DIY Bearing availability

You might also check an industrial components supply outlet like Graingers. I think they carry an assortment of bearings:

http://www.grainger.com/Grainger/bearings/power-transmission/ecatalog/N-aoj?xi=xi

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.

Here's one:
http://diyhifisupply.com/bearing

Thanks guys. The Grainger and DIY Hifi bearings are totally unsuitable for what I have in mind. The bearing on LH is closer, I'll have to look into it. The Chinese stuff is quite comical.

I dont know what is comical about this

http://www.ebay.com/itm/180817086225?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

Looks pretty impressive to me. but should be for the cost.