4 BOLT FLANGE BEARING, BACK SIDE TO CENTER WIDTH 0.827 IN, BEARING INSERT MATERIAL ALLOY STEEL, BEARING INSERT TYPE RADIAL BALL, BORE DIAMETER 1 7/16 IN, BORE TYPE CYLINDRICAL, CENTER HEIGHT 2 5/16 IN, CLOSURE SINGLE SEALED, EXPANSION TYPE FIXED, FOR ENVIRONMENT HIGHLY DUSTY AND DIRTY, HOUSING MATERIAL CAST IRON, HOUSING TYPE SQUARE, INCLUDED BEARING WJB HC207-23 INSERT BEARING, LUBRICANT MATERIAL CHEVRON SRI 2, NLGI #2 EQUIVALENT, MAXIMUM SPEED