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Final > Lube > Flashcards

Lube Flashcards

1
Q

Lubricant is any substance that reduces?

A

Friction by sliding

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2
Q

Lubricant film, does what

A

Two surfaces to never actually touch

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3
Q

Another reason for lubrication is to help what

A

Dampen mechanical shock

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4
Q

Oil coolers have what to radiate heat

A

Metal fins

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5
Q

Grease does what when left exposed

A

Develops a skin to keep dirt out

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6
Q

Crude oil contains what

A

Over a million different hydrocarbon compounds

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7
Q

The most important property of lubricating oil is

A

It’s viscosity

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8
Q

Standards for industrial lubricants in America are

A

SUS saybolt universal seconds

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9
Q

Greases are chosen for applications where

A

Frequent lube is not possible

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10
Q

The term used for grease when it’s temp causes the grease to change from a solid to a semisolid is what

A

Dropping point or melting point

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11
Q

Foam inhibitors used in hydraulic systems are called

A

Antifoam agents

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12
Q

A chemical reaction with metal surfaces a thin coating of metal sulfide or chloride forms on the metal, this is called

A

Extreme pressure additives

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13
Q

What keeps water from breaking up into droplets by keeping the waters film of contaminant intact

A

Demulsifiers

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14
Q

What has mostly impurities, metal oxides, and gases from the air

A

Boundary lubrication

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15
Q

When two moving surfaces are completely separated from each other it has what type of lubricant

A

Full film lubrication

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16
Q

The higher the ratio of a paraffin base oils to naphthene base oils the…

A

Higher the viscosity index of a given blend it will be

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17
Q

What kind of oil is so good it’s used as the standard to measure other oils

A

Turbine oil

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18
Q

What is the most essential additive of a hydraulic system oil

A

Antifoam additive

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19
Q

Spindle oils are …

A

Premium oils low in viscosity

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20
Q

What kind of oil is sometimes compounded with animal fat to make them stick to the surface being lubricated

A

Steam cylinder oils

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21
Q

I What is the purpose for soap or thickener in a grease

A

It serves as a holding agent for the oil, it releases the oil at a slow rate

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22
Q

In applications where temp rises above 180 the water content begins to disappear and dry out what type of grease

A

Calcium soap grease

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23
Q

What kind of grease is great with contact with water

A

Calcium soap grease

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24
Q

What kind of grease is used in the absence of water

A

General purpose grease like sodium soap grease

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25
Q

The main disadvantage to general multi purpose grease is what

A

They do not work well around water

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26
Q

The best all around grease is what

A

Lithium soap grease

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27
Q

Non soap thickeners, metal based complexes are

A

Organic molecule that traps metal ions in a lattice of atoms

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28
Q

Additives in grease do what

A

They keep grease from undergoing chemical changes/makeup

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29
Q

EP greases depend on what for high film strength

A

Lubricating oil component that contains additives

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30
Q

Most commonly used grease for water repellent are

A

Calcium soap base

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31
Q

Thin plate like flakes in a grease is what kind of additive

A

Lamellar in nature

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32
Q

Synthetic liquid lubricant is what kind of compound

A

Polymer

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33
Q

One kind of lube delivery is the

A

Regulation of the lube

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34
Q

Drip feeding oiling is referred to as

A

Gravity lubrication

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35
Q

In natural lubrication what is used as an oil sump for the bath

A

A portion of the machine housing

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36
Q

In pressure circulating systems what kind of pump is most likely used

A

Gear type pump

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37
Q

Oil mist lube can give you (blank) quantities of oil and operates on very (blank) air pressure

A

Large,\ low

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38
Q

In certain systems the pump will both…

A

Increase pressure and meter the oil

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39
Q

A force feed lubricator is regulated how

A

Lube discharged is controlled be a regulating screw mounted on the opposite side of the pivot point of the piston drive

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40
Q

Indirect metering systems…

A

Have separate metering devices to meter the oil

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41
Q

What reverses the lube flow

A

Control valve on the discharge side of the pump

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42
Q

Progressive metering is also referred to as

A

Centralized lubrication

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43
Q

If lube is stored outside what must be taken into consideration

A

The environment

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44
Q

Grease put into a system should be done at what temp

A

Room temp

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45
Q

Reclamation is what

A

Removing oil to be treated and reused

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46
Q

The most effective way to separate contaminates from oil is

A

Gravity settling

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47
Q

Filter elements used for the final filtering are made of

A

Sintered metal

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48
Q

What is the single greatest cause of lube failure

A

Contamination

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49
Q

An oiler route is what

A

Done to make sure no machines are skipped

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50
Q

One of the best ways to keep from using the wrong lube on a machine is to

A

Color code the fittings

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51
Q

The frequency of required lubing in a 5 day work week, monthly means how many days between lubing

A

20

52
Q

Lubricants can take the form of liquid and ….

A

Gases, solids, and semisolids

53
Q

The main purpose for lube is

A

Refusing friction

54
Q

Resistance to overcome when starting motion across one part to another is

A

Static friction

55
Q

The cooling effect from a lube is mainly from its ability to

A

Reduce friction

56
Q

Corrosion can be prevented is bare metal can be shielded from

A

Oxygen

57
Q

Additives in oil prevent corrosion by

A

Neutralizing acids

58
Q

Mineral oils are better than vegetable oils because

A

They are more stable

59
Q

Liquid formed by the condensation of crude oil vapors is called

A

Distillate

60
Q

In refineries vapors from boiling crude oil are collected where

A

Various levels in a fractionating tower

61
Q

The organic compounds that make up petroleum are classified as

A

Hydrocarbons

62
Q

Most molecules in crude oil are

A

Long and chain like

63
Q

The SAE number of a oil is its

A

Viscosity

64
Q

Light oils are for

A

High speed low pressure

65
Q

What is the hardest or the stiffest grease number

A

6

66
Q

What accurately describes the load on a lube

A

Pressure

67
Q

Oils that prevent or retard the formation of sludge contain what

A

Oxidation inhibitor

68
Q

Extreme pressure additives contain chemicals that

A

React with metal surfaces

69
Q

Carbon and varnish deposits are kept from forming on metal surfaces by

A

Detergent dispersants

70
Q

What is the purpose of an emulsifying agent

A

Keeps water from coming in contact with metal

71
Q

Best lube film type for reducing friction

A

Full film lube

72
Q

Hydrostatic full film lube is often accomplished with the aid of what

A

Air pump

73
Q

High speed light duty bearings require

A

Light oils

74
Q

As a rule grease is used for lubricating plain bearings when shaft speeds are

A

Less then 300 RPM

75
Q

What is the most common cause of lube problems in antifriction bearings

A

Too much lube

76
Q

Naphthene base oils are good for what

A

Refrigeration equip

77
Q

The higher the ratio in oils the better the

A

Viscosity index

78
Q

Steel mill circulating oils need

A

Resistance to heat and water

79
Q

Machine oils are useful in applications where

A

Oil loss is steady

80
Q

Way oils are a type of

A

Machine oil

81
Q

Refrigeration oils include a low

A

Pour point

82
Q

Most internal combustion engines oils are

A

Paraffin base oils

83
Q

Oils used in low temp or high speed applications should have a blank viscosity

A

Low

84
Q

What is the usual percentage of oil content in a grease

A

70 to 90%

85
Q

Channeling in a grease bearing is caused by what

A

The grease being too heavy

86
Q

Every soap is a combination of a metal ion with a

A

Fatty acid

87
Q

Calcium soap greases are known for their

A

Resistance to water

88
Q

Barium soap grease should never be used in

A

High speed applications

89
Q

Greases resistant to both water and temp extremes are

A

Lithium soap greases

90
Q

Silica gel grease does not

A

Soften or melt

91
Q

Bentonite grease has the best

A

Water resistance

92
Q

Frequent greasing of a plain journal bearings depends mostly on the

A

Bearing speed and operating temp

93
Q

Additives that act alone as a lube appear in the form of

A

A dry film lube

94
Q

Tallow sperm oil and rapeseed oil are among the additives used in grease to

A

Provide additional oiliness to the grease

95
Q

Hydrophobic additives are actually

A

Water repellent compounds

96
Q

Graphite mica and borax are referred to as

A

Lamellar solids

97
Q

Silicone greases are used in bearings that are

A

Sealed

98
Q

Dry film lube is typically applied as a

A

Spray paint

99
Q

Product contamination caused by leaking bearing seals in a process machine is virtually eliminated by

A

Dry film lube

100
Q

For temps below 600 which type of binding agent works best with a dry film lube

A

Plastic

101
Q

A good lube to use on electrical switches and relays is

A

Powdered molybdenum disulfide

102
Q

How should a lubricating device be filled or adjusted

A

Safely

103
Q

What cost factor should be considered when a lube device is purchased

A

Initial and secondary

104
Q

In a drip feed lubricator the flow is controlled by

A

A needle valve

105
Q

The ring on a ring oiler is blank times the diameter of the shaft on which it rotates

A

1.5

106
Q

What kind of system are pressurized oil lube that have internal sumps with external pumps and piping

A

Wet sump systems

107
Q

What types of pumps are used in pressure lube systems

A

Positive displacement

108
Q

Oil mist lube systems should operate at what pressure

A

5-10 psi

109
Q

A sight glass in a lubricator always indicates what

A

Flow

110
Q

Sight glass indicators are usually installed on the suction side of what

A

High pressure systems

111
Q

What other name is given to metered lubrication

A

Indirect

112
Q

Metered lubrication is also called header or

A

Progressive systems

113
Q

In a two line header system the lines are vented alternately by

A

A control valve

114
Q

The pump is usually stopped in a progressive system as lube passes which outlet port

A

Last

115
Q

The best method for moving 55 gallon drums are by

A

Pallet

116
Q

Before you open an oil drum make sure the top is

A

Clean

117
Q

How can you prevent the build up of old stock

A

Place new stock behind old stock

118
Q

The continuous processing of oil to remove all contaminants is known as

A

Purification

119
Q

What is the purpose of the centrifuge in a lubrication system

A

Separate contaminants and purify

120
Q

Simple oil strainers are made of

A

Wire screen

121
Q

Porous stone or sintered metal filters can exclude particles from fluids in the range of

A

.5 to 2 microns

122
Q

Before you can have an efficient lubrication program you must first

A

Survey the lubrication requirements

123
Q

The machine ID number is usually the same as the

A

Inventory number

124
Q

Even a computerized lube management system may fail unless you also have

A

Capable employees at all levels

125
Q

Computerized lube management systems need to be flexible because

A

Floor plans may be revised or new equipment added

126
Q

A change card is

A

An alert for the oiler to drain and refill

127
Q

Discrepancy reports are written by the

A

Oiler

Final (12 decks)

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