If you want a fully developed dedicated turntable bearing complete with housing and mounting capability, try a search on Lenco Heaven. There are two guys, Mirko and Jeremy, that make very nice bearings suitable for use with platters other than the Lenco one. Moreover, I am sure either or both would custom make you a bearing suitable for much heavier platters, if that is your desire. I am the satisfied user of a Jeremy Superbearing in my Lenco.
