CHAIN DRIVES

Question 1

Define the three (3) basic

components of a chain drive

Answer 1

Chain
Driver Sprocket
Driven Sprocket

Question 2

Describe how to calculate sprocket ratio

Answer 2

Number of teeth on Driven over Number of teeth on Driver.

NDVN ÷ NDVR

Question 3

List four (4) types of Chain drives

Answer 3

Roller Chain
Rollerless Chain
Silent Chain
Leaf Chain

Question 4

Describe (4) types of Roller Chain Drives

Answer 4

Single-Strand Chain
Multiple- Strand Chain
Double-Pitch
Offset Chain

Question 5

Describe the operation of a single-strand roller chain drive

Answer 5

Single-strand chains are used for most common general purpose applications for low to medium power transmissions

Question 6

Rollerless chains are similar in construction to a Roller chain except they have no _______

Answer 6

Rollers

Question 7

______ Chain create less noise than standard chains because of their inverted tooth design

Answer 7

Silent

Question 8

Chains that are made up of a series of plates held together by pins are called _______,with no rollers.

Answer 8

Leaf Chains

Question 9

_____ Strands chain similar to standard chains, but they have two or more chain widths.

Answer 9

Multiple Strands

Question 10

The interlock between chain and sprocket prevent the chain from ______ when a load is applied to the socket .

Answer 10

Slipping

Question 11

Describe how to measure Chain Sag

Answer 11

Chain sag is measured by ,rotating the sprockets so there is little to no chain sag in the slack side. Using Straight Edge and Rule. Measure halfway between sprockets

Question 12

Describe two methods used to adjust chain sag

Answer 12

Adjustable Centers

and Idlers

Question 13

The allowable mid-span movement of a horizontal oriented chain drive is (4) to ___ Percent

Answer 13

6%

Question 14

The allowable mid-span movement of vertical oriented chain drive is ____ to (3) Percent

Answer 14

2

Question 15

In Chain Drives Dividing the mid-span movement by (2) will give you the _______?

Answer 15

Chain Sag

Question 16

A chain should be replaced when its length becomes _____ percent longer than its original length

Answer 16

3

Question 17

Roller chain is made up of two types of links Roller links and _____ Links

Answer 17

Pin

Question 18

Another name for silent chain is ________ tooth chain.

Answer 18

Inverted

Question 19

A silent chain drive system usually produces ____% less noise than a standard roller chain drive.

Answer 19

35

Question 20

Multiple-strand chain has two or more _______ of chain connected together called strands.

Answer 20

Widths

Question 21

The silent chain, guides are aligned with the ________ in the sprocket.

Answer 21

Grooves

Question 22

The first two or three digits of the chain sizing code reveal the ________ of the chain.

Answer 22

Pitch