Installation and operating instructions for R+W Servomax
Contents
1. 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 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 design have been created to accommodate numerous applications key connection Clamping hub connection tapered clamping ring connection Models EK 1 EK 2 EKL EK 6 Key connection clamping hub connection tapered clamping ring connection DODA OQ as DAT ib o ete Parts list Parts list Parts list 1 hubs 1 clamping hubs 1 tapered hubs 2 elastomer insert 2 elastomer insert 2 elastomer insert 3 set screws 3 clamping screws 3 tapered clamping rings D2. example care must be taken m A 90 turn is sufficient to ensure that the gearbox and motor shafts are in alignment and the devices are permanently mounted l Spindid Caution pN VAN Do check the fit length A indicated in table 1 The i elastomer ring must be axially movable L Lt 1 Mo EHE Figure 5 Maintenance 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 R W Antriebselemente GmbH The above mentioned information is based on our present knowl gt Alexander Wiegand Str 8 63911 Klingenberg edge and experiences and does not free the user of his own reg Tel 49 0 93 72 9864 0 Fax 49 0 93 72 986420 ular checks A legally binding guarantee is not given even in regard _ _ _ _ _ _ _ _ ___ _ 2 2 to protection rights of Third parties COUPLING TECHNOLOGY info rw kupplungen de http www rw couplings com 247 02 02 2000
3. using a torque wrench uniformly tighten the clamping screws E using a cross wise tightening pattern until all the clamp ing screws are evenly tightened to the correct tightening torque as given in table 3 The clamping ring will come to Table 3 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 other coupling hub is mounted onto the second shaft end using the same procedure Press the two coupling halves togeth er and ensure that the fit length A is maintained See Table 1 Dismounting Pull the coupling halves apart and remove the axial fastening 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 figure 4 CAUTION Prior to re assembly make sure the fastening screws are in the proper holes to draw in the taper ring Maximum Shaft misalignment R W SERVOMAX elastomer couplings compensate for lateral axial and angular shaft misalignment A fa EI EF J Lateral misalignment axial misalignment angular misalignment In Table 1 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 the coupling If several misalignm
4. IN 916 DIN 912 12 9 4 clamping screws DIN 912 12 9 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 canbe very dangerous Proper guard According to EG guidelines for machinery 89 392 EWG Appendix 11B ing should be in place at all times and is the responsi In the sense of machine guidelines MR shaft couplings are no bility of the machine builder USET or operator Do not machines but components for the installation in machines Their approach or touch a coupling while it is rotating Make putting into operation is subject to the fulfillment of all require sure that the machine is locked out and cannotbeacci ments of machine guidelines by or after integration in the final dentally started during installation or maintenance of product the coupling IS Indicates important points A Warning against danger VV COUPLING TECHNOLOGY Mounting preparation Ss A All mounting surfaces 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 tol
5. Positive stop Slide a coupling half onto the shaft to the correct axial position Tighten the set screw s to the appro priate 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 cou pling onto the second shaft and tighten 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 Access hole E Screws DIN 912 OVO a PO LNA OO oe aS A 2 OR ra E 7 QS wan ESA X Slide a coupling half onto the shaft to the correct axi al 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 that the fit length A is main tained See table 1 Mount the assembled coupling onto the second shaft and tighten the clamp screw E Dismounting 450 Simply loosen the clamp screw E and remove the cou pling Use an appropriate tool that will notdamage the Table 2 coupling to pry the coupling halves apart E Screws DIN 9 N The EK6 uses a clamping ring with axial fastening screws E Slide the coupling hub onto the first shaft
6. angular misalignment while dampening vibra tion and absorbing shock loads Several elastomer insert are available with differ Tkn Ti max ent hardness values that affect the performance of a 110 T the coupling B 12 20 Design A Elastomer ring Design B i Shore hardness 98A Shore hardness 64D red color green color A B A 150 a 300 high high B absorption torsional stiffness A DE 450 Table 1 CAUTION The maximum permissible misalignment values stated in the chart are based on the following parame ters Nominal torque TKN rotational speed n 1500 rpm and a ambient temperature of 10 to 30 C To achieve zero backlash the coupling hubs must be pressed togeth A Fit length er with an axial force F compressing the elastomer ring Cleaning the elastomer ring and hubs and applying a light film of oil will aid in the assembly process Figure 3 Mounting force Caution Use PU compatible greases such as e g vaseline Contact surfaces Figure 3 Mounting EK 1 Access hole Mounting EKL EK 2 Access hole Access hole N LLLA Spindle E Es Ae Cle FA E Screws DIN 912 KA Mounting EK 6 E Screws DIN 912 s RTTA as
7. ent 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 A Lateral misalignment has a negative effect on the service life to the elastomer Exact alignment of the coupling consider ably increases the service life of the elastomer By reducing or eliminating lateral misalignment the radial loading of the adjacent bearings is eliminated increasing service life and reducing heat For drives running at high speed we recommend aligning the R W coupling with a dial indicator figure 4 amp 5 Attachment with intermediate flange If an Rt W SERVOMAX coupling is to be installed within a a intermediate flange it is important that the drive and driven shafts align as precisely as possible The flange must be pre ntermediate flange is fixed cision machined with centering pilots and the mounting sur b z Kea i ft 6 faces must be parallel to each other and perpendicular to the ee ie 2 oe shaft axis i Ball jT Caution ER Z Do check fit length A indicated in table 1 The ial gauge tlevergauge Figure 4 elastomer ring must be axially movable meon timgas iing supon Open installation If the R W SERVOMAX coupling is to be mounted between a foot A mounted motor and a gearbox for
8. erance H7 Clearances between the shaft and hub are maintained to be within 0 01 and 0 05 mm A light coating of oil is recommended to ease the mounting process and will not affect the clamping force of the hub CAUTION 0 03 A Do not use sliding grease or oils or grease with molybdenum disulfide or other high pressure additives y CAUTION JE The maximum permissible bore diameters D1 and D2 see catalog must E D not be exceeded The coupling may burst if these values are exceeded i Serious injury or death may result from flying debris hee Figure 1 Do not clamp here During manufacturing the concentricity and run out of the coupling hub are precisely controlled Applying excess forces on the jaw end of the hub will deform the coupling negatively affecting its performance Custom modification 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 Elastomer ring is The key element of the SERVOMAX coupling is the elastomer insert It compensates for axial lateral and
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