Hello all, I am currently involved in a diagnostic project for an induction motor with suspected rotor stator contact. all critical dimensions have been checked but the question has been raised by none electrical observers: Does the location of the rotor bars effect the magnetic center line? The explanation that has been given why it doesn't is as follows: "A three-phase induction motor has a stator winding which is supplied by a 3 phase alternating voltage and has balanced 3 phase currents in the winding cable. The current produces an mmf (magnetomotive force) that creates a rotating field of constant magnitude. This field causes the shaft to rotate at synchronous speed. The rotating magnetic field has a constant magnitude but the axis of direction rotates in space. The rotating field caused by the current in the stator winding cable induces emf in the rotor by a transformer action. The rotor is a closed set of conductors consisting of copper rotor bars that are brazed or electrically welded to the copper short circuiting end rings at both ends. This results in an emfs in the rotor causing a rotor current. The interaction of the rotor and stator currents cause a rotating magnetic field producing forces/torque seen on the rotor bars causing the shaft to rotate. The rotor bars key function is to act as a connector between the two short circuit rings similar to two pieces of wire connected together to form a circuit. Conclusion: 1) Position of rotor bars not important since it’s a current carrying conductor. 2) The bars must be brazed properly to withstand rated amps. " I remain unconvinced that the position of the rotor bars will not effect the rotation of the shaft. can someone please either confirm or deny this explanation. one thing to add is that this is a 350kW machine. Thank you, A concerned Engineer.