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US 12,241,504 B2Granted
Rolling bearing
AssigneeNtn Corporation
InventorsHayato Kawaguchi, Toshiki Masuda
Life of this patent
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Abstract
A bearing device includes an inner ring and an outer ring. At least one of the radially inner surface of the inner ring and the radially outer surface of the outer ring is covered with a coating layer. The coating layer is a coating layer composite composed of a plurality of layers. Of the plurality of layers, the surface layer is composed of an anti-creep film having lubricity, and at least one layer other than the surface layer is composed of an insulating film having insulating properties.
Claims12
A rolling bearing comprising:
- an inner ring having a radially inner surface,
- an outer ring having a radially outer surface, and
- rolling elements between the inner ring and the outer ring,
- wherein at least one of the radially inner surface of the inner ring and the radially outer surface of the outer ring is covered with a coating layer,
- wherein the coating layer comprises a coating layer composite composed of a plurality of layers,
- wherein a surface layer of the plurality of layers is composed of an anti-creep film having lubricity,
- wherein at least one of the plurality of layers excluding the surface layer is composed of an insulating film having insulation properties, and
- wherein the insulating film is a calcined film containing at least one of a ceramic material, an epoxy-based resin and a polyamideimide-based resin.
5 more elements
A rolling bearing comprising:
- an inner ring having a radially inner surface,
- an outer ring having a radially outer surface, and
- rolling elements between the inner ring and the outer ring,
- wherein at least one of the radially inner surface of the inner ring and the radially outer surface of the outer ring is covered with a coating layer,
- wherein the coating layer comprises a coating layer composite composed of a plurality of layers,
- wherein a surface layer of the plurality of layers is composed of an anti-creep film having lubricity,
- wherein at least one of the plurality of layers excluding the surface layer is composed of an insulating film having insulation properties, and
- wherein the anti-creep film is a sintered film containing a resin binder and solid lubricant powder.
5 more elements
Dependencies are inferred from the claim text.