HC213-40 2-1/2" Bearing Insert - Eccentric Collar - MountedHC213 40 Bearing Insert with Collar Eccentric Locking, 2 1 2" ID, Standard Duty Ball Bearing The HC213 40 is a heavy duty bearing insert with a 2 1 2" inner diameter and an eccentric locking collar. Its made for pillow blocks and flange housings in tough machinery environments. It includes a wide inner ring, spherical outer surface, and R seal for solid protection. 2 1 2" shaft diameter Includes eccentric locking collar for secure fit Wide inner ring