Abstract: Electric spindle with axial force control intended for friction welding and other uses, of the type used industrially for the automated welding of metal plates or metal elements, characterized in that it incorporates, inside the body of the electric spindle, a force sensor, associated with the tool by means of an internal shaft that can move axially and which, via an electromechanical actuator, allows the real-time local adjustment of the height of the tool above the material to be welded, such as to maintain a constant, controlled force during the welding and/or machining processes. The main advantage of the invention that is presented is that the height is corrected according to the force, automatically in the electric spindle itself, with much greater precision and speed, thereby providing more uniform welding results without irregularities.