A milling tool for prosthetic surgery operations comprising a cap body, hollow inside, at least a cutting profile, associated with said cap body, and an attachment support positioned and constrained with respect to the cap body and by means of which said cap body can be selectively associated with a relative manual or automatic manipulator. The scrub radius less than or equal to zero can be achieved by outwardly displacing the king pin axis, which is defined by the upper and lower pivotal joints of the upper and lower A-arms of the front suspension. A cover member can provide a common passageway connected to the coin hoppers. A common signal correlator generates a common in-phase correlation signal from the satellite signals received from all the antenna units. A toggle switch overrides the onoff switch on the handle, useful when the work piece is fed from behind. At least one of the bearings has a bearing bush which is provided with an external thread and which can therefore be screwed into an internal thread of a side part.