Related Manuals for Festo DNG Series
Summary of Contents for Festo DNG Series
- Page 1 Cylinder with piston rod Standard cylinder to ISO 15552 DNG / DNGL / DNGLZ DNGZK / DNGZS Repair instructions (en) 7DNGa_en...
- Page 2 Imprint 7DNGa_en (06.2013) Copyright: ©Festo AG & Co. KG Postfach 73726 Esslingen Germany Editorial team: SC-S Tel.: +49 (0) 711 / 347-0 Fax: +49 (0) 711 / 347-2144 E-mail: service_international@festo.com Internet: http://www.festo.com Reproduction, distribution or sale of this document or communication of its contents to others without express 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.
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Page 4: Table Of Contents
4.5.1 Disassembling the adjustable end-position cushioning (PPV) 4.5.2 Assembling the adjustable end-position cushioning (PPV) Cleaning and greasing Cleaning Greasing 5.2.1 Extremely thin grease film 5.2.2 Thin grease film 5.2.3 Grease reservoir Maintenance and care Tools Standard tools Special tools Liability 4 / 28 Festo 7DNGa_en... -
Page 5: Important Information
Can be found in the online spare DNGL / DNGLZ / DNGZK / DNGZS are commissioning, maintenance parts catalogue on the Festo fully repairable in the event of damage and care, etc. Can be found on the website (www.Festo.com). -
Page 6: General Safety Instructions
Repairs must only be carried out in conjunction with these repair instructions and the device-specific operating instructions. 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: Type Codes (Ascertaining The Features Of A Cylinder)
The precise features of the current cylinder with piston rod can be ascertained with the help of the rating plate on the cylinder. The type designation is located directly beneath the Festo logotype and describes the cylinder's features separated by a hyphen (-). -
Page 8: Mounting Direction And Bearing Cap Variants
This diagram provides an overview of 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 identifi cation (rating plate) as reference point O = top... -
Page 9: Component Overview
Component overview up to a piston diameter of 100 mm 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). Festo 7DNGa_en... - Page 10 Ring magnet Threaded coupling Not S2, use screw locking agent Piston rod Only S2, use screw locking agent? Cylinder barrel Socket head screw DNGLZ and DNGZK only Trunnion mounting DNGLZ and DNGZK only End cap 10 / 28 Festo 7DNGa_en...
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Page 11: Component Overview From A Piston Diameter Of 125 Mm
Component overview from a piston diameter of 125 mm 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). Festo 7DNGa_en... - Page 12 Not S2, use screw locking agent Piston rod Only S2, use screw locking agent? Cylinder barrel Trunnion mounting DNGZS only Socket head screw DNGLZ and DNGZK only Trunnion mounting DNGLZ and DNGZK only End cap 12 / 28 Festo 7DNGa_en...
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Page 13: Repair Steps
The cylinders type DNG / DNGL / DNGLZ / DNGZK and DNGLZS-… with the following features can be repaired using the description in this chapter: Code Description Adjustable pneumatic cushioning External position sensing Through piston rod Stainless steel piston rod Piston rod with high corrosion protection Festo 7DNGa_en 13 / 28... -
Page 14: Structure Of The Bearing Cap
In some series and variants the bearing and end caps may differ from the versions shown here. The precise design of the bearing and end caps must be determined before each repair using the parts lists in the online spare parts catalogue on the Festo website (spareparts.festo.com) and taken into consideration during the repair. Bearing cap DNG... -
Page 15: Replacing The Piston Components
30 Nm DNG / DNGZK-125 160 Nm DNG / DNGZK-160 330 Nm DNG / DNGZK-200 330 Nm DNG-250 700 Nm DNG-250-…-S2 700 Nm DNGZS-250 700 Nm DNG-320 1300 Nm DNG-320-…-S2 1200 Nm DNGZS-320 1200 Nm Festo 7DNGa_en 15 / 28... -
Page 16: Inserting The Piston Rod Into The Cylinder Barrel
(from the front and rear bearing cap on cylinders with a through piston rod (S2)). • Remove the cushioning seal from the bearing cap and end cap (the rear bearing cap on cylinders with through piston rod (S2 )). 16 / 28 Festo 7DNGa_en... - Page 17 • Only on cylinders with a piston diameter of 125 mm to 200 mm – Insert the new retaining ring upstream of the new cushioning seal in the bearing cap and end cap (in the front and rear bearing cap on cylinders with a through piston rod (S2)). Festo 7DNGa_en 17 / 28...
- Page 18 DNG / DNGL / DNGLZ / DNGZK-100 30 Nm DNG / DNGZK-125 70 Nm DNG / DNGZK-160 100 Nm DNG / DNGZK-200 100 Nm DNG-250 90 Nm DNG-250-…-S2 140 Nm DNGZS-250 140 Nm DNG / DNGZS-320 280 Nm 18 / 28 Festo 7DNGa_en...
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Page 19: Structure Of The Bearing Cap
• Perform a functional test as per the operating instructions (enclosed with the cylinder or can be called up on the Festo website (www.Festo.com)) and commission the repaired cylinder. Repairing the cylinders DNG / DNGL / DNGLZ / DNGZK / DNGLZS-…-S6 Cylinders type DNG / DNGL / DNGLZ / DNGZK / DNGLZS-…-S6 with the following features can be repaired by following... -
Page 20: Removing The Bearing And End Caps
Remove any residue of the screw locking agent from the threads of the piston rod and threaded coupling. • Replace the components with those included in the set of wearing parts and reassemble the piston components on the piston rod in the correct order. 20 / 28 Festo 7DNGa_en... -
Page 21: Inserting The Piston Rod Into The Cylinder Barrel
Pull the piston rod back again until the piston is sitting fully in the cylinder barrel. Note This approach ensures that the sealing lips of the two lip rings sit correctly in the cylinder barrel. Festo 7DNGa_en 21 / 28... -
Page 22: Repairing And Attaching The Bearing And End Caps
See chapter 5.2.2 "Thin grease fi lm" 1 2 3 • Insert the piston rod seal into the bearing cap using an appropriate pressure piece. Note Note the mounting direction (individual sealing lips facing out). 22 / 28 Festo 7DNGa_en... - Page 23 Only cylinders with a piston diameter of 250 mm and 320 mm have washers between the collar nut and the bearing or end cap. • Screw the collar nuts and washers in the bearing cap onto the tie rods, while holding the collar nuts in the end cap. Festo 7DNGa_en 23 / 28...
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Page 24: Repairing The Adjustable End-Position Cushioning (Ppv)
22 Nm • Perform a functional test as per the operating instructions (enclosed with the cylinder or can be called up on the Festo website (www.Festo.com)) and commission the repaired cylinder. Repairing the adjustable end-position cushioning (PPV) The cylinders are also maintenance-Components of... -
Page 25: Disassembling The Adjustable End-Position Cushioning (Ppv)
Screw in the regulating screw 3. • Insert the serrated ring 1 in the bearing cap or end cap using a suitable tool (in the front and rear bearing caps on cylinders with a through piston rod (S2)). Festo 7DNGa_en 25 / 28... -
Page 26: Cleaning And Greasing
Festo recommends Loctite 7063 and Loctite 7070 for cleaning. When using other cleaning agents, make sure that they do not corrode the seals of the cylinder with piston rod. In case of doubt, check the resistance of the seals using the data on the Festo website (www.Festo.com). Greasing The various components and seals of the cylinder with piston rod require different levels of greasing depending on a number of factors. -
Page 27: Tools
"Accessories, equipment and tools" (7Accessories_a_en). It 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 Liability The General Terms and Conditions of Sale of Festo AG & Co. KG, which can be viewed on the Festo website (www.Festo.com), apply. Festo 7DNGa_en 27 / 28... - Page 28 Festo or third parties have The latter applies particularly to extracts protection rights concerning this electronic of the documents for the user’s own Example: E 2003, Festo AG & Co. KG, documentation which Festo makes available documentation. The guarantee and liability D-73726 Esslingen...
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