US 11,873,863 B2
Insulating rolling bearing
Satoru Fukuzawa, Mie (JP); and Masato Shimoda, Mie (JP)
Assigned to NTN CORPORATION, Osaka (JP)
Appl. No. 17/762,706
Filed by NTN CORPORATION, Osaka (JP)
PCT Filed Sep. 9, 2020, PCT No. PCT/JP2020/034063
§ 371(c)(1), (2) Date Mar. 22, 2022,
PCT Pub. No. WO2021/065391, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 2019-179197 (JP), filed on Sep. 30, 2019; and application No. 2020-042655 (JP), filed on Mar. 12, 2020.
Prior Publication US 2022/0341464 A1, Oct. 27, 2022
Int. Cl. F16C 19/06 (2006.01); F16C 33/58 (2006.01); F16C 35/07 (2006.01); F16C 35/073 (2006.01); F16C 35/077 (2006.01)
CPC F16C 33/58 (2013.01) [F16C 19/06 (2013.01); F16C 35/073 (2013.01); F16C 35/077 (2013.01); F04C 2240/50 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An insulating rolling bearing comprising:
an inner ring;
an outer ring;
rolling elements that are interposed between the inner ring and the outer ring; and
an insulating bushing that is fitted to an inner peripheral portion of the inner ring or an outer peripheral portion of the outer ring,
wherein:
the insulating bushing consists of a generally cylindrical metal base, and a resin layer formed on an inner peripheral surface or an outer peripheral surface of the metal base, and
the insulating bushing is fitted to the inner peripheral portion of the inner ring or the outer peripheral portion of the outer ring such that the metal base abuts on the inner peripheral portion of the inner ring or the outer peripheral portion of the outer ring, and
the insulating bushing is (A) a bushing that is fitted to the inner peripheral portion of the inner ring and is formed by the metal base on the outer diameter side and the resin layer on the inner diameter side, or (B) a bushing that is fitted to the outer peripheral portion of the outer ring and is formed by the metal base on the inner diameter side and the resin layer on the outer diameter side.