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Millwright Bearings – Questions & Verified Solutions
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Millwright Bearings – Questions & Verified Solutions
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Millwright Bearings – Questions & Verified SolutionsTwo kinds of flat bearings differ from there housings they are
A. Solid end of friction
B. Tight and tapered
C. Scored and roller
D. Solid and split ✔️Ans -D. Solid and split
**The choice of bearing tens of the load rotational speed direction of Pull
and support design solid bearings and split bearings are fiction bearings
You can remove bearing cups from a housing using a cup puller (inside
puller) provided that?
a. it is a tapered roller bearing
b. it is an anto froction bearing
c. it is a bearing on a positive set
d. the jaws can be inserted behind the shoulder ✔️Ans -d. the jaws can
be inserted behind the shoulder
Main difference between adapter sleeve and withdrawal sleeve? ✔️Ans -
withdrawal sleeve used on solid bored bousing and adapter sleeve used on
split bored housing
A replacement bearing sucha s tapered roller or angular contact bearing
has it end float controlled by?
a. collar
b. shaft shoulder
c. chamfer
d. shims ✔️Ans -d. shims
When installing a hot bearing on a shaft move it __________ into its final
position.
a. slowly
b. in a rolling fashion
c. clockwise
d. quickly ✔️Ans -d. quickly
When mounting spherical roller bearings the first step is to?
,a. check the reduction is radial clearance of the bearing to ensure proper
installed clearance exists
b. check the reduction is radial clearance of the bearing to ensure proper
installed clearance exists
c. The outer face of the sleeve needs to be tapered
d. check the initial clearance by inserting a feeler gauge between top rollers
and outer ring
e. check the initial clearance by inserting a feeler gauge between top rollers
and inner ring ✔️Ans -d. check the initial clearance by inserting a feeler
gauge between top rollers and outer ring
Mounted tapered Bore bearings using hydraulic nut--check the reduction is
radial clearance of the bearing to ensure proper installed clearance exists
Ball bearings using tapered SLEEVE--check the reduction is radial
clearance of the bearing to ensure proper installed clearance exists
The use of a tapered adapter sleeve allows you to?
a. rotate at higher speeds
b. rotate at higher velocity
c. increase end play
d. mount a bearing anywhere on a standard shaft ✔️Ans -d. mount a
bearing anywhere on a standard shaft
Thrust control can be obtained by using a single taper roller bearing or a
singular contact bearing on one end and?
a. adjusting shrink
b. using matched duplex on other end of shaft
c. allowing other end to float
d. allowing other end to travel ✔️Ans -c. allowing other end to float
Thrust adjustment for angular contact or tapered bearings are made in two
ways.
1. adjust inner race or cone when the outer race or cup is fixed in the
housing
2. adjust snap ring and end play
3. adjust outer race or cup when the inner race or cone id fixed on the shaft
4. locate bearing stabalizer and adjust face plate
a. 1,2
, b. 2,3
c. 1,3
d. 2,4 ✔️Ans -c. 1,3
In most cases the outer race is adjusted by means of an end cover or shims
Adding shims increases end float
removing shims decreases end float
How do you prevent end float in fixed bearings?
a. only one bearing on any shaft assembly should be fixed axially in the
housing
b. both bearings on any shaft assembly should be fixed axially in the
housing
c. install with shrink fit
d. install with press fit ✔️Ans -a. only one bearing on any shaft assembly
should be fixed axially in the housing.
Generally better to "held" or fix bearing on drive end and all other bearings
should have axial clearance to allow movement. This allows for expansion
and contraction (free or flaoting bearings)
This stretches the inner ring of the bearing and reduces the internal
clearance
a. press fit
b. shrink fit
c. seizing
d. press or shring fit ✔️Ans -d. press or shrink fit
In replacing a tapered roller or angular contact bearing, after they have
cooled during heating check them for a possible gap between the?
a. shaft and housing
b. shaft shoulder and the cone or inner ring
c. collar and cone
d. face and cone ✔️Ans -b. shaft shoulder and the cone or inner ring
*May be necessary to press bearing ring tight against shoulder
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