BALL-AND-ROLLER BEARING FOR HARD DISK DRIVE

PROBLEM TO BE SOLVED: To provide a ball-and-roller bearing for HDD(hard disk drive) which evolves little outgas, has a low torque with a small torque fluctuation and is excellent in durability. SOLUTION: The ball-and-roller bearing for HDD, which has a plurality of rolling elements with the aid of r...

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Bibliographic Details
Main Authors FUJITA YASUNOBU, NAKA MICHIHARU
Format Patent
LanguageEnglish
Published 18.10.2002
Edition7
Subjects
BEARINGS
BLASTING
CHEMISTRY
ELEMENTS OR CRANKSHAFT MECHANISMS
ENGINEERING ELEMENTS AND UNITS
FLEXIBLE SHAFTS
FUELS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
LIGHTING
LUBRICANTS
LUBRICATING COMPOSITIONS
MECHANICAL ENGINEERING
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
PHYSICS
ROTARY BODIES OTHER THAN GEARING ELEMENTS
SHAFTS
TECHNICAL GASES CONTAINING CARBON MONOXIDE
THERMAL INSULATION IN GENERAL
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a ball-and-roller bearing for HDD(hard disk drive) which evolves little outgas, has a low torque with a small torque fluctuation and is excellent in durability. SOLUTION: The ball-and-roller bearing for HDD, which has a plurality of rolling elements with the aid of retainers between the inner race and the outer race and is sealed with a grease, is characterized in that the above grease is such one that a base oil comprising a fluorine-based lubricating oil is blended in a ratio thereto with 5-20 wt.% of a poly(tetrafluoroethylene).
Bibliography:Application Number: JP20010105933