US 12,241,504 B2
Rolling bearing
Hayato Kawaguchi, Shizuoka (JP); and Toshiki Masuda, Shizuoka (JP)
Assigned to NTN CORPORATION, Osaka (JP)
Appl. No. 18/024,153
Filed by NTN Corporation, Osaka (JP)
PCT Filed Aug. 26, 2021, PCT No. PCT/JP2021/031325
§ 371(c)(1), (2) Date Mar. 1, 2023,
PCT Pub. No. WO2022/050165, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. 2020-147432 (JP), filed on Sep. 2, 2020.
Prior Publication US 2023/0272820 A1, Aug. 31, 2023
Int. Cl. F16C 19/06 (2006.01); F16C 19/52 (2006.01); F16C 33/58 (2006.01); F16C 33/62 (2006.01)
CPC F16C 19/06 (2013.01) [F16C 19/52 (2013.01); F16C 33/586 (2013.01); F16C 33/62 (2013.01); F16C 2202/30 (2013.01)] 12 Claims
OG exemplary drawing
 
1. 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.
 
9. 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.