US 12,253,113 B2
Grease-sealed bearing
Kota Watanabe, Mie (JP)
Assigned to NTN CORPORATION, Osaka (JP)
Appl. No. 18/026,573
Filed by NTN CORPORATION, Osaka (JP)
PCT Filed Sep. 13, 2021, PCT No. PCT/JP2021/033500
§ 371(c)(1), (2) Date Mar. 15, 2023,
PCT Pub. No. WO2022/059638, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 2020-155899 (JP), filed on Sep. 16, 2020.
Prior Publication US 2023/0332646 A1, Oct. 19, 2023
Int. Cl. F16C 33/66 (2006.01); C10M 115/10 (2006.01); C10M 169/02 (2006.01); F16C 33/78 (2006.01); C10N 40/02 (2006.01); C10N 50/10 (2006.01)
CPC F16C 33/6633 (2013.01) [C10M 115/10 (2013.01); C10M 169/02 (2013.01); C10M 2203/003 (2013.01); C10M 2219/0445 (2013.01); C10N 2040/02 (2013.01); C10N 2050/10 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A grease-sealed bearing comprising:
an inner ring and an outer ring that are raceway rings;
a plurality of rolling elements that is interposed between the inner ring and the outer ring; and
a grease composition that is sealed around the rolling elements,
the bearing being configured to oscillate such that a rotational direction of the bearing changes while accelerating and decelerating,
wherein:
the grease composition contains a base oil and a thickener,
the worked penetration of the grease composition is 310 or more, and
the thickener is a calcium sulfonate complex soap.