Yes I looked for a while for 8mm angular contact bearings but only found one supplier, on eBay in america and not cheap. That was for single row, couldn't find any double row that size.

http://www.ebay.co.uk/itm/708A-8mm-S...0#ht_560wt_905

I wouldn't expect normal bearings to last long if you're drilling ... but nobody really cares as they're so cheap.

Also you can get ER16 collet chucks with 8mm shank:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...ht_4690wt_1080

Quote Originally Posted by njhussey View Post
Saying that I've skate bearings coming out of my ears as I'm planning on using them as the linear bearings on all my axis ;)
That's slightly worrying - depends how you go about it.

Quote Originally Posted by njhussey View Post
...making the bearing housing, I looked at our lathe this morning and the tooling is crap as it's only used to take the raised face off flanges etc...
Poor workman blames his tools :whistling: