Fremgangsmåde til centrering af en elektromotors rotor i dens stator.

摘要

The invention relates to a method for centering the rotor of an electric motor relative to the stator thereof so that a uniform, circumferentially extending air gap is achieved. Spacer elements are used in the manufacture or repair of a motor which are inserted into some of the winding grooves of the stator, these elements each having a head which projects beyond the groove to an extent equal to the width of the air gap. The elements are made of a heat shrinkable material and heat generated by motor current causes the heads to be withdrawn into the grooves as a result of the shrinkage of the material.