Which part of an electric motor is likely to wear out most frequently?

The brushes are a critical component in many types of electric motors, particularly in commutator motors. They make contact with the rotating parts of the motor to conduct electricity from the power source to the armature windings. Over time, due to the friction generated by this contact, brushes can wear down, decreasing their ability to maintain proper electrical connection.

As brushes degrade, they can lead to performance issues such as sparking, increased electrical resistance, and eventual motor failure if not replaced. While other parts like the stator, rotator, and windings are designed for durability, the brushes are subjected to constant wear and tear due to their sliding contact with rotating components. Regular maintenance often includes checking and replacing brushes to ensure optimal motor functionality.