Rolling contact bearing for supporting heated rolls
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United States of America Patent
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-
Jul 9, 2002
Grant Date -
N/A
app pub date -
Mar 10, 2000
filing date -
Mar 10, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A rolling-contact bearing for a shaft journal wherein the outside diameter of the shaft journal is thermally insulated relative to the shaft through which a heat transfer medium flows. The bore of the inner race on the shaft journal is provided with a ceramic layer predominantly of zirconium oxide and a smaller among of yttrium oxide to reduce the heat transfer from the shaft journal to the rolling-contact bearing. The inner race also has lateral surfaces toward the elements securing the bearing on the shaft journal. Those lateral surfaces may be provided with a ceramic layer as well.
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