The 634ZZ1MC3 NS7 ISC is a high-performance miniature ball bearing featuring two metal shields for enhanced protection against contaminants. With a bore size of 4mm and an outer diameter of 13mm, this bearing is designed for applications requiring compact dimensions and reliable operation. It is constructed from high-quality steel, ensuring durability and longevity. The bearing operates efficiently under a wide range of temperatures and is suitable for various industrial applications, including robotics and precision machinery.