Question 1

Define sprocket.

Accepted Answer

Sprockets are toothed wheels that mate with a chain to transmit power from one shaft to another.

Question 2

Why is correct lubrication of chain drives important?

Accepted Answer

. Lubrication is important in maintaining long life for chain drives and is governed by the speed and function of the machine.

Question 3

List at least five factors that are involved in the selection of a correct belt drive.

Accepted Answer

. Horsepower of driving shaft, speed of driving shaft, service conditions, type of machine, center distance between shafts, belt length, number of belts required

Question 4

What is the belt velocity for the driver described in Question 14 if the pitch diameter is 4.5 in.?

Accepted Answer

The answer of What is the belt velocity for the...

Question 5

What is the ratio of the driver pulley to the driven pulley if the driver operates at 2400 rpm and the driver operates at 600 rpm?

Accepted Answer

The answer of What is the ratio of the driver...

Question 6

What is the center distance between shafts in chain pitches if the center distance measures 16 in. and a No. 25 chain is used?

Accepted Answer

The answer of What is the center distance between shafts...

Question 7

Most V-belts function most effectively at what speed and ChaPTer 17 BelT and Chain temperature? drives ProBlems

Accepted Answer

V belts function most effectiv

Question 8

Are the terms pully and sheave used interchangeably?

Accepted Answer

Yes; both guide the belt in it

Question 9

What is the most commonly used power chain in industry?

Accepted Answer

The answer of What is the most commonly used power...

Question 10

What would be three disadvantages of belt drives?

Accepted Answer

Not as durable as gears and chains; pron

Question 11

Identify at least three methods of lubricating chain drives.

Accepted Answer

. Type A: Manual or drip lubri

Question 12

Describe the typical use for flat belts. templates

Accepted Answer

. Flat belts are used where hi

Question 13

List at least five advantages of gear drives.

Accepted Answer

More rugged and durable; more efficient;

Question 14

Define pitch line.

Accepted Answer

Pitch line is the only portion

Question 15

What is the function of an idler in belt drive design?

Accepted Answer

The idler is used to

Question 16

The preferred position of chain drive shafts is in a horizontal line or on a line inclined not more than how many degrees?

Accepted Answer

The answer of The preferred position of chain drive shafts...

Question 17

Why are adjustable motor bases used in belt drives? Drafting

Accepted Answer

. Adjustable motor b

Question 18

List at least four of the items that must be determined when designing roller chain drives.

Accepted Answer

. Selecting the sprocket sizes

Question 19

When establishing chain length in chain pitches, why is it recommended that the chain length in chain pitches be rounded up to an even number of chain pitches?

Accepted Answer

. Pitches must be the next hig

Question 20

Name the three main categories of V-belts.

Accepted Answer

Automotive

Exam 17: Belt and Chain Drives

Define sprocket.

Why is correct lubrication of chain drives important?

List at least five factors that are involved in the selection of a correct belt drive.

What is the belt velocity for the driver described in Question 14 if the pitch diameter is 4.5 in.?

What is the ratio of the driver pulley to the driven pulley if the driver operates at 2400 rpm and the driver operates at 600 rpm?

What is the center distance between shafts in chain pitches if the center distance measures 16 in. and a No. 25 chain is used?

Most V-belts function most effectively at what speed and ChaPTer 17 BelT and Chain temperature? drives ProBlems

Are the terms pully and sheave used interchangeably?

What is the most commonly used power chain in industry?

What would be three disadvantages of belt drives?

Identify at least three methods of lubricating chain drives.

Describe the typical use for flat belts. templates

List at least five advantages of gear drives.

Define pitch line.

What is the function of an idler in belt drive design?

The preferred position of chain drive shafts is in a horizontal line or on a line inclined not more than how many degrees?

Why are adjustable motor bases used in belt drives? Drafting

List at least four of the items that must be determined when designing roller chain drives.

When establishing chain length in chain pitches, why is it recommended that the chain length in chain pitches be rounded up to an even number of chain pitches?

Name the three main categories of V-belts.

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