Abstract: The loader is adapted for feeding workpieces having a basic hole onto the spindles of a rotor-type automatic machine-tool during operation of the rotor carrying said spindles. The loader has a feed chute containing oriented workpieces, which, when in the machine loading position, makes up an angle with the axis of the spindle rotation so that the spindle itself is adapted, during rotor rotation, to effect a frictional catching of a workpiece from the feed chute at the top point of the basic hole thereof. For positively feeding said workpiece onto the spindle, provision is made for a pusher so arranged that its butt end facing the spindle is essentially at the same level with the top portion of the feed chute.