Abstract: An improved hammer mill hammer constructed by forming a groove in an edge of the grinding end of a hammer for receiving hard facing material and placing hard facing in the groove.

Abstract: An improved hammer mill hammer constructed by forming a groove in an edge of the grinding end of a hammer for receiving hard facing material and placing hard facing in the groove.

Abstract: A method of avoiding hammer rod-hole deformation in a hammer mill. Conventional hammers are fitted with a bearing structure that reduces wear while permitting the hammer to pivot about multiple axes. An optional, integral spacer provides spacing between adjacent hammers.

Abstract: A method of avoiding hammer rod-hole deformation in a hammer mill. Conventional hammers are fitted with a bearing structure that reduces wear while permitting the hammer to pivot about multiple axes. An optional, integral spacer provides spacing between adjacent hammers.

Abstract: An apparatus for mounting hammers to a hammer mill having at least one hammer provided for attachment to a hammer mill, the at least one hammer having an opening disposed in one end thereof corresponding to a pivot axis, the opening being of a first diameter. A sleeve having a central opening therein is operatively attached to the hammer mill, the sleeve being disposed in the opening in the one end of the at least one hammer. The sleeve has a first cylindrical outer surface with a second diameter, the second diameter being only slightly smaller than the first diameter of the opening in one end of the at least one hammer. The sleeve has a second cylindrical outer surface with a third diameter, the third diameter being larger than said second diameter. A shoulder on the sleeve extends from the second cylindrical outer surface to the third cylindrical outer surface. An annular groove is disposed in the first cylindrical outer surface.