Festo GRLZ Series, GRLA Series Operating Instructions Manual
Pneumatic linear cylinders
(en) Operating
instructions
8104218
2018-12b
[8104220]
Translation of the original instructions
Pneumatic linear cylinder
Identification of hazards and instructions on how to prevent them:
Danger
Immediate dangers which can lead to death or serious injuries
Warning
Hazards that can cause death or serious injuries
Caution
Hazards that can cause minor injuries
Other symbols:
Note
Material damage or loss of function
Recommendations, tips, references to other documentation
Essential or useful accessories
Information on environmentally sound usage
Text designations:
Activities that may be carried out in any order
1. Activities that should be carried out in the order stated
– General lists
è Result of an action/References to more detailed information
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Festo 2018-12b
Pneumatic linear cylinder
For all available product documentation è www.festo.com/pk
1 Operating elements and connectionsEnglish
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1 Fastening possibilities depending on
design:
– through-holes in the housing /
bearing cover / end cover in the
integrated flange – internal thread
in the screws of the bearing cover or
end cover
– external thread on the bearing cover /
end cover
– transverse bore in the flattened pivot
of the bearing cover / end cover
2 Compressed air connections in the
bearing/end covers or directly in the
housing
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3 Thread for fastening the load:
– external thread on the piston rod
– internal thread in the piston rod
or
– internal thread in the font plate
4 Adjusting screws for end position
cushioning in the bearing/end covers
(only on cylinders with adjustable end
position cushioning)
5 Groove for proximity switch
Festo 2018-12b English
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Pneumatic linear cylinder
2 Function
When the zylinder chamber is pressurized, the piston moves forwards in the barrel.
The piston rod transmits the movement to the outside. The extended piston rod is
moved back by spring force on single-acting cylinders and by pressurization of the
other cylinder chamber on double-acting cylinders.
The end positions can be detected by means of proximity switches in the grooves.
On double-acting cylinders, the cross-sectional area of the piston rod causes
differences of force between forward stroke and the return stroke (exception: with
double-ended piston rod).
3 Conditions of use
Please note
Incorrect handling can result in malfunctions.
S Ensure that the specifications in this chapter are always observed. This is the
only way to ensure correct and safe operation of the product.
S Observe the maximum limits specified in
C
%
mbar
the catalogue (e.g. for pressures, forces,
torques, masses, speeds, temperatures).
S Make sure there is a supply of correctly-
prepared compressed air.
Fig. 1
S Please observe the prevailing ambient
conditions.
S Observe also the standards specified in
LF-...
LR-...
the relevant chapters, as well as national
and local laws and technical regulations.
S Remove all transport safety measures
such as protective wax, foils, caps,
cardboard boxes.
40 μm
Fig. 2
The individual materials can be stored in
containers for recycling purposes.
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Festo 2018-12b English
Pneumatic linear cylinder
S Use the same medium composition
throughout the service life of the product.
Example:
selected: non-lubricated compressed air
continue to use: non-lubricated com
pressed air.
S Slowly pressurize the complete system.
This will prevent uncontrolled movements
from occurring.
Fig. 3
4 Installation
Mechanical installation
S Check whether the type designation of the cylinder to be fitted is the same as
that of the desired cylinder.
S Handle the cylinder with care so that the
cylinder barrel and the piston rod are not
damaged.
This would reduce operational reliability
and the service life.
S Place the cylinder on the support so that
the adjusting screws for the end position
cushioning are always accessible.
S Make sure that:
– external guides, if used, are fitted
parallel,
– they are not distorted and
– the maximum permitted loadings as
per catalogue are not exceeded.
S Observe the maximum tightening torques specified in the catalogue for
screws, locking nuts or accessories.
Fig. 4
Fig. 5
Fig. 6
Festo 2018-12b English
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