SCHUNK SRH User instructions

Assembly and Operating Manual
Pneumatic Swivel Head type SRH
1 Date printed 30.09.11
Dear Customer,
Congratulations on choosing a SCHUNK product. By choosing SCHUNK, you have opted for
the highest precision, top quality and best service.
You are going to increase the process reliability of your production and achieve best
machining results –to the customer's complete satisfaction.
SCHUNK products are inspiring.
Our detailed assembly and operation manual will support you.
Do you have further questions? You may contact us at any time –even after purchase. You can
reach us directly at the mentioned addresses in the last chapter of these instructions.
Kindest Regards,
Your SCHUNK GmbH & Co. KG
Precision Workholding Systems
Bahnhofstr. 106 - 134
D-74348 Lauffen/ Neckar
Tel. [phone]
Fax [phone]
[email protected]
www.schunk.com
Document last updated: 20.06.2011
Edition: 01-A
PNEUMATIC
SWIVEL HEAD
TYPE SRH

Assembly and Operating Manual
Pneumatic Swivel Head type SRH
2 Date printed 30.09.11
Contents
1SAFETY.................................................................................................................................................4
1.1 SYMBOL KEY....................................................................................................................................4
1.2 APPROPRIATE USE...........................................................................................................................4
1.3 ENVIRONMENTAL AND OPERATING CONDITIONS .................................................................................4
1.4 SAFETY NOTES ................................................................................................................................5
2WARRANTY..........................................................................................................................................6
3SCOPE OF DELIVERY.........................................................................................................................6
4TECHNICAL DATA...............................................................................................................................6
5ASSEMBLY AND INSTALLATION.......................................................................................................7
5.1 ASSEMBLY.......................................................................................................................................7
5.2 AIR CONNECTION/MEDIA CONNECTION...............................................................................................7
5.3 ADJUSTING THE END POSITIONS........................................................................................................8
5.4 FINE ADJUSTMENT OF SHOCK ABSORBER TRAVEL..............................................................................9
5.5 ASSEMBLING AND SETTING THE PROXIMITY SWITCHES .......................................................................9
5.5.1 MMS 22 magnetic switches (see data sheet)........................................................................9
5.5.2 Inductive proximity switches with M8 external thread..........................................................10
5.6 CABLE ASSIGNMENT.......................................................................................................................11
5.7 EDF PIN ASSIGNMENT FOR SRH ....................................................................................................11
6FUNCTION AND HANDLING .............................................................................................................12
7MAINTENANCE AND CARE...............................................................................................................12
7.1 SERVICING INTERVALS ...................................................................................................................12
7.2 NOTES ..........................................................................................................................................12
7.1 DISASSEMBLING THE ROTARY ACTUATOR........................................................................................13
7.2 REPLACING A SHOCK ABSORBER.....................................................................................................13
7.3 SHOCK ABSORBER USE AND INSTALLATION DIMENSIONS ..................................................................14
7.4 MEASURING INSTRUCTIONS............................................................................................................14
8ASSEMBLY DRAWINGS....................................................................................................................15
8.1 SRU ASSEMBLY DRAWINGS............................................................................................................15
8.2 SRH ASSEMBLY DRAWINGS............................................................................................................17
8.2.1 Exploded view for SRH 20-35..............................................................................................17
8.2.2 Exploded view for SRH 40-60..............................................................................................18
9BILLS OF MATERIALS ......................................................................................................................19
9.1 BILLS OF MATERIALS FOR SRH20...................................................................................................19
9.1.1 SRU bill of materials for SRH20...........................................................................................19
9.1.2 EDF bill of materials for SRH20...........................................................................................20
9.1.3 Bill of materials for SRH20...................................................................................................20
9.2 BILLS OF MATERIALS FOR SRH25...................................................................................................21
9.3 BILLS OF MATERIALS FOR SRH35...................................................................................................23
9.3.2 EDF bill of materials for SRH35...........................................................................................24
9.3.3 Bill of materials for SRH35...................................................................................................24
9.4 BILLS OF MATERIALS FOR SRH40...................................................................................................25
9.4.1 SRU bill of materials for SRH40...........................................................................................25
9.4.2 EDF bill of materials for SRH40...........................................................................................26
9.4.3 Bill of materials for SRH40...................................................................................................26
9.5 BILLS OF MATERIALS FOR SRH50...................................................................................................27
9.5.1 SRU bill of materials for SRH50...........................................................................................27

Assembly and Operating Manual
Pneumatic Swivel Head type SRH
3 Date printed 30.09.11
9.5.2 EDF bill of materials for SRH50...........................................................................................28
9.6 BILLS OF MATERIALS FOR SRH60...................................................................................................29
9.6.1 SRU bill of materials for SRH60...........................................................................................29
9.6.2 EDF bill of materials for SRH60...........................................................................................30
9.6.3 Bill of materials for SRH60...................................................................................................30
10 TRANSLATION OF ORIGINAL EC DECLARATION OF INCORPORATION....................................31

Assembly and Operating Manual
Pneumatic Swivel Head type SRH
4 Date printed 30.09.11
1 Safety
1.1 Symbol key
You will find this symbol wherever hazards for persons or damage to the product
are possible.
This symbol indicates important information on the product or its handling.
1.2 Appropriate use
The unit is intended for installation / mounting for machinery and equipment. The requirements
of the applicable directives must be observed and complied with.
The unit may only ever be employed within the restrictions of its technical specifications.
Using the system with disregard to even a minor specification will be deemed inappropriate use.
The manufacturer assumes no liability for any injury or damage resulting from inappropriate
use.
1.3 Environmental and operating conditions
- Use the unit only within the application parameters defined in the Technical Catalog.
The most recent version applies (according to the General Terms and Conditions).
Please make sure that your application has been checked based on the current
SCHUNK calculation program. If this is not the case, we can provide no warranty.
- Standard for quality of the compressed air according to ISO 8573-1: 6 4 4
- Clean ambient conditions at room temperature are required. If these conditions are
not ensured, the maintenance interval will be shorter, depending on the actual utiliza-
tion.
- The environment must be free of splashing water and vapors, and also of abrasive
dust and process dust. This does not apply to units designed especially for dirty envi-
ronments.

Assembly and Operating Manual
Pneumatic Swivel Head type SRH
5 Date printed 30.09.11
1.4 Safety notes
There are potential risks associated with the unit, for example if:
- the unit is improperly used, installed or serviced.
- the unit is used other than for the intended purpose.
- the EC Machine Directive, the accident prevention regulations, the VDE
guidelines or the safety and installation instructions are not observed.
All personnel who are responsible for installation, commissioning and servicing must
have read and understood the entire operating manual, in particular the chapter on
»Safety«. It is recommended to have this confirmed in writing.
Installation and dismantling, mounting of the proximity switches, connections and
commissioning may be carried out only by authorized personnel.
Work procedures that impair the correct functioning and operational safety of the
product are prohibited.
Do not move any parts by hand when the unit is connected to the power supply.
Do not reach into the open mechanical parts and the area of motion of the rotary unit.
The power supply cables must be removed for assembly, modification, maintenance
and adjustment of the unit.
Carry out all maintenance, modifications or attachments outside of the danger zone.
During installation, connection, adjusting, commissioning and testing, measures must
be taken to prevent the risk of inadvertent activation of the unit by the fitter or other
persons.
Protective covers must be provided for the use of all handling modules in accordance
with EC Machine Directive, Section 1.4.
There is a danger due to falling or ejected objects. Preventive measures must be
taken to prevent the falling or ejection of potentially dangerous objects (machined
workpieces, tools, chips, debris, waste, etc.).
Additional bore holes, threads or attachments not offered by SCHUNK as accessories
may be mounted only after obtaining the approval of SCHUNK.
Rotary units with internal springs can have parts that are under spring tension.
Therefore, special care is necessary when dismantling such a unit.
In the event of emergency shut-down the rotary unit can still move due to a drop in
pressure. If such movement is not desired, the position of the unit in the event of
emergency shut-down can be secured in any end position with the use of SCHUNK
SDV-P valves.
In addition, the applicable safety regulations and accident prevention regulations must
be observed.

Assembly and Operating Manual
Pneumatic Swivel Head type SRH
6 Date printed 30.09.11
2 Warranty
The warranty period is 24 months from the date of delivery when utilized as intended in
compliance with the specified maintenance and lubrication intervals and the defined
environmental and operating conditions (see chapter 1.3).
Parts that come into contact with the workpiece and wearing parts are not covered by the war-
ranty. Wearing parts are designated accordingly in the replacement parts lists (see chapter 9).
See also our General Terms and Conditions in this regard. .
The unit is considered defective when the basic rotary function is inoperable.
3 Scope of delivery
The scope of delivery comprises:
-Pneumatic swivel head SRH, depending on the version ordered
4 Technical data
Please refer to our current catalog for the technical data.
Please check whether the suitability of your individual application has been verified
using the rotary actuator calculation program (SSE). If this is not the case, we re-
serve the right to refuse warranty claims. (The calculation program is available free of
charge at: www.schunk.com >Service >Downloads).
The airborne sound emitted from the unit is <= 70dB(A)

Assembly and Operating Manual
Pneumatic Swivel Head type SRH
7 Date printed 30.09.11
5 Assembly and installation
5.1 Assembly
For connection dimensions, please refer to the corresponding drawings in the latest catalog or
our CAD data service on the Internet (link at www.schunk.com).
DANGER!
The air supply must be switched off during assembly. Please also observe the
safety notes in chapter 1.3.
5.2 Air connection/media connection
Pressure medium: compressed air.
Standard for quality of the compressed air according to ISO 8573-1: 6 4 4
- Open only the required connections and close off those that are not required with dummy
stoppers.
- O-rings (item 84) have been included in the enclosed pack for hose-free direct connection,
see catalog for item numbers.
The threads marked A and B are available for the air connection for the basic unit.

Assembly and Operating Manual
Pneumatic Swivel Head type SRH
8 Date printed 30.09.11
5.3 Adjusting the end positions
Figure - Adjusting the end positions
1. Loosen the screw (item 35) by approx. 1 turn using a hexagon socket screw
(SRU 20 –40: 4, SRU 50 –60: 5).
2. Apply pressure to air connection B. The unit swivels to stop A (basic position 0°).
3. Set the required end position by turning stop A (near the two main air connections).
Do not adjust the end stops by turning in the axial, front hexagon socket. This could
result in the individual components becoming detached from one another. Use a face pin,
wrench which you position on the axial bores in the stop cover.
4. Purge air connection B and apply pressure to air connection A. The unit swivels to stop B
(basic position 180°).
5. Set the required end position by turning stop B (near the domed side of the SRU).
(see above point 3.)
6. Tighten the screw (item 35) (SRU 20 –40:10 Nm, SRU 50 –60: 24 Nm).
7. Check that the end positions have been set correctly by swiveling the unit several times.
Warning!
The limit sleeves (item 7, 10 or 25, depending on the SRU version) limit the adjust-
ment range of the stops. For safety reasons, the unit must only be operated when the
limit sleeves are installed.



Assembly and Operating Manual
Pneumatic Swivel Head type SRH
9 Date printed 30.09.11
5.4 Fine adjustment of shock absorber travel
Figure Fine adjustment of shock absorber travel
1. To adjust the cushioning in the end position, loosen the nut (item 101) at stop A/ B using an
open-end wrench while bracing the striker pin (item 79/ 89) with a hexagon socket wrench.
2. Unscrewing the striker pin shortens the shock absorber travel by 1.5 mm per revolution.
3. Swivel the loaded unit to check the cushioning effect.
The end positions must be arrived at gently.
4. Retighten the nuts (items 101a / b).
Notice!
The maximum adjustment range of the shock absorbers is 1.5 mm for SRH20+25,
0.5 mm for SRH 35 and 3 mm for SRH40-60.
Beyond this range, leakage commences in order to protect the unit.
5.5 Assembling and setting the proximity switches
5.5.1 MMS 22 magnetic switches (see data sheet)
Four grooves have been incorporated in the housing for installing the magnetic switches. Pro-
ceed as follows to set a switching position:
1. Insert the magnetic switch into the groove.
2. Move it along the groove until the switch actuates.
3. Fix the magnetic switch in place in accordance with the supplied data sheet.
4. Check that the setting is correct by swiveling the unit several times.

Assembly and Operating Manual
Pneumatic Swivel Head type SRH
10 Date printed 30.09.11
5.5.2 Inductive proximity switches with M8 external thread
(e.g. SCHUNK IN 80)
1. Fasten the retaining plate (item 99) onto the SRU housing with the aid of the screws
(item 235).
2. Screw the bracket (item 236) onto the retaining plate (item 99) using the screws (item 232).
3. Insert the proximity switch (not included in the mounting kit) into the brackets (item 236) as
far as the stop. Clamp in this position using the screw (item 231).
4. Fit the screw (item 234) to the distributor plate (item 73) and secure with the lock nut
(item 233).
5. Adjust one bracket (item 236) so that the sensor responds. In order to do this, the screws
(item 231) must be loosened slightly. Retighten the screws (item 231) when adjustment is
complete.
6. Swivel the unit 180°
7. Adjust the second bracket (item 236) so that the sensor responds. In order to do this,
the screws (item 231) must be loosened slightly. Retighten the screws (item 231) when
adjustment is complete.
8. Check that the setting is correct by swiveling the unit several times.
Figure - Fitting inductive proximity switches