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Hitachi Ltd
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Hitachi Ltd
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Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP5134475ApriorityCriticalpatent/JPS51127945A/en
Publication of JPS51127945ApublicationCriticalpatent/JPS51127945A/en
PURPOSE: A roller bearing device, that aims at prolongation of the device life by simultaneously cooling a support unit and lubricant of this roller bearing.