Technical Blog

Expert insights on motor bearing protection, shaft current solutions, VFD bearing failure prevention, and nanocrystalline core applications.

Motor Protection

VFD Motor Bearing Failure: Causes, Symptoms, and Solutions

VFDs generate common-mode voltage that induces destructive shaft currents through motor bearings, causing EDM pitting and bearing fluting within months. Learn the complete damage chain and 3 proven prevention methods including shaft grounding rings.

Sungturn Technical Team July 4, 2026 10 min read

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More technical articles coming soon, including:

• Shaft Grounding Ring vs Insulated Bearing: Which Is Better?
• How to Select the Right Bearing Isolator for Your Pump
• AEGIS SGR Alternatives: Cost-Effective Shaft Grounding Solutions
• Nanocrystalline Cores for Common-Mode Chokes: A Technical Guide