How to extend the life of your motor bearings
What happened
A Process Online article explains how variable speed drives (VSDs) improve energy efficiency but create common-mode voltages that can shorten motor bearing life. The piece highlights specific mitigation like shaft grounding devices and insulated bearings and notes recommended practices for motors above a certain size. Buyers should watch for supplier proposals that omit these protections or supply non‑interchangeable bearing options
Why the category manager should care
Treat motor bearing protection as a purchase spec and LTSA acceptance criterion, not an optional add-on
Key facts
- Guidance to add shaft grounding devices prior to installation
- Recommendation to use insulated bearings on larger motors
- Discussion of common‑mode voltage paths that cause shaft currents