i bought a ball screw from ebay a while back. I'm trying to locate some bearings for the motor driven-side bearing block and free end block. I'm finding some SKF angulare contact bearing on ebay, however the inside diameter is too large, and the SKF site doesn't even list bearings this small...

Heres a drawing of the screw end...


I basically need a couple of 8mm ID (THAT DIA 7.00mm from the picture is really 8mm) bearings no more than say 6-8mm wide so they can fit on the 17.5mm sleeve in the above pic.

Any recommendations where to look?