How can I secure a bearing that is constantly coming out of it's housing (Front Y axis support)?
Never heard of that problem before, but I think you should secure it in place with threadlocker.
When did you get your printer? I’d suggest contacting support.
A little of Loctite 609
http://www.henkelna.com/product-search-1554.htm?nodeid=8797928194049
Best Regards
Martin