Some have play some don't. Some just drone driving, noise getting worse when turning and "loading" the faylty side. Usual reason is that water gets in the bearing making inner parts rust and water does wear marks on bearing components. Have had two with noise and no play, both have had water and rust inside. Probably due high pressure wash or something. Also the inside of bearing is poorly covered.
Having replaced now four rw bearings (two water ruined, one worn, one pattern fitted which lasted 3 months) have found out following:
- it is BEST to remove the whole arm from the start. You will have better access to it and in case old one is really stuck you can put it in a press
- get some M12x1,5 threaded bars, 2x500 mm pieces will do. These are used to pull out the hub.
- get a pipe which inner dia is a bit bigger than bearing outer dia. Also some very thick and strong washers/steel plate is needed
- do not everm, never, in any circumstances use any other bearing than a known good wordwide brands. I have learned I will ever put anything else than FAG in. Patterns have play from new, seems the inner races contact and therefore remains the play