Chain Drives

Question 1

What is a chain drive used for?

Answer 1

Transmit the force and Motion of a drive unit to a driven machine

Question 2

Roller chain assembly can contain several types of links including -

Answer 2

Roller links
Pin links
Connecting links
Offset links

Question 3

A roller link consists of -

Answer 3

Two bushing which are press-fit into two roller link plates
Two rollers which revolve freely on the bushing

Question 4

Pin links consist of -

Answer 4

Two link plates which hold the pins
Roller links which pivot on the pins

Question 5

Connecting links is used to -

Answer 5

Join a roller chain assembly, making it endless

Question 6

A connecting link consist of -

Answer 6

Two pins press-fitted and riveted permanently to a link plate
A link plate which May have either a slip-fit or a press fit on the pins
A securing method (Spring clip, cotter pin, spring pins or rivets)

Question 7

What is pitch?

Answer 7

The distance, in inches or millimetres between the centres of adjacent joint members

Question 8

ANSI code has two Numbers , what do the digits on the right stand for? Either 0,1,5

Answer 8

O = usual or regular proportion
1= lightweight
5 = rollerless bushing chain

Question 9

What are multiple-strand roller chains used for?

Answer 9

Transfer maximum power with the smallest pitch size

Question 10

What are silent chains design for?

Answer 10

High-speed drives

Question 11

Type a sprockets are designed -

Answer 11

Without hubs

Question 12

Type B sprockets are design with -

Answer 12

A hub on one side only

Question 13

Type C sprockets were design -

Answer 13

Hub projections on both sides

Question 14

Type D sprockets are considered -

Answer 14

Detachable

Question 15

What is a good amount of chain slack for up/down direction

Answer 15

4% to 6%

Question 16

For one direction, slack shouldn’t be anymore than

Answer 16

2%

Question 17

What are idler sprockets?

Answer 17

Used to take up chain slack where it is not possible to adjust centres

Question 18

Recommend changing the chain should be replaced when extension be

Answer 18

1% to 2% depending on the speed and operation conditions

Question 19

Old chain\ New chain x 100, this is the blank??? Formula

Answer 19

Stretch

Question 20

What way should a chain connecting pin be facing

Answer 20

Closed end towards direction of travel

Question 21

Chain 35

Answer 21

3/8, rollerless

Question 22

How would you set chain slack (tension) on vertical chain drive?

Answer 22

Run the chain at 1/4 chain pitch deflection

Question 23

How often should you inspect roller chains newly placed into service?

Answer 23

First 100 Hours, then every 500 there after