GREASE COMPOSITION FOR MAIN ELECTRIC MOTOR SHAFT BEARING OF RAILWAY VEHICLE, AND SHAFT BEARING

PROBLEM TO BE SOLVED: To provide a grease composition for a main electric motor shaft bearing of a railway vehicle, which has excellent heat resistance and a long bearing lubrication life.SOLUTION: The grease composition for a main electric motor shaft bearing of a railway vehicle includes: (a) a th...

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Bibliographische Detailangaben
1. Verfasser:	SAIDA OSAMU
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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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a grease composition for a main electric motor shaft bearing of a railway vehicle, which has excellent heat resistance and a long bearing lubrication life.SOLUTION: The grease composition for a main electric motor shaft bearing of a railway vehicle includes: (a) a thickener including a hydroxy fatty acid with a carbon number of 12 to 24 having one or a plurality of hydroxyl groups and a lithium salt of fatty acid or dicarboxylic acid with a carbon number of 2 to 12; (b) base oil including an oil with a kinematic viscosity at 40°C of 300 to 500 mm/s, an oil with a kinematic viscosity at 40°C of 80 to 300 mm/s, and an oil with a kinematic viscosity at 40°C of 20 to 80 mm/s, which has a kinematic viscosity at 40°C of 80 to 200 mm/s; (c) an amine-based antioxidant; and (d) a hindered phenolic antioxidant.