True/False
Indicate whether the
statement is true or false.
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1.
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Leonardo da Vinci sketched a variety of different types of chains.
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2.
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During operation a phenomenon known as “chordal action” occurs in a
chain drive system because the chain link is a straight-line segment trying to follow the circular
path of the sprocket.
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3.
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There is a variety of different types of chain employed for both the purposes of
transmitting power and conveying.
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4.
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Sprockets do not have standard hub sizes.
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5.
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A maximum of 80 pitches is and appropriate center distance for most
applications.
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6.
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The recommended minimum teeth on a small sprocket for high speed applications is
17 teeth.
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7.
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Proper tension for drive chain is extremely important.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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8.
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These are “engineered class” chains.
a. | O-Ring Chains | c. | Double Pitch Chains | b. | Roller Chains | d. | Pintle Chains |
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9.
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These chains are designed for power transmission or conveying service.
a. | Mill Chains | c. | Self-Lubricating Chains | b. | Offset Sidebar
Chains | d. | Double Pitch
Chains |
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10.
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This is a ________ chain.  a. | Roller Chain | c. | Silent Chain | b. | Leaf Chain | d. | Drag Chain |
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11.
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This is a ________ chain.  a. | Roller Chain | c. | Silent Chain | b. | Leaf Chain | d. | Drag Chain |
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12.
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This is a ________ chain.  a. | Roller Chain | c. | Silent Chain | b. | Leaf Chain | d. | Drag Chain |
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13.
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This is a ________ chain.  a. | Roller Chain | c. | Silent Chain | b. | Leaf Chain | d. | Drag Chain |
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14.
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This is a ________ chain.  a. | Mill Chain | c. | Pintle Chain | b. | Offset Sidebar Chain | d. | Double Pitch
Chain |
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15.
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This is a ________ chain.  a. | Mill Chain | c. | Pintle Chain | b. | Offset Sidebar Chain | d. | Double Pitch
Chain |
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16.
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This is a ________ chain.  a. | Mill Chain | c. | Pintle Chain | b. | Offset Sidebar Chain | d. | Double Pitch
Chain |
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17.
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This is a ________ chain.  a. | Mill Chain | c. | Pintle Chain | b. | Offset Sidebar Chain | d. | Double Pitch
Chain |
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18.
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Which type of chain would be best for transfering power under shock
loads?
a. | Leaf Chains | c. | Pintle, Mill, and Drag Chains | b. | Roller
Chains | d. | Double Pitch
Chains |
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19.
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This is a type ____ sprocket. 
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20.
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This is a type ____ sprocket. 
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21.
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This is a type ____ sprocket. 
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22.
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This is a type ____ sprocket. 
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Completion
Complete each
statement.
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23.
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The ______ drive system consists of a driving sprocket, one or more driven
sprokets, and an endless chain consisting of individual links connected to form a strand.
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24.
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A _______ is a wheel that has evenly spaced, uniformly shaped teeth on the
outside diameter that provide positive engagement with the chain.
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25.
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Power, originating as ________, is transmitted from the drive sprocket mounted
on the shaft of the prime mover and connected to one or more driven sprockets by the chain.
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26.
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_________ drive chain is essentially a connected series of bearings articulating
around an axis point.
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27.
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Roller chains that are used for _________ handling are available with numerous
types of attachments for moving different kinds of products.
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28.
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___________ chains are constructed by placing joined plastic table tops onto a
base roller chain to form a two-piece construction.
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29.
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___________ usually consist of the body (plate), rim (teeth), and a hub that
isattached to a shaft by some means.
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30.
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_________ Sprockets are used to control tension and to prevent whipping on
vertical drives and long spans.
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31.
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A center distance of ___ to 50 pitches is good design practice.
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32.
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In a slow speed application, 12 teeth; for a medium speed, ____ teeth; and for
high-speed applications, 25 teeth.
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33.
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Drives should be inspected after the initial 100 hours of operation, followed by
_____ hour interval checks.
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34.
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The recommended maximum ratio under normal operating conditions is ____ for a
single reduction drive.
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35.
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Sprocket axial alignment can be checked with a ____________ placed across the
faces of the sprocket plates.
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36.
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Calculate the chain length for the following chain drive, PD1=4 inches, PD2=8
inches and CD=28 inches.
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37.
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Check the chain tension so that the slack side span has ___ to 6% midspan
movement in horizontal drives and 2 to 3% movement in vertical drives.
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38.
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The purpose of lubrication is to ______ wear between moving parts.
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39.
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The type of lubrican applied should be a good grade of clean __________ oil with
few additives, and free flowing at the prevailing temperatures.
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Matching
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a. | O-ring chain | d. | Double Pitch Roller Chain | b. | Multiple Strand
Roller Chain | e. | Roller
Chain | c. | Self-Lubricating Roller Chain | f. | Heavy Series Roller
Chain |
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40.
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Similar to standard roller chain, except that the pitch is twice as
long.
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41.
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Has oil impregnated bushings.
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42.
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Have pitches and part numbers similar to standard chain, but they have thicker
side plates.
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43.
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The most common type of chain used in industry.
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44.
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Made up of two or more strands, is constructed with common pins across the full
width.
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45.
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Designed for applications that do not permit adequate lubrication.
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a. | Shear Pin Sprocket | c. | Split Sprocket | b. | Double Pitch Sprockets | d. | Sectional Rim
Sprockets |
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46.
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The rim can be replaced without distrubing the chain.
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47.
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A sprocket that is free to rotate on the shaft or hub when the shear pin
breaks.
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48.
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Sprockets for applications that require mounting between bearings, or in a
“trapped” location.
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49.
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Sprockets that are made to run with long pitch engineering class
chains.
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a. | Bath, Disc, or Slinger Lubrication | c. | Manual and Drip Feed
Lubrication | b. | Oil Steam Lubrication |
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50.
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Method of forced lubrication.
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51.
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Requires that the lower strand of the chain is run through a sump of
oil.
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52.
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Oil is applied perodically with a brush, spout, or drip mechanism.
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