Electric motor refurbishment is a technical process focused on recovering the operating conditions, reliability and service life of the equipment. In DC motors, this analysis requires special attention to the commutator, a component that works in direct contact with the carbon brushes and participates in the conduction and commutation of electric current. When the commutator shows excessive wear, an irregular surface, contact failures or loss of stability, motor performance m

DC motor sparking can be caused by worn carbon brushes, commutator wear, incorrect brush pressure, contamination, misalignment, overload or other operating problems. While slight sparking may occur during normal operation, excessive or persistent sparks can indicate unstable contact between the brushes and commutator. If the problem is not investigated, it can lead to overheating, accelerated wear, performance loss and unexpected motor downtime. Identifying the cause early he