Machine with thermally compensated bearings
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United States of America Patent
Stats
-
Jul 2, 1991
Grant Date -
N/A
app pub date -
Mar 21, 1990
filing date -
Mar 21, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An aluminum transmission or transaxle case contains a steel shaft which is supported in the case on two directly mounted tapered roller bearings, so that the two bearings confine the shaft both radially and axially. To compensate for the differences in expansion and contraction between the aluminum case and the steel shaft as the transmission or transaxle experiences variations in temperature, a race of at least one of the bearings is fitted with a compensating ring having a coefficient of thermal expansion greater than that of the case or shaft. As a consequence, the bearings operate at a generally uniform setting over a wide range of temperature variations.
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