Try SKF bearings. They are situated at penrith (western nsw) and do all types and sizes, they can get what ever you need as they are a massive bearing distributor company. Plus they will post where ever you need. They do heaps of other stuff like loctite's, sprays, lubes and heaps more. I'm not quite sure of the email address but you should find it if you google 'SKF bearings'. If you can't find them PM me and i will find the address for you.
Hope this helps