US2020109344A1PendingUtilityA1

Grease composition and rolling bearing

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Assignee: JTEKT CORPPriority: Oct 5, 2018Filed: Sep 20, 2019Published: Apr 9, 2020
Est. expiryOct 5, 2038(~12.2 yrs left)· nominal 20-yr term from priority
Inventors:Yurie HaginoTakeshi Tsuda
C10M 2207/0406C10N 2050/10C10N 2030/02C10M 2229/041C10M 2229/042C10N 2030/06C10M 2229/047C10M 169/02C10M 157/10C10N 2020/02C10M 2217/0456C10N 2040/02C10M 105/18C10M 115/08C10M 169/00C10M 155/02C10M 2215/1026C10N 2250/10C10N 2240/02C10M 2229/046F16C 33/6633C10M 169/06
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Claims

Abstract

A grease composition includes base oil, a thickener, and an organic modified polysiloxane. The base oil is an alkyl diphenyl ether. The thickener is a urea thickener, and the grease composition contains 10 to 30 mass % of the thickener based on the total amount of the base oil and the thickener. The grease composition contains 0.2 to 10 mass % of the organic modified polysiloxane based on the total amount of the base oil and the thickener.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A grease composition, comprising:
 base oil that is an alkyl diphenyl ether;   a thickener that is a urea thickener, the grease composition containing 10 to 30 mass % of the thickener based on a total amount of the base oil and the thickener; and   an organic modified polysiloxane, the grease composition containing 0.2 to 10 mass % of the organic modified polysiloxane based on the total amount of the base oil and the thickener.   
     
     
         2 . The grease composition according to  claim 1 , wherein the organic modified polysiloxane is at least one selected from aralkyl modified polymethyl alkyl siloxanes and polyether modified polydimethylsiloxanes. 
     
     
         3 . A rolling bearing comprising a grease composition sealed in the rolling bearing, wherein;
 the grease composition contains base oil, a thickener, and an organic modified polysiloxane;   the base oil is an alkyl diphenyl ether;   the thickener is a urea thickener, and the grease composition contains 10 to 30 mass % of the thickener based on a total amount of the base oil and the thickener; and   the grease composition contains 0.2 to 10 mass % of the organic modified polysiloxane based on the total amount of the base oil and the thickener.   
     
     
         4 . The rolling bearing according to  claim 3 , wherein the organic modified polysiloxane is at least one selected from aralkyl modified polymethyl alkyl siloxanes and polyether modified polydimethylsiloxanes.

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