The 620310ZZE Nachi shielded deep groove ball bearing features a 5/8 inch (0.625") inner diameter, 40mm outer diameter, and 12mm width, designed with C3 radial clearance for enhanced performance under higher loads and speeds. Manufactured in Japan, this bearing offers reliable shielding to protect against contaminants while maintaining smooth rotation. Its precise dimensions and robust construction make it suitable for various industrial applications requiring durability and consistent operation. The C3 clearance ensures optimal internal clearance for thermal expansion and high-speed conditions, making it ideal for demanding mechanical environments.