Festo DGC G Series Guide de configuration

Repair

instructions (en)

Linear drive

DGC-…-G

7DGC-Ga_en

Imprint

Version:

7DGC-Ga_de (09.2009)

©Festo AG & Co. KG

Postfach

D-73726 Esslingen

Editorial department:

SC-S

Phone:

+49 / 711 / 347-0

Email:

[email protected]

Internet:

http://www.festo.com

The reproduction, distribution and

utilisation of this document as well

as the communication of its contents

to others without expressed authori-

sation is prohibited. Violations will

give rise to damage claims. All rights

reserved, in particular the right to

le patent, utility model or registered

design applications.

All product designations and brand

names used are the property of the

owners and not explicitly identied

as such.

All technical data subject to change

according to technical updates.

3 / 48Festo 07DGC-Ga_en

Foreword

These repair instructions are valid for the linear drives listed on the title page to

the exclusion of any liability claims.

Deviations compared to the descriptions in these repair instructions may arise

depending on the design and/or modication status of the specic linear drive.

The user must check this prior to carrying out the repair and take the deviations

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 consequences. Likewise, no liability is accepted for

direct or consequential damage resulting from incorrect use of the products.

You will nd further information on this in Chapter 7 “Liability/conditions of use”.

The relevant regulations on occupational safety, safety engineering and interfer-

ence suppression as well as the stipulations contained in these repair instruc-

tions must be observed when working on the products.

4 / 48 Festo 07DGC-Ga_en

Table of contents

1 Important information 5

1.1 About these repair instructions 5

1.2 Pictograms used in these repair instructions 5

1.3 General safety instructions 6

2 General product description 6

2.1 Functional description 6

2.2 Types and part numbers 7

2.3 Mounting directions 7

3 Component overview 8

3.1 DGC-8/12-…-G 8

3.2 DGC-18/25-…-G 10

3.3 DGC-32/40-…-G 12

3.4 DGC-50/63-…-G 14

4 Repair steps 16

4.1 Linear drives DGC-8/12-…-G 17

4.1.1 Dismantling the linear drive 17

4.1.2 Assembling the linear drive 18

4.1.3 Replacing the slide elements in the slide 21

4.1.4 Setting the sliding play on the slide 22

4.1.5 Replacing the coupling on the slide 23

4.1.6 Replacing the cushioning components 24

4.2 Linear drives DGC-18/25/32/40-…-G 25

4.2.1 Dismantling the linear drive 25

4.2.2 Assembling the linear drive 27

4.2.3 Dismantling and repairing the piston module 31

4.2.4 Replacing the buffer strips 32

4.2.5 Replacing the sealing rings for the supply ports in the end caps 32

4.3 Linear drives DGC-50/63-…-G 33

4.3.1 Dismantling the linear drive 33

4.3.2 Assembling the linear drive 36

4.3.3 Replacing the slide elements in the slide 41

4.3.4 Replacing the buffer strips 42

4.3.5 Replacing the sealing rings for the supply ports in the end caps 42

5 Maintenance 43

5.1 Greasing the linear drive 43

6 Tools 44

6.1 Required tools by size 44

7 Liability/Conditions of use 44

5 / 48Festo 07DGC-Ga_en

Important information1

About these repair instructions1.1

This document contains important

information about the professional

repair of the linear drive type DGC-…-G.

The DGC-…-G linear drive is fully

repairable. However, in case of larger

defects, the costs of carrying out a

repair must be considered.

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 while doing repair work on

the linear drive:

Operating instructions•

Contains information about the

control parts and connections

for the linear drive, as well as

information about function, con-

struction, application, installation,

commissioning, care and mainten-

ance, etc. It 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 infor-

mation on their installation. The

spare parts documentation can

be found in the online spare parts

catalogue on the Festo website

(spareparts.Festo.com).

Assembly tools•

Contains an overview of the

available assembly tools such as

lubricants, thread locking agents,

maintenance tools etc. (aids for

assembly and maintenance). They

can be found in the online spare

parts catalogue on the Festo web-

site (www.Festo.com).

Pictograms used in these repair instructions1.2

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 indicates important tips and information that can make your work easier.

Environment

This sign indicates 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.

Documents

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

6 / 48 Festo 07DGC-Ga_en

General safety instructions1.3

Warning

The linear drive must only be repaired by authorised and trained persons in accordance with the specications in the

technical documentation and using original spare parts.

Installation and repair by unauthorised and untrained persons, repairs using non-original spare parts, as well as with-

out the technical documentation required for installation and/or repair, are dangerous and therefore not permitted.

Repairs must only be carried out in conjunction with these repair instructions as well as the respective device-specic

operating instructions.

Note

Instead of carrying out the repair yourself, your local Festo sales ofce 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 envir-

onmental protection regulations.

General product description2

Functional description2.1

The DGC-…-G is the basic version of the DGC linear drive family. It is a linear drive with the functional principle of a

double-acting piston for power transmission. When compressed air is applied to the ports alternately, the piston moves

backwards and forwards in the piston chamber. A rigid connection moves the slide with the attached load (e.g. adapter

plate with drive) on the guide rail. The slot in the cylinder barrel required for this is covered by a band system. The slide is

mounted on slide elements and thus only designed for low-level loads. The operating behaviour in case of torsional loads

is in the medium range.

The DGC-…-G, when used properly, is used for transporting loads in a space-saving manner and is approved for the

operating modes slide mode and yoke mode (adhere to the load limits).

These graphics provide you with an overview of the construction of the linear drive using the DGC-25-…-G as an example.

1Guide rail

2Slide

3Slide-piston connection

4Cover band

5Slide element

6Coupling

7Piston

8Cylinder barrel

9Sealing band

7 / 48Festo 07DGC-Ga_en

Types and part numbers2.2

Type Part number

DGC-8-…-G 530906

DGC-12-…-G 530907

DGC-18-…-G 532446

DGC-25-…-G 532447

DGC-32-…-G 532448

DGC-40-…-G 532449

DGC-50-…-G 532450

DGC-63-…-G 532451

The complete overview of features, accessories,

type codes, technical data and dimensions for the DGC-…

linear drives can be found in the product catalogue or on

the Festo website (www.Festo.com).

Mounting directions2.3

This graphic provides you with an overview of the mounting directions of the linear drive using the DGC-25-…-G as an

example.

DGC-25-

330-G-

PPV-A

123456

W708

Type = Product designation

(name plate)

O = Top

U = Underneath

R = Right

L = Left

V = Front

H = Rear

8 / 48 Festo 07DGC-Ga_en

Component overview3

DGC-8/12-…-G3.1

This diagram is 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).

9 / 48Festo 07DGC-Ga_en

Entry Designation Type Note

DGC-8-…-G DGC-12-…-G DGC-8-…-G DGC-12-…-G

1 Threaded pin or blanking

plug, depending on series

status

Tightening torque 5.0 Nm,

use LOCTITE 222

Tightening torque 5.0 Nm,

use LOCTITE 222

2 Sealing ring

3 Self-tapping screw TPD-WN122-

M3×18-450

M5×20-10.9

Tightening torque 2.0 Nm ± 20%,

use LOCTITE 243

Tightening torque 3.0 Nm ± 20%,

use LOCTITE 243

4 End cap, left

5 Elastic cushioning element Tightening torque 2.0 Nm ± 20%

6 Shock absorber Tightening torque 2.0 Nm ± 20%

7 Shock absorber Tightening torque 2.0 Nm ± 20%

8 O-ring 3×1-N-

NBR75

3×2-N-

NBR70

9 Clip

10 Buffer

11 Buffer/piston seal

12 Cylinder barrel

13 Piston

14 Piston module

15 Wiper seal

16 Slide element

17 Slide element

18 Coupling

19 Stop

20 Screw M2×7.5-8.8

internal Torx T6

Tightening torque 0.3 Nm, use LOCTITE 243

21 Slide

22 Socket head screw DIN 912-

M3×8-8.8

DIN 912-

M4×8-8.8

Tightening torque 1.4 Nm, use LOCTITE 243

Sealed with thread locker 397332

23 Sealing band

24 End cap, right

10 / 48 Festo 07DGC-Ga_en

DGC-18/25-…-G3.2

This diagram is 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).

789

11 12 13

17 18

8911 12

24 25 26

DGC-18-...-G

DGC-25-...-G

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