I have the same problem and ran across your message when searching for an answer. I am told you can buy the bearings from the Hotpoint Spares dept. TEL 01733 568989.
I foresee a problem removing the drive belt pulley from the bearing/centre of the drum prior to getting at the bearings, perhaps this will require the use of pullers?
Keep in touch and we'll see if we can cure both our machines?
Regards
Moogy, January 2005