Chapter 7 (Check valve, Cylinders and motors

Question 1

Component which allows flow in only one direction

Answer 1

Check valve

Question 2

The most common pneumatic actuator is a ______.

Answer 2

Cylinder

Question 3

Converts fluid power energy into straight line mechanical energy

Answer 3

Cylinder

Question 4

3 parts a pneumatic cylinder are made up of:

Answer 4

1) Cylinder body
2) Moveable piston
3) Piston rod

Question 5

For proper operation of a cylinder, a _____ ____ and ____ ____ must be present

Answer 5

Positive seal
Rod gland

Question 6

Keeps pressure inside cylinder

Answer 6

Primary seal

Question 7

Keeps dirt off rod and provides a small amount of lubrication

Answer 7

Wiper seal

Question 8

4 ways a cylinder can be mounted:

Answer 8

1) Clevis
2) Trunnion Mount
3) Flange mount
4) Side lug

Question 9

A load being pushed by a cylinder

Answer 9

Thrust

Question 10

A load being pulled by a cylinder

Answer 10

Tension

Question 11

6 common types of cylinders:

Answer 11

1) Single acting
2) Double acting (most common)
3) Single rod
4) Double rod
5) Spring returned
6) Ram (Porta power)

Question 12

Collapse of a rod at or above capacity

Answer 12

Buckling

Question 13

Slows down a cylinders piston movement just before reaching the end of its stroke

Answer 13

Cushion

Question 14

What’s the purpose of a cushion?

Answer 14

Slows down a pistons movement just before reaching the end of the stroke

Question 15

Pneumatic motor that converts the potential energy of compressed air into rotary mechanical energy

Answer 15

Rotary motor

Question 16

Two basic Hydrostatic motors:

Answer 16

1) Piston
2) Vane

Question 17

How does a check valve work?

Answer 17

When system pressure overcomes the spring force on a poppet, the poppet is moved off its seat and allows air to pass

Question 18

The piston inside the cylinder would be considered the?

Answer 18

Blind end

Question 19

The rod outside the cylinder would be considered the?

Answer 19

Rod end

Question 20

A cylinder with ports on each end and a rod on both ends

Answer 20

Double acting double rod

Question 21

2 reasons why a cylinder would fail while retracting?

Answer 21

1) Piston breaks off rod
2) Rod threads shear off

Question 22

What happens if a piston seal fails?

Answer 22

Lose force

Question 23

_____ and _____ is always applied to the smallest volume of area in a motor to make it rotate.

Answer 23

Flow and pressure

Question 24

Common check valves operate at ____ psi.

Answer 24

5