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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.
Pictograms used in these repair instructions General safety instructions General product description Functional description 2.1.1 Cut-away illustration of the flat cylinder DZF Type codes (ascertaining the features of a cylinder) Orientation designations Component overview Flat cylinder DZF-… Flat cylinder DZH-… Repair steps Preparation Visual inspection 4.3 Repairing the flat cylinder DZF-… 4.3.1 Structure of the bearing cap 4.3.2 Removing the bearing and end caps...
DZF/DZH. documents should therefore also be information on their installation. available when repairing the cylinder The cylinder with piston rod DZF / DZH Can be found in the online spare with piston rod: is fully repairable in the event of parts catalogue on the Festo damage due to normal wear.
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.
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 logo and describes the cylinder's features separated by a hyphen (-).
Flat cylinder DZF-… 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 / 24 Festo 7DZF / DZHb_en...
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Piston rod with male thread, hollow S20 only, use screw locking agent Cylinder barrel End cap The feature S6 indicates the design/material variants and is of little or no importance for the order of the repair steps. Festo 7DZF / DZHb_en 9 / 24...
Flat cylinder DZH-… 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 / 24 Festo 7DZF / DZHb_en...
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Only with DZH-…-S20, use screw locking agent Cylinder barrel End cap Cushioning boss Only from size DZH-50-… Groove ring Only from size DZH-50-… Piston Only from size DZH-50-… Magnet Only from size DZH-32-… Guiding band Only from size DZH-50-… Festo 7DZF / DZHb_en 11 / 24...
The following cylinders cannot be repaired: • DZF-12-… • DZF-18-… The description in this section can be used to repair cylinders of the type DZF-… with the following features: Code Description Male piston rod thread No specification Female piston rod thread...
(the rear part of the piston rod on cylinders with through piston rod (S2 / S20)). • 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. Festo 7DZF / DZHb_en 13 / 24...
The lip of the piston seal must not fold back against the side of the piston. Note If necessary use a flat and blunt-edged object to insert the piston seal into the cylinder barrel. • Insert the piston fully into the cylinder barrel. 14 / 24 Festo 7DZF / DZHb_en...
Fill 2/3 with grease 2 External surface for bearing cap Thin fi lm 3 Grease reservoir for bearing Fill 2/3 with grease See chapter 5.2.2 "Thin grease fi lm" See chapter 5.2.3 "Grease reservoir" Festo 7DZF / DZHb_en 15 / 24...
19 Nm DZF-63-…-A-P-A-S20 19 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. 16 / 24 Festo 7DZF / DZHb_en...
Pull the piston rod out of the cylinder barrel. • Check the cylinder barrel and piston rod for damage. The entire cylinder must be replaced if the cylinder barrel (particularly the bearing surface) is showing signifi cant damage. Festo 7DZF / DZHb_en 17 / 24...
Pull the piston rod back again until the piston is sitting fully in the cylinder barrel. Note This approach ensures that the lips of the two groove rings sit correctly in the cylinder barrel. 18 / 24 Festo 7DZF / DZHb_en...
Unscrew the regulating screw 2 fully. – Remove the O-ring 3 from the regulating screw 2. – Clean the thread and hole 4 of the end-position cushioning in the bearing cap and end cap. Festo 7DZF / DZHb_en 19 / 24...
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Apply a thin fi lm of grease to the new cushioning seals 2 on the front side with the sealing surface and insert them into the bearing cap 1 and end cap (the rear bearing cap on cylinders with through piston rod (S2 / S20)). 20 / 24 Festo 7DZF / DZHb_en...
15 Nm DZH-63 15 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. Festo 7DZF / DZHb_en 21 / 24...
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.
(7Accessories_a_en). 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 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 7DZF / DZHb_en 23 / 24...
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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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