Chapter 6 - Lubrication Flashcards by Trish Struass | Brainscape

Q

What is the purpose of lubrication?

A

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Q

Name and describe the types of friction.

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Q

How is oil attracted to a surface to be lubricated?

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Q

Describe how oil will separate two metal surfaces sliding over one another.

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Q

Describe oiliness.

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Q

Describe how viscosity affects the lubricating qualities of oil

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Q

How is minimum power loss achieved through lubrication?

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Q

How does temperature affect viscosity?

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Q

Describe how viscosity is measured using the Saybolt viscosimeter

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Q

Which oil will change viscosity more due to temperature change

an oil with a VI of 20 or
an oil with a VI of 100?

A

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Q

Describe the oil wedge theory

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Q

Describe boundary lubrication

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Q

How is oxidation of oil controlled?

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Q

How is air (foam) controlled in oil?

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Q

How is water controlled in lubricating oils?

A

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Q

How is wear and load capacity enhanced in lubricating oils?

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Q

Why are extreme pressure oils never mixed with other oils?

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Q

What is the purpose of detergents and dispersants in oils and what oils are they used in?

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Q

Describe the following wasted oil or once-through system:

- squirt can

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Q

Describe the following wasted oil or once-through system:

- wick-feed oil

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Q

Describe the following wasted oil or once-through system:

- drip-feed Oiler

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Q

What quality of oil is used in the following system:

- once-through systems

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Q

What quality of oil is used in the following system:

- enclosed lubricating systems

A

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Q

Describe he following enclosed lubricating system:

- ring oiler

A

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Q

Describe he following enclosed lubricating system:

- splash lubrication

A

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Q

Describe he following enclosed lubricating system:

- oil bath lubrication

A

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Q

Describe he following enclosed lubricating system:

- re-circulating lubrication

A

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Q

Describe he following enclosed lubricating system:

- oil mist lubrication

A

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Q

How does overfilling the lubricating system affect its operation?

A

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Q

Describe both accurate and approximate methods of quality checks on used lubricating oil

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Q

What is grease composed of?

A

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Q

What properties of grease can be attributed to the thickener?

A

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Q

Describe the following:

- complex soap greases

A

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Q

Describe the following:

- non-soap greases

A

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Q

Describe the following:

- multi-purpose greases

A

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Q

Describe the following:

- extreme pressure greases (EP)

A

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Q

How does the National Grease Institute (NLGI) grade grease?

A

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Q

Describe the following:

- dropping point

A

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Q

Describe the following:

- directional fluidity

A

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Q

What factors are considered when choosing a grease for a certain application?

A

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Q

Describe how to hand-pack a bearing

A

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Q

How are grease guns advantageous over hand-packing?

A

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Q

How is metering achieved on a spring-compression grease cup?

A

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Q

Describe the operating principles of automatic lubricators

A

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Q

What conditions should be considered for the lubrication of open gears?

A

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Q

What factors should be considered for the lubrication of enclosed gears?

A

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Q

What type of lubricant should be considered for work-wheel and hyoid gears?

A

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Q

What should be watched for on a trial run with a new lubricant?

A

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Q

What lubricant should be used for high-speed operation and extreme temperatures?

A

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Q

What is the recommended oil level for oil bath lubricated ball bearings and why is it important?

A

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Q

Compare grease to oil as a lubricant.

A

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Q

What are the functions of the lubricant during machine operations?

A

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Q

What type of oil are used for machining operations?

A

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Q

What procedures should be followed when using cutting fluids?

A

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Q

What safety precautions should be used when handling lubricants?

A

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Q

What body or bodies regulate the handling, storage and disposal of lubricants?

A

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