Abstract: A pole core with pole lips serves for fixing a field winding in the pole housing of a direct current motor. The pole core has a central pole body mountable on an inner side of the pole housing. The pole lips are formed of one piece with the central pole body and are resiliently and springily connected to the central pole body, so that the field coil can be pressed against the pole housing in an elastic springy manner without additional spring elements, so that no damage occurs to the insulating coat of the coil.

Abstract: A coating powder for relatively slideable parts consisting essentially of a mixture of about 80%-60% graphite and about 20%-40% of an unhardened epoxide-containing epoxy resin/hardener mixture. The coating powder is made by admixing an epoxy resin and a hardener to a uniform mixture at an elevated temperature at which the epoxy resin does not react with the hardener while in the molten state. The unhardened epoxy resin/hardener mixture is then ground into coarse particles and admixed with coarse particles of graphite and the mixture ground to a fine powder. The invention also includes machinery having at least one self-lubricated surface coated with said powder which has been heated after application to the surface to form a cross-linked thermoset polymer binding said graphite.