Abstract: A spindle rotor is adapted (1) for use in a spindle of a textile thread processing machine, such as a two-for-one twister, in which the running thread being processed passes through an axially and radially extending thread passageway in the spindle and formed a rotating balloon around the spindle and includes means for supplying a flow of thread conditioning medium, fibrous material or other medium adapted to flow in a generally axial direction through the spindle and (2) to receive, guide and enhance the flow while performing the thread processing functions. The spindle rotor includes a hub member for rotatably mounting the spindle rotor in the machine spindle, a plurality of spaced-apart guide blades attached to the hub member and extending radially outwardly therefrom in a spoke-like manner for receiving the thread conditioning medium, and a radially extending thread passageway through the hub and one of the guide blades for receiving the running thread being processed.