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

Sparking in DC motors is a sign that deserves attention. Although small sparks may occur under certain operating conditions, excessive sparking can indicate failures in the contact between carbon brushes and the commutator, component wear, contamination, misalignment or problems related to the motor’s operating conditions. In industrial applications, this type of failure should not be ignored. When sparking increases, the motor may suffer accelerated wear, overheating, perfor