The PTI SA211 is a genuine bearing insert featuring a 55mm bore diameter and a 100mm spherical outer diameter. This wide inner ring bearing insert utilizes a reliable set screw locking mechanism for secure shaft attachment. Constructed from high carbon chrome steel, it is designed for durability and includes a grease fitting for effective lubrication. With an overall width of 55.6mm and an outer ring width of 30.2mm, it provides robust performance for various machinery.