Abstract: A bore slotting machine for cutting radially spaced longitudinal slots in sleeves for automotive power steering units comprising a cutting face adapted to operate with a bore of a component being worked; a motorized drive adapted to impart reciprocating motion to the cutting face; a positional feedback device associated with the cutting face and adapted to communicate with a computer; a chuck adapted to hold a component being worked at a location adjacent the cutting face and being supported for indexible rotational movement about a Y axis substantially parallel to that of the bore in the component being worked; a first shuttle carriage carrying the workholding device such shuttle being adapted for linear motion perpendicular to the bore axis of the component under the influence of a first servo drive; a second shuttle carriage adapted to carry the cutting face and associated motorized drive such that movement of the second carriage achieves linear reversible relative motion between the component being worked