The NMB DDR1640ZZA1P25LY121 Miniature Radial Ball Bearing is a compact solution for precision applications. With dimensions of 4mm inner diameter, 10mm outer diameter, and 4mm width, this bearing is perfect for small machinery and electronic devices. It features high-quality steel construction for durability and low friction, ensuring efficient performance. This bearing is designed to operate smoothly at high speeds and is compliant with ISO standards, making it suitable for various applications including robotics and medical devices. Its miniature size does not compromise on strength or reliability.