or corresponding elements are generally indicated by same reference numerals turning now to the drawing and in particular to fig1 there is shown a sectional illustration of a machine tool in the form of an exemplified multiple spindle machine having incorporated six electric machines in an arrangement according to the present invention for the sake of simplicity the electric machines will be described hereinafter only in connection with those parts that are necessary for the understanding of the present invention it will be appreciated by persons skilled in the art that the electric machines must contain much mechanical apparatus which does not appear in the foregoing figures however this apparatus like much other necessary apparatus is not part of the invention and has been omitted from the figures for the sake of simplicity the electric machines have a common stator 10 in the form of a stack of single piece laminations 1 although not shown in the drawing the stator 10 may also be made of composite materials or by a combination of laminated parts and composite material examples of composite materials include materials based on iron and capable to guide the magnetic field without encountering excessive eddy current losses metal powder being useable here include ferrous alloys copper nickel etc the laminations i are formed with punchings or cutouts here six and generally designated by reference numeral 11 for defining stator portions and accommodating rotors 2 at formation of.