Chapter 11 - Chain Drives

Question 1

How do chain drives compare to belts and gear drives?

Answer 1

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Question 2

Briefly describe the following:

- roller links

Answer 2

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Question 3

Briefly describe the following:

- pin links

Answer 3

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Question 4

Briefly describe the following:

- standard roller chain

Answer 4

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Question 5

Briefly describe the following:

- connecting links

Answer 5

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Question 6

Briefly describe the following:

- offset links, both one-pitch and two-pitch

Answer 6

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Question 7

What is the reason for standardizing all dimensions in roller chains?

Answer 7

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Question 8

What type and size of roller chain are the following:

- #21?

Answer 8

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Question 9

What type and size of roller chain are the following:

- #45?

Answer 9

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Question 10

What type and size of roller chain are the following:

- #51?

Answer 10

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Question 11

What type and size of roller chain are the following:

- #60-2H?

Answer 11

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Question 12

What are the advantages of small pitch multiple-strand roller chains on high speed drives in comparison to single large pitch chain?

Answer 12

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Question 13

Why is accurate alignment important on multi-chain drives?

Answer 13

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Question 14

What applications are suitable for double-pitch chains?

Answer 14

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Question 15

What type and size of chain is a 2050?

Answer 15

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Question 16

What application is best suited to silent chain?

Answer 16

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Question 17

What keeps silent chain from sliding off the sprocket?

Answer 17

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Question 18

Briefly describe the four groups of hubs - A, B, C and D

Answer 18

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Question 19

How are straight bore sprockets received from the manufacturer?

Answer 19

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Question 20

What types of sprockets are used with double-pitch chain?

Answer 20

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Question 21

What are the merits of

roller-chain-drives?

Answer 21

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Question 22

How much wrap is considered minimum on the small sprocket?

Answer 22

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Question 23

What circumstances indicate the need for a heat treated drive sprocket?

Answer 23

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Question 24

What circumstances indicate the need for countershaft or jackshaft drives?

Answer 24

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Question 25

What is the recommended slack for horizontal one-direction chain drive and for vertical chain drive?

Answer 25

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Question 26

Where are idlers located to take up slack and support chain drives?

Answer 26

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Question 27

When are guide rails used to support drive chains?

Answer 27

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Question 28

Describe the procedure for aligning shafts and sprockets

Answer 28

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Question 29

What grades of oil are used to oil roller chain?

Answer 29

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Question 30

What methods are used, and at what intervals are roller chain lubricated?

Answer 30

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Question 31

What are the tell-tale signs of misalignment?

Answer 31

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Question 32

How does one diagnose:

- chain wear?

Answer 32

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Question 33

How does one diagnose:

- sprocket wear?

Answer 33

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Question 34

What may be the causes of excessive slack?

Answer 34

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Question 35

Why should sprocket condition be assessed when installing a new chain?

Answer 35

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Question 36

How is the length of the new chain calculated?

Answer 36

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Question 37

Briefly describe how a roller chain is taken apart?

Answer 37

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Question 38

Describe how roller chain is joined

Answer 38

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Question 39

What are the causes of the following problems:

- noisy drive?

Answer 39

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Question 40

What are the causes of the following problems:

- rapid wear?

Answer 40

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Question 41

What are the causes of the following problems:

- chain climbs sprockets?

Answer 41

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Question 42

What are the causes of the following problems:

- stiff chain?

Answer 42

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Question 43

What are the causes of the following problems:

- broken chain sprockets?

Answer 43

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