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Mechanical Drives 3 Plain Bearings

Total questions: 34

Worksheet time: 17mins

Name
Class
Date
1.

_______________ bearings, sometimes called ways or guides, provide a bearing surface for mechanisms that move in a straight line.

a)

Deep grooved ball

b)

Angular ball

c)

Linear

d)

Compressed

2.

Journal bearings are designed to be used for _______________ loads.

a)

Horizontal

b)

Vertical

c)

Radial

d)

Axial

3.

Plain _____________ bearings are used only where axial loads are present.

a)

Split

b)

Thrust

c)

Ball

d)

Linear

4.

Plain bearings are divided into two general categories: Solid bearings and ________________ bearings.

a)

Multiple

b)

Coated

c)

Angular

d)

Split

5.

A Bushing is another name for a plain journal bearing.

a)

True

b)

False

6.

______________ is used where full-film lubrication is not possible.

a)

Oil

b)

Plastic

c)

Grease

d)

Seals

7.

Oil can lubrication is used to apply oil directly on the components or into a(n) __________________

a)

oil cup

b)

Component

c)

Reservoir

d)

Soda

8.

In a pressure feed system, oil is pumped from a(n) __________________.

a)

Sump

b)

Oil well

c)

Oil can

d)

Valvoline container

9.

The _____________ lubrication system requires a great deal of space.

a)

Spray

b)

Oil can

c)

Oil bath splash

d)

Grease

10.

In a type 1 plain bearing (bronze), the term "Type 1" refers to the oil ___________ inside the bearing.

a)

Velocity

b)

Type

c)

Groove

d)

Temperature

11.

Fatigue resistance is the ability of the bearing material to withstand repeated application of _______________.

a)

Stress

b)

Oil

c)

Grease

d)

Paint

12.

Embeddability is the ability of the bearing lining material to _____________ slight dirt particles.

a)

Resist

b)

Absorb

c)

Clean

d)

Smash

13.

_______________________ is a relatively soft material.

a)

Aluminum

b)

Steel

c)

Bronze

d)

Babbitt

14.

______________________ bearings are constructed from fine metal particles.

a)

Bronze

b)

Aluminum

c)

Babbitt

d)

Sintered metal

15.

The load carrying ability of a plain bearing material can be expressed as a(n) _________________________.

a)

PC Factor

b)

PA Factor

c)

PD Factor

d)

PV Factor

16.

A hot bearing is usually a sign of a bearing in ____________________.

a)

Distress

b)

Failure

c)

Misalignment

d)

The hot desert

17.

A noise in a plain bearing is usually a sign that the bearing is about to ________________.

a)

Go on strike

b)

Fail

c)

Engage

d)

Stop

18.

A common source of vibration in a plain bearing is a bent _____________________.

a)

Ball

b)

Sleeve

c)

Shaft

d)

Race

19.

Plain bearings can accept ___________________ misalignment.

a)

Some

b)

A lot

c)

Very little

d)

No

20.

A(n) __________________ is a type of bearing system fault.

a)

Failed race

b)

Misalignment

c)

Bent shaft

d)

Knocking noise

21.

Plain bearing maintenance includes checking for dirt, the best solution is usually to remove the source of the dirt or _____________________. (Page 51)

a)

Use a different type of bearing

b)

Use detergent oil

c)

Flush and clean daily

d)

Slow the shaft down

22.

Sintered bronze bearings require ___________________. (Page 15)

a)

Grease lubrication

b)

Oil lubrication for an oil cup

c)

Soaking the bearing in oil before installation

d)

No additional lubrication

23.

When selecting a plain bearing lubrication system, a general rule of thumb is heavier oils or grease are recommended for _________________________. (Page 25)

a)

High loads and low speeds

b)

Low loads and low speeds

c)

High loads and high speeds

d)

High speeds and high loads

24.

The purpose of the groove in a Type 1 bearing is to ____________________. (Page 13)

a)

Reduce vibration at high speeds

b)

Spread oil over the surface of the bearing

c)

Absorb heat from the lubricant

d)

Provide an oil reserve within the bearing

25.

Shaft clearance in a plain bearing installation is the ____________________. (Page 46)

a)

Difference between bearing runout and bearing end play

b)

Difference between the shaft diameter and the bearing bore

c)

Distance from the shaft to any fixed object

d)

Difference between the maximum shaft diameter and the minimum shaft diameter

26.

The three types of plain bearings used in industry today are: _______________, ______________, and ____________________. (Page 5)

a)

Flange bearings, Pillow Block bearings, Segmented bearings

b)

Journal bearings, thrust bearings, linear bearings

c)

Fixed bearings, floating bearings, universal bearings

d)

Single, duplex, triple

27.

Babbitt is an alloy of ___________. (Page 34)

a)

Steel and copper

b)

Bronze, copper and lithium

c)

Tin, lead, and antimony

d)

Chromium, copper, and bronze

28.

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)

a)

Machine number

b)

Lubrication type

c)

Corrective action

d)

Temperature variations

29.

The best way to install a plain bearing in a bearing housing is using ________________.(Page 16)

a)

A hammer

b)

A bearing heater

c)

An arbor press

d)

A drill press

30.

When selecting a plain bearing for a given installation, the first step is to calculate the _____________ factor. (Page 37)

a)

P,P, and V

b)

P,V, and PV

c)

V,V, and VP

d)

Dia x length

31.

The four basic components of a plain bearing assembly are: bearing, bearing housing, ________________, and lubricant. (Page 9)

a)

Sleeve

b)

Race

c)

Journal

d)

Cone

32.

The PV factor in a plain bearing material is an indication of its ___________________.(Page 37)

a)

Thermal conductivity

b)

Fatigue resistance

c)

Corrosion resistance

d)

Load carrying ability

33.

A bearing is a device that reduces __________________ between two surfaces while supporting a load. (Page 8)

a)

Heat build up

b)

Friction

c)

Torque

d)

Vibration

34.

When specifying plain bearings there are typically four features described: the manufacturers code, bore, outside diameter, and ______________________. (Page 28)

a)

Shape

b)

Tolerance

c)

Porosity

d)

Length