Browsing: bearing inspection

This guide defines electrical fluting as a patterned bearing defect caused by repeated VFD-induced discharge events. It details the formation of the “washboard” pattern on raceways, identification through vibration and noise, and mitigation strategies such as grounding rings and insulated bearings.

This complete guide explains the definition, materials (such as Aluminum Oxide), and structure of a bearing insulation layer. It details how these layers block harmful electrical currents to prevent EDM damage and extend motor life in industrial applications.

This diagnostic guide details how to distinguish VFD-induced electrical bearing damage from mechanical failure through visual inspection of fluting, vibration analysis, and shaft voltage testing.