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Summary of Contents for SCHUNK SRU-plus 20
- Page 1 Translation of the original manual Pneumatic Swivel Unit SRU-plus 20 - 60 Assembly and Operating Manual Superior Clamping and Gripping...
- Page 2 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 particu- lar competitive companies, without our prior permission.
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Page 3: Table Of Contents
7.4.2 Magnetic switch MMS 22 ................29 8 Commissioning ......................31 8.1 Setting the speed ....................31 8.2 Adjustment of the shock absorber stroke .............. 32 9 Function and handling ..................... 35 9.1 Base unit ......................... 35 04.07|SRU-plus 20 - 60|en... - Page 4 12.5 Addition locked middle position ................56 12.6 Piston and cover basic unit..................56 12.7 Addition center position ..................56 13 Seal kit ........................57 14 Accessories pack ...................... 58 15 Translation of original declaration of incorporation ..........59 04.07|SRU-plus 20 - 60|en...
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Page 5: About This Manual
Ignoring a safety note like this can lead to irreversible injury and even death. CAUTION Dangers for persons. Non-observance can cause minor injuries. NOTICE Material damage Information about avoiding material damage. DANGER Danger of explosion in potentially explosive areas! 04.07|SRU-plus 20 - 60|en... -
Page 6: Applicable Documents
• SRU-plus limit position adjustability 3° • SRU-plus limit position adjustability 90° • SRU-plus with media feed-through • SRU-plus without media feed-through • SRU-plus with pneumatic center position • SRU-plus with locked center position Fig. 1 Type designation 04.07|SRU-plus 20 - 60|en... - Page 7 (0° - 180°) 10 addition M (0°-90°-180°) 16 secure stop - locked middle position 11 addition locked middle 17 secure stop (0° - 90°) position (0°-90°-180°) cover 12 pinion with media feed through 04.07|SRU-plus 20 - 60|en...
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Page 8: Basic Safety Notes
• Observe Maintenance and lubrication intervals 44). • 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 en- vironments. 04.07|SRU-plus 20 - 60|en... -
Page 9: Product Safety
Provide protective equipment per EC Machinery Directive. 2.4.2 Constructional changes, attachments, or modifications Additional drill holes, threads, or attachments that are not offered as accessories by SCHUNK may be attached only with permission of SCHUNK. Personnel qualification The assembly, initial commissioning, maintenance, and repair of the product may be performed only by trained specialist person- nel. -
Page 10: Using Personal Protective Equipment
• Perform maintenance, modifications, and additions outside the danger zone. • Secure the product during all operations against uncontrolled activation. • Take a precautionary approach by maintenance and disassembly. • Only specially trained staff should disassemble the product. 04.07|SRU-plus 20 - 60|en... - Page 11 Note that suitable emergency-off strategies (e.g. controlled shut down) and restarting strategies (e.g. pressure build-up valves, appropriate valve switching sequences) are needed for all pneumatic actuators. Cutting off the pressure in an uncontrolled manner could lead to undefined states and behavior. 04.07|SRU-plus 20 - 60|en...
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Page 12: Warranty
• 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. 04.07|SRU-plus 20 - 60|en... -
Page 13: Scope Of Delivery
Magnetic switch Inductive proximity switches • Exact type designation of the compatible sensors see ☞ catalog. • If you require information on sensor operation, contact your SCHUNK contact person or download information from our homepage. www.schunk.com 04.07|SRU-plus 20 - 60|en... -
Page 14: Technical Data
Max. pressure [bar] See data sheet The catalog contains diagrams for designing to the maximum allowable moment of inertia.Your contact person at SCHUNK can support you for calculating other applications. More technical data are included in the catalog data sheet. Whi- chever is the latest version. -
Page 15: Assembly
1 Use the centering sleeves (2) from the enclosed pack. at the base 2 Secure the module from the output side via the drill holes provided for this purpose, or at the base using the threads. 04.07|SRU-plus 20 - 60|en... - Page 16 (4) between the pinion and a mounting plate (pro- proximity switch vided by the customer). 2 Use the 4 threaded holes to secure the mounting plate. 3 Secure the attachment to the mounting plate. 04.07|SRU-plus 20 - 60|en...
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Page 17: Air Connection
( 6, Page 14). • Only open the air connections required. • Seal air connections not required using the locking screws from the enclosed pack. • For hose-free direct connections use the two O-rings from the enclosed pack. 04.07|SRU-plus 20 - 60|en... - Page 18 Extend locking piston (VM) Hose connection Approach center position (M) Extend locking piston (VM) Swiveling 0° -90° / 0° - 180° Swiveling 90° - 0° / 180° - 0° Pay attention to the following table when using throttles. 04.07|SRU-plus 20 - 60|en...
- Page 19 Supply air throttle Supply air throttle Supply air Supply air position (VM) throttle throttle With locked Supply air Supply air center position (VM) Exhaust Supply Exhaust Supply throttle throttle and separate main piston chambers throttle throttle throttle throttle 04.07|SRU-plus 20 - 60|en...
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Page 20: Adjusting The Limit Positions
Components can come loose if the limit positions are not ad- justed properly: • Only trained staff may perform these actions. • Use a 19 (SRU-plus 20-25) or 32 (SRU-plus 30-60) and apply to the hexagon screw on the limit stop cover. 04.07|SRU-plus 20 - 60|en... - Page 21 3 Check the setting: ventilate air connection "A" and actuate it again. Adjust the end positions if necessary. 4 Tighten screws (2) fully. (SRU-plus 20-40: 10 Nm; SRU-plus50-60: 24 Nm) 5 Swivel repeatedly to test the limit position setting. 04.07|SRU-plus 20 - 60|en...
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Page 22: Shock Absorber Stroke Fine Adjustment 0° And 180
The module can leak if the maximum adjustment range is ex- ceeded: • Note the maximum adjustment range of the fine adjustment. Designation SRU-plus Max. adjustment range [mm] 10.5 10.5 Fig. 7 Shock absorber fine adjustment Stop A Stop B 04.07|SRU-plus 20 - 60|en... - Page 23 Setting the dampening 1 Remove the cover (5). for end position 0° 2 Secure stop A (1) with 19 (SRU-plus 20-25) or (SRU-plus 30-60) and loosen the nut (3) on the stop pin with (4) A with 14 (SRU-plus 20-25) or 24 (SRU-plus 30-60).
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Page 24: Adjusting The Center Position (Variant M)
6 Turn stop D (6) until the pinion no longer has play in the cen- ter position. 7 Re-tighten the screw (3) again (SRU-plus 20-40: 10 Nm, SRU-plus 50-60: 24 Nm). 8 Swivel repeatedly to test the center position setting. -
Page 25: Adjusting The Center Position (Variant Vm)
Fig. 9 Adjusting of the center position locking Stop B Stop C Stop A Limiting sleeve Bore hole for hexagon socket wrench Internal screw Stop D 04.07|SRU-plus 20 - 60|en... -
Page 26: Sensors
9 Actuate air connection "B". The module swivels to stop D (7) (basic setting 90°). 10 Turn stop D (7) to the required center position. 11 Re-tighten the screw (4) again (SRU-plus 20-40: 10 Nm, SRU-plus 50-60: 24 Nm). ( 9.3, 12 Swivel repeatedly to test the center position setting. -
Page 27: Inductive Proximity Switch In 80
• Parallel switching of several sensor outputs of the same type (npn, pnp) is permissible, but does not increase the permissible load current. • Note that the leakage current of the individual sensors (ca. 2 mA) is cumulative. 04.07|SRU-plus 20 - 60|en... - Page 28 (8). Caution: Only tighten the hexagon socket screw (7) far enough that the clamping sleeve (6) can still be turned. 3 Turn the pinion counter-clockwise to the corresponding stop/center position. 04.07|SRU-plus 20 - 60|en...
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Page 29: Magnetic Switch Mms 22
(4) until the proximity switch is secured. 5 The switching distance has now been set: Tighten the clamp- ing screws (4) until the proximity switch is secured. 7.4.2 Magnetic switch MMS 22 Fig. 12 Fig. 13 04.07|SRU-plus 20 - 60|en... - Page 30 • One sensor each to monitor the two limit positions • For monitoring approach to the center position from end position 0° • For monitoring approach to the center position from end position 180° 04.07|SRU-plus 20 - 60|en...
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Page 31: Commissioning
1 Completely close the exhaust flow control valves. 2 Slowly and gradually open the exhaust flow control valves and rotate the load. 3 Further open the exhaust flow control valves until the rotation gradually and smoothly decelerates. 04.07|SRU-plus 20 - 60|en... -
Page 32: Adjustment Of The Shock Absorber Stroke
Adjustment of the shock absorber stroke NOTE When received from the factory, the unit is set to utilize the max- imum shock absorber stroke. 04.07|SRU-plus 20 - 60|en... - Page 33 The shock absorber stroke is too long and the end position is reached too slowly. Fig. 18 The shock absorber stroke is too short and the unit arrives in the end position too abruptly. Fig. 19 Optimal shock absorber stroke. 04.07|SRU-plus 20 - 60|en...
- Page 34 right turn, longer shock absorber stroke 4 Secure the nut for the angel of travers (2) and tighten the stop nut (3). 5 Put on the cover cap (1). Repeat these steps at the second shock absorber. 04.07|SRU-plus 20 - 60|en...
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Page 35: Function And Handling
1 Pressurize air connection B. The pinion turns back to the stop A. Setting ranges of the Variants Fig. 21 end position adjustability 3° Fig. 22 end position adjustability 90° Fig. 23 Variant swivel angle 90° 04.07|SRU-plus 20 - 60|en... -
Page 36: Center Position (Variant M)
The pinion rotates on the center position. The center position can be adjusted by ± 3°. By design, overshoot- ing can occur in the center position. Circuit diagram control (example) Fig. 25 Actuation with one 5/3 and one 3/2 directional control valve 04.07|SRU-plus 20 - 60|en... -
Page 37: Locked Center Position (Variant Vm)
2 Actuate connection A. Move from the 180° position to the center position 1 Extent locking piston D. 2 Actuate air connection B. NOTE Before actuating C and D, connections A and B must be completely ventilated. 04.07|SRU-plus 20 - 60|en... - Page 38 Function and handling Circuit diagram control (example) Fig. 26 Actuation with two 5/3 directional control valves 04.07|SRU-plus 20 - 60|en...
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Page 39: Mounting The Separating Sleeve
(If necessary, turn the set screw (3) back a little.) 3 Mount hose connections A1, A2, B1 and B2. ( 9.3.2, Page 40) Position of the hose connections ( 9.3.2, Page 4 Control SRU-plus as shown in 41). 04.07|SRU-plus 20 - 60|en... -
Page 40: Version Vm With Separate Piston Chambers
• Screw the separating sleeves from the accessory pack ( 9.3.1, Page into air connections A1 and B1. 39)The two cy- linder chambers of connections A and B can then be activated separately. Fig. 28 Position of the air connections 04.07|SRU-plus 20 - 60|en... - Page 41 Exhaust air throttles can also be used for connections A1 and B1 by installing separating sleeves. A2 and B2 then remain unthrottled. 04.07|SRU-plus 20 - 60|en...
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Page 42: Trouble Shooting
( 7.2, Page 17) Pressure drops below minimum. Check the air supply. Components have become loose Send the module to SCHUNK with a repair order or dis- e.g. through over-loading. assemble module. Shock absorber defective Check or, if necessary, replace the shock absorber (... -
Page 43: The Module Rotates Abruptly
Fine adjustment of the Check the shock absorber stroke and, if need be, read- ( 7.3, Page 20) shock absorber stoke incorrect just Shock absorber defective Check or, if need be, replace the shock absorber ( 11, Page 44) 04.07|SRU-plus 20 - 60|en... -
Page 44: Maintenance And Care
During maintenance, treat all greased areas with lubricant. Thinly apply lubricant with a lint-free cloth. Lubricant point Lubricant the teeth and the pinion Molykote BR 2 plus Metallic sliding surfaces microGLEIT GP 360 All seals Renolit HLT 2 04.07|SRU-plus 20 - 60|en... -
Page 45: Disassembly Of The Module
3 Mark the installation position of the pinion (2/19) and the pis- tons (24). 4 Remove the protective cover (22) and disassemble the safety ring (49) on the pinion. 5 Media feed-through option: - Remove the flange (20). 6 Pull the pinion (2/19) out of the housing. 04.07|SRU-plus 20 - 60|en... -
Page 46: Disassembling The Center Position (Variant M And Vm)
Replacing a shock absorber The shock absorbers are specially tested and can only be sourced from SCHUNK .The shock absorber have a restricted lifetime, de- pending on the load. 1 Test the shock absorbers for function regularly. The shock ab- sorbers function correctly when the module moves smoothly into the end positions. - Page 47 32 (SRU- plus 30-60) and screw in the stop pin with the hexagon socket wrench 5 (SRU-plus 20-25) or 6 (SRU-plus 30-40) or 8 (SRU-plus 60) up to the stop pin limit. 10 Readjust the dampening as described in( 7.3, Page 20)
- Page 48 7 Add fitting discs to the safety rings until they can be mounted without play. Base unit Shock absorber Maintenance for SRU-plus 20-W with elastomer SRU-plus 20-W damping Fig. 30 Replacing the spring-elastomer dampening 1 Unscrew the screws (1).
- Page 49 Maintenance and care Base unit Shock absorber Maintenance for SRU-plus 20-S with elastomer SRU-plus 20-S damping Fig. 31 Replacing the damper-elastomer dampening 1 Unscrew the screws (1). 2 Pull the stop cover (2) off. 3 Remove the safety ring (4) from the piston.
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Page 50: Shock Absorber Types And Shock Absorber Overlap (H)
40 W 19.4 -0.1 WP-M -0.1 1.0-266 1.0-266 G WP-M Add fitting discs at position 50 W (2) until the shock absor- 1.0-266 ber (4) is scope-free in- WP-M 50 H serted into the piston (5). 1.0-466 04.07|SRU-plus 20 - 60|en... - Page 51 Safety ring Piston Shock absorber overlap 1 Add fitting disks (1/2) to the shock absorber until the shock absorber overlap (h) is reached and the shock absorber is in contact with the safety ring (3) without play. 04.07|SRU-plus 20 - 60|en...
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Page 52: Servicing And Assembling The Module
Assembly takes place in the opposite order to disassembly. Observe the following: • Do not damage the O-rings (41) during assembly. • Unless otherwise specified, secure all screws and nuts with Loc- tite no. 243 and tighten with the appropriate tightening torque. 04.07|SRU-plus 20 - 60|en... -
Page 53: Assembly Drawings
( 12.4, Page 55) Locating face end position adjustability 3° ( 12.5, Page 56) Addition locked middle position (variant VM) ( 12.6, Page 56) Piston and cover basic unit ( 12.7, Page 56) Addition center position (variant M) 04.07|SRU-plus 20 - 60|en... -
Page 54: Basic Components And Media Feed-Through
Assembly drawings 12.1 Basic components and media feed-through Fig. 34 Contained in seal kit. Contained in accessory pack. only by SRU-plus 40 04.07|SRU-plus 20 - 60|en... -
Page 55: Fitting Locked Center Position
Assembly drawings 12.2 Fitting locked center position Fig. 35 12.3 Locating face end position adjustability 90° Fig. 36 12.4 Locating face end position adjustability 3° Fig. 37 Contained in seal kit. Contained in accessory pack. 04.07|SRU-plus 20 - 60|en... -
Page 56: Addition Locked Middle Position
Assembly drawings 12.5 Addition locked middle position Fig. 38 12.6 Piston and cover basic unit Fig. 39 12.7 Addition center position Fig. 40 Contained in seal kit. Contained in accessory pack. 04.07|SRU-plus 20 - 60|en... -
Page 57: Seal Kit
Seal kit Seal kit ID.-No. of the seal kit SRU-plus Seal kit for SRU-plus 20 SRU-plus 25 SRU-plus 30 SRU-plus 35 SRU-plus 40 SRU-plus 50 SRU-plus 60 Basic seal kit 0371000 0371004 5518598 0371008 0371012 0371016 0371020 with center position... -
Page 58: Accessories Pack
Accessories pack Accessories pack ID.-No. of the accessory pack SRU-plus Accessory pack for SRU-plus 20 SRU-plus 25 SRU-plus 30 SRU-plus 35 SRU-plus 40 SRU-plus 50 SRU-plus 60 without media feed-through 5514981 5518653 5514989 5514993 5514997 5515001 with media feed-through... -
Page 59: Translation Of Original Declaration Of Incorporation
European Parliament and of the Council on machinery. The declaration is rendered invalid if modifications are made to the product. Product designation: Pneumatische Schwenkeinheit / SRU-plus 20 - 60 / pneumatic ID number 0361400 … 0364452 The incomplete machine may not be put into operation until conformity of the machine into which the incomplete machine is to be installed with the provisions of the Machinery Directive (2006/42/EC) is confirmed. - Page 60 04.07|SRU-plus 20 - 60|en...
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