Patent ID: 7090159

Claim:
An impact crusher comprising: an impeller table assembly including an impeller table having an outer edge portion and an inner edge portion that define an impeller surface, and a plurality of shoes arranged about the impeller surface; at least one anvil spaced from the outer edge portion of the impeller table; a center feed disk including a peripheral edge portion, a first face, an opposing, second face, a central bore extending through the first and second faces, and first and second countersunk pockets provided about the central bore in the first and second faces respectively; a fastener mounting the center feed disk radially inward of the inner edge portion of the impeller table with the first face being exposed, said fastener including a head recessed in the first countersunk pocket, and a shaft extending through the central bore wherein, after the first face develops a wear region resulting from material flow, said fastener can be removed, the center feed disk inverted, and then the center feed disk re-mounted with the second face being exposed, whereby an overall service life of the center feed disk is increased.