Attributes . 4 Bolt Round Flange Cartridge; 2-3/16" Bore; 5.9" Bolt Circle; 4.2" Bolt Spacing; 1 Piece Solid; Stepped Sleeve Mount; Cast Iron; Spherical Roller Bearing; 3-1/8" Length Thru Bore; Relubricatable; Labyrinth Seals . Names