Grease and grease sealed bearing

Details Grease and grease sealed bearing Grease and grease sealed bearing

2006-05-30

2006-05-30

McAvoy, Ellen M. (Department: 1764)

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Organic nitrogen compound

C508S463000, C508S551000, C508S552000, C508S580000

Reexamination Certificate

active

07053028

ABSTRACT:
Disclosed is a grease that provides a prolonged lubricating lifetime to applied portions for use at high temperature, and a grease sealed bearing in which the bearing is sealed with this grease. This grease comprises a base oil, a thickener, and an amide-based wax. The amide-based wax is contained in an amount of 0.5 to 10% by weight based on the total amount of the grease, has a melting point of 80° C. or more, and an antioxidative ability to the base oil. The base oil is at least one base oil selected from the group consisting of an ether-based oil, an ester-based oil and a synthetic hydrocarbon oil, and has kinematic viscosity of 20 to 150 mm2/s at 40° C. The thickener is an urea-based thickener, and is contained in an amount of 5 to 30% by weight based on the total amount of the grease.

REFERENCES:
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patent: 5424349 (1995-06-01), Gatto
patent: 6500787 (2002-12-01), Tanaka et al.
patent: 1018842 (1991-04-01), None
patent: 0 336 875 (1989-10-01), None
patent: 60-031598 (1985-02-01), None
Manual for the Bearings.

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