The NACHI 5211ZZ is a double-row angular contact ball bearing featuring a 55 mm bore diameter, 100 mm outer diameter, and 33.3 mm width. It has a 20-degree contact angle and is double shielded (ZZ) for protection against contaminants. Constructed with a pressed steel cage, it supports a dynamic load capacity of 57,500 N and a static load capacity of 50,500 N, suitable for high-speed applications up to 4500 rpm with grease lubrication. This bearing is designed for radial and axial loads, offering durability and precision in demanding industrial environments. Its robust steel construction ensures long service life and reliable performance.