Festo SLG-8 Series User manual

(en) Operating
instructions
Linear drive
SLG-...
8074727
2017-10e
[8074729]
US Patent No. 6,186,049; 6,196,110; 6,338,294

SLG-...
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Original instructions
Symbols: Installation and commissioning may only be per
formed in accordance with these instructions by
technicians with appropriate qualifications.
Warning
Caution
Note
Environment
Accessories
English 3.........................................................................

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Linear drive SLG-...English
Documentation on the product
For all available product documentation èwww.festo.com/pk
1 Operating parts and connections
1
2
3
4
5
67 8
9
aJ
1Groove for fastening the proximity switch
2Threaded holes for the compressed air connection (alternative connections are
sealed with threaded pins)
3Accurate adjustment of the stop
4Locking screws for rough adjustment of the stop
5Through holes for fastening the drive directly
6End position cushioning (either ...-P or with YSRG-...)
7Lubricating nipple
8Centring holes
9Threaded holes for fastening the work load
aJ Mounting aids geometry (not intended for further use)
Fig. 1

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2 Function and application
By applying compressed air to the connec
tions alternately, the inner slide moves back
wards and forwards in the cylinder barrel.
By means of a fixed connection, the outer
slide also moves. A band system seals the
required slot in the cylinder barrel.
The component is designed for space-saving
mass transport only in slide mode.
The pressureless movement of the slide is
only permitted for rectifying faults and at low
speed.
If the speed is too high, the resulting low
pressure can pull the sealing band into the
piston chamber. This can lead to:
– excessive leakage and
– non-permitted accelerations (e.g. if fitted in a vertical position).
3 Conditions of use
Please note
Incorrect handling can lead to malfunctioning.
SMake sure that the points mentioned in this chapter are always observed.
The product will then function correctly and reliably.
SCompare the limits in these operating instructions with your current applica
tion (e.g. pressures, forces, torques, masses, temperatures, speeds).
Only when the load limits are observed can the component function in accord
ance with the relevant safety guidelines.
SConsider the ambient conditions at the location.
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Fig. 2
Fig. 3: Slide mode
Fig. 4: Yoke mode

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SPlease observe the regulations applicable to your location (e.g. local or
national authorities).
SRemove all packaging.
The packing material can be recycled (except for oiled paper = waste).
SEnsure that there is a supply of compressed air which is:
– correctly prepared,
– dried,
– non-lubricated.
Only if non-lubricated air is maintained, will lubrication be guaranteed for the
complete service life of the product.
SSlowly pressurize the complete system.
Movements of the actuators will then be under control, even in unintentional
situations.
SUse the product in its original condition without undertaking any modifica
tions.
4 Transport and storage
SAlways store the component in a lying or
vertical standing position.
Otherwise the component will become
distorted especially with long strokes.
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Fig. 5

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5 Fitting
Mechanical fitting
SPrevent the sealing band from being
pressed or sucked in.
Damage to the sealing band reduces the
operating reliability.
A sudden jerk movement of the pressure
less slide can create a low pressure which sucks the sealing band into the
piston chamber.
SPlace the component in position with re
gard to the following points:
– You must be able to gain access to the
operating parts and connections later
when the component is installed.
– The fitting position takes into account
the minimum distances required for
reliable operation of the proximity
switches used.
L1L2= L3L4L5
(SME-10-...) (SMT-10-...)
L1L5
SLG-8-... as desired 10 mm 17 mm 4 mm
SLG-12-... 12 mm as desired
SLG-18-... 46 mm 26 mm
Fig. 8
If the minimum distances are not observed, an individual functional check may
be necessary.
Fig. 6
Fig. 7

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SFasten the component as in Fig. 9.
Component supported
Points
Minimum distance: every 100 mm
Surface
Minimum evenness
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Fig. 9
If the minimum distances are not observed,
an individual functional check may be necess
ary.
SPlace the work load on the slide as fol
lows:
– The tilting torque of force F parallel to
the cylinder axis and distance a should
remain as small as possible.
– Mass moments of interia occurring in a
dynamic application should be calcu
lated, especially with changing loads.
SSelect the screw for fastening the work
load with maximum screwing depth as in
Fig. 11 / Fig. 12.
j8 12 18
L64 mm 5 mm 8 mm
j1M4 M4 M5
Fig. 12
Fig. 10
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ÎÎ
ÎÎ
Fig. 11

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Pneumatic fitting
To set the slide speed:
SUse one-way flow control valves of type GRLA-...
These valves control the exhaust directly
in the compressed air connections.
For screwing in directly without one-way flow
control valves:
SUse barbed fittings or screw connections
with small width across flats.
Fittings with large width across flats re
quire too much space for rubing.
SCheck whether non-return valves with
triggering type HGL-... are required.
If there is a loss of pressure in cases
where the cylinder is fitted in a vertical
position, non-return valves ensure that
the mass remains in the position reached.
SSelect the compressed air connections for
your application:
There are alternative compressed air con
nections (B) to the connections intended
for use (A) when supplied from the fac
tory.
These are sealed with threaded pins.
On the alternative connections, the
threaded pins will only seal when new
sealing medium is applied.
SConnect the SLG-... to the compressed air
connections 2.
The assignment of the connecting holes to
the direction of travel of the slide is shown
in Fig. 16.
Fig. 13
Fig. 14
Fig. 15
(A)
(B)
Fig. 16

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Electrical fitting
When using proximity switches:
Please note
SMake sure that the minimum distances from other proximity switches corre
spond to the values specified in the diagram.
In this way you will avoid incorrect switching. If the minimum distances are
not observed, an individual functional check may be necessary.
SME-10-... SMT-10-...
L713 mm 9 mm
Fig. 18
With components of sizes 8 and 12:
SPlease note that the switching solenoid is
arranged asymmetrically.
In this way the proximity switches are
distributed asymmetrically on the compo
nent.
Fig. 17
7
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Fig. 19

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6 Commissioning
Complete system
SSlowly pressurize the complete system.
Movements of the actuators will then be
under control, even in unintentional situ
ations.
Use the start-up valve type HEL-... for this
purpose.
Individual unit
Please note
As a result of possible faults in the struc
ture or in the controller, the component will
not react as expected under certain circum
stances.
SMake sure that:
– nobody can reach into the positioning
range of the moving mass (e.g. by
means of a protective screen)
– foreign objects do not enter the
positioning range of the moving
mass.
Warning
Uncushioned movements in the end posi
tions impede the functional reliability of
the component.
SMake sure that the fixed stops do not
project above the housing contour of the
component.
Otherwise the stops will not have suffi
cient cushioning effect. The inner slide
will strike against the cover.
Fig. 20
Fig. 21
Fig. 22
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