Our team has identified that the presence of axial flow can significantly degrade the lifespan of motor shafts. After analyzing the causes based on actual field operations, we have implemented effective measures such as installing a rotating shaft grounding brush and reinforcing the insulation between the bearing housing and the bracket at the non-axial extension end. These actions have fundamentally resolved the issue of shaft current hazards.

Preventive Measures:

(1) Installing ground carbon brushes at the shaft end to reduce shaft potential, ensuring reliable grounding of the brushes and secure contact with the rotating shaft. This guarantees that the shaft potential is at zero, thereby eliminating shaft current.

To prevent shaft current from being generated due to factors such as magnetic imbalance, insulating plates are often added at the bearing seats and bearing supports on the non-axial extension end, in order to break the circuit of the shaft current.