WORKING SHAFT FOR MACHINES FOR EXTRUDING, KNEADING, DISPERSING, MIXING OR HOMOGENIZING, PARTICULARLY PLASTIC MATERIALS

Processing shaft for machines for extruding or the like, comprising a core shaft having at its front end an axial stop member for slip-on processing members arranged non-rotationally on the core shaft, further comprising a spacer sleeve supporting the processing members rearwardly, and arranged non-rotationally at the rear end area of the core shaft a slip-on coupling sleeve on whose external thread a clamp nut is screwed, and also comprising a clamping force transmitting member tightenable rearwardly against a stop member of the core shaft by the clamp nut. To enable tightening of the processing members in an axial direction, also in the case that a processing shaft has been installed in a machine, the clamping force transmitting member is in the form of a transverse bolt which is inserted into a transverse channel of the core shaft forming the stop member, and, in addition, the coupling sleeve is supported in a forward direction via the spacer sleeve and the processing members on the front stop member of the core shaft.