Millwright. Bearings UPDATED Exam
Questions and CORRECT Answers
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 - Correct Answer- 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 - Correct Answer- d. the jaws can be inserted
behind the shoulder
Main difference between adapter sleeve and withdrawal sleeve? - Correct Answer-
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 - Correct Answer- 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 - Correct Answer- 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 -
Correct Answer- 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 - Correct Answer- 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 - Correct Answer- 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 - Correct Answer- 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 - Correct Answer- 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 - Correct Answer- 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 - Correct Answer- b. shaft shoulder and the cone or inner ring
*May be necessary to press bearing ring tight against shoulder
K inducates what on the end of bearing identification? - Correct Answer- Tapered
K-common 1-in-12 taper
K30 larger bearings
A shield on bearing code is indicatd by? - Correct Answer- Letter Z
Rubbing seal-RS
P on bearing code indicates? - Correct Answer- Small tolerance:P6 indicates large tolerance
The type of friction bearing called solid bearing is designed to be used in locations where the
load is applied to the
A. bottom
B. Side
C. Top
D. Axel - Correct Answer- C. Top
Solid bearings are frequently mounted in a _______ position
Questions and CORRECT Answers
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 - Correct Answer- 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 - Correct Answer- d. the jaws can be inserted
behind the shoulder
Main difference between adapter sleeve and withdrawal sleeve? - Correct Answer-
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 - Correct Answer- 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 - Correct Answer- 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 -
Correct Answer- 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 - Correct Answer- 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 - Correct Answer- 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 - Correct Answer- 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 - Correct Answer- 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 - Correct Answer- 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 - Correct Answer- b. shaft shoulder and the cone or inner ring
*May be necessary to press bearing ring tight against shoulder
K inducates what on the end of bearing identification? - Correct Answer- Tapered
K-common 1-in-12 taper
K30 larger bearings
A shield on bearing code is indicatd by? - Correct Answer- Letter Z
Rubbing seal-RS
P on bearing code indicates? - Correct Answer- Small tolerance:P6 indicates large tolerance
The type of friction bearing called solid bearing is designed to be used in locations where the
load is applied to the
A. bottom
B. Side
C. Top
D. Axel - Correct Answer- C. Top
Solid bearings are frequently mounted in a _______ position
