How to extend the life of your motor bearings
What happened
Process Online published a how‑to guide on extending motor bearing life that focuses on practical mitigations for VSD‑induced shaft currents. The article details shaft‑grounding devices, carbon brushes, and insulated bearings and notes size and application constraints for some options. Operationally this gives procurement concrete retrofit and pass/fail items to include in LTSAs; watch supplier lead times for special‑order insulated bearings
Why the category manager should care
Treat the guidance as executable spec language: include shaft grounding / insulated bearing options as mandatory or priced alternatives in procurement documents
Key facts
- Practical mitigations: shaft grounding, carbon brushes, grounding isolators
- Applicability note: insulated bearings limited to certain bearing sizes
- Recommendation: fit shaft grounding prior to installation or buy motors with preinstalled pro