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Festo 7CRHDb_en
4.4
Repairing the cylinder CRHD-…-S6
The description in this chapter can be used to repair cylinders of the type CRHD-…-S6 with the following features:
Code Description
Code Description
PPV
Adjustable pneumatic cushioning
MQ
Bearing cap with male thread
A
External position sensing
MC
End cap with clevis
ms
End cap with lug
4.4.1
Structure of the bearing cap
1
2
3
5
4
6
1
Bearing cap
2
O-ring
3
Cushioning seal
4
Piston rod seal
5
Retaining ring
6
Bearing
4.4.2
Removing the bearing and end caps
Warning
Use clamping protection to prevent damage to the surface of the cylinder
barrel and deformation of the cylinder barrel.
•
Clamp the cylinder barrel in a vice.
•
Push the piston rod fully into the cylinder.
Warning
Risk of burns from hot surfaces.
Wear suitable protective gloves.
The area near the cushioning screw
2
must not be heated.
•
Heat the thread section
3
between the bearing cap
1
and cylinder barrel
4
to between 160 °C and 170 °C.
1
3
2
4
