Method for inserting a winding comprising upper and lower half-phases (10s, 10i),into notches formed on the inner radial face of the bundle of plates of a stator of axis (X-X'), comprising the following steps: a/ production of the upper and lower half-phases (10s, 10i), each comprising a super position of star-configuration turns each having a plurality of lobes protruding outward from the turn linked by radially inner parts, the turns of the upper half-phase being offset angularly in relation to the turns of the lower half-phase, the upper half-phase being arranged above the lower half-phase, b/ transfer of the upper and lower half-phases (10s, 10i) onto an insertion tool, c/ transfer of the insertion tool under a bottom axial face of the bundle of plates of the stator, the star-configuration turns being centred on the axis (X-X') of the stator and extending in planes at right angles to this axis or close to the right angle, d/ insertion of the upper and lower half-phases (10s, 10i) into the notches by progressive twisting of the lobes and tilting of these lobes in a direction parallel to the axis (X-X'), until the turns of the upper half-phase fill the corresponding notches over all the length of these notches, e/ tilting of the radially inner parts of the turns of the upper half-phase onto a top axial face of the bundle of plates, to form the upper lead-out wire of the stator, f/ continuation of the insertion of turns of the lower half-phase by twisting and tilting until the turns of the lower half-phase fill the corresponding notches over all the length of these notches, g/ tilting of the radially inner parts of the turns of the lower half-phase onto the top axial face, characterized in that the tilting of the radially inner parts of the turns of the upper half-phase onto the top axial face of the bundle of plates in the step e/ is performed using bedding members radially pulling these said parts from the inside to the outside. a/ production of the upper and lower half-phases (10s, 10i), each comprising a super position of star-configuration turns each having a plurality of lobes protruding outward from the turn linked by radially inner parts, the turns of the upper half-phase being offset angularly in relation to the turns of the lower half-phase, the upper half-phase being arranged above the lower half-phase, b/ transfer of the upper and lower half-phases (10s, 10i) onto an insertion tool, c/ transfer of the insertion tool under a bottom axial face of the bundle of plates of the stator, the star-configuration turns being centred on the axis (X-X') of the stator and extending in planes at right angles to this axis or close to the right angle, d/ insertion of the upper and lower half-phases (10s, 10i) into the notches by progressive twisting of the lobes and tilting of these lobes in a direction parallel to the axis (X-X'), until the turns of the upper half-phase fill the corresponding notches over all the length of these notches, e/ tilting of the radially inner parts of the turns of the upper half-phase onto a top axial face of the bundle of plates, to form the upper lead-out wire of the stator, f/ continuation of the insertion of turns of the lower half-phase by twisting and tilting until the turns of the lower half-phase fill the corresponding notches over all the length of these notches, g/ tilting of the radially inner parts of the turns of the lower half-phase onto the top axial face,