Abstract: The invention relates to an electrically powered tool for fastening elements and comprising a moving shuttle (10) connected to a driver (13), and an actuator motor having at least two electromagnetic yoke assemblies (8, 9), cooperating with said shuttle (10) which is arranged to be displaced in relation to said yoke assemblies (8, 9), wherein each yoke assembly (8, 9) has electric coils (15) arranged for generating a magnetic field through the shuttle (10), and a control unit which controls the current in the coils (15) to generate a magnetic field so that a force is generated for displacing said shuttle (10). According to the invention, the yoke assemblies (8, 9) are arranged for generating a magnetic field which is directed generally perpendicular to the direction of movement of said shuttle (10).