Module 8 Flashcards Preview

MT 108 Chapter 4 > Module 8 > Flashcards

Flashcards in Module 8 Deck (31):
1

a cylinder that can exert pneumatic force in either direction

Double-acting cylinder

2

a cylinder having a single piston that reciprocates, providing thrust in both directions

Double-rod (or double-end rod) cylinder

3

a cylinder with a power stroke in only one direction

Single-acting cylinder

4

a cylinder containing two pistons capable of independent motion

Two-piston cylinder

5

the air capacity of a control valve in relation to a cylinder

Capacity coefficient (Cv)

6

Pneumatic cylinders convert the pressure of compressed air into _____ motion thrust.

Straight-Line

7

Lubrication of an air cylinder is required to improve the _____.

Service Life

8

Pneumatic cylinders resemble hydraulic cylinders but do not require _____ air lines.

Return

9

A double-acting pneumatic cylinder can exert force in _____ direction(s).

Two

10

A cylinder having a power stroke in one direction only is called a(n) _____ cylinder.

Single-Acting

11

The retracting speed of a cylinder is usually controlled by a(n) _____ metering valve.

Exhaust Flow Control

12

The heads or caps of most industrial pneumatic cylinders are held in place by _____.

Tie Rods

13

Almost all formed piston rings or seals are made of _____ materials.

Synthetic

14

Noncenterline cylinder mountings create a(n) _____ loading condition in the supporting structure.

Off-Center

15

The movement of a pivoting cylinder must be controlled to prevent the piston rod from being _____.

Bent

16

Before installing a new cylinder in an existing pneumatic system, make sure the cylinder will withstand the air system _____.

Pressure

17

When selecting a cylinder, make sure it is large enough to move the _____.

Load

18

When determining the cylinder diameter needed to deliver a given force at a given air pressure, you must take into account the _____ in the pneumatic system.

Pressure Losses

19

When checking the pneumatic system flow capacity for a new cylinder, always check the ratings of the control valves and the _____ valves.

Regulator

20

When installing an air cylinder, make sure that the port size of the cylinder is the same as the port size of the _____.

Control valve

21

A cushioning device is used in most air systems to prevent _____.

Shock

22

The service life of pneumatic cylinder is improved with _____.

Lubrication

23

A pneumatic cylinder with lugs, feet, or side-tapped holes for mounting is classified as being _____ mounted.

Fixed, noncenterline

24

The major difference between pneumatic and hydraulic cylinders is the _____.

Absence of return lines

25

The amount of motion in a pivoting cylinder should be restricted to prevent the _____.

Piston rod from bending

26

A cylinder that produces work only on its extending stroke is called a _____ cylinder.

Single-acting

27

When you divide the volume of air needed per cylinder stroke by the amount of time one stroke takes, you are calculating _____.

Required airflow rate.

28

Piston retraction speed is commonly controlled by _____.

Restricted exhaust air.

29

When selecting a cylinder, always make sure that the cylinder ports are the same size as the _____.

Control valve ports.

30

Piston rings (or cups) and seals of pneumatic cylinders are usually made of _____.

Synthetic materials.

31

Shock can be prevented in a pneumatic cylinder by using _____.

Cushioning devices.