A thrust bearing is a particular type of
rotary bearing. Like other bearings, they permit rotation
between parts, but they are designed to support a predominantly
axial load.
Thrust Ball Bearings are designed to handle axial/thrust loads
only. They should not be used for any radial load applications.
A bearing ring mounted on the shaft is called a shaft washer,
and the one mounted on housing is called a housing washer.
Thrust Ball Bearings are of two types:
Single Direction type
Suitable for handling only uni-directional axial loads.
Double Direction type
Suitable for handling bi-directional axial loads.
Thrust Ball Bearings are not suitable for high-speed
applications. At high speeds, sliding movement between balls and
raceways can occur, which may result in smearing. Further at
high speeds, centrifugal forces expel lubricating oil. This fact
alone restricts acceptability of Thrust Ball Bearings for
high-speed applications.
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