I've been looking for the smallest and thinnest sealed bearings I could find and they fit the bill perfectly. I've never seen a smaller camp. I haven't tested them extensively, but I haven't found a reason to put them into production.
π§ High-Quality TIMKEN 6203 2RSC3 6203 2RS Bearing - Size: 17X40X12mm
4 Review
Bearing 608- ZZ1MC3E (8x22x7) NSK//80018
4 Review
π Wheels Manufacturing Ball Retainer Bag: Convenient Storage and Protection for Your Ball Retainers
6 Review
Enhanced Performance Sydien SCS12UU Bearing Bushing Diameter for Precision Machinery
4 Review