Flashcards in Module 8 Deck (31):
a cylinder that can exert pneumatic force in either direction
a cylinder having a single piston that reciprocates, providing thrust in both directions
Double-rod (or double-end rod) cylinder
a cylinder with a power stroke in only one direction
a cylinder containing two pistons capable of independent motion
the air capacity of a control valve in relation to a cylinder
Capacity coefficient (Cv)
Pneumatic cylinders convert the pressure of compressed air into _____ motion thrust.
Lubrication of an air cylinder is required to improve the _____.
Pneumatic cylinders resemble hydraulic cylinders but do not require _____ air lines.
A double-acting pneumatic cylinder can exert force in _____ direction(s).
A cylinder having a power stroke in one direction only is called a(n) _____ cylinder.
The retracting speed of a cylinder is usually controlled by a(n) _____ metering valve.
Exhaust Flow Control
The heads or caps of most industrial pneumatic cylinders are held in place by _____.
Almost all formed piston rings or seals are made of _____ materials.
Noncenterline cylinder mountings create a(n) _____ loading condition in the supporting structure.
The movement of a pivoting cylinder must be controlled to prevent the piston rod from being _____.
Before installing a new cylinder in an existing pneumatic system, make sure the cylinder will withstand the air system _____.
When selecting a cylinder, make sure it is large enough to move the _____.
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.
When checking the pneumatic system flow capacity for a new cylinder, always check the ratings of the control valves and the _____ valves.
When installing an air cylinder, make sure that the port size of the cylinder is the same as the port size of the _____.
A cushioning device is used in most air systems to prevent _____.
The service life of pneumatic cylinder is improved with _____.
A pneumatic cylinder with lugs, feet, or side-tapped holes for mounting is classified as being _____ mounted.
The major difference between pneumatic and hydraulic cylinders is the _____.
Absence of return lines
The amount of motion in a pivoting cylinder should be restricted to prevent the _____.
Piston rod from bending
A cylinder that produces work only on its extending stroke is called a _____ cylinder.
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.
Piston retraction speed is commonly controlled by _____.
Restricted exhaust air.
When selecting a cylinder, always make sure that the cylinder ports are the same size as the _____.
Control valve ports.
Piston rings (or cups) and seals of pneumatic cylinders are usually made of _____.