Page 68 - PNEUMATIC SYSTEM INSTRUMENT

DOUBLE ACTING CYLINDER

Figure 8.4: Double acting cylinder

This actuator thrust is developed in both extending and retracting

directions as air pressure is applied alternately to opposite sides of a

piston. The thrust that is available on the retracting stroke is reduced

due to the smaller effective piston area but is only a consideration if

the cylinder is to pull the same load in both directions.

One rod Two rods

Figure 8.5: Standard symbol of double acting cylinder

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