US 12,338,859 B2
Rolling bearing
Shinichi Takizawa, Kanagawa (JP); Hitoshi Nakamura, Kanagawa (JP); Hayato Kawaguchi, Shizuoka (JP); and Toshiki Masuda, Shizuoka (JP)
Assigned to STT INC., Kanagawa (JP); and NTN CORPORATION, Osaka (JP)
Appl. No. 18/268,242
Filed by STT INC., Kanagawa (JP); and NTN CORPORATION, Osaka (JP)
PCT Filed Dec. 22, 2021, PCT No. PCT/JP2021/047719
§ 371(c)(1), (2) Date Jun. 18, 2023,
PCT Pub. No. WO2022/138772, PCT Pub. Date Jun. 30, 2022.
Claims priority of application No. 2020-217269 (JP), filed on Dec. 25, 2020.
Prior Publication US 2024/0052887 A1, Feb. 15, 2024
Int. Cl. F16C 19/06 (2006.01); F16C 33/62 (2006.01); F16C 33/66 (2006.01); F16C 35/073 (2006.01); F16C 35/077 (2006.01)
CPC F16C 33/62 (2013.01) [F16C 19/06 (2013.01); F16C 33/6696 (2013.01); F16C 35/073 (2013.01); F16C 35/077 (2013.01); F16C 2208/32 (2013.01); F16C 2208/60 (2013.01); F16C 2208/80 (2013.01); F16C 2240/54 (2013.01); F16C 2240/60 (2013.01); F16C 2361/65 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A rolling bearing comprising:
an inner ring and an outer ring that are raceway rings, the outer ring being configured to be fitted to a fixed housing or the inner ring being configured to be fitted to a fixed shaft;
a plurality of rolling elements interposed between the inner ring and the outer ring; and
a surface coating film on an outer ring outer diametrical surface or an inner ring inner diametrical surface that is a fitting surface with the fixed housing or the fixed shaft,
wherein:
the surface coating film contains: a binder containing two or more kinds of thermosetting resins having different average molecular weights; and a solid lubricant, and
the solid lubricant contains molybdenum disulfide, polytetrafluoroethylene resin, and graphite.