STACK BEARING WITH CARBONITRIDED BEARING BALLS
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United States of America Patent
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Issued Date -
Apr 20, 2017
app pub date -
Oct 15, 2015
filing date -
Oct 15, 2015
priority date (Note) -
Abandoned
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Abstract
A stack bearing assembly is provided having stacked bearing rings and bearing balls located between the rings in races. The bearing balls are formed from 100Cr6 steel that is carbonitrided. After carbonitriding, the bearing balls are polished. The carbonitrided and polished bearing balls are assembled in the races of the bearing rings to provide increased resistance to wear from the debris traveling through the bearing assembly in use, and increase toughness in order to withstand the wear caused by debris in a drilling rig. A method of producing a stack bearing assembly is also provided.
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