Front loader making loud noise with spin cycle

It may be something that was in the wash and fell thru the holes in the inner drum. Check all the plastic agitators and make sure they are all secure and an attach bolt has not backed out of one and rubbing the outer tub. It will wear a hole in it fast if it is.
Usually when the bearings go bad, it gets very loud on the spin cycle, like a loud roar and sometimes clothes will have rust or grease stains on them.
I just replaced my tub bearings on my Frigidare and spent about $60. They are all pretty much the same. On mine they only list the complete rear outer tub assembly with bearings, but you can knock the old bearings and seal out and match them up at a bearing supply house or you can buy online. Online seems much cheaper. If you buy bearings, make sure you get ones with a -2rs on the end of the part number. ex. 6308-2rs. They are sealed and hold up much better in water environment.
I would give it a try, the junk man doesn't care if it comes in pieces or one big piece.

There are a couple online articles that can probably help you. Do a google search for 'washer rear tub bearings"

i have the same problem as urs. i open the whole drum myself and replaced the rear bearing. but the actual problem is the bearing housing is loose in plastic drum. so only drum needs to be replaced.