ROLLING BEARING AND GREASE COMPOSITION USED THEREIN
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United States of America Patent
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Issued Date -
Nov 19, 2015
app pub date -
Dec 27, 2012
filing date -
Dec 27, 2012
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Abstract
A rolling bearing including a plurality of rolling elements rollably provided between an inner ring and an outer ring and having enclosed therein a grease composition obtained by adding three kinds of antirust agents which are a carboxylic acid-based antirust agent, a carboxylate-based antirust agent and an amine-based antirust agent, to a base oil which contains at least one kind of a mineral oil and a synthetic oil and has a kinematic viscosity of 200 to 400 mm2/s at 40° C., the grease composition having a penetration of 300 to 400 and a yield stress of 150 Pa or less at 40° C.
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