Translation of the original manual Pneumatic Rotary Unit SRU-mini 8-14 Assembly and Operating Manual Superior Clamping and Gripping
Imprint Imprint Copyright: This manual remains the copyrighted property of SCHUNK GmbH & Co. KG. It is solely supplied to our customers and operators of our products and forms part of the product. This documentation may not be duplicated or made accessible to third parties, in particular competitive companies, without our prior permission. Technical changes: We reserve the right to make alterations for the purpose of technical improvement. Document number: 0389439 Edition: 08.
Table of contents Table of contents 1 About this manual .................................................................................................... 5 1.1 Warnings ................................................................................................................... 5 1.2 Applicable documents .............................................................................................. 6 2 Basic safety notes ...........................................................................
Table of contents 10 Maintenance and care ............................................................................................. 28 10.1 Notes....................................................................................................................... 28 10.2 Maintenance and lubrication intervals. ................................................................. 28 10.3 Lubricants/Lubrication points (basic lubrication) ................................................. 28 10.
About this manual 1 About this manual This instruction is an integral part of the product and contains important information for a safe and proper assembly, commissioning, operation, maintenance and help for easier trouble shooting. Before using the product, read and note the instructions, especially the chapter "Basic safety notes". 1.1 Warnings To make risks clear, the following signal words and symbols are used for safety notes. DANGER Danger for persons.
About this manual 1.2 Applicable documents • General terms of business • Catalog data sheet of the purchased product • Assembly and Operating manuals of the accessories • Supplementary sheet "Installation and operating instructions - EX" The documents listed here, can be downloaded on our homepage www.schunk.com 6 08.
Basic safety notes 2 Basic safety notes 2.1 Intended use The product was designed to swivel permissible attachments or workpieces. The product is intended for installation in a machine/system. The requirements of the applicable guidelines must be observed and complied with. The product may be used only in the context of its defined application parameters ( 6, Page 12). The product is designed for industrial use.
Basic safety notes 2.4 Product safety Dangers arise from the product, if: • the product is not used in accordance with its intended purpose. • the product is not installed or maintained properly. • the safety and installation notes are not observed. Avoid any manner of working that may interfere with the function and operational safety of the product. Wear protective equipment. NOTE More information are contained in the relevant chapters. 2.4.
Basic safety notes 2.7 Notes on particular risks Generally valid: • Remove the energy supplies before installation, modification, maintenance, or adjustment work. • Make sure that no residual energy remains in the system. • Do not move parts by hand when the energy supply is connected. • Do not reach into the open mechanism or the movement area of the unit. • Perform maintenance, modifications, and additions outside the danger zone.
Accessories 3 Warranty If the product is used as intended, the warranty is valid for 24 months from the date of delivery from the production facility under the following conditions: • Intended use in 1-shift operation • Observe the mandatory maintenance and lubrication intervals • Observe the environmental and operating conditions Parts touching the work piece and wear parts are not part of the warranty. 10 08.
Accessories 4 Scope of delivery The scope of delivery includes • Pneumatic Rotary Unit SRU in the ordered model. • Accessory pack 5 Accessories A wide range of accessories is available for this module. For information about which accessories can be used with the appropriate product version ☞ catalog. 5.1 Sensors Overview of the compatible sensors Designation Type Magnetic switch MMS • Exact type designation of the compatible sensors see ☞ catalog.
Technical data 6 Technical data Mechanical operating data Angle of rotation [°] 180 Adjustability of end positions Min. -3 Max. +90 Repeatability [mm] < 0.07 Ambient temperature [°C] Min. -10 Max. (with shock absorber) +60 Max. (without shock absorber) +90 Relative humidity Min. 35 Max. (condensation-free) 85 IP rating 65 Noise emission [dB(A)] ≤ 70 Operating data for media connection Pressure medium Compressed air, compressed air quality according to ISO 8573-1:7 4 4 Min.
Assembly 7 Assembly 7.1 Mechanical connection WARNING Warning: Risk of injury when the machine/system moves unexpectedly! Remove the energy supplies before starting with assembly and adjustments. Make sure that no residual energy remains in the system. Check the evenness The values relate to the entire bolting surface. of the bolting surface Requirements for levelness of the bolting surface (Dimensions in mm) Diameter < 100 > 100 Permissible unevenness < 0.02 < 0.
Assembly Mounting The module can be mounted from the top, from the bottom or from the side. Fig. 1 Assembly options Mounting material Item SRU Designation 8 Ø5 M2.5 / 25 deep Ø3 x 8 91 Centering sleeves 92 2 Screws for mounting from the top (output side) Cylindrical pin for locating the adapter plate Screws for mounting form the bottom (floor side) Screws for side mouting 3 Screse for mounting the adapter plate 93 1 10 Ø5 M2.
Assembly 7.2 Air connection DANGER Danger of explosion in explosion risk areas! • Follow the instructions in supplementary sheet "Installation and operating instructions - EX" for modules in explosionresistant versions (EX)! WARNING Warning: Risk of injury when the machine/system moves unexpectedly! Remove the energy supplies before starting with assembly and adjustments. Make sure that no residual energy remains in the system. NOTICE Observe the requirements for the air supply ( 6, Page 12).
Assembly Fig. 2 air connection Thread diameter of the air connections Item Designation SRU 8 10 12 1 Size of thread for hose connection (A ; B ; C) M3 2 Size of thread for hose-free direct connection on bottom side (A ; B ; C) M3 A Hose connection for rotating clockwise B Hose connection for rotating counter-clockwise C Hose connection for rotating in central position 14 • Only open the air connections required.
Assembly 7.3 Adjustment of the end positions Fig. 3 Adjustment of the end positions 1 Apply pressure to connection A until the rotary unit has reached its end position. 2 Loosen the lock nut (40) at stop B. 3 Set the end position with sleeve B (5) and stop B (15). 4 Hold sleeve B (5) and stop B (15) tight and tighten the lock nut (40). 5 Check the end positions. 6 Apply pressure to connection B until the rotary unit has reached its end position. 7 Loosen the lock nut (40) at stop A.
Assembly 7.4 Adjustment of the shock absorber stroke (Variant H) Fig. 4 Adjustment of the shock absorber Setting the 1 Apply air pressure to connection A. shock absorption 2 Loosen the lock nut (46) at stop B, providing counter support for end position 0° for the sleeve (5). 3 Unscrew the shock absorber (49) to decrease shock absorption and rotation time. 4 Load and rotate the module to check the shock absorption effect. The end position must be approached softly.
Assembly 7.5 Adjustment of the shock absorber stroke (Variant S) Fig. 5 Adjustment of the shock absorber Pos. X SRU 10 Maximum screw-in depth of the shock absor- 20.5 ber [mm] 12 14 24 34 Setting the shock 1 Apply air pressure to connection A. absorption for 2 Loosen lock nut (46) on stop B, providing counter support for end position 0° the sleeve (61). 3 Unscrew the shock absorber (69) to decrease shock absorption and rotation time. 4 Load and swivel module to check damping effect.
Assembly 7.6 Adjustment of the central position (Variant M) Fig. 6 Adjustment of the central position 1 Depressurize connections A and B. 2 Apply air pressure to connection C. 3 Loosen the lock nuts (54) of the stop spindles (25). 4 Unscrew stop A2 as far as possible. 5 Turn the pinion clockwise and keep it pressed against stop A1. 6 Turn stop A1 until the desired central position has been reached. 7 Turn stop A2 until there is no more play in the pinion in the central position.
Assembly 7.7 Sensors The module is prepared for a number of sensors. Other sensors can be used with a mounting kit. • If you require further information on sensor operation, contact your SCHUNK contact person or download information from our homepage. • Technical data for the sensors can be found in the data sheets (included in the scope of delivery). 7.7.1 MMS 22 magnetic switch Fig. 7 NOTICE Sensor can be damaged during assembly. Do not exceed the maximum tightening torque of 10 Ncm for the set screws.
Assembly The proximity switches are electronic components, which can react sensitively to high-frequency interference or electromagnetic fields. 1 Check to make sure that the cable is fastened and installed correctly. Provide for sufficient clearance to sources of highfrequency interference and their supply cables. 2 Parallel switching of several sensor outputs of the same type (npn, pnp) is permissible, but does not increase the permissible load current.
Commissioning 8 Commissioning NOTICE Damage to the rotary module possible! The rotary module can be damaged if it arrives too abruptly in the end position. • The rotary motion must reach the end position without jerk or bounce. • Therefore flow control valves and shock absorbers must be used( 8.1, Page 23),( 8.2, Page 25). • Please observe the diagrams and information in the catalog pages. 8.
Commissioning Fig. 10 NOTE If the speed is too high the shock absorber will be overloaded. Fig. 11 4 Open the exhaust flow control valve until a smooth movement is reached. NOTE In most cases the rotation will still be too slow. Further adjustment and optimization of the swivel time is achieved via adjusting the shock absorber stroke. 24 08.
Commissioning 8.2 Adjustment of the shock absorber stroke NOTE When received from the factory, the unit is set to utilize the maximum shock absorber stroke. Fig. 12 The shock absorber stroke is too long and the end position is reached too slowly. Fig. 13 The shock absorber stroke is too short and the unit arrives in the end position too abruptly. Fig. 14 Optimal shock absorber stroke. 08.
Trouble shooting 9 Trouble shooting 9.1 Module does not move? Possible cause Corrective action Pressure drops below minimum. Check the air supply. ( 7.2, Page 15) Compressed air lines switched Check compressed air lines. ( 7.2, Page 15) Proximity switch defective or set incorrect. Repair the proximity switch. Unused air connections not closed. Close the unused air connections. Flow control valve closed. Open the flow control valve. Component is broken, e.g.
Trouble shooting 9.3 The module rotates abruptly? Possible cause Corrective action Too little grease in the mechanical guiding areas of the module Clean the module and relubricate it. ( 10, Page 28) Compressed air lines are blocked Check the compressed air lines for crushing or damage. Mounting surface is not even enough Check the levelness of the bolting surface. Flow control valve is missing or not set correctly Install and adjust flow control valve.
Maintenance and care 10 Maintenance and care 10.1 Notes DANGER Danger of explosion in explosion risk areas! • Follow the instructions in supplementary sheet "Installation and operating instructions - EX" for modules in explosionresistant versions (EX)! Original spare parts When replacing damaged parts (wearing parts/spare parts) only use SCHUNK original spares. 10.2 Maintenance and lubrication intervals. NOTICE At ambient temperature above 60°C the lubricants can harden faster.
Maintenance and care 10.4 Disassembly of the module Position of the position numbers ( 11, Page 31) WARNING Warning: Risk of injury when the machine/system moves unexpectedly! Remove the energy supplies before starting with assembly and adjustments. Make sure that no residual energy remains in the system. 1 Remove the compressed air hoses. 2 Unscrew the screws (34) and remove the cover 1 (3). 3 Unscrew the screws (60) and remove the cover 2 (14).
Maintenance and care Assembly Assembly takes place in the opposite order to disassembly. Observe the following: • Unless otherwise specified, secure all screws and nuts with Loctite no. 243 and tighten with the appropriate tightening torque.( 10.5.1, Page 30) NOTE The cover of the internal air feed-through (18) can be rotated by 180° when installed if needed. 10.5.1 Screw tightening torques Position of the position numbers ( 11, Page 31) Specified in Nm Item 30 SRU 8 10 12 14 34 0.75 0.75 1.
Assembly drawing 11 Assembly drawing The following figures are example images. They serve for illustration and assignment of the spare parts. Variations are possible depending on size and variant. * Wearing part, replace during maintenance. Included in the seal kit. Seal kit can only be ordered completely. ** nur bei SRU 8 und SRU 10 Fig. 15 Assembly of rotary unit 08.
Assembly drawing Fig. 16 Assembly of fluid feed-through and hydraulic damping Fig. 17 Assembly of rotary unit with central position Fig. 18 Assembly of rotary unit with damper-elastomer-damping 32 08.
Seal kit 12 Seal kit ID.-No. of the seal kit Seal kit for SRU 8 SRU 10 SRU 12 SRU 14 Variant ID number W/H/S 5517914 W/H/S-M 5517915 W/H/S-2/4 5517916 W/H/S-2/4 5517917 W/H/S 5517918 W/H/S-M 5517919 W/H/S-2/4 5517920 W/H/S-2/4 5517921 W/H/S 5517922 W/H/S-M 5517923 W/H/S-2/4 5517924 W/H/S-2/4 5517925 Contents of the seal kit ( 11, Page 31). 08.
Seal kit 34 08.
Translation of original declaration of incorporation 13 Translation of original declaration of incorporation in terms of the Directive 2006/42/EG, Annex II, Part 1.B of the European Parliament and of the Council on machinery. Manufacturer/ Distributor SCHUNK GmbH & Co. KG Spann- und Greiftechnik Bahnhofstr.
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