NSK’s Ceramic-Coated Ball Bearings with high insulation resistance are optimal for applications that are susceptible to bearing damage and failures due to electrical corrosion. Ceramic-coated ball bearings are plasma sprayed to ensure a proper bonding to the bearing steel. The coating is sealed with a special acrylic resin that helps prevent significant deterioration of electrical resistance.

These bearings are supplied across the world for industrial motors & generators, traction motors and wind energy applications.

Condition Description

  • Corrosive Environment


  • Electric Motors
  • Power Generation
  • Power Transmission
  • Wind Energy

Product Features

  • Ceramic-coated bearing ring.
  • Optimised thickness of ceramic coating.
  • High durability of the coating due to specific plasma spray process.
  • Acrylic resin layer to seal the coating and to optimise the insulation capability.
  • Available with standard bearing dimensions.


  • High insulation resistance.
  • High cost efficiency due to increased bearing life.
  • Cheaper when compared to hybrid bearings.
  • Special preparation of the housing bore is not required.
6218 HD2 C3
Show Description
6218Bearing type and series
HD2Bore diameter
C3Ceramic Coating / Radial internal clearance

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