The Nachi 5211-2NS is a double-row angular contact ball bearing designed for high-performance applications. It features an inner diameter of 55mm, an outer diameter of 100mm, and a width of 33.3mm. The bearing is double-sealed, providing enhanced protection against contaminants. With a dynamic load rating of 57,500 N and a static load rating of 50,500 N, it offers robust load capacity. The contact angle is 20 degrees, and the maximum speed under grease lubrication is 4,500 RPM. This bearing is ideal for applications requiring precise angular alignment and high load-bearing capabilities.