The DDL840ZZA1P25LY121 NMB Miniature Radial Ball Bearing is designed for applications where space is limited. With an inner diameter of 8mm and an outer diameter of 40mm, this bearing provides excellent performance in compact machinery. It features a double shield design to protect against dirt and moisture, enhancing its lifespan. Capable of operating at speeds up to 20,000 RPM, it is suitable for various high-speed applications. Made from high-quality materials and compliant with ISO standards, this bearing ensures reliability and efficiency in demanding environments.