2
Millwright 2 bearing/lubrication Exam with precise detailed || || || || || || ||
answers
Excessive pressure on a ball bearing while stationary will cause:
|| || || || || || || || ||
a) Spalling.
||
b) False brinelling.
|| ||
c) Brinelling.
||
d) Fluting.
||
Brinelling.
Which type of rolling element can carry a greater load?
|| || || || || || || || ||
a) Ball
||
b) Tilting pad
|| ||
c) Roller
||
d) Pivoting shoe
|| ||
Roller
Why can rollers carry a greater load than balls in an anti-friction bearing?
|| || || || || || || || || || || ||
a) It has "line" or rectangular contact (greater surface area)
|| || || || || || || || ||
b) It has greater diameter
|| || || ||
c) It has greater mass
|| || || ||
d) It has "point" or circular contact (greater surface area)
|| || || || || || || || ||
It has "line" or rectangular contact (greater surface area)
|| || || || || || || ||
,2
Which of the following is not a function of a bearing cage?
|| || || || || || || || || || ||
a) To push the rolling elements through the unloaded zone
|| || || || || || || || ||
b) To retain the lubricant that is in the bearing
|| || || || || || || || ||
c) To maintain separation between rolling elements
|| || || || || ||
d) To guide the rolling elements with minimum friction
|| || || || || || || ||
To retain the lubricant that is in the bearing
|| || || || || || || ||
Which of the following bearing types would be best suited to a high thrust/high radial
|| || || || || || || || || || || || || || ||
combination load? ||
a) Single row deep groove ball bearing
|| || || || || ||
b) Tapered roller bearing
|| || ||
c) Kingsbury tilting pad bearing
|| || || ||
d) Cylindrical roller bearing
|| || ||
Tapered roller bearing || ||
An important consideration when using an angular contact ball bearing is:
|| || || || || || || || || ||
a) There must always be a thrust component to the load.
|| || || || || || || || || ||
b) They can only support thrust in two directions.
|| || || || || || || ||
c) They are designed for radial loads only.
|| || || || || || ||
d) They cannot support any radial load at all.
|| || || || || || || ||
There must always be a thrust component to the load.
|| || || || || || || || ||
,2
What is the purpose of machining loading slots into bearing raceways?
|| || || || || || || || || ||
a) It is necessary to allow assembly of ball bearings
|| || || || || || || || ||
b) This is how grease is loaded into the bearing
|| || || || || || || || ||
c) It allows more rolling elements to be inserted in maximum capacity bearings
|| || || || || || || || || || || ||
d) It is necessary for spot welding the cage in position
|| || || || || || || || || ||
It allows more rolling elements to be inserted in maximum capacity bearings
|| || || || || || || || || || ||
What is the benefit of an externally self-aligning ball bearing?
|| || || || || || || || ||
a) It accommodates misalignment due to shaft deflection ("wobble")
|| || || || || || || ||
b) It helps align or "steer" the shaft
|| || || || || || ||
c) It accommodates misalignment in the mounting arrangement
|| || || || || || ||
d) It keeps the rolling elements in a row or "aligned"
|| || || || || || || || || ||
It accommodates misalignment in the mounting arrangement
|| || || || || ||
What is the benefit of an internally self-aligning ball bearing?
|| || || || || || || || ||
a) It accommodates misalignment due to shaft deflection ("wobble")
|| || || || || || || ||
b) It helps align or "steer" the shaft
|| || || || || || ||
c) It accommodates misalignment in the mounting arrangement
|| || || || || || ||
d) It keeps the rolling elements in a row or "aligned"
|| || || || || || || || || ||
It accommodates misalignment due to shaft deflection ("wobble")
|| || || || || || ||
, 2
Which of the following angular contact ball bearing arrangements would handle thrust in
|| || || || || || || || || || || || ||
two directions?
||
a) Tandem mounted
|| ||
b) Any dual angular contact ball bearing arrangement would work
|| || || || || || || || ||
c) Angular contact ball bearings cannot tolerate thrust
|| || || || || || ||
d) Duplex face-to-face
|| ||
Duplex face-to-face ||
Which of the following is an important thing to remember about four-point angular contact
|| || || || || || || || || || || || || ||
ball bearings?
||
a) They should never be used with combination loads
|| || || || || || || ||
b) They should never be used with purely radial loads
|| || || || || || || || ||
c) They should never be used with purely axial loads
|| || || || || || || || ||
d) They require more space than duplex mounted angular contact ball bearings
|| || || || || || || || || || ||
They should never be used with purely radial loads
|| || || || || || || ||
Which of the following roller bearings will tolerate a small amount of thrust in one
|| || || || || || || || || || || || || || ||
direction?
a) Type "N"
|| ||
b) Type "NU"
|| ||
c) Type "NJ"
|| ||
d) Cylindrical bearings are for pure radial loads only
|| || || || || || || ||
Type "NJ" ||
Millwright 2 bearing/lubrication Exam with precise detailed || || || || || || ||
answers
Excessive pressure on a ball bearing while stationary will cause:
|| || || || || || || || ||
a) Spalling.
||
b) False brinelling.
|| ||
c) Brinelling.
||
d) Fluting.
||
Brinelling.
Which type of rolling element can carry a greater load?
|| || || || || || || || ||
a) Ball
||
b) Tilting pad
|| ||
c) Roller
||
d) Pivoting shoe
|| ||
Roller
Why can rollers carry a greater load than balls in an anti-friction bearing?
|| || || || || || || || || || || ||
a) It has "line" or rectangular contact (greater surface area)
|| || || || || || || || ||
b) It has greater diameter
|| || || ||
c) It has greater mass
|| || || ||
d) It has "point" or circular contact (greater surface area)
|| || || || || || || || ||
It has "line" or rectangular contact (greater surface area)
|| || || || || || || ||
,2
Which of the following is not a function of a bearing cage?
|| || || || || || || || || || ||
a) To push the rolling elements through the unloaded zone
|| || || || || || || || ||
b) To retain the lubricant that is in the bearing
|| || || || || || || || ||
c) To maintain separation between rolling elements
|| || || || || ||
d) To guide the rolling elements with minimum friction
|| || || || || || || ||
To retain the lubricant that is in the bearing
|| || || || || || || ||
Which of the following bearing types would be best suited to a high thrust/high radial
|| || || || || || || || || || || || || || ||
combination load? ||
a) Single row deep groove ball bearing
|| || || || || ||
b) Tapered roller bearing
|| || ||
c) Kingsbury tilting pad bearing
|| || || ||
d) Cylindrical roller bearing
|| || ||
Tapered roller bearing || ||
An important consideration when using an angular contact ball bearing is:
|| || || || || || || || || ||
a) There must always be a thrust component to the load.
|| || || || || || || || || ||
b) They can only support thrust in two directions.
|| || || || || || || ||
c) They are designed for radial loads only.
|| || || || || || ||
d) They cannot support any radial load at all.
|| || || || || || || ||
There must always be a thrust component to the load.
|| || || || || || || || ||
,2
What is the purpose of machining loading slots into bearing raceways?
|| || || || || || || || || ||
a) It is necessary to allow assembly of ball bearings
|| || || || || || || || ||
b) This is how grease is loaded into the bearing
|| || || || || || || || ||
c) It allows more rolling elements to be inserted in maximum capacity bearings
|| || || || || || || || || || || ||
d) It is necessary for spot welding the cage in position
|| || || || || || || || || ||
It allows more rolling elements to be inserted in maximum capacity bearings
|| || || || || || || || || || ||
What is the benefit of an externally self-aligning ball bearing?
|| || || || || || || || ||
a) It accommodates misalignment due to shaft deflection ("wobble")
|| || || || || || || ||
b) It helps align or "steer" the shaft
|| || || || || || ||
c) It accommodates misalignment in the mounting arrangement
|| || || || || || ||
d) It keeps the rolling elements in a row or "aligned"
|| || || || || || || || || ||
It accommodates misalignment in the mounting arrangement
|| || || || || ||
What is the benefit of an internally self-aligning ball bearing?
|| || || || || || || || ||
a) It accommodates misalignment due to shaft deflection ("wobble")
|| || || || || || || ||
b) It helps align or "steer" the shaft
|| || || || || || ||
c) It accommodates misalignment in the mounting arrangement
|| || || || || || ||
d) It keeps the rolling elements in a row or "aligned"
|| || || || || || || || || ||
It accommodates misalignment due to shaft deflection ("wobble")
|| || || || || || ||
, 2
Which of the following angular contact ball bearing arrangements would handle thrust in
|| || || || || || || || || || || || ||
two directions?
||
a) Tandem mounted
|| ||
b) Any dual angular contact ball bearing arrangement would work
|| || || || || || || || ||
c) Angular contact ball bearings cannot tolerate thrust
|| || || || || || ||
d) Duplex face-to-face
|| ||
Duplex face-to-face ||
Which of the following is an important thing to remember about four-point angular contact
|| || || || || || || || || || || || || ||
ball bearings?
||
a) They should never be used with combination loads
|| || || || || || || ||
b) They should never be used with purely radial loads
|| || || || || || || || ||
c) They should never be used with purely axial loads
|| || || || || || || || ||
d) They require more space than duplex mounted angular contact ball bearings
|| || || || || || || || || || ||
They should never be used with purely radial loads
|| || || || || || || ||
Which of the following roller bearings will tolerate a small amount of thrust in one
|| || || || || || || || || || || || || || ||
direction?
a) Type "N"
|| ||
b) Type "NU"
|| ||
c) Type "NJ"
|| ||
d) Cylindrical bearings are for pure radial loads only
|| || || || || || || ||
Type "NJ" ||
