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Festo 7DZF / DZHb_en

4.4.6 

Attaching the bearing and end caps

• 

To protect the bearing and seals, place the appropriate mounting sleeve 
(see chapter 

7.2 "Special tools"

) on the thread of the piston rod to prevent 

damage.

• 

Guide the bearing cap (both bearing caps on cylinders with through piston 
rod (S2 / S20)) over the mounting sleeve onto the piston rod as far as the 
cylinder barrel.

• 

Place the end cap at the other end of the cylinder barrel.

• 

Apply the screw locking agent included in the set of wearing parts to the 
screws.

• 

Turn the screws through the bearing and end caps (through both bearing 
caps on cylinders with through piston rod (S2/S20)) into the cylinder barrel.

•  Align the bearing and end caps fl ush with the cylinder barrel.
• 

Tighten the screws using the appropriate torque (see table).

Type

Torque

DZH-16

3 Nm

DZH-20

3 Nm

DZH-25

6 Nm

DZH-32

11 Nm

DZH-40

11 Nm

DZH-50

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.

Summary of Contents for DZF

Page 1: ...Repair instructions en Cylinder with piston rod Flat cylinder DZF DZH 7DZF DZHb_en...

Page 2: ...oduction distribution or sale of this document or communication of its contents to others without express authorisation is prohibited Offenders will be liable for damages All rights reserved in the ev...

Page 3: ...viations 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 co...

Page 4: ...emoving the bearing and end caps 13 4 3 3 Replacing the piston components 13 4 3 4 Inserting the piston rod into the cylinder barrel 14 4 3 5 Repairing the bearing and end caps 15 4 3 6 Attaching the...

Page 5: ...tallation commissioning maintenance and care etc 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...

Page 6: ...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 pr...

Page 7: ...plate provides the following information DZF Cylinder of the type DZF double acting 32 Piston diameter 32 mm 100 Stroke 100 mm A Male piston rod thread P Elastic cushioning rings pads at both ends A...

Page 8: ...3 5 6 7 8 9 10 15 16 17 11 1 12 13 14 19 18 6 5 7 6 3 2 1 5 4 4 4 8 This diagram is intended only to provide an overview of the individual components To order spare and wearing parts please use the on...

Page 9: ...thread 11 Piston rod with male thread hollow S20 only 12 Piston 13 Washer Not S2 not S20 14 Hex nut Not S2 not S20 15 Piston rod with male thread S2 only use screw locking agent 16 Piston rod with fe...

Page 10: ...ovide 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 2 1 3 2 1 3 6 25 24 8 7 6 6 4 4 9...

Page 11: ...25 PPV A S6 12 Piston rod with male thread 13 Hollow piston rod with male thread Only with DZH S20 14 Groove ring 15 Piston 16 Guiding band 17 Threaded coupling 18 Piston rod extension Only with DZH...

Page 12: ...ed when the cylinder is opened To prevent damage to sealing rims or guide surfaces do not use pointed or sharp edged assembly aids 4 2 Visual inspection Check the cylinder for visible damage that migh...

Page 13: ...rel 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 significant damage Unscrew the hex nut t...

Page 14: ...m 40 Nm 20 Nm 4 3 4 Inserting the piston rod into the cylinder barrel Clean the inside surface of the cylinder barrel as described in chapter 5 1 Cleaning Apply the grease included in the set of weari...

Page 15: ...nt and rear bearing caps on cylinders with through piston rod S2 S20 1 3 2 Warning Check the plain bearing in the bearing cap the front and rear bearing caps on cylinders with through piston rod S2 S2...

Page 16: ...thread of the piston rod to prevent damage Guide the bearing cap both bearing caps on cylinders with through piston rod S2 S20 over the mounting sleeve onto the piston rod as far as the cylinder barre...

Page 17: ...ring 3 Cushioning seal 4 Piston rod seal 5 Bearing 4 4 2 Removing the bearing and end caps Loosen the screws in the bearing and end caps the rear bearing cap on cylinders with through piston rod S2 S2...

Page 18: ...boss Thin film1 on outside 1 See chapter 5 2 2 Thin grease film 2 See chapter 5 2 3 Grease reservoir Place the piston flat against the front side of the cylinder barrel and insert the piston seal int...

Page 19: ...ck the plain bearing in the bearing cap the front and rear bearing caps on cylinders with through piston rod S2 S20 for visible damage that might impair its function such as deposits and scoring The e...

Page 20: ...reservoir2 for piston rod Fill 2 3 with grease 2 External surface for bearing cap Thin film1 3 Grease reservoir2 for bearing Fill 2 3 with grease 1 See chapter 5 2 2 Thin grease film 2 See chapter 5...

Page 21: ...rrel Apply the screw locking agent included in the set of wearing parts to the screws Turn the screws through the bearing and end caps through both bearing caps on cylinders with through piston rod S2...

Page 22: ...inder barrel to produce an even lubricant film 5 2 1 Extremely thin grease film A barely continuous film of grease covers the bearing surface The grease can give a sheen to the surface however the col...

Page 23: ...piston rod The mounting sleeve for piston rods for protecting the piston rod seal and the bearing in the bearing cap while the repair is being carried out must be produced by the customer The schemati...

Page 24: ...g further developed with regard to hardware and software The hardware status and where applicable the software status of the product can be found on the type plate of the product If the electronic doc...

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