Lubrication TPC

Question 1

A thin layer of lubricant between 2 surfaces enables 1 surface to _______ another.

Answer 1

Slide over

Question 2

By separating 2 surfaces slightly, a lubricant helps reduce _______.

Answer 2

Wear

Question 3

An oil cooler radiates heat into the air, usually through:

Answer 3

Metal fins

Question 4

At normal room temperature, grease is (a):

Answer 4

Semisolid

Question 5

What are the 4 physical forms of lubricants?

Answer 5

Liquid, solid, gas, and semisolid

Question 6

The most important property of a lubrication oil is its:

Answer 6

Viscosity

Question 7

Viscosity of an industrial lubrication oil is measured in:

Answer 7

Saybolt Universal Seconds

Question 8

Grease is used where liquid lubricant would leak or where frequent lubrication is not:

Answer 8

Possible

Question 9

When water enters a system and gets churned up with oil, it creates a(n):

Answer 9

Emulsion

Question 10

Grease is most commonly a __________ that has been thickened with _____.

Answer 10

Mineral oil; soap

Question 11

Oil additives that react with metal to form a sulfide or chloride coating are called:

Answer 11

Extreme-pressure additives

Question 12

In full-film lubrication, the moving surfaces are:

Answer 12

Completely separated from each other

Question 13

Detergent dispersant additives are ______________ containing metallic elements

Answer 13

Organic Salts

Question 14

Which type of additive is used to help a lubricant adhere better to metal surfaces?

Answer 14

Tackiness Agent

Question 15

A major advantage of using grease as a bearing lubricant is that grease…

Answer 15

Acts as a seal for the bearing housing

Question 16

Animal fat is sometimes included in ________________ oil to help it stick to the surface being lubricated.

Answer 16

Steam cylinder

Question 17

The 4 basic conditions that determine lubricant choice are load, temp, speed, and _________.

Answer 17

Environment

Question 18

What are the 2 most common additives used in general purpose oils?

Answer 18

Anti-oxidants and Rust preventitives

Question 19

Paraffin-base oils have a ______ viscosity and a ______ pour point.

Answer 19

High; high

Question 20

Naphthene-base oils are especially good lubricants for _________ because they contain little to no wax.

Answer 20

Refrigeration

Question 21

The function of soap in the grease is to:

Answer 21

Hold the oil

Question 22

Calcium-soap greases begin to ________ if the temp rises above 180 degrees

Answer 22

Dry-out

Question 23

Non-soap bases for greases include:

Answer 23

Clay minerals, gels, and organic complexes

Question 24

Most greases contain from ______ to ______% oil.

Answer 24

70-90%

Question 25

Greases are classified by their:

Answer 25

Type of thickener

Question 26

The ability of an EP grease to overcome short-cycle, high load conditions depends on the ________ of the ______.

Answer 26

Film strength; oil

Question 27

The primary charateristic of calcium-soap greases is their resistance to ______.

Answer 27

water

Question 28

The particles of “lamellar” additives are _________ in shape.

Answer 28

Thin and flat

Question 29

What is the most common additive used to give multi-purpose grease EP characteristics?

Answer 29

Sulfurized oil

Question 30

Which type of binding agent works best with dry film lubricants at temps over 600degrees F?

Answer 30

Ceramic

Question 31

One of the operating requirements of a lubricating device is its ability to:

Answer 31

Regulate lubricant flow

Question 32

Drip feeding oiling depends of ______ for its operation

Answer 32

Gravity

Question 33

The sump for a splash or ring-type natural lubrication system is:

Answer 33

Part of the machine housing

Question 34

Mist lubrication systems are similar in operation to air line lubrication, but they handle _____ lubricant at ______ pressure

Answer 34

More; lower

Question 35

Drip-feed greaser is _____ a method of manual grease lubrication. True or False?

Answer 35

NOT; true

Question 36

In a 2-line header lubrication system, the control valve:

Answer 36

Reverses the lubricant flow

Question 37

The tapered tube sight-glass can show the lubricant:

Answer 37

Flow AND flow rate

Question 38

The parallel tube sight-glass can show the lubricant:

Answer 38

FLOW ONLY

Question 39

In a single-line header lubrication system, lubricant is supplied to the metering device by the _____.

Answer 39

Pump

Question 40

In a progressive metering system, additional outlets can be added ______ at a time.

Answer 40

2

Question 41

Used lubricating oils can be made suitable for re-use by purification or :

Answer 41

Reclamation

Question 42

Final filtering of fluids can be accomplished by using:

Answer 42

Sintered material

Question 43

Lubricants stored outside during cold weather must be ____________ before use.

Answer 43

Brought inside for several days

Question 44

To purify lubricants, a centrifuge uses _______ to separate the water and oil.

Answer 44

Disks

Question 45

What is the difference between a centrifugal purifier and clarifier?

Answer 45

Clarifier does not remove water

Question 46

The main purpose of using route sheets for all lubricators is to:

Answer 46

Make sure all lubrication is performed

Question 47

One of the best ways to prevent lubricators from using wrong lubricant is to provide:

Answer 47

Color-coded fittings on the equipment

Question 48

The first step in computerizing a plant’s lubrication program is to:

Answer 48

Survey all lubrication requirements

Question 49

On a lubrication survey form, the _____________ tells the order in which machines appear on a route.

Answer 49

Sequence number

Question 50

A lubrication program change notice alerts the maintenance department that the:

Answer 50

Required oil change is due