The Rexnord ZF-5215 is a Flanged Mount Bearing made of durable cast iron material. It has a Locking Collar O.D. of 4 1/16 inches and a Length Through Bore of 4.875 inches. The bearing features a grease fitting size of 1/8 NPT and a Bolt Size of 3/4 inches. With an overall width of 4 7/8 inches, this bearing is designed for industrial automation and motion control applications, providing reliable mechanical power transmission.