Abstract: A motor-driven nut-grinding apparatus is constructed to effectively operate at much lower than conventional speeds and has a front-mounted, unitary casting part providing a back mounting plate wall, a feed chute, a forwardly extending feed and grinding hub, and a front mounting for a stationary grinding disc. The hub has an open-end bore that journals a motor-driven auger shaft on which a rotating grinding disc is mounted to cooperate and define a final grinding chamber with the stationary grinding plate. A back portion of the auger shaft has a cylindrical, reduced diameter portion that with at least about one and a half of auger convolution turns, is exposed through a window in the hub and an open mouth of the chute to provide a non-jamming receiving area for nut kernels from a downwardly converging mouth portion of the feed chute.