Festo DGC-K Series Einrichtungshandbuch

Repair

instructions

(en)

7DGC-Kb_en

Linear drive

DGC-K-…-

Editorial information

Version:

7DGC-Kb_en 8. April 2015

©Festo AG & Co. KG

Postfach

73726 Esslingen

Germany

Editorial team:

PM-SD

Tel.:

+49 (0) 711 / 347-0

E-mail:

[email protected]

Internet:

http://www.festo.com

The reproduction, distribution or sale

of this document or communication of

its contents to others without express

authorisation is prohibited. Offenders

will be held liable for damages. All

rights reserved in the event that a

patent, utility model or design patent

is registered.

All product designations and brand

names used are the property of the

owners and not explicitly identied

as such.

All technical data are subject to

change according to technical

updates.

3 / 49Festo 7DGC-Kb_en

Foreword

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

the exclusion of any liability claims.

The descriptions in these repair instructions may deviate 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.

More detailed information on this can be found in Chapter 8 “Liability”.

The relevant regulations on occupational safety, safety engineering and

interference suppression as well as the stipulations contained in these repair

instructions must be observed when working on the products.

4 / 49 Festo 7DGC-Kb_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

2.4 Type codes (identifying the features of a linear drive) 7

3 Component overview 8

3.1 DGC-K-18-…-GK 8

3.2 DGC-K-18-…-GK-D2 10

3.3 DGC-K-18-…-GV 12

3.4 DGC-K-18-…-GV-D2 14

3.5 DGC-K-25 / 32 / 40-…-GK 16

3.6 DGC-K-25 / 32 / 40-…-GK-D2 18

3.7 DGC-K-25 / 32 / 40-…-GV 20

3.8 DGC-K-25 / 32 / 40-…-GV-D2 22

3.9 DGC-K-50 / 63-…-GK / GV 24

3.10 DGC-K-50 / 63-…-GK / GV-D2 26

3.11 DGC-K-80-…-GK 28

3.12 DGC-K-80-…-GK-D2 30

4 Repair steps 32

4.1 Preparation 32

4.2 Visual inspection 32

4.3 Repairing the linear drive 32

4.3.1 Linear drive DGC-K-18 33

4.3.2 Linear drive DGC-K-25 / 32 / 40 / 50 / 63 38

4.3.3 Linear drive DGC-K-80 43

5 Cleaning 48

6 Maintenance 48

6.1 Maintenance of the band system 48

7 Tools 48

7.1 Required tools 48

8 Liability 48

5 / 49Festo 7DGC-Kb_en

1 Important information

1.1 About these repair instructions

This document contains important information about the professional repair of the linear drive type DGC-K.

The DGC-K linear drive is largely repairable.

However, the costs of carrying out a repair must be considered in the case of larger defects.

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

Contain information about the operating elements and connections for the linear drive, as well as information about

function, construction, application, installation, commissioning, care and maintenance, etc. These 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 (http://spareparts.festo.com).

– Assembly aids

Contains an overview of available assembly aids such as lubricating greases, locking agents, maintenance tools, etc.

(aids for assembly and maintenance). This can be found in the online spare parts catalogue on the Festo website

(http://spareparts.festo.com/xdki/data/SPC/0/PDF_SAFE/Hilfsmittel.pdf ).

1.2 Pictograms used in these repair instructions

Caution

... means that non-observance may result in personal injury and damage to property.

Note

... means that non-observance may result in damage to property.

Marking special information

The following pictograms mark passages in the text which contain special information.

Information:

Recommendations, tips and references to other sources of information.

Environment:

Information on the environmentally-friendly use of Festo products.

6 / 49 Festo 7DGC-Kb_en

1.3 General safety instructions

Caution

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 or without 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 and the device-specic operating

instructions.

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

environmental protection regulations.

2 General product description

2.1 Functional description

The DGC-K is a linear drive with the functional principle of a double-acting piston for power transmission.

This piston is designed so that it has an internal part and an external part – the mechanical customer interface. These

parts are rigidly connected with one another, making them one-piece. When compressed air is applied to the ports

alternately, the piston moves backwards and forwards in the slotted base prole. The slot is provided as a guide and is

covered by a sealing band system (with the exception of DGC-K-18) to seal off the internal part of the piston from the

external part.

The DGC-K, when used properly, is used for transporting loads in a space-saving manner and is suitable for slide

operation.

This illustration provides you with an overview of the construction of the linear drive using the DGC-K-25 as an example.

1 2 3 1Spring

2Wiper seal

3Regulating screw for end-position

cushioning

4End cap assembly

5Cushioning disc

6Cylinder barrel

7Sealing ring

8Sealing band

9Sealing band guide

aJ Cover strip

aA Flange screws

7 / 49Festo 7DGC-Kb_en

2.2 Types and part numbers

Type Part number

DGC-K-18-… 1312500

DGC-K-25-… 1312501

DGC-K-32-… 1312502

DGC-K-40-… 1312503

DGC-K-50-… 1312504

DGC-K-63-… 1312505

DGC-K-80-… 1312506

The complete overview of features, accessories, type

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

linear drives can be found in the product catalogue or on

the Festo website (www.festo.com).

2.3 Mounting directions

This illustration gives an overview of the orientation designation of the linear drive using the DGC-K-25 as an example.

Festo = Rating plate as reference

O = Top

U = Underneath

R = Right

L = Left

V = Front

H = Rear

2.4 Type codes (identifying the features of a linear drive)

The precise features of a linear drive can be identi ed with the help of the rating plate on the linear drive. The type

designation is located directly beneath the Festo logo and describes the linear drive's features separated by a hyphen (-).

Example:

DGC-K-25-400-PPV-A-GV-D2

1312501 C708

1Type designation

2Serial number

3Part number

The type designation on this rating plate provides the following information:

DGC-K Linear drive type DGC-K with double-acting pistons

25 Piston diameter 25 mm

400 Stroke 400 mm

PPV End-position cushioning adjustable at both ends

APosition sensing by magnetic piston

GV Lengthened piston

D2 Supply port on both sides

A list and description of all possible equipment features of the linear drive can be found in the data sheet, which is

available on the Festo website (www.festo.com).

8 / 49 Festo 7DGC-Kb_en

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 (http://spareparts.festo.com).

3 Components list

3.1 DGC-K-18-…-GK

22 2

9 / 49Festo 7DGC-Kb_en

Linear drive DGC-K-18-…-GK

No. Designation Type

1 Self-tapping screw M5×20-10.9

2 Clamping component

3 End cap module

4 O-ring B-11×1-N-NBR70

5 Seal

6 Piston seal

7 Piston cap

8 Cushioning boss

9 Magnet

10 Diverter

11 O-ring B-9.5×1.5-N-NBR70

12 Piston

13 Plain bearing

14 Piston module

15 Cover

16 Pressure support

17 Wiper seal

18 Sealing band

19 Cylinder barrel

20 Connection cap

21 Threaded pin DIN 913-M5×5-45H

22 Threaded pin DIN 913-M5×5-45H

23 End cap module

24 Lubricating grease LUB-KC1, silicone-free

25 Screw locking agent LOCTITE 243

10 / 49 Festo 7DGC-Kb_en

3.2 DGC-K-18-…-GK-D2

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 (http://spareparts.festo.com).

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