Page 1
DGC-K-18 … -80
Note
Unpressurized movement of the slide is permitted only for fault correction and at
low speed. If excessive speed is used, the resulting low pressure can pull the
sealing band into the pistonchamber. This leads to:
– high leakage and
– impermissible acceleration (e.g. when installed vertically).
Festo AG & Co. KG
Postfach
73726 Esslingen
Germany
+49 711 347-0
www.festo.com
Operating instructions 8025694
1306a
[8025692]
Original: de
Linear actuator DGC-K-18 … -80 English..................................
Note
Installation and commissioning are t o be carried out only by qualified specialists
( operating instructions).
1 Control sections and connections
1 2 3 4
2 5
3 Transport and storage
• Consider the weight of the DGC-K.
The DGC-K weighs up to 82 kg, depending on the design.
For transport, the conveyors must be spaced according to the permissible support spacings (support spacings Fig. 4 and Fig. 5).
4 Requirements for product use
Note
Improper handling can result in malfunctions.
• Make sure that the specifications contained in this chapter are adhered to at
all times.
This is the only way to ensure correct and safe product behaviour.
• Take into consideration the legal regulations applicable for the destination as
well as:
– regulations and standards
– regulations of the testing organizations and insurers
– national specifications.
• Remove all transport packaging such as plastic sheet s, caps and cartons (except for any covers in the pneumatic ports).
The material used in the packaging has been specifically chosen for its recyclability (exception: oil paper = residual waste).
• Use the product in its original status, without any unauthorised product modifications.
• Take into consideration the ambient conditions at the location of use.
Corrosive environments (e.g. ozone) will reduce the service life of the product.
• Compare the limit values specified in these operating instructions with your
actual application (e.g. pressures, forces, torques, temperatures, loads,
speeds).
Operation of the product in compliance with the relevant safety regulations is
contingent on adherence to the load limits.
• Take the tolerance of the tightening torques into ac c ount.
Unless otherwise specified, the tolerance is ±20 %.
For vertical installation:
• Make sure that the slide has reached a stable position when it comes to a stop
(e.g. the lowest point or secured with external stops).
89 7
1 Connection cap
2 Regulating screw for internal
end-position cushioning
3 Slide
4 Mounting thread for useful load
6 Slot for proximitysensor
7 Mounting slots in the profile
8 Pneumatic connections
9 Thread for direct mounting on the
cover
5 End cap
1) Accessories
2) In the DGC-K-18 ...-63, the threads are in the cover screws.
The DGC-K-80 has separate threads.
Fig. 1
2 Function and application
When the pneumatic ports 7 are pressurized alternatingly, the piston moves backwards and forwards in
the profile barrel. By means of a rigid connection, the
slide 3 also moves. The slot in the profile barrel re-
quired for this is covered by a band system.
The DGC-K is intended for the space-saving transport
of loads.
It is approved for the slide operating mode.
6
2)
Fig. 2 Circuit symbol
Fig. 3 Slide mode
• Make sure the compressed air is properly prepared ( Technical data).
• Maintain the selected medium for the total service life of the product. Example:
Always use non-lubricated compressed air.
1)
• Slowly pressurise the system as a whole.
There will then be no uncontrolled movements.
For slow start-up pressurisation, use start-up valve type HEL.
5 Installation
5.1 Installation, mechanical
• Avoid the sealing band being pressed and/or sucked in.
Damage to the sealing band reduces its reliability in operation. Jerky movement
of the unpressurized slide can cause a partial vacuum that sucks the sealing
band into the piston chamber.
• Avoid the band system becoming damaged or excessively dirty.
Damage to the DGC-K will reduce its reliability and service life.
• Make sure that the device is installed free of distortion and deflection.
•Use:
– the mounting thread 9 for direct mounting to the connection and end
cap 1 and 5
– The mounting slots with large stroke lengths for attachment via the profile,
taking into account the recommended support spacings ( Fig. 4 and Fig. 5).
• Select the corresponding mounting accessories from our catalogue
( www.festo.com/catalogue).
Note
• Make sure that the travel range of the drive is not restricted by the attachments to the profile (in particular with lateral attachment).
• To do this, push the movable load one time over the complete positioning
path.
Page 2
DGC-K-18
DGC-K-25
DGC-K-32
DGC-K-40
DGC-K-50
DGC-K-63
DGC-K-80
Fig. 4 Required support spa cing (l) with horizontal mounting orientation
• Observe the tightening torques for the threads 4 in the slide.
Size
Thread M5 M6 M8 M12
Tightening torques [Nm] 3.5 6 12 30
Fig. 8
Effective loads with own guide:
• Adjust the guides of the effective load and of the DGC-K so that they are exactly
parallel.
In this way can you avoid overloading on the slide (Permissible forces
11 Technical data).
The driver DARD-L1 offers a torque-free and almost backlash-free power transmission ( www.festo.com/catalogue).
5.2 Installation, pneumatic
For installation in a vertical or inclined position:
War n ing
If there is a pressure drop, the movable load will drop down:
Danger of crushing!
• Check whether HGL non-return valves are necessary.
In this way, you can prevent the movable load from sliding down suddenly.
• Check whether safety measures are requiredto prevent sinking as a result of
leakage (e.g. toothed latches or moveable bolts).
18 25 32 40 50 63 80
DGC-K-18
DGC-K-25
DGC-K-32
DGC-K-40
DGC-K-50
DGC-K-63
DGC-K-80
Fig. 5 Required suppor t spacing (l) with horizontal mounting orientation
2
1
A(2)
A(1)
W(2)
W(1)
W = compressed air supply ports from
the plant
1 = end position on the connection
side
1 = movement to the connection side
Fig. 9
• Select the suitable compressed air supply ports.
In addition to the supply ports provided at the factory (W), there are also the
alternative ports (A). These are fitted with plug screws.
For the linear actuator DGC-K of variant D2, the compresse d a ir supply can be
made on both sides.
A(2)
A(1)
12
A = alternative connections
2 = end position connection side
2 = movement to the connection side
A(1)
2
W(1)
• Note the tightening torques when attaching.
Tightening torques of the mounting screws
Direct mounting on thread 9
Size 18 25 32 40 50 63 80
[Nm] 2.5 3 4 5 8 14 45
Slot attachments (e.g. with MUP central support)
Size 18 25 32 40 50 63 80
[Nm] 3 3 4.5 5.5 18 18 18
Fig. 6
Note
With hard and stiff useful loads:
If the slide 3 is bent due to a buckled useful load, it will reduce the service life of the
drive.
• Make sure the mounting surface of the
usefulloadiseven.
Fig. 7
1
A(1)
A(2)
W(2)
W = compressed air supply ports from
the plant
1 = end position on the connection
side (left)
1 = movement to the connection
side (left)
Fig. 10
For setting the speed:
• Rotate the one-way flow control valves GRLA into the supply ports.
A(2)
1
2
A = alternative connections
2 = end position connection
side (right)
2 = movement to the connection
side (right)
Page 3
5.3 Installation, electric
Position scanning with proximity sensors SME/SMT:
• Use grooves (S) for mounting the proximity sensors ( Fig. 12).
• Observe the minimum distances between ferritic loads and the proximity
sensors.
In this way you will avoid incorrect switching as a result of external influences.
Minimum clearances [mm]
POS 18 25 32 40 50 63 80
L1 1 0 0 0 0 0 0 0
2 0 0 0 0 0 0 0
3 0 0 – – – – –
4 – – 10 30 10 20 10
5 – – 10 30 10 20 10
L2 1 10 0 0 0 0 0 0
2 10 0 0 0 0 0 0
3 30 10 – – – – –
4 – – 0 0 0 0 0
5 – – 0 0 0 0 0
L3 1 30 10 10 30 10 20 10
2 0 0 0 0 0 0 0
3 10 0 – – – – –
4 – – 0 0 0 0 0
5 – – 0 0 0 0 0
L4 1 0 0 0 0 0 0 0
2 30 10 10 30 10 20 10
3 10 0 – – – – –
4 – – 0 0 0 0 0
5 – – 0 0 0 0 0
DGC-K-18/-25
DGC-K-32 ... -80
4 5
Fig. 11 (POS = positionof proximity switch)
Laying the cables for the proximity switches:
• Observe that the cables for the proximity switches can be guided through the
groove.
21
3
21
6 Commissioning
6.1 Commissioning the complete system
• Slowly pressurise the system as a whole.
In this way you will prevent sudden uncontrolled movements.
For slow start-up pressurisation, use start-up valve type HEL.
6.2 Preparing for commissioning
Before each commissioning and in operation:
War n ing
Fast moving parts can cause injury to people in the
environment of the DG C-K.
• Makesurethat,inthetravelrange
– Nobody can reach into the path of the movable
components (e.g. by providing a protective
guard)
Fig. 13
– There are no foreignobjects in the path of the
moving components.
It should not be possible to touch the DGC-K until
the load has c ome to complete rest.
War n ing
Without external cushioning devices the DGC-K may be damaged if the maximum
values specified in the catalogue are exceeded.
• Make sure that the limit values are not exceeded even in the event of malfunctions.
At medium or large useful loads or high speeds:
• Use the configuration tool “DGC-QuickCalc” for pneumatic drives in the support
portal ( www.festo.com/sp).
• Make sure that cushioning devices are of sufficient size.
Without external cushioning devices the DGC-K will withstand maximum speeds
and useful loads as per catalogue specifications or table ( Fig. 18).
5.4 Installation of accessories
• Use the following grooves for attachment of the accessories ( Fig. 12).
S = Slot for proximity sensor
N = Slot for mounting accessories
DGC-K-18/-25 DGC-K-32 ... -80
S
S
N
S
N
NN
S/N S/N
S/N
N
S
N
Fig. 12
•Usetheslotcovers( www.festo.com/catalogue):
– to prevent contamination in the slots (S)
– for locking the cables of proximity switches.
6.3 Carryingout commissioning
War n ing
Risk of collision!
• Note that, for the load geometries with projection,
the regulating screws 2 of the DGC-K may only be
turned when the slide is at rest.
Fig. 14
1. Close the one-way flow control valves
– for both sides at first c ompletely
– then one rotation open again.
Fig. 15
Using the internal end position cushioning PPV:
2. Close the adjusting screws for the internal end position cushioning PPV 2
– on both sides at first completely
– then one rotation open again.
Fig. 16
Note
To set the end position cushioning:
• Make sure that the slide reaches the end positions without striking hard
against them or bouncing back.
3. Pressurize the DGC-K slowly as follows:
– at first on both sides simultaneously. The slide will then move slightly to a
centre of equilibrium.
– Then exhaust the DG C-K on one side.
In this way you can avoid peak loadings on the DGC-K and in the compressed
air network.
4. Start a test run.
5. Check whether the speed must be modified ( 5.2 Installation, pneumatic).
Page 4
7 Maintenance and care
• Clean the belt system if required with a soft cloth.
• Avoid cleaning agents which will damage the belt system, which is made of PU.
Excessive rubbing or the use of grease-solvent cleaning agents (e.g. soap suds)
will damage the grease layer.
8Repair
• Recommendation: Send the product to our repair service.
This willensure that special attention is given to the necessaryfine tuning and
testing.
• Information about spare parts and accessories:
( www.festo.com/spareparts).
9 Accessories
Note
• Please select the corresponding accessories from our catalogue:
( www.festo.com/catalogue/DGC-K).
Permissible force and torque loading
Size 18 25 32 40 50 63 80
GK Fz
GV Fz
Formulas for combined loads:
0, 4 ×
[N] 120 330 480 800 1200 1600 2500
max
Mx
[Nm] 0.8 1.2 1.9 3.8 6 5.7 32
max
My
[Nm] 11 20 40 60 120 150 400
max
Mz
[Nm] 1 3 5 8 15 24 100
max
[N] 120 330 480 800 1200 1600 –
max
Mx
[Nm] 1.6 2.4 3.8 7.6 12 11.4 –
max
My
[Nm] 22 40 80 120 24 0 300 –
max
Mz
[Nm] 2 6 10 16 30 48 –
max
Fz
Mx
+
Fz
Mx
max
Fz
≤ 1
Fz
max
max
My
+
My
max
+ 0, 2 ×
Mz
Mz
Mz
Mz
max
max
≤ 1
≤ 1
10 Trouble-shooting
Malfunction
Uneven movement of
the slide
Malfunctions in
position sensing
Heavy leakage Linear actuator integrated in a
Linear actuator does
not achiev e the
desired speed
Possible cause Remedy
One-way flow control valve not
installed correctly
Ferritic parts in the v icinity of the
proximity sensor
distor ted manner
Seal wo rn Replace worn parts:
Sealing band pressed/sucked in When the linear actuator is
Air volume not sufficient – Increase connection
High friction or counteracting
force
If possible reduce the exhaust
(not the supply air)
Use par ts consisting of
non-magnetic materials or
observe minimum distances
( 5.3. Installation, electric)
Fasten the linear actuator to a flat
base.
– yourselfwith wearing parts kit
– send product to Festo for
repairs
unpressurized:
loosen the tubing connectio n and
movetheslidebyhandthrough
theentirestroketwice(if
necessary, move fixed stops into
the end position)
Avoid low pressure in the piston
chamber (e.g. only move the
unpressurised slide slowly)
cross-section
– Connect v o lumes in series
Observe limits
Fig. 17
11 Technical data
Size
Pneumatic connection M5 GÁ G¼ GÅ G½
Mode of operation Double-acting
Mounting position Any
Operating medium Compre ssed air to ISO 8573-1:2010 [7:–:–]
Notes regarding operating/
control medium
Operating pressure [bar] 2…8 1.5 … 8
Ambient temperature [°C] –10 … +60
Theoretical force at 6 bar [N] 153 295 483 754 1178 1870 3016
Speeds (min … max) [m/s] 0.05 … 2 0.04 … 2 0.03 … 2
Cushioning length, PPV [mm] 16 18 20 30 30 30 83
Cushioning PPV Pneumatic cushioning, adjustable at both ends
Max. impact energy Diagrams in the catalogue
Materials
Profile tube, slide Anodised aluminium
End cap Aluminium
Piston Aluminium, POM Aluminium
Piston seal, cushioning seal,
sealing band
Wiper seal, band reverser POM
Cover strip Steel PU
Vapour disc Nitrile rubber
18 25 32 40 50 63 80
Lubricated operation possible (required during subsequent
operation)
PU
Fig. 18
Fig. 19
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