QBL

This 51311 bearing is a Single direction thrust bearing with a flat housing locating washer. The bearing's dimensions are 55x105x35.51311Single Direction Thrust BearingBore Size - 55mm

This 53311 bearing is a Single direction thrust bearing with a spherical housing locating washer. The bearing's dimensions are 55x105x42.53311Single Direction Thrust Bearing with Sphered Housing WasherBore Size - 55mm