The R2A-ZZ is a specialized imperial miniature ball bearing designed for applications that require a small 1/8-inch bore but demand higher load-bearing stability than standard micro-bearings. Featuring an exceptionally robust 1/2-inch outer diameter relative to its bore size, the R2A-ZZ offers enhanced structural rigidity and radial strength. The double-shielded ("ZZ") configuration utilizes two non-contact metal plates to retain high-performance lubricant while acting as a barrier against dust and environmental contaminants, making it a reliable choice for high-speed, maintenance-free operation.