WorksheetsMechanical Drives 3 Plain Bearings
Total questions: 34
Worksheet time: 17mins
_______________ bearings, sometimes called ways or guides, provide a bearing surface for mechanisms that move in a straight line.
Deep grooved ball
Angular ball
Linear
Compressed
Journal bearings are designed to be used for _______________ loads.
Horizontal
Vertical
Radial
Axial
Plain _____________ bearings are used only where axial loads are present.
Split
Thrust
Ball
Linear
Plain bearings are divided into two general categories: Solid bearings and ________________ bearings.
Multiple
Coated
Angular
Split
A Bushing is another name for a plain journal bearing.
True
False
______________ is used where full-film lubrication is not possible.
Oil
Plastic
Grease
Seals
Oil can lubrication is used to apply oil directly on the components or into a(n) __________________
oil cup
Component
Reservoir
Soda
In a pressure feed system, oil is pumped from a(n) __________________.
Sump
Oil well
Oil can
Valvoline container
The _____________ lubrication system requires a great deal of space.
Spray
Oil can
Oil bath splash
Grease
In a type 1 plain bearing (bronze), the term "Type 1" refers to the oil ___________ inside the bearing.
Velocity
Type
Groove
Temperature
Fatigue resistance is the ability of the bearing material to withstand repeated application of _______________.
Stress
Oil
Grease
Paint
Embeddability is the ability of the bearing lining material to _____________ slight dirt particles.
Resist
Absorb
Clean
Smash
_______________________ is a relatively soft material.
Aluminum
Steel
Bronze
Babbitt
______________________ bearings are constructed from fine metal particles.
Bronze
Aluminum
Babbitt
Sintered metal
The load carrying ability of a plain bearing material can be expressed as a(n) _________________________.
PC Factor
PA Factor
PD Factor
PV Factor
A hot bearing is usually a sign of a bearing in ____________________.
Distress
Failure
Misalignment
The hot desert
A noise in a plain bearing is usually a sign that the bearing is about to ________________.
Go on strike
Fail
Engage
Stop
A common source of vibration in a plain bearing is a bent _____________________.
Ball
Sleeve
Shaft
Race
Plain bearings can accept ___________________ misalignment.
Some
A lot
Very little
No
A(n) __________________ is a type of bearing system fault.
Failed race
Misalignment
Bent shaft
Knocking noise
Plain bearing maintenance includes checking for dirt, the best solution is usually to remove the source of the dirt or _____________________. (Page 51)
Use a different type of bearing
Use detergent oil
Flush and clean daily
Slow the shaft down
Sintered bronze bearings require ___________________. (Page 15)
Grease lubrication
Oil lubrication for an oil cup
Soaking the bearing in oil before installation
No additional lubrication
When selecting a plain bearing lubrication system, a general rule of thumb is heavier oils or grease are recommended for _________________________. (Page 25)
High loads and low speeds
Low loads and low speeds
High loads and high speeds
High speeds and high loads
The purpose of the groove in a Type 1 bearing is to ____________________. (Page 13)
Reduce vibration at high speeds
Spread oil over the surface of the bearing
Absorb heat from the lubricant
Provide an oil reserve within the bearing
Shaft clearance in a plain bearing installation is the ____________________. (Page 46)
Difference between bearing runout and bearing end play
Difference between the shaft diameter and the bearing bore
Distance from the shaft to any fixed object
Difference between the maximum shaft diameter and the minimum shaft diameter
The three types of plain bearings used in industry today are: _______________, ______________, and ____________________. (Page 5)
Flange bearings, Pillow Block bearings, Segmented bearings
Journal bearings, thrust bearings, linear bearings
Fixed bearings, floating bearings, universal bearings
Single, duplex, triple
Babbitt is an alloy of ___________. (Page 34)
Steel and copper
Bronze, copper and lithium
Tin, lead, and antimony
Chromium, copper, and bronze
When inspecting and troubleshooting a plain bearing system it is best to use an aid such as a table that lists faults and probable causes plus _____________________. (Page 54)
Machine number
Lubrication type
Corrective action
Temperature variations
The best way to install a plain bearing in a bearing housing is using ________________.(Page 16)
A hammer
A bearing heater
An arbor press
A drill press
When selecting a plain bearing for a given installation, the first step is to calculate the _____________ factor. (Page 37)
P,P, and V
P,V, and PV
V,V, and VP
Dia x length
The four basic components of a plain bearing assembly are: bearing, bearing housing, ________________, and lubricant. (Page 9)
Sleeve
Race
Journal
Cone
The PV factor in a plain bearing material is an indication of its ___________________.(Page 37)
Thermal conductivity
Fatigue resistance
Corrosion resistance
Load carrying ability
A bearing is a device that reduces __________________ between two surfaces while supporting a load. (Page 8)
Heat build up
Friction
Torque
Vibration
When specifying plain bearings there are typically four features described: the manufacturers code, bore, outside diameter, and ______________________. (Page 28)
Shape
Tolerance
Porosity
Length
