have a nice Record HF hub, and one of the bearing cups spins inside the hub. It doesn't fall out or anything...just spins. I can't pry it out with my finger either. I measured the distance from the outside of the collar to lip of the bearing cup, and it's equal on both sides.

Should I try to gently hammer the spinning race down more? Or is the thing shot?

I'm also trying to conceptualize what might happen with a cup that spins. How would it affect the rotation of the axle?
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Old 07-02-11, 08:22 PM   #2
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Campagnolo had darn good tolerance stacks, so this is rare. We only had ONE hub that did that during the time I worked at bike shops, and a Campagnolo Distributor made good on it, (long gone Apollo TBS Distributors, wonder what ever happened to THIER inventory... they had Everything Campagnolo, high priced, but all small spares, all the time) but enough on the digressing.

The race Will "progress" slowly, and that will wear things more. So, I would carefully and squarely press it out or extract it, I have seen machinist brewed tools to do both, and then replace it with a new one (not worth it, at least to buy one) Or, clean the contact side of the race and bore of the hub shell with the Loctite goo designed for this purpose. I did this to an alternator end housing long ago and no problemo afterward.
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Old 07-02-11, 08:36 PM   #3
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Grazie! Loctite it is!

Now where's Michael Angelo with his patented puller and setter?
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Old 07-02-11, 10:11 PM   #4
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Make sure you get the gap filling loctite. This stuff does work like a charm for this application, I've used it.
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Old 07-03-11, 06:43 AM   #5
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When you have the cup out, you might want to look it over for the <c> mark that confirms it's true Campagnolo origin.
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