The Nachi 5304ZZ is a double-row angular contact ball bearing designed for high-performance applications, featuring a 20 mm bore, 52 mm outer diameter, and 22.2 mm width for precise fitment in demanding environments. This bearing offers a dynamic load rating of 21,700 N and a static load rating of 13,300 N, ensuring reliable operation under both radial and axial loads. Double metal shields (ZZ) provide effective protection against contaminants, while the angular contact design supports combined loads and high-speed rotation. Manufactured in Japan, the 5304ZZ is ideal for industrial machinery, automotive systems, and equipment requiring durability, precision, and long service life.