Abstract: The present invention embodies an insert for attachment to a hammer of a size reducing machine for use in size reducing waste material, comprising a body with a centrally located mounting hole to allow for attachment of the insert to the hammer. The body also includes a bullet shaped tip distally located in relation to the body, wherein the tip can size reduce waste material on impact.

Abstract: A rotor assembly for use with size reducing machines having a drive motor comprising a central shaft with a drive end for securement to the drive motor and an opposing outboard end. The rotor assembly also comprises a webbing engaged with the central shaft for supporting the rotor assembly, a rotor casing substantially seals the webbing, and a plurality of sockets secure to a plurality of casing throughbores. The webbing comprises a drive end plate secured to the central shaft with a bushing, an outboard end plate secured to the central shaft with a bushing, and a plurality of web support sockets aligned in two transversely aligned rows. The web socket plates each comprise two socket receiver channels for alignment with the sockets. Finally, a plurality of hammers releasably secure to the plurality of sockets.

Abstract: A rotor assembly for use with size reducing machines having a drive motor comprising a central shaft with a drive end for securement to the drive motor and an opposing outboard end. The rotor assembly also comprises a webbing engaged with the central shaft for supporting the rotor assembly, a rotor casing substantially seals the webbing, and a plurality of sockets secure to a plurality of casing throughbores. The webbing comprises a drive end plate secured to the central shaft with a bushing, an outboard end plate secured to the central shaft with a bushing, and a plurality of web socket supports aligned in two transversely aligned rows. The web socket plates each comprise two socket receiver channels for alignment with the sockets. Finally, a plurality of hammers releasably secure to the plurality of sockets.