Maybe it was a dream but isn’t there a retaining compound for already assembled parts? I guess it was thin and slipped between shaft n bearing.
Loctite 290 wicking grade is what you’re looking for.
While I haven’t had issues with it, I only use it if the beers/herbs make loctite an afterthought.
You’ll have to look up specs to see if its proper for shaft adhesion, off the top of my head I can only confirm its good for threads
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JB weld 
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