Lecture 10

Question 1

What is the bore?

Answer 1

The diameter of the internal chamber - inches/mm

Question 2

What is the rod?

Answer 2

The diamter of the piston rod - inches/mm

Question 3

What is the stroke?

Answer 3

The distance that the piston will travel - inches/mm

Question 4

What is the pressure?

Answer 4

The maximum hydraulic pressure allowed - psi/bar/MPa

Question 5

What happens when cylinders are in parallel?

Answer 5

They perform a delayed action since the least loaded cylinder has to operate first before the heavier load cylinder

Question 6

What happens when cylinders are in series?

Answer 6

The unloaded cylinder is first in line to the pump, can perform pressure amplification

Question 7

How do compressors work?

Answer 7

Takes in atmospheric air which, as the weather changes, contains a variable amount of moisture

When the air is compressed the temperature and pressure of the air changed and the moisture condenses out of the air and pools into water inside the air tank i.e. the air in a compressor is not dry

This water is potentially corrosive to many pneumatic components and has to be removed or regularly drained

Question 8

What are the two components of pneumatics?

Answer 8

Dry air

Oil lubricated