SCHUNK SRU-plus-63 Installation and operating instructions

Translation of the original manual
Assembly and operation manual
SRU-plus-63
Pneumatic Swivel Unit

Imprint
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03.00 | SRU-plus-63 | Assembly and operation manual | en | 389445
Imprint
Copyright:
This manual is protected by copyright. The author is SCHUNK GmbH & Co. KG. All rights
reserved. Any reproduction, processing, distribution (making available to third parties),
translation or other usage - even excerpts - of the manual is especially prohibited and
requires our written approval.
Technical changes:
We reserve the right to make alterations for the purpose of technical improvement.
Document number: 389445
Version: 03.00|19/07/2019|en
© SCHUNK GmbH & Co. KG
All rights reserved.
Dear Customer,
thank you for trusting our products and our family-owned company, the leading
technology supplier of robots and production machines.
Our team is always available to answer any questions on this product and other solutions.
Ask us questions and challenge us. We will find a solution!
Best regards,
Your SCHUNK team
SCHUNK GmbH & Co. KG
Spann- und Greiftechnik
Bahnhofstr. 106 – 134
D-74348 Lauffen/Neckar
Tel. [phone]
Fax [phone]
[email protected]
schunk.com

Table of Contents
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Table of Contents
1 General.................................................................................................................... 5
1.1 About this manual ................................................................................................ 5
1.1.1 Presentation of Warning Labels ...............................................................5
1.1.2 Applicable documents ..............................................................................5
1.1.3 Sizes ..........................................................................................................6
1.1.4 Variants.....................................................................................................6
1.2 Warranty .............................................................................................................. 6
1.3 Scope of delivery .................................................................................................. 6
1.4 Accessories ........................................................................................................... 6
2 Basic safety notes ................................................................................................... 7
2.1 Intended use......................................................................................................... 7
2.2 Not intended use.................................................................................................. 7
2.3 Constructional changes ........................................................................................ 7
2.4 Ambient conditions and operating conditions .....................................................7
2.5 Spare parts ........................................................................................................... 8
2.6 Personnel qualification......................................................................................... 8
2.7 Personal protective equipment............................................................................ 8
2.8 Notes on safe operation ....................................................................................... 9
2.9 Transport .............................................................................................................. 9
2.10 Malfunctions......................................................................................................... 9
2.11 Disposal .............................................................................................................. 10
2.12 Fundamental dangers......................................................................................... 10
2.12.1 Protection during handling and assembly ..............................................10
2.12.2 Protection during commissioning and operation ...................................10
2.12.3 Protection against dangerous movements.............................................11
2.12.4 Protection against electric shock............................................................11
2.13 Notes on particular risks..................................................................................... 12
3 Technical data.........................................................................................................14
3.1 Type key.............................................................................................................. 14
3.2 Basic data ........................................................................................................... 14
4 Design and description............................................................................................15
4.1 Structure............................................................................................................. 15
4.2 Description ......................................................................................................... 15
5 Assembly ................................................................................................................16
5.1 Installing and connecting.................................................................................... 16
5.2 Connections........................................................................................................ 17
5.2.1 Mechanical connection...........................................................................17
5.2.2 Pneumatic connection............................................................................19
5.3 Settings............................................................................................................... 20

Table of Contents
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5.3.1 Adjusting the angle of rotation...............................................................22
5.3.2 Adjusting the swiveling speed ................................................................23
5.3.3 Adjusting absorber stroke ......................................................................24
5.4 Mounting the sensor .......................................................................................... 25
5.4.1 Overview of sensors ...............................................................................26
5.4.2 Mounting MMS 30 magnetic switch.......................................................26
5.4.3 Mounting inductive proximity switch IN 80 ...........................................27
6 Start-up ..................................................................................................................29
7 Troubleshooting .....................................................................................................30
7.1 Product does not move smoothly to the end positions .....................................30
7.2 Product does not travel through the rotating angle ..........................................30
7.3 Product rotates jerkily ........................................................................................ 30
7.4 Product does not move ...................................................................................... 31
7.5 Torque is diminishing ......................................................................................... 31
8 Maintenance ..........................................................................................................32
8.1 Maintenance interval ......................................................................................... 32
8.2 Lubricants/Lubrication points (basic lubrication) ............................................... 32
8.3 Inspect shock absorbers ..................................................................................... 33
8.4 Replacing the shock absorber............................................................................. 33
8.5 Dismantling and assembling the swivel unit ...................................................... 35
8.6 Assembly drawing............................................................................................... 36
9 Translation of original declaration of incorporation ................................................37
9.1 Annex to Declaration of Incorporation............................................................... 38

General
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1 General
1.1 About this manual
This manual contains important information for a safe and
appropriate use of the product.
This manual is an integral part of the product and must be kept
accessible for the personnel at all times.
Before starting work, the personnel must have read and
understood this operating manual. Prerequisite for safe working is
the observance of all safety instructions in this manual.
Illustrations in this manual are provided for basic understanding
and may differ from the actual product design.
In addition to these instructions, the documents listed under
Applicable documents [}5] are applicable.
1.1.1 Presentation of Warning Labels
To make risks clear, the following signal words and symbols are
used for safety notes.
DANGER
Danger for persons!
Non-observance will inevitably cause irreversible injury or death.
WARNING
Dangers for persons!
Non-observance can lead to irreversible injury and even death.
CAUTION
Dangers for persons!
Non-observance can cause minor injuries.
CAUTION
Material damage!
Information about avoiding material damage.
1.1.2 Applicable documents
• General terms of business *
• Catalog data sheet of the purchased product *
The documents marked with an asterisk (*) can be downloaded on
our homepage schunk.com

General
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1.1.3 Sizes
This operating manual applies to the following sizes:
• SRU-plus 63
1.1.4 Variants
This operating manual applies to the following variations:
• SRU-plus 63 Angle of rotation 90° left
• SRU-plus 63 Angle of rotation 90° right
• SRU-plus 63 Angle of rotation 180°
1.2 Warranty
If the product is used as intended, the warranty is valid for 24
months from the ex-works delivery date under the following
conditions:
• Observe the specified maintenance and lubrication intervals
• Observe the ambient conditions and operating conditions
Parts touching the workpiece and wear parts are not included in
the warranty.
1.3 Scope of delivery
The scope of delivery includes
• Pneumatic swivel unit SRU-plus 63 in the version ordered
• Accessory pack
– ID: 5511038
1.4 Accessories
• Sealing kit
– ID: 0370702
A wide range of accessories are available for this product
For information regarding which accessory articles can be used
with the corresponding product variants, see catalog data sheet.

Basic safety notes
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2 Basic safety notes
2.1 Intended use
The product may only be used for swiveling permissible
attachment parts or workpieces.
• The product may only be used within the scope of its technical
data, Technical data [}14].
• When implementing and operating components in safety-
related parts of the control systems, the basic safety principles
in accordance with DIN EN ISO 13849-2 apply. The proven safety
principles in accordance with DIN EN ISO 13849-2 also apply to
categories 1, 2, 3 and 4.
• The product is intended for installation in a machine/system.
The applicable guidelines must be observed and complied with.
• The product is intended for industrial and industry-oriented use.
• Appropriate use of the product includes compliance with all
instructions in this manual.
2.2 Not intended use
It is not intended use if the product is used, for example, as a
pressing tool, stamping tool, lifting gear, guide for tools, cutting
tool, clamping device or a drilling tool.
• Any utilization that exceeds or differs from the appropriate use
is regarded as misuse.
2.3 Constructional changes
Implementation of structural changes
By conversions, changes, and reworking, e.g. additional threads,
holes, or safety devices can impair the functioning or safety of the
product or damage it.
• Structural changes should only be made with the written
approval of SCHUNK.
2.4 Ambient conditions and operating conditions
Required ambient conditions and operating conditions
Incorrect ambient and operating conditions can make the product
unsafe, leading to the risk of serious injuries, considerable material
damage and/or a significant reduction to the product's life span.
• Make sure that the product is used only in the context of its
defined application parameters, Technical data [}14].
• Make sure that the product is a sufficient size for the
application.
• Make sure that the environment is free from splash water and
vapors as well as from abrasion or processing dust. Exceptions
are products that are designed especially for contaminated
environments.

Basic safety notes
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2.5 Spare parts
Use of unauthorized spare parts
Using unauthorized spare parts can endanger personnel and
damage the product or cause it to malfunction.
• Use only original spare parts or spares authorized by SCHUNK.
2.6 Personnel qualification
Inadequate qualifications of the personnel
If the personnel working with the product is not sufficiently qualified,
the result may be serious injuries and significant property damage.
• All work may only be performed by qualified personnel.
• Before working with the product, the personnel must have read
and understood the complete assembly and operating manual.
• Observe the national safety regulations and rules and general
safety instructions.
The following personal qualifications are necessary for the various
activities related to the product:
Trained electrician Due to their technical training, knowledge and experience, trained
electricians are able to work on electrical systems, recognize and avoid
possible dangers and know the relevant standards and regulations.
Qualified personnel Due to its technical training, knowledge and experience, qualified
personnel is able to perform the delegated tasks, recognize and avoid
possible dangers and knows the relevant standards and regulations.
Instructed person Instructed persons were instructed by the operator about the
delegated tasks and possible dangers due to improper behaviour.
Service personnel of
the manufacturer
Due to its technical training, knowledge and experience, service
personnel of the manufacturer is able to perform the delegated
tasks and to recognize and avoid possible dangers.
2.7 Personal protective equipment
Use of personal protective equipment
Personal protective equipment serves to protect staff against
danger which may interfere with their health or safety at work.
• When working on and with the product, observe the
occupational health and safety regulations and wear the
required personal protective equipment.
• Observe the valid safety and accident prevention regulations.
• Wear protective gloves to guard against sharp edges and
corners or rough surfaces.
• Wear heat-resistant protective gloves when handling hot surfaces.
• Wear protective gloves and safety goggles when handling
hazardous substances.
• Wear close-fitting protective clothing and also wear long hair in
a hairnet when dealing with moving components.

Basic safety notes
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2.8 Notes on safe operation
Incorrect handling of the personnel
Incorrect handling and assembly may impair the product's safety
and cause serious injuries and considerable material damage.
• Avoid any manner of working that may interfere with the
function and operational safety of the product.
• Use the product as intended.
• Observe the safety notes and assembly instructions.
• Do not expose the product to any corrosive media. This does
not apply to products that are designed for special
environments.
• Eliminate any malfunction immediately.
• Observe the care and maintenance instructions.
• Observe the current safety, accident prevention and
environmental protection regulations regarding the product's
application field.
2.9 Transport
Handling during transport
Incorrect handling during transport may impair the product's
safety and cause serious injuries and considerable material
damage.
• When handling heavy weights, use lifting equipment to lift the
product and transport it by appropriate means.
• Secure the product against falling during transportation and
handling.
• Stand clear of suspended loads.
2.10 Malfunctions
Behavior in case of malfunctions
• Immediately remove the product from operation and report the
malfunction to the responsible departments/persons.
• Order appropriately trained personnel to rectify the
malfunction.
• Do not recommission the product until the malfunction has
been rectified.
• Test the product after a malfunction to establish whether it still
functions properly and no increased risks have arisen.

Basic safety notes
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2.11 Disposal
Handling of disposal
The incorrect handling of disposal may impair the product's safety
and cause serious injuries as well as considerable material and
environmental harm.
• Follow local regulations on dispatching product components for
recycling or proper disposal.
2.12 Fundamental dangers
General
• Observe safety distances.
• Never deactivate safety devices.
• Before commissioning the product, take appropriate protective
measures to secure the danger zone.
• Disconnect power sources before installation, modification,
maintenance, or calibration. Ensure that no residual energy
remains in the system.
• If the energy supply is connected, do not move any parts by hand.
• Do not reach into the open mechanism or movement area of
the product during operation.
2.12.1 Protection during handling and assembly
Incorrect handling and assembly
Incorrect handling and assembly may impair the product's safety
and cause serious injuries and considerable material damage.
• Have all work carried out by appropriately qualified personnel.
• For all work, secure the product against accidental operation.
• Observe the relevant accident prevention rules.
• Use suitable assembly and transport equipment and take
precautions to prevent jamming and crushing.
Incorrect lifting of loads
Falling loads may cause serious injuries and even death.
• Stand clear of suspended loads and do not step into their
swiveling range.
• Never move loads without supervision.
• Do not leave suspended loads unattended.
2.12.2 Protection during commissioning and operation
Falling or violently ejected components
Falling and violently ejected components can cause serious injuries
and even death.
• Take appropriate protective measures to secure the danger
zone.
• Never step into the danger zone during operation.

Basic safety notes
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2.12.3 Protection against dangerous movements
Unexpected movements
Residual energy in the system may cause serious injuries while
working with the product.
• Switch off the energy supply, ensure that no residual energy
remains and secure against inadvertent reactivation.
• Never rely solely on the response of the monitoring function to
avert danger. Until the installed monitors become effective, it
must be assumed that the drive movement is faulty, with its
action being dependent on the control unit and the current
operating condition of the drive. Perform maintenance work,
modifications, and attachments outside the danger zone
defined by the movement range.
• To avoid accidents and/or material damage, human access to
the movement range of the machine must be restricted. Limit/
prevent accidental access for people in this area due through
technical safety measures. The protective cover and protective
fence must be rigid enough to withstand the maximum possible
movement energy. EMERGENCY STOP switches must be easily
and quickly accessible. Before starting up the machine or
automated system, check that the EMERGENCY STOP system is
working. Prevent operation of the machine if this protective
equipment does not function correctly.
2.12.4 Protection against electric shock
Possible electrostatic energy
Components or assembly groups may become electrostatically
charged. When the electrostatic charge is touched, the discharge
may trigger a shock reaction leading to injuries.
• The operator must ensure that all components and assembly
groups are included in the local potential equalisation in
accordance with the applicable regulations.
• While paying attention to the actual conditions of the working
environment, the potential equalisation must be implemented
by a specialist electrician according to the applicable
regulations.
• The effectiveness of the potential equalisation must be verified
by executing regular safety measurements.

Basic safety notes
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2.13 Notes on particular risks
DANGER
Risk of fatal injury from suspended loads!
Falling loads can cause serious injuries and even death.
•Stand clear of suspended loads and do not step within their
swiveling range.
•Never move loads without supervision.
•Do not leave suspended loads unattended.
•Wear suitable protective equipment.
WARNING
Risk of injury from objects falling and being ejected!
Falling and ejected objects during operation can lead to serious
injury or death.
•Take appropriate protective measures to secure the danger
zone.
WARNING
Risk of injury due to unexpected movements!
If the power supply is switched on or residual energy remains in
the system, components can move unexpectedly and cause
serious injuries.
•Before starting any work on the product: Switch off the power
supply and secure against restarting.
•Make sure, that no residual energy remains in the system.
WARNING
Risk of injury from sharp edges and corners!
Sharp edges and corners can cause cuts.
•Use suitable protective equipment.
WARNING
Risk of burns through contact with hot surfaces!
The product can heat up considerably during operation. Touching
hot surfaces can cause burns.
•Do not touch hot surfaces.
•Let them cool down before working on the product.
•Wear appropriate safety equipment.

Basic safety notes
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WARNING
Risk of injury from parts coming loose!
If the shock absorbers are faulty, the product can become
damaged. Parts coming loose in this way can lead to injuries.
•Regularly check the components for wear and damage.
WARNING
Risk of injury if the condition or behavior of the product is
undefined!
Cutting off the compressed air supply in an uncontrolled manner
could lead to undefined states and behavior. This may cause
personal injury or material damage.
•The operator must define suitable emergency stop and
restarting strategies.
✓Emergency stop strategies: e.g. by means of controlled shut
down
✓Restarting strategies: e.g. using pressure build-up valves or
suitable valve switching sequences

Technical data
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3 Technical data
3.1 Type key
SRU-plus 63 - W - 90 - 3 - 8 - L
Size
63
Dampening
W = Soft
Angle of rotation
90° 180°
End position adjustability
±3°
Fluid feed-through
8
Swivel direction
L = left R = right
Type key
3.2 Basic data
Designation Value
Noise emission [dB(A)] ≤70
Pressure medium Compressed air, compressed air
quality according to
ISO 8573-1:7 4 4
Min. pressure [bar] 4.5
Max. pressure [bar] 8
The catalog data sheet contains diagrams for designing the
maximum permissible mass moment of inertia.
The SCHUNK contact person provides support for designing further
applications.
More technical data is included in the catalog data sheet.
Whichever is the latest version.

Design and description
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4 Design and description
4.1 Structure
1 Throttle valve 3 Housing
2 Pinion 4 Shock absorber
4.2 Description
The product is a pneumatic rotary actuator for rotating and
swiveling movements.

Assembly
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5 Assembly
5.1 Installing and connecting
CAUTION
Risk of damage to the product!
If the end position is approached too hard, the product may be damaged.
•As a rule, a rotary movement must take place without impact
and bouncing.
•To do this, carry out sufficient throttle and dampening.
•Observe specifications in the catalog data sheet.
CAUTION
Risk of damage to the product!
If during first actuation the exhaust throttle valves are open, the
product may move in an uncontrolled manner.
•Before actuation, check that the exhaust throttle valves are
closed and if necessary close any open ones completely.
ØScrew on the swivel unit, Mechanical connection [}17].
✓Use centering sleeves.
✓Observe the tightening torque for the mounting screws, see
tightening torques table.
NOTE
If the supplied fitting screws are not used, use screws and
centering sleeves.
ØScrew assembly onto the pinion using two fitting screws and
two mounting screws, Mechanical connection [}17].
ØIn air connections "A" and "B", screw in exhaust air throttle valves
and connect compressed air lines.
Or with hose-free direct connection:
Screw locking screws into swivel unit air connections "A" and "B",
Pneumatic connection [}19].
Install the exhaust air throttle valve upstream of the air
connections "A" and "B" of the direct connection.
ØScrew in locking screws in open and not required air
connections where appropriate.
ØActuate air connection "A" or "B".
ØOpen both exhaust air throttle valves until the pinion starts to
move, approx. half a turn.
ØAdjust angle of rotation, Adjusting the angle of rotation [}22].
ØAdjust swiveling speed, Adjusting the swiveling speed [}23].
ØAdjust absorber stroke, Adjusting absorber stroke [}24].
ØMount sensor if necessary, Mounting the sensor [}25].

Assembly
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5.2 Connections
5.2.1 Mechanical connection
Connections on the
housing
The product can be assembled from three sides.
• On the side of the apparatus via threaded holes
• On the attachment part side via through-bores
• On the side via threaded holes
Centering sleeves for the mounting screws are included in the
accessory pack.
Assembly interface
1 Through-bore
Assembly on attachment
part side
3 Thread mounting at side
2 Thread mounting on
apparatus side
Item Mounting SRU-plus 63
assembly on attachment part side
1 Screw M14
Centering sleeve Ø 22
assembly on apparatus side
2 Screw M16
Max. depth of engagement from locating
surface [mm]
Centering sleeve Ø 22
assembly at side
3 Screw M12
Max. depth of engagement from locating
surface [mm]
Centering sleeve Ø 16

Assembly
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Tightening torque [Nm]
Thread Strength class
8.8 10.9 12.9
M12 85 120 150
M14 130 200 230
M16 210 310 360
Connections on
pinion
Attachment part mounting interface
Fitting screws (1) and mounting screws (2) are included in the
accessory kit. If the fitting screws from the accessory kit are not
used, additional centering sleeves must be used with the screws.
Designation SRU-plus 63 63
Fitting screw M10
Screw M10

Assembly
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5.2.2 Pneumatic connection
NOTE
Observe the requirements for the compressed air supply,
Technical data [}14].
Air connection
1 Air connection "B" 4 Air connection "B",
apparatus-side direct
connection
2 Air connection "A", direct
connection at side
5 Air connection "A",
apparatus-side direct
connection
3 Air connection "B", direct
connection at side
6 Air connection "A"
• Only open the air connections required.
• Seal those main air connections that are not needed using the
locking screws from the accessory pack.
• For hose-free direct connections, use the O-rings from the
accessory pack.
• Use throttle valve from the accessory pack for the main air
connections.
• With hose-free direct connections, throttle valves must be fitted
in front of the main air connections.

Assembly
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5.3 Settings
For operation, the angle of rotation, the swiveling speed and the
absorber stroke must be set.
If the operating conditions change, e.g. the weight of the
workpiece, check that the movement decelerates smoothly. If
necessary, readjust angle of rotation, swiveling speed and
absorber stroke.
Angle of rotation The angle of rotation is set in order to attain fine adjustment of
the end positions.
The end positions can be configured by ±3°. If the end positions
are adjusted, the swiveling speed and absorber stroke might also
have to be readjusted.
Swiveling speed and
absorber stroke
The swiveling speed and absorber stroke are adjusted to ensure a
harmonious motion sequence for the operating conditions.
Swiveling speed and absorber stroke must always be set in relation
to each other, since both settings are dependent on each other.
Each end position is set separately. The positions of the exhaust air
throttle valve and shock absorber may differ depending on the
load.
Optimum setting
Movement
Target position
End position
Target time Time T
Damping
Swiveling speed and absorber stroke are optimum.
Erroneous
adjustment
Movement
Target position
End position
Target time
Time T
Damping
Swiveling speed too high. Assembly oscillates back.