GREASE COMPOSITION FOR HUB UNIT BEARING EQUIPPED WITH ANGULAR CONTACT BALL BEARING, AND HUB UNIT BEARING

PROBLEM TO BE SOLVED: To provide a grease composition for a hub unit bearing equipped with an angular contact ball bearing which has little grease leakage in the hub unit bearing, and excels in flaking resistance and bearing lubrication life. SOLUTION: This grease composition for the hub unit bearin...

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Hauptverfasser:	AZUMA TAKASHI, SAIDA OSAMU, YAMAMOTO MASAMICHI
Format:	Patent
Sprache:	eng
Schlagworte:	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 LIGHTING LUBRICANTS LUBRICATING COMPOSITIONS MECHANICAL ENGINEERING METALLURGY PEAT PETROLEUM, GAS OR COKE INDUSTRIES 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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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a grease composition for a hub unit bearing equipped with an angular contact ball bearing which has little grease leakage in the hub unit bearing, and excels in flaking resistance and bearing lubrication life. SOLUTION: This grease composition for the hub unit bearing equipped with the angular contact ball bearing includes: a thickener (a) of a mixture of diurea compounds represented by following formulae (I), (II) and (III); a base oil (b); molybdenum dialkyldithiocarbamate (c); and calcium sulfonate (d). (I): R1-NHCONH-R2-NHCONH-R1, (II): R1-NHCONH-R2-NHCONH-R3, and (III): R3-NHCONH-R2-NHCONH-R3, wherein R1is a cyclohexyl group, R2is a 6-15C divalent aromatic hydrocarbon group, R3is a 12-20C linear or branched alkyl group, and [R1/(R1+R3)]×100=85-95 mol%. COPYRIGHT: (C)2011,JPO&INPIT