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Millwright 2nd Year > Chains&Sprokets > Flashcards

Chains&Sprokets Flashcards

0
Q

What are the two main designs of power transmission chains

A

Roller and silent chain

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1
Q

Power transmission chains are used as what kind of drive to transmit power between widely spaced shafts

A

Positive drive

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2
Q

Are the two basic types of links on a roller chain

A

Pin links and roller links

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3
Q

Two types of connecting links

A

Cotter pin and spring clip

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4
Q

What kind of chain is better for shock load

A

Heavy-duty chain

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5
Q

What kind of chain is used in agriculture business and electro mechanical devices

A

Light duty chain

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6
Q

Multiple strand chain consists of how many Single strand chains assembled on common pins

A

Multiple strand chain consists of two or more Single strand chains

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7
Q

What kind of chains are designed for applications that do not permit regular lubrication

A

Pre-lubricated chain

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8
Q

What kind of steel is used in corrosion resistant chain

A

Stainless steel

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9
Q

What kind of applications are synthetic chains used for

A

Food handling and processing equipment
computer equipment
office machines
instrument drives

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10
Q

What kind of lubrication is required in synthetic chain

A

No lubrication is required

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11
Q

What are some advantages of silent chain

A

High-efficiency and high horsepower
High speed performance
Positive Drive

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12
Q

What are some ways of removing old chain

A

Chain breaker
torch or
grinder

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13
Q

What kind of plate is more convenient to install but reduces the working capacity of the chain by 30%

A

The slip fitted plate

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14
Q

What is the correct way to install a spring clip

A

The closed end must be installed in the direction of the rotation

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15
Q

Referring to chain tension too much tension can cause what to happen

A

Reduced chain and sprocket life
over load the bearings on the driver and the driven
inadequate lubrication in the pins and bushings

16
Q

If you have too little tension what can happen

A

Chain whip and vibration
chain sagging
chain wrap up

17
Q

What can be a cause of pin failure

A

Lack of lubrication

18
Q

What is one way the chain can be elongated

A

Stretch due to overload

19
Q

What are toothed wheels that are designed to mesh with power transmission chains

A

Sprockets

20
Q

What is the minimum wrap angle that is recommended to carry a full load for which the chain is designated

A

120°

21
Q

However at what angle can a chain be designated to carry a full load if proper chain tension occurs and is closely maintained

A

90°

22
Q

Double pitch chain sprockets may have what required to fit between the link of a double pitched chain

A

Two times the number of teeth

23
Q

Hunting tooth sprockets have what

A

Odd number of teeth

24
Q

What kind of sprockets are common and intended for greater wear resistance

A

Hardened tooth sprockets

25
Q

Hub style sprockets are classified as type…..

A

A, B, C or D

26
Q

Does a type A sprocket come with or without a hub.

A

Without a hub

mounted onto any style hub with bolts

27
Q

Type B sprocket is a one-piece sprocket and hub on one side how should you mount this on a shaft

A

You should have the sprocket mounted closest to the bearing and the hub away from the bearing

28
Q

What allows a type C sprocket to provide more stability and add support to sprockets with large diameters

A

Hubs on both sides

29
Q

Explain the type D sprocket design

A

It is a split design bolted together

30
Q

What kind of hub provides the sprocket drive with overload protection in case of a jam

A

Shear pin hub

31
Q

What is a common rule when replacing a shear pin on a shear pin hub

A

To change a shear pin with one that has the same shear value

Millwright 2nd Year (10 decks)

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