Attributes . 4 Bolt Round Flange Cartridge; 1-15/16" Bore; 5.4" Bolt Circle; 3.8" Bolt Spacing; 1 Piece Solid; Concentric Collar Mount; Cast Iron; Spherical Roller Bearing; 2-7/8" Length Thru Bore; Relubricatable; Labyrinth Seals . Names