Abstract: A commutator placing machine includes means for feeding armatures to a loading position where they are indexed to a preset angular position, means for feeding commutators to a loading position, and means for orienting the commutators prior to installation onto the armature shaft. An index slide or shuttle is provided to impart a rotational component of force to ensure that the commutator is properly positioned with respect to a locator tab. A proximity sensor indicates when the commutator is in its proper position, and if the commutator is not properly positioned, then the index slide is first retracted and then again extended in an attempt to seat the commutator properly. Guide rails are provided to ensure that the commutator maintains its orientation from its loading position to its final position on the armature shaft.