Rexnord PB22451FH Pillow Block Roller Bearing

Rexnord Link Belt PB22451FH is a cast-iron, solid-housed pillow block bearing designed for 3-3/16 in shafts. It houses a Link-Belt spherical roller bearing inside and uses a four-bolt mounting pattern for rigid installation, with a single setscrew locking collar to secure the shaft. A clearance seal helps keep contamination out while preserving lubrication in the housing. The base-to-centerline height measures 3-3/4 in, and the overall configuration is tailored for conveyor drives and other heavy-duty machinery where robust, accurately supported rotation is essential. The PB22451FH designation identifies a specific member of Rexnord’s Link-Belt pillow block family, combining a precise bore with a proven spherical roller bearing arrangement to handle substantial radial loads and misalignment tolerance in demanding industrial applications. This unit is intended to be mounted to a frame or base, aligning the shaft with high stiffness and minimizing deflection during operation.