Festo DGC-K-18 … -80 - Manual (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.
8 Repair
• Recommendation: Send the product to our repair service.
This will ensure that special attention is given to the necessary fine 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).
10 Trouble-shooting
Malfunction Possible cause Remedy
Uneven movement of
the slide One-way flow control valve not
installed correctly If possible reduce the exhaust
(not the supply air)
Malfunctions in
position sensing Ferritic parts in the vicinity of the
proximity sensor Use parts consisting of
non-magnetic materials or
observe minimum distances
(
5.3. Installation, electric)
Heavy leakage Linear actuator integrated in a
distorted manner Fasten the linear actuator to a flat
base.
Seal worn Replace worn parts:
– yourself with wearing parts kit
– send product to Festo for
repairs
Sealing band pressed/sucked in When the linear actuator is
unpressurized:
loosen the tubing connection and
move the slide by hand through
the entire stroke twice (if
necessary, move fixed stops into
the end position)
Avoid low pressure in the piston
chamber (e.g. only move the
unpressurised slide slowly)
Linear actuator does
not achieve the
desired speed Air volume not sufficient – Increase connection
cross-section
– Connect volumes in series
High friction or counteracting
force Observe limits
Fig. 17
11 Technical data
Size 18 25 32 40 50 63 80
Pneumatic connection M5 G Á G ¼ G Å G½
Mode of operation Double-acting
Mounting position Any
Operating medium Compressed air to ISO 8573-1:2010 [7:–:–]
Notes regarding operating/
control medium Lubricated operation possible (required during subsequent
operation)
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 PU
Wiper seal, band reverser POM
Cover strip Steel PU
Vapour disc Nitrile rubber
Fig. 18
Permissible force and torque loading
Size 18 25 32 40 50 63 80
GK Fz max [N] 120 330 480 800 1200 1600 2500
Mx max [Nm] 0.8 1.2 1.9 3.8 6 5.7 32
My max [Nm] 11 20 40 60 120 150 400
Mz max [Nm] 1 3 5 8 15 24 100
GV Fz max [N] 120 330 480 800 1200 1600 –
Mx max [Nm] 1.6 2.4 3.8 7.6 12 11.4 –
My max [Nm] 22 40 80 120 240 300 –
Mz max [Nm] 2 6 10 16 30 48 –
0, 4 × Fz
Fz
max
+ Mx
Mx
max
+
My
My
max
+ 0, 2 × Mz
Mz
max
≤ 1
Formulas for combined loads:
Fz
Fz
max
≤ 1 Mz
Mz
max
≤ 1
Fig. 19