Those bearing races are interesting - and a little confusing. Many questions come to mind. I cannot visualize how the bearing will work in the complete assembly. How will be balls be retained? How will the grease be retained?
I just re-packed the hubs on my utility trailer this morning, so the conventional arrangement of hub bearings is fresh in my mind. This isn't the only form of angular contact bearing, but it is the most common. The angular contact bearings with ball bearings that I've seen and used (aerospace parts) tend to have very thick races and wiper seals.
How will your bearing deal with distortion of the 1mm sheet?