Festo DGC G Series, Repair Instructions

Page: 29 / 136

29 / 48 Festo 07DGC-Ga_en
Insert the piston fully into the cylinder barrel. •
Adjust the excess sealing band and cover band by moving the piston back •
and forth and pulling or pushing the respective bands at the same time so
that the excess band is no greater than the width of the contact surface (X)
on the buffer (see table).
Type Width of the contact sur-
face X
DGC-18-…-G 6 mm
DGC-25-…-G 7 mm
DGC-32-…-G 9 mm
DGC-40-…-G 9 mm
Grease the buffer. •
Observe the greasing instructions in the table at the start of this chapter.
Insert the buffer into the cylinder barrel.
•
Grease the sealing ring and insert it into the buffer. •
Note
The sealing band and cover band must not protrude beyond the buffers,
otherwise the end cap cannot form an air-tight seal and may have an adverse
effect on the function of the linear drive. The sealing band and cover band
have to be shortened so that they seal off flush with the outer edge of the
buffers. However, it is better if they are slightly short of the buffers.
Apply the band clamping mechanism to the sealing band and cover band. •
Apply Loctite 243 to the socket head screw and tighten it using the appro- •
priate torque (see table).
Type Torque
DGC-18-…-G 0.2 Nm ±10%
DGC-25-…-G 0.4 Nm ±10%
DGC-32-…-G 0.4 Nm ±10%
DGC-40-…-G 1.0 Nm ±10%
Move the piston to the other end of the cylinder barrel once in order to •
secure the sealing band back in the slot.
X