How To Repair Electric Motor Commutator

Electric materials has the capabilities to replace mica v rings or obvious electrical problems within a commutator all in house.

How to repair electric motor commutator.

Conduct commutator bar check by setting the voltmeter to the rx 1 scale and then touching the probes of the meter to adjacent bars on the commutator gradually moving around the entire perimeter of commutator. A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. Two or more electrical contacts called brushes made of a soft conductive material. Commutator and brushes the diagram at the right shows how the commutator and brushes work together to let current flow to the electromagnet and also to flip the direction that the electrons are flowing at just the right moment.

Capacitor start electric motors use a starting coil and a capacitor to create an advancing magnetic field in the stator outer frame of the motor with its coils. This advancing magnetic field gives the rotor something to chase causing the rotor to spin. We work with v bounded commutators glass banded commutators and external internal shrink ring commutators. The readings should be the same on all bar to bar checks.

The commutator and the brushes. This article describes a c electrical motor troubleshooting. Small electric motor repair by josh weber updated july 21 2017. Electric motor test repair guide.