55-CU##-TF222-129EN
Page 2 of 2
7 Maintenance (continued)
7.3 Seal Replacement Part Numbers
Warning
Only use SMC seal kits as listed in the table below;
Description
Applicable
Bore [mm]
Part Number
55-CDU25-*-DCW3726W
Ø 25
CU25D-PS
7.4 Lubrication Procedure
•
Apply lubricant to:
• The rod seal and the rod seal groove on the cover.
• The piston outer surface and piston seal groove.
• The piston seal and gaskets.
• The piston rod surface and cylinder tube internal surface.
•
Lubricate the parts with the grease packs provided with the seal kit.
For additional grease use the grease pack listed below.
Product
Grease Pack Number
Weight [g]
Standard
GR-S-010
10
GR-S-020
20
The amount of lubricant to be applied is listed in the following table.
Bore [mm]
Required amount of
grease up to minimum
stroke [g]
For each additional
5mm Stroke [g]
Ø 25
Initial 5mm
0.12
0.015
7.5 Reassembly Procedure
Apply grease to the end of the piston rod, especially on the 30° chamfer
and on the flats. Insert with care the piston rod assembly into the
cylinder tube to prevent any damage to the rod seal, piston seal or tube
gasket.
Insert slowly the head cover collar assembly and then reassemble the
retaining ring to the rear side. Use appropriate pliers (tool for C-shape
snap ring) for installation.
Caution
When installing the snap ring, be aware that the snap ring may come off
the pliers and could result in operator injury or equipment damage. Also
make sure ring is firmly seated in ring groove.
•
Checking assembly.
Make sure that no air is leaking from packing seals and that the cylinder
operates smoothly at minimum operating pressure. Check for cylinder
smooth movement and for air leakage.
8 Limitations of Use
8.1 Limited warranty and disclaimer/compliance requirements
Refer to Handling Precautions for SMC Products.
8.2 Obligations of the end-user
•
Ensure the product is used within the specification outlined.
•
Ensure that the maintenance periods are suitable for the application.
•
Ensure any cleaning processes to remove dust layers are made with
the atmosphere in mind (e.g. using a damp cloth to avoid static build
up).
•
Ensure that the application does not introduce additional hazards by
mounting, loading, impacts or other methods.
•
Ensure that there is sufficient ventilation and air circulation around the
product.
•
If the product is subject to direct heat sources in the application, they
should be shielded so that the actuator temperature stays within the
stated operating range.
Danger
•
Do not exceed any of the specifications listed in Section 2 of this
document as this will be deemed improper use.
•
Air equipment has an air leakage during operation within certain limits.
Do not use this equipment when the air itself introduces additional
hazards and could lead to an explosion.
•
Use only EX certified auto switches. These should be ordered
separately.
8 Limitations of Use (continued)
•
Do not use this product in the presence of strong magnetic fields that
could generate a surface temperature higher than the product
specification.
•
Avoid applications where the piston rod end and the adjoining part in
the application can create a possible ignition source.
•
Do not install or use these actuators where there is the possibility for
the piston rod to impact foreign objects.
•
In the event of damage or failure of any parts located in the vicinity
where this product has been installed, it is the responsibility of the user
to determine whether or not this has compromised the safety and
condition of this product and/or the application.
•
External impact on the cylinder body could result in a spark and/or
cylinder damage. Avoid any application where foreign objects can hit
or impact the cylinder. In such situations the application should install
a suitable guard to prevent this occurrence.
•
Do not use this equipment where vibration could lead to failure.
9 Product Disposal
This product shall not be disposed of as municipal waste. Check your
local regulations and guidelines to dispose this product correctly, in order
to reduce the impact on human health and the environment.
10 Contacts
Refer to www.smcworld.com or www.smc.eu for your local
distributor/importer.
URL :
https:// www.smcworld.com (Global) https:// www.smc.eu (Europe)
SMC Corporation, 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021, Japan
Specifications are subject to change without prior notice from the manufacturer.
© 2022
SMC Corporation All Rights Reserved.
Template DKP50047-F-085M
