Outer ring steel, sae 1018 or 1020, inner liner babbit, qq-t-390, grade 2, 6.512 in. Min, 6.515 in. Max liner bore dia, two 0.125 in. W circular grooves in bore, 0.062 in. Deep, 0.125 in. Between grooves, one outside corner chamfered 45.0 degrees by 0.032 in., 7.379 in. Od, 0.500 in. Thk