MILLWRIGHT BEARINGS EXAM 2025 QUESTIONS WITH
ANSWERS RATED A+
✔✔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
✔✔K inducates what on the end of bearing identification? - ✔✔Tapered
K-common 1-in-12 taper
K30 larger bearings
✔✔A shield on bearing code is indicatd by? - ✔✔Letter Z
Rubbing seal-RS
✔✔P on bearing code indicates? - ✔✔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 - ✔✔C. Top
✔✔Solid bearings are frequently mounted in a _______ position
A. Awkward
B. Tight
C. Inverted
D. Delicate - ✔✔C. Inverted
✔✔Another type of friction bearing called split bearing has a two bolt pattern and a four
bolt pattern bearing. The two bolt is used for _________ and medium loads
A. Light
,B. Heavy
C. Super light
D. Metal - ✔✔A. Light
A four bolt bearing is used for medium to heavy loads
✔✔Angle bearings are used for drives in either of the following situations when the load
is applied parallel to or at a slight angle to the horizontal and
A. When load is bottom heavy
B. When load is too heavy
C. When the bearing is mounted on a horizontal support
D. When the bearing is mounted on a vertical support - ✔✔D. When the bearing is
mounted on a vertical support
✔✔Bearing joints are designed in three general styles
A. Flat, Gibb, short
B. Flat, Dhitt, sew
C. Gibb, Flat, Round
D. Flat, Gibb, Angle - ✔✔D. Flat, Gibb, Angle
✔✔When the joints have a little step they keep the cap from moving sideways this
bearing combines the rigidity of a solid block with the advantages of a split construction
A. Gibb
B. Roller
C. Flat
D. Angle - ✔✔A. Gibb
✔✔****When selecting liner material it should be softer than shaft material so it to form
slightly under heavy loads of good coefficient of friction wear resistant good, conductor
and readily available*** - ✔✔Metallic liner materials must have a little coefficient of
expansion
✔✔Nonmetallic liner materials are nylon polyurethanes and
A. Plastic
B. Copper
C. Babbit
D. Phenol laminates - ✔✔D phenyl laminates
****Metallic liner materials are Babbitt brass bronze aluminum*****
✔✔Tin based babbit with a very high tin content is sometimes called
A. Silver babbit
B. Shire babbit
C. Nickel
, D. Nickel babbit - ✔✔D. Nickel babbit
✔✔A mandrel is used to shape and size
A. Keys
B. Brakes
C. Bearings
D. Slots in bearings - ✔✔C. Bearings
**A mandrel often called dummy shaft
✔✔When you pour into a bearing and mandrel assembly make sure it has been heated
to 94* C before you remove any free water or surface moisture. ________ causes a
blow back or explosion.
A. Heat
B. Shrinkage
C. Casting
D. Free water - ✔✔D. Free water causes blow back or explosion
✔✔The top edge of the bearing must be _______ almost to the corners this channel is
the lubricant to the shaft
A. Keys
B. Cut
C. Relieved
D. Chamfered - ✔✔D. Chamfered
✔✔This prevents binding or clamping action on the shaft
A. Clearance
B. Tolerance
C. Deviation
D. Fitt - ✔✔A. Clearance
✔✔Shims are made for material that will not compress and is not affected by
A. Rotational speed
B. Axis diameter
C. Oil
D. Compression - ✔✔C. Oil
✔✔In general any shaft bearing assembly with constant One Direction load and rotation
bearing clearance can be from
A. Medium to light
B. Light to heavy
C. Medium to heavy
D. Medium to loose - ✔✔D. Medium to loose
ANSWERS RATED A+
✔✔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
✔✔K inducates what on the end of bearing identification? - ✔✔Tapered
K-common 1-in-12 taper
K30 larger bearings
✔✔A shield on bearing code is indicatd by? - ✔✔Letter Z
Rubbing seal-RS
✔✔P on bearing code indicates? - ✔✔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 - ✔✔C. Top
✔✔Solid bearings are frequently mounted in a _______ position
A. Awkward
B. Tight
C. Inverted
D. Delicate - ✔✔C. Inverted
✔✔Another type of friction bearing called split bearing has a two bolt pattern and a four
bolt pattern bearing. The two bolt is used for _________ and medium loads
A. Light
,B. Heavy
C. Super light
D. Metal - ✔✔A. Light
A four bolt bearing is used for medium to heavy loads
✔✔Angle bearings are used for drives in either of the following situations when the load
is applied parallel to or at a slight angle to the horizontal and
A. When load is bottom heavy
B. When load is too heavy
C. When the bearing is mounted on a horizontal support
D. When the bearing is mounted on a vertical support - ✔✔D. When the bearing is
mounted on a vertical support
✔✔Bearing joints are designed in three general styles
A. Flat, Gibb, short
B. Flat, Dhitt, sew
C. Gibb, Flat, Round
D. Flat, Gibb, Angle - ✔✔D. Flat, Gibb, Angle
✔✔When the joints have a little step they keep the cap from moving sideways this
bearing combines the rigidity of a solid block with the advantages of a split construction
A. Gibb
B. Roller
C. Flat
D. Angle - ✔✔A. Gibb
✔✔****When selecting liner material it should be softer than shaft material so it to form
slightly under heavy loads of good coefficient of friction wear resistant good, conductor
and readily available*** - ✔✔Metallic liner materials must have a little coefficient of
expansion
✔✔Nonmetallic liner materials are nylon polyurethanes and
A. Plastic
B. Copper
C. Babbit
D. Phenol laminates - ✔✔D phenyl laminates
****Metallic liner materials are Babbitt brass bronze aluminum*****
✔✔Tin based babbit with a very high tin content is sometimes called
A. Silver babbit
B. Shire babbit
C. Nickel
, D. Nickel babbit - ✔✔D. Nickel babbit
✔✔A mandrel is used to shape and size
A. Keys
B. Brakes
C. Bearings
D. Slots in bearings - ✔✔C. Bearings
**A mandrel often called dummy shaft
✔✔When you pour into a bearing and mandrel assembly make sure it has been heated
to 94* C before you remove any free water or surface moisture. ________ causes a
blow back or explosion.
A. Heat
B. Shrinkage
C. Casting
D. Free water - ✔✔D. Free water causes blow back or explosion
✔✔The top edge of the bearing must be _______ almost to the corners this channel is
the lubricant to the shaft
A. Keys
B. Cut
C. Relieved
D. Chamfered - ✔✔D. Chamfered
✔✔This prevents binding or clamping action on the shaft
A. Clearance
B. Tolerance
C. Deviation
D. Fitt - ✔✔A. Clearance
✔✔Shims are made for material that will not compress and is not affected by
A. Rotational speed
B. Axis diameter
C. Oil
D. Compression - ✔✔C. Oil
✔✔In general any shaft bearing assembly with constant One Direction load and rotation
bearing clearance can be from
A. Medium to light
B. Light to heavy
C. Medium to heavy
D. Medium to loose - ✔✔D. Medium to loose
