Installation and operating instructions for R+W Servomax
Contents
1. Do not approach or touch a coupling while it Is putting into operation is subject to the fulfillment of all require rotating Make sure that the machine is locked out ments of machine guidelines by or after integration in the final and cannot be accidentally started during installation product Or maintenance of the coupling ic Indicates important points AN Warning against danger Elastomer inserts The equalizing element of an EK coupling is the elastomer insert It transmits the torque without backlash and vibration The elastomer insert defines the features of the entire coupling and or of the entire drive system The insert is available in 3 different shore values Shore Material Temperature Features hardness range 30 C 100 C high damping 30 C 120 C high torsional sitffness 30 C 100 C very high damping Table 1 Design elastomer ring Nominal torque Max torque 1350 Fit Length 26 Diameter elastomer ring m lateral 4 angular Ba max values axial ics CAUTION The maximum permissible misalignment values in the chart are based on the following parameters Table 2 Nominal torqueTkn rational speed n 1500 rom and a ambient temperatur of 10 to 30 C Mounting preparation All mounting surfaces2. including shafts bores keys and key ways must be clean and free of burrs nicks and dents Inspect shaft diameters coupling bore diameters key and key way dimensions and tolerances All R W coupling bores are machined to ISO tolerance H7 Clearances between the shaft and hub are maintained to be within 0 01 and 0 05 mm A light coating of oll is recommended to ease the mounting process and will not affect the clamping force of the hub CAUTION Fit length Mounting Force AN Do not use sliding grease or oils or grease with molybdenum disulfide or other high pressure additives To achieve zero backlash the coupling hubs must be pressed together A with an axial force F compressing the elastomer ring Cleaning the _ _ elastomer ring and hubs and applying a light film of oil will aid inthe assembly process Picture 3 i Caution Contact surfaces Use PU compatible greases such as e g vaseline Picture 3 Machining the pre bored hubs CAUTION 0 03 A A AN The maximum permissible bore diameters D1 and D2 see catalog must not be exceeded The coupling may burst if these values are exceeded i Serious injury or death may result from flying debris During manufacturing the concentricity and run out of the coupling hub S are precisely controlled Applying excess forces on the jaw end of the hub N will deform the coupling negatively affecting its performance Do not clamp here Picture 1 Custom modificat
3. the coupling If several misalignment types occur at the same time It is necessary to reduce the maximum permissible misalignment values The percentage of the maximum value sum ming up actual misalignments must not exceed 100 CAUTION AN Lateral misalignment has a negative effect on the service life of the elastomer Exact alignment of the coupling consider ably increases the service life of the elastomer By reducing or eliminating lateral misalignment the radial load of the adja cent bearings is eliminated increasing service life and reducing heat For drives running at high speed we recommend the alignment of the R W coupling with a dial indicator Picture 23 24 ij 8 Mounting with intermediate flange If an R W SERVOMAX coupling is to be installed within an intermediate flange it is important that the drive and driven shafts align as precisely as possible The flange must be pre cision machined with centering pilots and the mounting sur a Intermediate flange is fixed S faces must be parallel to each other and perpendicular to the shaft axis Caution Do check fit length A indicated in table 1 The elastomer insert must be axially movable Open installation If the R W SERVOMAX coupling is to be mounted between a foot mounted motor and a gearbox for example care must be taken to ensure that the gearbox and motor shafts are in alignment and the devices are permanently mounted Caution AN
4. Do check the fit length A indicated in table 1 The elastomer insert must be axially movable Maintenance Zentrierung dial gauge or lever gauge Picture 4 magnet measuring support 90 turn is sufficient Picture 5 R W SERVOMAX couplings are maintenance free as long as they are properly mounted and the maximum misalignment values are not exceeded Extreme ambient or installed conditions such as very high or low temperatures acidic or basic solutions cutting fluids etc may cause wear and tear on the elastomer insert Regular inspection of the insert is recom mended If replacement is required use only R W original spare parts The above mentioned information is based on our present knowl R W Antriebselemente GmbH saentanedl aii L Phone 49 0 93 72 9864 0 Telefax 49 0 93 72 9864 20 edge and experiences and does not free the user of his own reg info rw kupplungen de www rw couplings com ular checks A legally binding guarantee is not given even in regard COUPLING TECHNOLOGY to protection rights of Third parties 421 08 06 4 000
5. Installation and operating instructions for R W Servomax Elastomer couplings Please carefully and completely read the following installation operation and maintenance procedures for the R W SER VOMAX elastomer couplings Failure to comply with these procedures may result in the failure of the coupling Installation of the couplings should be performed by a qualified technician SERVOMAX couplings may only be used in accordance with the technical data supplied in the catalog This installation and operation instruction does not apply for ATEX Elastomer coulings See additional instruction for these couplings General functioning R W SERVOMAX elastomer couplings are flexible shaft couplings Backlash free torque transmission is achieved through a pre ten sioned elastomer insert The coupling compensates for lateral axial and angular misalignment It is also possible to vary the stiffness and dampening effect of the coupling by using inserts with different derometers hardness A number of different hub designs have been created to accommodate numerous applications key connection clamping hub connection tapered clamping ring connection Models EK 6 Parts list 2 x EK 1 Hub 1 x Elastomer insert 2 x Set screws ISO 4029 2 x EK 2 Clamping hub 1 x Elastomer insert 2 x Scews ISO 4762 2 x Conical clamping ring 2 x Conical clamping hub 1x Elastomer insert Screws ISO 4762 1x EK2 Cl
6. amping hub 1x Elastomer insert 1x Conical hub 1x Screws ISO 4762 Parts list 2 x EKL Clamping hub 1 x Elastomer insert 2x Screws ISO 4762 2 x Clamping split hubs 1 x Elastomer insert 4x Screws ISO 4762 1 x EKL Clamping hub 1 x Expanding hub shaft 1 x Elastomer insert 2 x Screws ISO 4762 1 x EKL Clamping hub 1 x Torque limiter section with clamping hub 1 x Elastomer insert 2X Screws ISO 4762 oF 1 x Intermediate tube l 4x Screws ISO 4762 R W COUPLING TECHNOLOGY R W Antriebselemente GmbH Picture 1 Alexander Wiegand Str 8 63911 Klingenberg Phone 49 0 93 72 98 64 0 Fax 49 0 93 72 98 64 20 info rw kupplungen de www rw couplings com 1 General Information R W SERVOMAX couplings are delivered ready for installation After incoming inspection the coupling should be stored in its original packaging until it is ready for installation A copy of this installation operation and maintenance manual should be kept with the cou pling Safety warning Manufacturer s declaration Rotating couplings can be very dangerous Proper According to EG guidelines for machinery 89 392 EWG Appendix 11B guarding should be in place at all times and Is the In the sense of machine guidelines MR shaft couplings are no responsibility of the machine builder user or opera machines but components for the installation in machines Their tor
7. he elastomer insert can decrease the max critical speed Do constantly check the elastomer inserts for abrasion A fast turning bended tube can cause a major oscil Serie 10 20 60 150 300 450 800 lation Rework or replacement of the tube Distance P Picture 12 pane ef 5 e a e al a Dismounting The total length of the axis is defined by the distance P 2x0 Loosen the screws E1 of the hubs and demount the shaft Max possible misalignments Lateral misalinment A Kr Angular misalignment A Kw Axial misalignment A Ka Kw ee ane A Kw _ ca 2 A Ka _ ca 2mm AB A 2xN Picture 13 6 Mounting instructions ES 2 Proximity switch screw 180 4762 ia I ig i a lt fell Screw a ee Actuation a Picture14 Single position Multi position 1 Adjustment nut 2 Spring 3 Actuation ring 4 Balls 5 Detents 6 Proximity switch Picture 15 In a torque overload with the single position design standard and multi position design the spring disengages to allow the balls to come out of their detents separating the drive and driven ele ments Very low residual spring pressure remains so that the coup ling will re engage once the torque is reduced below the overlo ad setting A Re engagement may only be effected at low speed Full disengagement The R W full disengage torque limiting coupling can be re enga ged in six different positions or every 60 degree
8. ighten the set screw s Dismounting Loosen the set screws and remove the coupling Use an appropriate tool that will not damage the coupling to pry the coupling halves apart Set screws ISO 4762 g ping to pry pling p Picture 6 Mounting EKL EK 2 Access hole Access hole Slide a coupling half onto the shaft to the correct axial i position Using a torque wrench tighten the clamp screw E to the appropriate torque indicated in Table 2 Insert the elastomer ring and press the two coupling halves together Ensure thatthe fit length A is maintained See table 1 Mount the assembled coupling onto the second shaft and tighten the clamp screw E Dismounting E1 Screws ISO 4762 E1 Screws ISO 4762 Simply loosen the clamp screw E and remove the cou pling Use an appropriate tool that will not damage the Picture 7 coupling to pry the coupling halves apart 4 Mounting EKH Dismounting E1 Screws ISO 4762 Picture 8 Mounting EK 4 Fanuc Motor Access hole Cone 1 10 XT E1 Screws ISO 4762 XX LY NE KS SS f Pictures 9 Mounting EK 6 Y NG i a BIN us a a Ej i N Pictures 10 Dismounting The coupling needs to be pre mounted The pre mounted coupling can be set in place radialy under consideration of distan ce P Now the two split hubs can be mounted while using the locking screws E1 applying the right tightening torque Dista
9. ion of the coupling hub is possible by the customer The hub may be custom machined to a maximum dimension H see catalog for specific values The customer assumes all responsibility for the per formance of the coupling anytime a modification is made R W cannot guarantee the performance of the coupling once the customer performs any modification to the original design Consult your R W representative for custom design technical assistance Picture 2 Screws Tigthening torque Clamping models EK2 EKL EKH EZ2 M 2 0 6 Nm M 3 2 Nm M4 4Nm M5 8Nm M6 15Nm M8 35Nm M10 70Nm M12 120Nm M 16 290 Nm Conical clamping hubs Model EK6 M3 2Nm M4 3Nm M5 6Nm M5 7Nm M6 12Nm M8 35Nm M10 55Nm Expanding hub shaft Model EK7 M4 4Nm M5 9Nm M6 12Nm M8 32Nm M10 60Nm M12 110Nm M 16 240 Nm M 16 300 Nm Torque limiter section with clamping hub Model ES2 M4 45Nm M6 15Nm M8 40Nm M10 70Nm M12 130Nm M16 200Nm M 16 250 Nm Press in force full disengagement 15 30N 25 50 N 30 60 N 35 70 N 80 200 N 200 500 N 500 1000 N Table 3 Mounting EK 1 Access hole Slide a coupling half onto the shaft to the correct axial position Tighten the set screw s to the appropriate torque using a torque wrench Insert the elastomer ring and press the two coupling halves together Make sure that the fit length A is maintained See table 1 Mount the assembled coupling onto the second shaft and t
10. nce A as shown on table 2 must be kept For dismounting simply loosen the screws E1 Mounting of the clamping hub Slide the coupling on the shaft ends at the right axial position thighten the mounting screw to the specified tightening torque as shown in the table 3 Mounting of the conical hub After inserting the key into the keyway of the motor shaft slide the coup ling hub on the shaft Check if the conical hub has a proper seat on the shaft Now the nut 3 can be tigh tened on the motor shaft using the exact tightening torque specified by the motor manufacturer Dismounting Loosen the screws of the clamping hub and demount the coupling with the proper tool The EK6 uses a clamping ring with axial fastening screws E Slide the coupling hub onto the first shaft using a torque wrench uniformly tighten the clamping screws E using a cross wise tightening pattern until all the clamping screws are evenly tightened to the correct tighten ing torque as given in table 3 The clamp ing ring will come to a positive stop 1 This avoids excessive loading of the clamping ring and improves the TIR Total Indicator Run out of the coupling on the shaft Insert the elastomer ring The oth er coupling hub is mounted onto the sec ond shaft end using the same procedure Press the two coupling halves together and ensure that the fit length A is main tained See Table 1 Pull the coupling halves apart and remove the axial faste
11. ning screws E Threaded holes have been machined into the hub to accept the fastening screws which will now be used to push off the tapered ring picture 4 CAUTION Prior to re assembly make sure the fastening screws are in the proper holes to draw in the taper ring Mounting EK 7 Mounting of the clamping hub Slide the coupling onto the shaft ends at the right axial position tighten the mounting screw E3 Screws ISO 4762 to the specified tightening torque Dismounting of the clamping hub For dismounting loosen gt the mountingscrew E1 EFM YY TAS R 2 f Mounting of the expanding shaft Push the shaft hub into the bore at the right axial position thighten the mountingscrew E3 to the specified tightening torque E1 Screws ISO 4762 Dismounting of the expanding shaft For dismounting loo sen the screw E3 a few turns By putting pressure on the screw Picture 11 head the inner cone slides out of its sleeve The shaft is now loose Mounting EZ 2 Overall length The coupling needs to be pre mounted The pre mounted coupling can be set in place radi E3 Screws ISO 4762 al under consideration of distance P Now the two a gt A m split hubs can be mounted while using the locking 0 screws E1 applying the right tightening torque Distance A as shown on table 2 must be kept Machine S ATTENTION Ieee EE ee ee EAA Do always notice the max critical speed given by the manufacturer An abrasion of t
12. s with low press in force E Marks on the actuation ring and body 13 of the coupling must line up and indicate the re engagement points 17 As of size 150 and up the re engagement can be done with 2 lever which will be supported at a recess on the adjustment nut picture 18 Screwdrivers can be used as a lever CAUTION Re engagment should only be per formed when the coupling stands still and not rotating Mounting Slide the coupling on the shaft ends to the proper axial posi tion Using a torque wrench tighten the clamp screws to the correct tightening torque as indicated in the table page 12 4 CAUTION Both clamping hubs have different screws and different tightening torques Dismounting Simply loosen the clamp screw 11 12 and remo ve the safety coupling Emergency cut off he axial path of the actuation ring acti vates the mechanical switch or the proximity sensor 4 CAUTION Upon assembly it is absolutely necessary to check the function of the switch 100 Full disengagement disengaged Picture 16 With this design when a torque overload is detected the disc spring completely flips over and places no residual spring pres sure on the actuation ring The drive and driven elements are completely separated Re engagement of the coupling is not automa tic and must be performed manually Picture 17 18 Picture 17 Picture 18 Lever Screwdriver Disengagement torque set
13. ting Picture 19 Picture 20 Positive stop 1 adjustment nut 12 adjustment range 11 locking screw 13 marking At ES 2 couplings the slot of the clamping hub serves as a marking 13 3 steel actuation ring adjustment actuation range path R W torque limiters are factory set to the customer specified disengagement torque which is marked onto the coupling The adjustment range min max is also marked on the adjustment nut 1 The customer can adjust the disengagement torque as long as it is in the range 12 indicated on the adjustment nut Ten max spring force ics The adjustment range may not be exceeded while re adjusting spring path To adjust the disengagement torque loosen the locking screws 11 and rotate the adjust Diagramm 1 ment ring using a spanner wrench to the desired new setting Tighten the 3 locking Picture 21 screws 11 and test the coupling CAUTION R W torque limiters incorporate disc springs that exhibit a special spring characteristic It is impor tant to stay in the max min range of the coupling Maximum Shaft misalignment R W SERVOMAX elastomer couplings compensate for lateral axial and angular shaft misalignment A l J d Lateral misalignment axial misalignment angular misalignment In Table 2 you will find the maximum permissible values for the three axis of misalignment It is important to remain with in these limits to ensure long life and proper operation of
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