Ball Bearings

Roller Bearings

Technical Ceramics

Bearing Parts & Accessories

Insulated Bearings Introduction

Insulated bearings are designed to protect against electrical damage in motors and other equipment. By adding a thin alumina ceramic coating to the outer or inner ring, these bearings block harmful shaft currents. This prevents damage to grease, rolling elements, and raceways, helping machines run longer, safer, and more reliably.


Performance Features

  • Excellent Insulation: Alumina coating (50–200 μm) withstands up to 3000V DC.

  • High Resistance: Insulation resistance >100 MΩ at 500VDC, >50 MΩ at 1000VDC.

  • Electrical Corrosion Protection: Prevents shaft currents, reducing wear and extending bearing life.

  • Stable Performance: Special sealing treatment avoids moisture absorption from plasma spray coating, ensuring reliable insulation in all environments.

Insulated Ball Bearing

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