2
Millwright. Bearings Exam with accurate detailed solutions || || || || || ||
Two 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 - ✔✔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 - ✔✔d. the jaws can be inserted behind the
|| || || || || || || || || || || || || || || || || ||
shoulder
Main difference between adapter sleeve and withdrawal sleeve? - ✔✔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
||
,2
d. shims - ✔✔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 - ✔✔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 -
|| || || || || || || || || || || || || || || || ||
✔✔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
|| || || ||
,2
b. rotate at higher velocity
|| || || || ||
c. increase end play
|| || ||
d. mount a bearing anywhere on a standard shaft - ✔✔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 - ✔✔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 - ✔✔c. 1,3
|| || || || ||
In most cases the outer race is adjusted by means of an end cover or shims
|| || || || || || || || || || || || || || ||
Adding shims increases end float
|| || || ||
, 2
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 - ✔✔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 - ✔✔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 - ✔✔b. shaft shoulder and the cone or inner ring
|| || || || || || || || || || || || ||
*May be necessary to press bearing ring tight against shoulder
|| || || || || || || || ||
Millwright. Bearings Exam with accurate detailed solutions || || || || || ||
Two 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 - ✔✔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 - ✔✔d. the jaws can be inserted behind the
|| || || || || || || || || || || || || || || || || ||
shoulder
Main difference between adapter sleeve and withdrawal sleeve? - ✔✔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
||
,2
d. shims - ✔✔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 - ✔✔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 -
|| || || || || || || || || || || || || || || || ||
✔✔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
|| || || ||
,2
b. rotate at higher velocity
|| || || || ||
c. increase end play
|| || ||
d. mount a bearing anywhere on a standard shaft - ✔✔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 - ✔✔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 - ✔✔c. 1,3
|| || || || ||
In most cases the outer race is adjusted by means of an end cover or shims
|| || || || || || || || || || || || || || ||
Adding shims increases end float
|| || || ||
, 2
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 - ✔✔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 - ✔✔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 - ✔✔b. shaft shoulder and the cone or inner ring
|| || || || || || || || || || || || ||
*May be necessary to press bearing ring tight against shoulder
|| || || || || || || || ||
