Bearing with grease pockets, bearing device with plural bearings, and recording device equipped with bearing device
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United States of America Patent
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Dec 23, 2014
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N/A
app pub date -
Sep 30, 2013
filing date -
Nov 7, 2012
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Abstract
A bearing device has two or more bearings each having an inner ring and an outer ring disposed on the same axis. A ring-shaped holder is disposed between the inner ring and the outer ring and has circumferentially spaced-apart rolling element pockets with a concave grease pocket between each two adjacent rolling element pockets. Rolling elements are disposed in a rollable manner in respective ones of the rolling element pockets and a grease is stored in the grease pockets, the grease serving as a lubricant of the rolling element. The grease consists of at least a base oil comprised of aromatic carbon and a thickener, the content of the aromatic hydrocarbon being 70 weight % or more of the grease.
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