Belts

Question 1

What is an advantage of belt drives over chain

Answer 1

Damper vibration

Question 2

How much crown would we expect on a 6 inch flat belt pulley?

Answer 2

1/8 inch per foot, 1/16

Question 3

How are classic V belts length measured?

Answer 3

Inside

Question 4

What does the creep mean in the belt terminology

Answer 4

Speed reduced due to belt length vibration as its cycles from the slack to the tight side

Question 5

Which part of the belt carries a load from one pulley to the other

Answer 5

The tensile member

Question 6

Why use raw edge V belt?

Answer 6

Less slip

Question 7

When will double angle v-belt be used?

Answer 7

When sheaves are driven by the top and Bottom of the belt

Question 8

Belt slippage has been taking place under load?

Answer 8

Glazing and cracked

Question 9

How wide is A42 ?

Answer 9

A= 1/2

Question 10

3L200 , how wide?

Answer 10

2 inch

Question 11

650L4, what type of belt?

Answer 11

Ploy b

Question 12

What is belt tension?

Answer 12

Amount of stretch applied to a belt

Question 13

What is installed tension?

Answer 13

Tension on the belt when the drive is not running

Question 14

What is effective tension?

Answer 14

Is the tension heeded on the belt to transmit power without slippage

Question 15

Common belt materials?

Answer 15

Cotton, leather, rubber, nylon and synthetic materials

Question 16

How long should A new belt run before being retention

Answer 16

12-24 hours

Question 17

How is slip caused?

Answer 17

By the surface characteristics of the belt and pulleys

Question 18

How to control slip?

Answer 18

Using smaller pulley ratios , aligning the pulleys correctly, ensuring adequate take up

Question 19

What way is best to reconnect a broken belt if it needs to be fix ASAP?

Answer 19

Mechanical splices

Question 20

Best way to repair a torn belt?

Answer 20

Hot vulcanized

Question 21

A,B,C,D,E are all examples of?

Answer 21

Classic belts

Question 22

2L,3L,4L,5L are all examples of?

Answer 22

Fractional horse power belts

Question 23

3V,5V, 8V are all examples of?

Answer 23

Narrow series belts

Question 24

What is the normal life capacity for belts?

Answer 24

5,000 to 7,000 hours

Question 25

What is the normal life capacity for sheaves?

Answer 25

25,000 hrs

Question 26

What is the minimum belt wrap (arc of contact ) for belts

Answer 26

120 degrees

Question 27

What information can I get out of A50?

Answer 27

Classic belt A 1/2

Question 28

What information can I get out of B50?

Answer 28

Classic belt B: 5/8

Question 29

What information can I get out of C50?

Answer 29

Classic belt C = 7/8

Question 30

What information an I get outta D50?

Answer 30

Classic belt D= l 1/4

Question 31

What does grip depend on?

Answer 31

Area of contact Materials of belt and pulleys Tension in the belt

Question 32

What does arc of contact depend on?

Answer 32

Pulley diameter Centre-to-centre distance Take-up devices used

Question 33

What is the main advantage of v-belts?

Answer 33

Simple wedging action of the belt against the sides of the sheave groove