Abstract: A lamination for a stator core of an electric machine includes an outer periphery, and an inner periphery that is characterized by a plurality of teeth. The teeth are radially arranged so as to define slots therebetween. The lamination further defines an opening that is located between the outer periphery and the inner periphery. The lamination further defines a plurality of projections laterally extending into the opening, wherein the projections are configured to increase a surface area of the lamination located adjacent to the opening and increase a heat transfer capacity of the lamination. In another aspect of the present disclosure, such projections may also be located on the outer periphery of the lamination to increase the heat transfer capacity of the lamination.