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Coating is a well-established method to upgrade materials and to provide bearings with additional features for specific application conditions. Two different coating methods developed by SKF are available and already successfully proven in many applications.

The surface coating, trademarked NoWear®, applies a low friction ceramic coating on the bearing inner surfaces to withstand long periods of operation under marginal lubrication for example. More details can be found in the section NoWear® bearings.
The SKF INSOCOAT® coating, which can be applied to the external surfaces of the outer ring or inner ring of a bearing, offers resistance to the damage that can be caused by the passage of electric current through the bearing. More details can be found in the section INSOCOAT® bearings.
Other coatings like zinc chromate for example, can offer an alternative to stainless steel in a corrosive environment, especially for ready-to-mount bearing units.
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