Festo ELGA-TB-G-70 Repair Instructions
  1. Manuals
  2. Brands
  3. Festo Manuals
  4. Industrial Equipment
  5. ELGA-TB-G-70
  6. Repair instructions

Festo ELGA-TB-G-70 Repair Instructions

Toothed belt axis
Hide thumbs
Table of Contents

Advertisement

Quick Links

Toothed belt axis
DGE-25-ZR-...(-KF)
DGE-40-ZR-...(-KF)
DGE-63-ZR-...(-KF)
Repair
instructions (en)
7DGE_25-63_ZR_KFb_en

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the ELGA-TB-G-70 and is the answer not in the manual?

Questions and answers

Related Manuals for Festo ELGA-TB-G-70

Summary of Contents for Festo ELGA-TB-G-70

  • Page 1 Toothed belt axis DGE-25-ZR-…(-KF) DGE-40-ZR-…(-KF) DGE-63-ZR-…(-KF) Repair instructions (en) 7DGE_25-63_ZR_KFb_en...
  • Page 2 Imprint Version: 7DGE_25-63_ZR_KFb_en (11.2011) Copyright: ©Festo AG & Co. KG P.O. Box D-73726 Esslingen Editorial team: SC-S Tel.: +49 (0) 711/347-0 E-mail: service_international@festo.com Internet: http://www.festo.com The reproduction, distribution and utilisation of this document as well as the communication of its contents to others without explicit authorisation is prohibited.
  • Page 3 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 improper use of the products.

  • Page 4: Table Of Contents

    4.6.1 Buffer and belt assembly 4.6.2 Switching characteristics of the magnet 4.6.3 No-load torque Maintenance Cleaning and lubricating the toothed belt axis Lubricating the recirculating ball bearing guide Toothed belt pretension Moment compensator play Tools Liability 4 / 48 Festo 7DGE_25-63_ZR_KFb_en...

  • Page 5: Important Information

    The toothed belt axis DGE-…-ZR is installation, commissioning, care catalogue on the Festo website fully repairable. The costs of carrying out a repair must, however, be consid- and maintenance, etc. Can be (www.Festo.com).

  • Page 6: General Safety Information

    Repairs must only be carried out in conjunction with these repair instructions as well as the respective operating instructions for the device. Note Instead of carrying out the repair yourself, your local Festo 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 environmental protection regulations.

  • Page 7: Types And Part Numbers

    193742 axes DGE-… -ZR can be found in the product catalogue or DGE-40-…-ZR 193743 on the Festo website (www.Festo.com). DGE-63-…-ZR 193744 Overview of variants and mounting directions This diagram provides an overview of the mounting directions and variants for the toothed belt axis.

  • Page 8: Component Overview

    Component overview DGE-25-…-ZR 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). 8 / 48 Festo 7DGE_25-63_ZR_KFb_en...
  • Page 9 Socket head screw DIN 912-M4×25-8.8 Clamp piece Magnet Clamp piece module Cylindrical dowel pin DIN 7-M6×10 Guiding band Sealing lip Band guide Piston Piston module Countersunk screw DIN 7991-M5×8-A2-70 Tightening torque 4.0 Nm Scraper Compression spring Adapter Festo 7DGE_25-63_ZR_KFb_en 9 / 48...
  • Page 10 DGE-40-…-ZR 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). 10 / 48 Festo 7DGE_25-63_ZR_KFb_en...
  • Page 11 Socket head screw M4×40-12.9 Clamp piece Magnet Clamp piece module Cylindrical dowel pin DIN 7-M6×25 Guiding band Sealing lip Band guide Piston Piston module Countersunk screw DIN 7991-M6×10-A2-70 Tightening torque 8.0 Nm Scraper Compression spring Adapter Festo 7DGE_25-63_ZR_KFb_en 11 / 48...
  • Page 12 DGE-63-…-ZR 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). 12 / 48 Festo 7DGE_25-63_ZR_KFb_en...
  • Page 13 DIN 7-M6×45 Socket head screw DIN 912-M5×50-12.9 Washer DIN 433-5.3 Guiding band Sealing lip Band guide Piston Piston module Countersunk screw DIN 7991-M6×10-A2-70 Tightening torque 8 Nm Spring pin DIN 7344-M6×22 Scraper Compression spring Adapter Festo 7DGE_25-63_ZR_KFb_en 13 / 48...

  • Page 14: Repair Steps

    • Drive out the securing pin using a punch with a diameter as specified below. • Use the following punches: – DGE-25: 5 mm ø – DGE-40: 7 mm ø – DGE-63: 9 mm ø 14 / 48 Festo 7DGE_25-63_ZR_KFb_en...

  • Page 15: Removing The Cover Strip

    • Loosen the four screws in the piston and unscrew them. • DGE-63 only: Drive out the two spiral spring pins using a punch. Festo 7DGE_25-63_ZR_KFb_en 15 / 48...

  • Page 16: Removing The Drive Covers And The Toothed Belt

    Remove the cover cap in the drive cover. • Guide an Allen key through the hole in the drive cover. • Unscrew the tightening bolt fully from the piston. • Loosen the screws in the drive cover and unscrew them. 16 / 48 Festo 7DGE_25-63_ZR_KFb_en...

  • Page 17: Removing And Dismantling The Piston

    A description of how to dismantle and repair the drive covers can be found in section 4.3 “Drive covers”. 4.1.4 Removing and dismantling the piston • Carefully push the piston out of the cylinder barrel. Festo 7DGE_25-63_ZR_KFb_en 17 / 48...

  • Page 18: Linear Recirculating Ball Bearing Guide System (Dge

    Follow the steps below to repair the linear recirculating ball bearing guide system: • Remove the guide rail (see section 4.2.1). • Replace the roller bearing cartridges (see section 4.2.2). • Install the guide rail with slide (see section 4.2.3). 18 / 48 Festo 7DGE_25-63_ZR_KFb_en...

  • Page 19: Removing The Guide Rail

    The covers must be replaced. It is not possible to remove them without damaging them. • Unscrew all the socket head screws in the guide rail. • Remove the guide rail from the cylinder barrel. The slot nuts can remain in the cylinder barrel. Festo 7DGE_25-63_ZR_KFb_en 19 / 48...

  • Page 20: Replacing The Roller Bearing Cartridges

    Make sure that no bearings come out of the roller bearing cartridges during this process. Note Bearings that have come out of the roller bearing cartridges must be re- placed in the corresponding bearing. 20 / 48 Festo 7DGE_25-63_ZR_KFb_en...
  • Page 21 Poor operating behaviour manifests itself through operat- ing noise. Excessive pretensioning manifests itself through harsh, increased operating noise. • Adjust the setting of the threaded pins until the operating behaviour is flaw- less. Festo 7DGE_25-63_ZR_KFb_en 21 / 48...

  • Page 22: Installing The Guide Rail With Slide

    Make sure that none of the bearings come out of the roller bearing car- tridges. • If necessary, insert the slot nuts into the cylinder barrel. • Place the guide rail with slide on the cylinder barrel. 22 / 48 Festo 7DGE_25-63_ZR_KFb_en...
  • Page 23 The sealing caps must be flush with the guide rail. Use a flat piece of wood or a wide plastic hammer, for example, so as not to damage the sealing caps or the guide rail. • If necessary, remove any material chipped from the sealing caps with a cloth. Festo 7DGE_25-63_ZR_KFb_en 23 / 48...

  • Page 24: Drive Covers

    Removing the toothed drive shafts • Remove the retaining ring opposite the drive trunnion. Note In the case of toothed drive shafts with two or no drive trunnions, you can remove any retaining ring. 24 / 48 Festo 7DGE_25-63_ZR_KFb_en...
  • Page 25 Note Any installation direction can be chosen for toothed drive shafts with two or no drive trunnions. • Insert the retaining ring. Note Check that the retaining ring is correctly positioned. Festo 7DGE_25-63_ZR_KFb_en 25 / 48...

  • Page 26: Replacing The Toothed Belt

    (horizontal/vertical) as well as the specified maximum driving torque or the feed force correspond to the permissible values for the toothed belt axis used. – Use the Festo “Positioning Drives” sizing software, available via the Festo website (www.Festo.com), to size the toothed belt axis. • Ambient conditions/material resistance Check whether the ambient temperature is within the permissible range.

  • Page 27: Assembling The Toothed Belt Axis

    = 20 mm Assembling the toothed belt axis • If you have not already done so, assemble the guide rail with slide on the cylinder barrel as described in section 4.2.3 “Installing the guide rail with slide”. Festo 7DGE_25-63_ZR_KFb_en 27 / 48...

  • Page 28: Preparing The Cylinder Barrel

    Countersink diameter D DGE-25 ø 11 DGE-40 ø 13 90° DGE-63 ø 17.2 • Check the following wearing parts on the piston and replace them if necessary: – Guiding bands – Band guides – Lateral scrapers 28 / 48 Festo 7DGE_25-63_ZR_KFb_en...

  • Page 29: Inserting The Piston, Clamp Pieces And Toothed Belt

    ® ® on the adjusting screw call for the use of only original spare parts from Festo with the appropriate strength class. Otherwise the screws can break prematurely. Note The clamping effect of the HELICOIL ®...
  • Page 30 • Insert the clamping body into the piston. • Screw the socket head screw into the piston through the clamp piece. Note (DGE-63 only) The socket head screw must be fitted with a washer. 30 / 48 Festo 7DGE_25-63_ZR_KFb_en...
  • Page 31 Note (DGE-25 only) Pay attention to the position of the clamping plate. The flattened side of the slot and the chamfered end must be pointing away from the toothed belt. Festo 7DGE_25-63_ZR_KFb_en 31 / 48...
  • Page 32 Apply Loctite 243 to the flange screws and screw them into the cylinder barrel through the drive cover. Note (DGE-63 only) The drive cover is secured by means of four screws and must be aligned centrally with respect to the cylinder barrel before being tightened. 32 / 48 Festo 7DGE_25-63_ZR_KFb_en...

  • Page 33: Checking And Setting The Toothed Belt Pretension

    5 mm Alternatives for toothed belt axes with very short stroke. Note The longer strand length should preferably be set if possible. A longer freely oscillating strand length reduces the variation of the measurement results. Festo 7DGE_25-63_ZR_KFb_en 33 / 48...
  • Page 34 Turning the tightening bolt clockwise increases the tension in the toothed belt, and with this its oscillation frequency. Turning the tightening bolt anticlockwise decreases the tension in the toothed belt, and with this its oscillation frequency. 34 / 48 Festo 7DGE_25-63_ZR_KFb_en...
  • Page 35 The pretension of the toothed belt diminishes during storage and operation. This is a normal process and not an indication of wear. • Insert the sealing caps into the holes in the drive covers at both ends of the toothed belt axis. Festo 7DGE_25-63_ZR_KFb_en 35 / 48...

  • Page 36: Additional Information On Checking The Toothed Belt Pretension

    For this reason, several measurements should always be carried out to differentiate the necessary basic oscillation (natural frequency) from the harmonic oscillation. Only this frequency can be used to extrapolate the force acting along the strand. 36 / 48 Festo 7DGE_25-63_ZR_KFb_en...

  • Page 37: Installing The Cover Strip

    In the case of axes without slide, insert the locking pin into the piston. • Apply grease to the scrapers (see section 5.1 “Cleaning and lubricating the toothed belt axis”). • Insert the adapter with the scrapers and springs into the piston. Festo 7DGE_25-63_ZR_KFb_en 37 / 48...

  • Page 38: Connecting The Slide To The Piston (Dge

    Place the cover caps on the clamp pieces at both ends of the toothed belt axis. 4.5.8 Connecting the slide to the piston (DGE-…-KF only) • Loosen the two threaded pins in the slide so that the moment compensator is loose and then remove it. 38 / 48 Festo 7DGE_25-63_ZR_KFb_en...
  • Page 39 You can place the pin in a freezer compartment for a few minutes to make assembly easier. • Align the pin so that the flattened side is parallel with the edge of the slide. • Slowly drive the pin through the moment compensator and piston using a punch. Festo 7DGE_25-63_ZR_KFb_en 39 / 48...

  • Page 40: Assembly And Function Check

    It must be possible to move the piston without much resistance or jerking when idle, without a drive attached or load connected. This check is based on the technician's instinct and experience. It is not possible to specify precise test values. 40 / 48 Festo 7DGE_25-63_ZR_KFb_en...

  • Page 41: Maintenance

    The recirculating ball bearing guide must be relubricated at set intervals using a grease gun. Note The press-fitted lubrication nipples are funnel-type lubrication nipples based on DIN 3405. Festo offers a one-hand high-pressure grease gun with a suitable pinpoint nozzle for greasing these lubrication nipples (see section 6.2 “Special tools”).

  • Page 42: Toothed Belt Pretension

    Check as part of maintenance if there is any play between the moment compensator and the hexagon pins in the slide. • If necessary, adjust the two threaded pins to ensure the moment compensator fits free of play (see section 4.5.7 “Installing the cover strip”). 42 / 48 Festo 7DGE_25-63_ZR_KFb_en...

  • Page 43: Tools

    The following special tools are required to repair and maintain the toothed belt axis: Designation Additional information Festo order no. Photo One-hand high-pressure Pinpoint nozzle for 647 958 grease gun miniature funnel-type lubrication nipple See “Assembly aids” in the online spare parts catalogue on the Festo website (www.Festo.com). Festo 7DGE_25-63_ZR_KFb_en 43 / 48...
  • Page 44 Available exclusively from Schaefer Technik GmbH www.schaefer-technik.de – Acoustic belt tension meter (frequency meter) for measurement without test equipment. Not available via Festo. Manufacturer/supply: Optibelt GmbH www.optibelt.com or comparable meter from other manufacturers. 200926 Mounts the acoustic test probe in the test equipment by means of clamping friction.

  • Page 45: Liability

    +0.2 f=45.1 f=64.1 f=106.1 +0.2 +0.2 +0.2 g=70 mm g=90 mm g=136 mm Liability The General Terms and Conditions of Festo AG & Co. KG, which can be viewed on the Festo website (www.Festo.com) apply. Festo 7DGE_25-63_ZR_KFb_en 45 / 48...
  • Page 46 Festo shall have the correspond- status as the last printed edition. and 2 completely to a third party. The third ing rights of use. Festo permits the user to party must be made explicitly aware of these 2. Furthermore, Festo cannot be held liable use the electronic documentation under the conditions of use.
  • Page 49 Toothed belt pretension test equipment Operating instructions (en) 7Tension01_TBb_en...
  • Page 50 Imprint Version: 7Tension01_TBb_en (11.2011) Copyright: ©Festo AG & Co. KG P.O. Box D-73726 Esslingen Editorial team: SC-S Tel.: +49 (0) 711/347-0 E-mail: service_international@festo.com Internet: http://www.festo.com The reproduction, distribution and utilisation of this document as well as the communication of its contents to others without explicit authorisation is prohibited.
  • Page 51 These operating instructions have been prepared with care. Festo AG & Co. KG does not, however, accept liability for any errors in these operating instructions or their consequences. Likewise, no liability is accepted for direct or consequential damage resulting from improper use of the product.
  • Page 52 6.3.1 Checking the toothed belt pretension 6.3.2 Setting the toothed belt pretension 6.3.3 Additional information on checking the toothed belt pretension Quick guide DGE-…-ZR(-KF) DGE-…-ZR-RF EGC-…-TB-KF ELGA-TB-G-… Maintenance and care Accessories and ordering data Assembly and function check Tools Liability 4 / 20 Festo 7Tension01_TBb_en...

  • Page 53: Important Information

    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. Documents This sign contains references to other sections or documents containing additional information. Festo 7Tension01_TBb_en 5 / 20...

  • Page 54: General Safety Information

    Mounting kit for ELGA-TB 1 Position stop bolt 2 Position stop, left 3 Position stop, right 4 Distance piece for ELGA-TB-G-120 5 Distance piece for ELGA-TB-G-80 6 Distance piece for ELGA-TB-G-70 7 Transport holder for distance pieces 6 / 20 Festo 7Tension01_TBb_en...

  • Page 55: Function And Application

    Checking and setting the toothed belt pretension must only be performed on toothed belt axes whose electric power units have been disconnected. The information in the corresponding repair instructions for the respective toothed belt axis apply to the steps described in these operating instructions. Festo 7Tension01_TBb_en 7 / 20...

  • Page 56: Application And Operation

    • If necessary, push the relevant clamp piece through the recess in the cylinder barrel between the toothed belt and the cylinder barrel. It must touch the clamping body. 8 / 20 Festo 7Tension01_TBb_en...

  • Page 57: Preparing The Test Equipment

    25 mm EGC-50-TB-KF 25 mm EGC-70-TB-KF 25 mm EGC-80-TB-KF 25 mm EGC-120-TB-KF 25 mm EGC-185-TB-KF 25 mm ELGA-TB-G-70 25 mm ELGA-TB-G-80 25 mm ELGA-TB-G-120 25 mm • Screw the plunger housing back into the test equipment. Festo 7Tension01_TBb_en 9 / 20...

  • Page 58: Attaching The Stop Bolts

    13 mm DGE-40-ZR-RF 13 mm DGE-63-ZR-RF 13 mm EGC-50-TB-KF 8 mm EGC-70-TB-KF 11 mm EGC-80-TB-KF 13 mm EGC-120-TB-KF 13 mm S.L.: C, S.R.: F EGC-185-TB-KF 13 mm ELGA-TB-G-70 11 mm ELGA-TB-G-80 11 mm ELGA-TB-G-120 11 mm 10 / 20 Festo 7Tension01_TBb_en...

  • Page 59: Attaching The Test Equipment

    Push the test equipment forwards so that the position stops on the cylinder barrel touch the toothed belt axis. Note (DGE-…-ZR-KF) The guide rail of the toothed belt axis must be pointing forwards to check the toothed belt pretension. Festo 7Tension01_TBb_en 11 / 20...
  • Page 60 • Push the test equipment backwards so that it is touching the guide rail. Note The test equipment is attached to the guide rail by means of integrated magnets. 12 / 20 Festo 7Tension01_TBb_en...
  • Page 61 • Push the measurement head of the acoustic belt tension meter all the way into the holder on the test equipment. Festo 7Tension01_TBb_en 13 / 20...

  • Page 62: Checking And Setting The Toothed Belt Pretension

    The belt must be able to oscillate freely. Push clamp pieces into the toothed belt axis if necessary (see section 6.2 “Preparing the test equipment”). To assess the toothed belt pretension, several measurements should be made to balance out any measurement tolerances. 14 / 20 Festo 7Tension01_TBb_en...

  • Page 63: Setting The Toothed Belt Pretension

    A force stimulus is applied to the toothed belt to start it oscillating. The natural frequency of the toothed belt generated in this way is recorded using a meter and displayed as a frequency value in hertz. Festo 7Tension01_TBb_en 15 / 20...

  • Page 64: Quick Guide

    25 mm S.L. 8 mm/A EGC-70-TB-KF 25 mm S.R. 11 mm/B EGC-80-TB-KF 25 mm S.L. 13 mm/C EGC-120-TB-KF 25 mm S.L. or S.R. 13 mm/S.L.: C, S.R.: F EGC-185-TB-KF 25 mm S.L. or S.R. 13 mm/E 16 / 20 Festo 7Tension01_TBb_en...

  • Page 65: Elga-Tb-G

    ELGA-TB-G-80 25 mm S.L. or S.R. 11 mm/E ELGA-TB-G-120 25 mm S.L. or S.R. 13 mm/E Maintenance and care If necessary, clean the toothed belt pretension test equipment using a soft cloth and gentle detergent. Festo 7Tension01_TBb_en 17 / 20...

  • Page 66: Accessories And Ordering Data

    TB-TE-EQ4/760460 (ELGA-TB) and test equipment TB-TE-EQ5/760461 (ERMB/EHMB). Assembly and function check After completing the setting work on the toothed belt axis, the correct function must be checked using the relevant chap- ters in the repair instructions. 18 / 20 Festo 7Tension01_TBb_en...

  • Page 67: Tools

    Refer to the repair instructions for the respective toothed belt axis for an overview of the tools and aids for setting the toothed belt pretension. Liability The General Terms and Conditions of Festo AG & Co. KG, which can be viewed on the Festo website (www.Festo.com) apply. Festo 7Tension01_TBb_en...
  • Page 68 Festo shall have the correspond- status as the last printed edition. and 2 completely to a third party. The third ing rights of use. Festo permits the user to party must be made explicitly aware of these 2. Furthermore, Festo cannot be held liable use the electronic documentation under the conditions of use.

Table of Contents