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Festo 7CRHDb_en

Important information

1.1 

About these repair instructions

This document contains important 
information about the professional 
repair of the cylinder with piston rod 
of the type CRHD.
The cylinder with piston rod CRHD is 
fully repairable in the event of damage 
due to normal wear. The entire 
cylinder must be replaced in the event 
of damage to the cylinder barrel.
Before carrying out a repair, 
the relevant chapter in these 
instructions must be read in full and 
followed consistently.
For reasons of clarity, these repair 
instructions do not contain complete 
detailed information. The following 
documents should therefore also be 
available when repairing the cylinder 
with piston rod:

• 

Operating instructions for 
the respective cylinder with 
piston rod

Contains information about 
the control sections and 
connections of the cylinder with 
piston rod as well as the function, 
structure, application, installation, 
commissioning, maintenance and 
care, etc. Can be found on the 
Festo website (

www.Festo.com

).

• 

Spare parts documentation

Contains an overview of the spare 
and wearing parts as well as 
information on their installation. 
Can be found in the online spare 
parts catalogue on the Festo 
website (

spareparts.festo.com

).

• 

Assembly aids

Contain an overview of available 
assembly aids such as lubricating 
greases, locking agents, 
maintenance tools, etc. (aids for 
assembly and maintenance). 
Can be found in the online spare 
parts catalogue on the Festo 
website (

www.Festo.com

).

1.2 

Pictograms used in these repair instructions

Warning

This sign indicates a dangerous situation for persons and/or the product. Failure to observe this warning can result in 
injury to persons and/or damage to the device.

Note

This sign provides important tips and information that can make your work easier.

Environment

This sign provides information on the steps required for environmentally-friendly use of materials and equipment, 
as well as the guidelines and regulations that may need to be observed.

Accessories

This sign contains information on accessories and attachments relevant to the context.

Documents

This sign contains references to other chapters or documents containing additional information.

Содержание CRHD Series

Страница 1: ...Repair instructions en Cylinder with piston rod Round cylinder stainless steel CRHD 7CRHDb_en...

Страница 2: ...uction distribution or sale of this document or communication of its contents to others without express authorisation is prohibited Offenders will be liable for damages All rights reserved in the even...

Страница 3: ...iations into consideration if necessary These repair instructions have been prepared with care Festo AG Co KG does not however accept liability for any errors in these repair instructions or their con...

Страница 4: ...bearing cap 11 4 3 2 Removing the bearing and end caps 12 4 3 3 Replacing the piston components 12 4 3 4 Inserting the piston rod into the cylinder barrel 13 4 3 5 Repairing and attaching the bearing...

Страница 5: ...website www Festo com Spare parts documentation Contains an overview of the spare and wearing parts as well as information on their installation Can be found in the online spare parts catalogue on the...

Страница 6: ...esto sales office offers the option of having the repair carried out by Festo Environment Components and equipment replaced as part of a repair must be disposed of in accordance with the locally valid...

Страница 7: ...the data sheet It is available on the Festo website www Festo com 2 3 Repair relevant features Some of the features that the cylinder with piston rod can be equipped with require a different repair a...

Страница 8: ...the orientation designations of the cylinder with piston rod as well as the different variants of the bearing cap and seals for repair relevant features Orientation Festo product identification rating...

Страница 9: ...intended only to provide an overview of the individual components To order spare and wearing parts please use the online spare parts catalogue on the Festo website spareparts festo com 1 14 15 16 13 1...

Страница 10: ...rew locking agent 8 Cushioning seal 9 O ring 10 Piston rod 11 Cushioning boss 12 Piston one piece Only with CRHD 32 13 Piston 14 Guiding band 15 O ring 16 Magnet 17 Threaded coupling Use screw locking...

Страница 11: ...en the cylinder is opened To prevent damage to sealing rims or guide surfaces do not use pointed or sharp edged assembly aids 4 2 Visual inspection Check the cylinder for visible damage that might imp...

Страница 12: ...s described above with the bearing cap Note The surface of the cylinder barrel should be repolished if it has been damaged Check the cylinder barrel and piston rod for damage The entire cylinder must...

Страница 13: ...set of wearing parts to the following parts Component Greasing Surface of piston rod Thin film1 Piston surface between lip rings Thin film1 Cushioning boss Thin film1 on outside 1 See chapter 5 2 2 T...

Страница 14: ...Remove the cushioning seal 4 from the bearing and end caps 1 3 2 4 Warning Check the plain bearing in the bearing cap for visible damage that might impair its function such as deposits and scoring Th...

Страница 15: ...ar as possible onto the cylinder barrel Push the piston as far as possible into the cylinder barrel To protect the bearing and seals place the appropriate assembly sleeve on the thread of the piston r...

Страница 16: ...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...

Страница 17: ...om the piston rod Remove the piston components from the piston rod noting the order and orientation Remove any residues of the screw locking agent from the threads of the piston rod and threaded coupl...

Страница 18: ...arrel Insert the piston fully into the cylinder barrel through the insert sleeve The sealing lip must not fold back against the inside of the piston Note If necessary use a flat and blunt edged object...

Страница 19: ...Area Greasing 1 Grease reservoir1 for piston rod Fill 2 3 with grease 2 External surface for bearing cap Thin film2 3 Grease reservoir1 for bearing Fill 2 3 with grease 1 See chapter 5 2 3 Grease rese...

Страница 20: ...he piston rod see chapter 7 2 Special tools Apply screw locking agent included in the set of wearing parts around three quarters of the bearing cap thread Push the bearing cap over the assembly sleeve...

Страница 21: ...linder barrel to produce an even lubricant film 5 2 1 Extremely thin grease film A barely continuous film of grease covers the bearing surface The grease can give a sheen to the surface however the co...

Страница 22: ...CRHD 100 Gy Mounting sleeve for piston rod The mounting sleeve for piston rods for protecting the piston rod seal and the bearing in the bearing cap while the repair is being carried out must be prod...

Страница 23: ...further developed with regard to hardware and software The hardware status and where applicable the software status of the product can be found on the type plate of the product If the electronic docu...

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