This is due to uneven current distribution or poor armature winding. Burning of the edges of the commutator bar indicates improper brush alignment, poor inter-pole connections (if applicable), the wrong grade of brushes, or even low spring pressure. You may also see copper drag occurring, which looks like you have greased the copper of the commutator with the brushes. This is due to excessive heat softening the surface of the commutator. This is an indicator of a potentially more serious problem.
The carbon brushes of a DC motor will wear out over time and will eventually need to be replaced. Worn brushes can cause armature power loss, armature winding damage, and commutator damage. Premature wear of motor brushes can be the result of improper installation, as well as winding problems, voltage surges, overload, and sparking. An additional complication of worn carbon brushes is the formation of carbon dust, which can lead to grounding of the field coil or armature winding.
DC Motor Repair Time
Let's face it, there are a lot of things that can go wrong with a DC motor, but most of them involve fairly simple repairs, like replacing a bearing or simply replacing a brush. These repairs won't take any longer than more complex repairs, like rewinding the armature or field coil. However, keep in mind that a quick repair isn't always a good repair. A quality DC m sweden telegram dataotor repair shop will work on not only what's wrong with your motor, but what caused it to fail in the first place. This takes time, as does a redesign for improved performance and rigorous quality testing. The extra time spent on the repair will in turn result in significantly less downtime and improved motor performance.
Conclusion
Are you looking for DC motor repair services? Here at HECO, we offer high-quality, EASA-accredited repair solutions that will create a DC motor with longer MTBF, lower maintenance and repair costs, and significantly improved performance.