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US 12,669,147 B2Granted
Rolling bearing with electrically insulating coating
AssigneeAktiebolaget Skf
InventorsZhonghua Zou, Hongyan Wang, Yanqin Gao
Life of this patent
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Abstract
An electrically insulated bearing ring includes a polymeric insulating coating for blocking the passage of leakage currents, the coating being formed by spraying on at least one surface of the bearing ring. The electrically insulated bearing ring or rings may be incorporated into a rolling bearing.
Claims14
An electrically insulated bearing ring comprising:
- a bearing ring having a polymeric insulating coating configured to block the passage of electrical leakage currents, the coating being applied solely by spraying a polymeric material directly onto a corresponding surface of the bearing ring other than a raceway surface, the coating being formed of a single polymeric material or a mixture of polymeric materials to provide a single coating.
A method of forming an electrically insulated bearing ring, the method comprising the steps of:
- providing an annular body, the annular body having an inner circumferential surface, an outer circumferential surface and two end surfaces, and a polymeric material;
- and
- spraying the polymeric material directly onto at least one corresponding surface of the annular body other than a raceway surface so as to form a polymeric insulating coating configured to block the passage of leakage currents, the polymeric material being a single polymeric material or a mixture of polymeric materials to provide a single coating.
Dependencies are inferred from the claim text.