Festo DGC G Series, Repair Instructions

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18 / 48 Festo 07DGC-Ga_en
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Chapters 4.1.3 and 4.1.4 describe how to dismantle and repair the slide.
Pull the sealing band out of the cylinder barrel on one side. •
Note
It may not be possible to pull out the sealing band on long drives. In this
case, push it into the cylinder barrel with a blunt object and then remove it.
Assembling the linear drive 4.1.2
When assembling a linear drive wearing parts, such as the sealing band, seals, buffers, clips and the complete piston,
can be replaced.
The wearing parts are ordered on the online spare parts catalogue (spareparts.Festo.com) quoting the appropriate part
number (dependent on the size of the linear drive).
The part number is an x-stroke part number. In addition to the part number, you must also specify the stroke of your
linear drive when ordering. The stroke can be determined from the type code on the name plate of the linear drive (see
order example below). Using this information you can calculate the necessary sealing band length.
Cutting the new sealing band to length
The exact length of the sealing band is determined by the 0-stroke of the respective type and the stroke of the linear
drive. The stroke is specified by the type code on the name plate. Check the length of the new sealing band and shorten it
to length (0-hub + hub) as necessary. See order example.
Type Length L
0
DGC-8-…-G 140 mm
DGC-12-…-G 160 mm

Example: DGC-12-405-G
0-stroke:
160 mm
Stroke: 405 mm
Length of the sealing band = 0- stroke = 565 mm
The length of the sealing band calculated in this way is a theoretical value. Component tolerances may make it necessary
to adjust the length of the sealing band after installation.
Note
Sturdy general purpose scissors or metal shears are best for cutting the sealing band.
Warning
Do not bend the sealing band as this may cause damage or tearing and reduce its service life.