SCHUNK SRU 20 Assembly And Operating Manual
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SCHUNK SRU 20 Assembly And Operating Manual

Pneumatic swivel unit
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Translation of the original manual
Pneumatic Swivel Unit
SRU 20 - 60
Assembly and operation manual
Superior Clamping and Gripping

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Summary of Contents for SCHUNK SRU 20

  • Page 1 Translation of the original manual Pneumatic Swivel Unit SRU 20 - 60 Assembly and operation 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.

  • Page 3: Table Of Contents

    7.1 Base unit ......................... 24 7.2 Center position (variant M) ..................25 7.3 Locked center position (variant VM) ..............26 7.3.1 Mounting the separating sleeve ..............29 8 Maintenance and care ..................... 30 8.1 Maintenance intervals .................... 30 12.03|SRU 20 - 60|en...
  • Page 4 8.5 Servicing and assembling the module ..............38 9 Assembly drawings ....................39 10 Seal kit ........................42 11 Accessories pack ...................... 43 12 Wear parts ......................44 13 Translation of original declaration of incorporation ..........47 12.03|SRU 20 - 60|en...

  • Page 5: About This Manual

    Warning about hand injuries General mandatory sign to prevent material damage Applicable documents • General terms of business • Assembly and Operating Manuals of the accessories The documents listed here, can be downloaded on our homepage www.schunk.com 12.03|SRU 20 - 60|en...

  • Page 6: Basic Safety Notes

    ( 8, Page 30). • Make sure that the environment is free from splash water and vapors as well as from abrasive or processing dust. Exceptions are modules that are designed specially for contaminated envi- ronments 12.03|SRU 20 - 60|en...

  • Page 7: 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 8: 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 disassem- bly. • Only specially trained staff should disassemble the product. 12.03|SRU 20 - 60|en...
  • Page 9 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. 12.03|SRU 20 - 60|en...

  • Page 10: Warranty

    The scope of delivery includes: • Pneumatic Swivel Unit SRU in the ordered model. • Accessory pack Technical data Basis data Designation Value Noise emission [dB(A)] ≤70 Pressure medium Compressed air, compressed air quality according to ISO 8573-1:7 4 4 12.03|SRU 20 - 60|en...

  • Page 11: Assembly And Commissioning

    1 Use the centering sleeves 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. Fig. 2 Mount attachment parts on the pinion 12.03|SRU 20 - 60|en...

  • Page 12: Air Connection

    "Technical Data" • 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. 12.03|SRU 20 - 60|en...
  • Page 13 Swiveling 90° - 0° / 180° - 0° Pay attention to the following table when using flow controls. Air connection for 1 The air connections labeled "C" and "D" must be pressurized variants with simultaneously (with a t-joint). center position (M) 12.03|SRU 20 - 60|en...
  • Page 14 Supply air Supply air center position (VM) Exhaust Exhaust throttle / or throttle / or and seperate throttle! air- throttle! no throttle no throttle main piston areas throttle throttle / or no / or no throttle throttle 12.03|SRU 20 - 60|en...

  • Page 15: Adjusting The End Positions

    This way the individual components can be unscrewed. • Please use a 19 (SRU 20 – 25) or 32 (SRU 30 – 60), which is positioned at the hexagon of the stop cover 1 Loosen bolt (3) approx. one turn using hexagon socket wrench (SRU 20 –...

  • Page 16: Shock Absorber Travel - Fine Adjustment Sru 50 Und Sru 60

    The module can leak if the maximum adjustment range is ex- ceeded: • Note the maximum adjustment range of 3 mm of the fine ad- justment. Fig. 5 Shock absorber fine adjustment Stop A Stop B 12.03|SRU 20 - 60|en...
  • Page 17 2 Turning out the striker pin shortens the damping travel by 1.5 mm per revolution (max. 3 mm). 3 Swivel the loaded unit to check the damping effect.  The end positions must be arrived at gently. 4 Retighten the nuts (1 and 2). 12.03|SRU 20 - 60|en...

  • Page 18: Adjusting The Center Position (Variant M)

    Stop A Stop C Stop D 1 Loosen the screw (3) with hexagon socket wrench (SRU 20-40: 4, SRU 50-60: 5) by approx. one turn. 2 Unscrew stops C (4) and D (6) as far as the limiting sleeve (5) 3 Apply air to the air connections marked C and D together ...

  • Page 19: Adjusting The Center Position (Variant Vm)

    2 Loosen the screw (4) about one turn with hexagon socket wrench (SRU-plus 20-40: 4, SRU 50-60: 5) 3 Actuate air connection "B".  The module swivels to stop A (2). 4 Ventilate air connection "B" and pressurize air connection "C". 12.03|SRU 20 - 60|en...

  • Page 20: Mounting And Adjusting The Sensors

     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 20-40: 10Nm, SRU 50-60: 24Nm). 12 Swivel repeatedly to test the center position setting (...

  • Page 21: Magnetic Switch Mms 22

    • 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° 12.03|SRU 20 - 60|en...

  • Page 22: Inductive Proximity Switches With Male Thread M8

    B). 5 With a hexagon socket wrench, loosen the locating bolt (98). Turn the setting screw until the proximity switch responds. Rotation clockwise (–) increases the distance, rotation anti- 12.03|SRU 20 - 60|en...
  • Page 23 6 Once you have set the sensing distance, tighten the locating bolt fully by turning clockwise 7 Proceed as above for setting the centre position and stop B. Take care to ensure that the sensors do not collide with the control cams during swivel movements. 12.03|SRU 20 - 60|en...

  • Page 24: Function And Handling

    1 Pressurize air connection B.  The pinion turns back to the stop A. Setting ranges of the Variants Fig. 8 end position adjustability 3° Fig. 9 end position adjustability 90° Fig. 10 Variant swivel angle 90° 12.03|SRU 20 - 60|en...

  • Page 25: Center Position (Variant M)

    The centre position can be adjusted by ± 3°. Due to the way in which the unit works, overshoot may occur in the centre position. Fig. 11 Actuation with a 5/3-way and a 3/2-way valve Fig. 12 Exhaust line 12.03|SRU 20 - 60|en...

  • Page 26: Locked Center Position (Variant Vm)

    2 Actuate connection A. Move from the 180° position to the center position 1 Extend locking piston D. 2 Actuate air connection B. NOTE Before actuating C and D, connections A and B must be completely ventilated. 12.03|SRU 20 - 60|en...
  • Page 27 A1 and B1. The two cylinder areas of connections A and B can then each be actuated separately. The following illustration shows holding the load at 0° by keeping B1 loaded until C is locked. 12.03|SRU 20 - 60|en...
  • Page 28 / or centre position to avoid play in the output shaft: 0° 180° 90° A2 respectively B2 By installing the separator sleeve, it is also possible to insert ex- haust flow controls in the connections A1 and B1. A2 and B2 then remain unrestricted. 12.03|SRU 20 - 60|en...

  • Page 29: Mounting The Separating Sleeve

     After removing the set screw (34) via direct- air connections on the laterally mounting surface. 4 Fit the hose connections A1, A2, B1 and B2. Position of the hose connectionsPosition of the air connec- tions 12.03|SRU 20 - 60|en...

  • Page 30: Maintenance And Care

    We recommend the lubricants listed. During maintenance, treat all greased areas with lubricant. Thinly apply lubricant with a lint-free cloth. Lubrication point Lubricant the teeth and the pinion LINOMAX Metallic sliding surfaces Renolit HLT 2 All seals Renolit HLT 2 12.03|SRU 20 - 60|en...

  • Page 31: Dismantling The Module

    (24) 4 Disassemble the protective cover (22) and the snap ring on the pinion (49) 5 Media feed through option: - Remove the flange (20) 6 Push the pinion (2 / 19) out of the housing. 12.03|SRU 20 - 60|en...

  • Page 32: Disassembling The Center Position (Variant M And Vm)

    1 Pull stops C and D out of the housing (14). 2 Remove the cover (18) of the adjusting sleeve (16). 3 Remove the stop piston (17). 4 Locked center position only: Remove the locking ring (51) on the stop piston (17). 12.03|SRU 20 - 60|en...

  • Page 33: Replacing A Shock Absorber

    6.3, Page 15) 2 Remove the safety rings (50) on the pistons. Pull out the shock absorber (54). 4 Remove all fitting discs out of the drill hole. 12.03|SRU 20 - 60|en...
  • Page 34 6 Swivel repeatedly to test the setting. ( 7.3, Page 27) with internal absorbers Fig. 19 1 Unscrew the countersunk screw (35) on stops C and D by one turn. 2 Remove the countersunk screw (58). 12.03|SRU 20 - 60|en...
  • Page 35 6 Insert the new shock absorbers. CAUTION: Note the shock ab- sorber distance ( 8.4.2, Page 37); if need be, insert or re- move the fitting disks. 7 Add fitting discs to the safety rings until they can be mounted without play. 12.03|SRU 20 - 60|en...

  • Page 36: How To Use The Shock Absorbers And Installation Dimensions

    Page 37) 50,1 Mc 600 MH2 ±0,1 50,2 WP-M 1.0-166 17,5 ±0,05 MC 600 ( 8.4.2, ±0,1 Page 37) 60,1 WP-M 1.0-166 17,5 ±0,05 60,2 WP-M 1.0-166 17,5 ±0,05 MC 600 ( 8.4.2, ±0,1 Page 37) 12.03|SRU 20 - 60|en...

  • Page 37: Measuring Instruction

    2 Measure the overhang (y) of the shock absorber's plunger in pushed-in position. Fig. 22 Shock absorber 3 Calculate the stroke of the shock absorber (h).h = x - y - 0,2 4 Adjust the overhang (h) of the shock absorber. 12.03|SRU 20 - 60|en...

  • Page 38: 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. 12.03|SRU 20 - 60|en...

  • Page 39: Assembly Drawings

    Assembly drawings Assembly drawings Fig. 23 Stop side locked centre position (version VM) Fig. 24 Stop side adjustability of final position 90° Fig. 25 Stop side adjustability of final position 3° 12.03|SRU 20 - 60|en...
  • Page 40 Assembly drawings Fig. 26 Basic components and media feed through 12.03|SRU 20 - 60|en...
  • Page 41 Assembly drawings Fig. 27 Attachment locked centre position (version VM) Fig. 28 Piston and cover basic unit Fig. 29 Attachment centre position (version M) 12.03|SRU 20 - 60|en...

  • Page 42: Seal Kit

    5517804 5517805 5517806 5517807 5517808 5517809 5517810 with locked center position and media feed-through 5517811 5517812 5517813 5517814 5517815 5517816 5517817 Contents of the seal kit ( 9, Page 39). 12.03|SRU 20 - 60|en...

  • Page 43: Accessories Pack

    5514999 5515003 with media feed-through and center position 5516591 5518658 5516595 5516597 5516599 5516601 with media feed-through and locked center position 5514984 5518656 5514992 5514996 5515000 5515004 Contents of the accessories pack ( 9, Page 39). 12.03|SRU 20 - 60|en...

  • Page 44: Wear Parts

    74 x 1.5 3771 NBR 70 10 x 10 x 10 x 10 x 9939230 9611053 9942127 9611052 9611118 9935467 9611117 O-ring DIN 6 x 1 2 x 9611063 10 x 1.0 2 x 9611044 3771 NBR 70 12.03|SRU 20 - 60|en...
  • Page 45 1 port) Shock absorber (pressure appl. 9941662 9941661 9951813 9949532 9941268 9941268 9941634 to 2 ports) Shock absorber 2 x 9701000 9951816 9949532 9941268 9941268 9941268 Shock absorber 2 x 9701000 9951816 9949532 9941268 9941634 9941634 12.03|SRU 20 - 60|en...
  • Page 46 36.17 x 47.29 x 56.82 x AS568A NBR 70 1.78 2 x 2.62 2 x 2.62 2 x 2.62 2 x 2.62 2 x 2.62 2 x 2.62 2 x 9610125 9936629 9610025 9610026 9620100 9610226 9610252 12.03|SRU 20 - 60|en...

  • Page 47: 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: Pneumatic Swivel Unit / SRU 20 - 60 / pneumatic ID number 0357300 … 0354840 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 48 12.03|SRU 20 - 60|en...

This manual is also suitable for:

Sru 25Sru 30Sru 35Sru 40Sru 50Sru 60

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