Heavy Duty 1-1/4" x 2-1/8" x 5/8" Flanged Ball Bearing F4068F4068 Flanged Ball Bearing 1. 25" ID Full Complement Heavy Duty No Cage The F4068 is a heavy duty flanged ball bearing built with a full complement of 1 4" balls and no cage, maximizing load capacity in tight rotating systems. With a 1 1 4" bore and built in flange, this bearing is made for rugged use in agricultural, industrial, and mechanical assemblies where alignment and strength are key. Bore diameter: 1 1 4" (1. 25") Outer diameter: 2 1 8" (2.