GREASE COMPOSITION AND GREASE-SEALED BEARING

Title:

GREASE COMPOSITION AND GREASE-SEALED BEARING

Document Type and Number:

WIPO Patent Application WO/2023/048119

Kind Code:

A1

Abstract:

Provided are a grease composition that can effectively prevent premature detachment caused by hydrogen embrittlement and a grease-sealed bearing in which the grease composition is sealed. A grease composition 7 comprises a base oil, a thickening agent, and an additive. The additive comprises sodium molybdate as an essential component, as well as a sorbitan-based ester or a metal sulfonate. The metal sulfonate is Ca sulfonate or Zn sulfonate, and the content of the metal sulfonate is less than 3 parts by mass per 100 parts by mass of the total amount of the base oil and thickening agent.

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Inventors:

KAWAMURA TAKAYUKI (JP)

Application Number:

PCT/JP2022/034923

Publication Date:

March 30, 2023

Filing Date:

September 20, 2022

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)

International Classes:

C10M141/02; C10M141/08; C10M169/04; C10M169/06; F16C19/06; C10M107/02; C10M115/08; C10M125/00; C10M129/76; C10M135/10; C10N10/04; C10N30/06; C10N40/00; C10N40/02; C10N50/10

Domestic Patent References:

WO2021153258A1	2021-08-05
WO2016147969A1	2016-09-22

Foreign References:

JP2013035882A	2013-02-21
JP2007177063A	2007-07-12
JP2005112902A	2005-04-28

Attorney, Agent or Firm:

WAKI Hikaru et al. (JP)

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