Attributes . 4 Bolt Round Flange Cartridge; 2-7/16" Bore; 6-1/2" Bolt Circle; 4.6" Bolt Spacing; 1 Piece Solid; Concentric Collar Mount; Cast Iron; Spherical Roller Bearing; 3-3/8" Length Thru Bore; Relubricatable; Labyrinth Seals . Names