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3-50.
3-51.
Items 3–50 through 3–52 are based
on figure 3C.
Which of the following types of
bearing is often used in the
housing to provide free movement in
the direction indicated by arrow C?
1.
Thrust bearing
2.
Journal bearing
3.
Reciprocal motion bearing
4.
Tapered roller bearing
A radial ball bearing used in the
housing is superior to a journal
bearing for
1.
2.
3.
4.
reduction of friction under
heavy twisting stress as
indicated by arrow A
absorption of stress as
indicated by arrow B
prevention of shaft motion as
indicated by arrow C
reduction of friction during
high–speed rotation of the
shaft as indicated by arrow D
3–52.
What type of bearing is designed to
permit free rotation of the shaft
while restraining motion in the
direction indicated by arrow C?
1.
Radial ball bearing
2.
Needle roller bearing
3.
Thrust bearing
4.
Journal bearing
3–53.
The two hardened steel rings of a
ball bearing assembly are called
the
1.
rollers
2.
races
3.
separators
4.
shoulders
3–54.
The spring in the mechanism shown
in figure 3D is used to
1.
store energy for part of a
functioning cycle
2.
force a component to engauge
another component
3.
return a component to neutral
position after displacement
4.
counterbalance a weight or
thrust
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