The R2-5-ZZ is a precision-engineered, inch-series miniature deep groove ball bearing designed for applications where rotational stability and radial clearance control are paramount. With a 1/8" bore diameter, this model is slightly more robust than the ultra-micro series, offering a balanced power-to-size ratio. It is equipped with dual metallic shields (ZZ) that provide a physical barrier against workplace debris while maintaining a non-contact interface with the inner ring to prevent friction-induced heat. This specialized construction ensures the R2-5-ZZ remains the preferred choice for high-speed micro-motors and sensitive transmission systems.