Installation and Operating Instructions for R+W Metal Bellows
Contents
1. 599 02 12 50002. 120 degrees apart JF Figure 19 _ Series 10 and smaller 1 x screw per hub y Series 15 and up 2 x screws per hub 120 degrees apart Hub length Dismounting Simply loosen the set screw s E and remove the coupling R W couplings incorporate a unique dismounting groove that provides clearance for any burr caused by the setscrew 9 Shaft groove or flat is not required Single position Multi position Multi position standard standard Single position Figure 16 Pre tensioning F Figure 17 Mounting A shaft groove or flat is not required Prior to mounting it is necessary to take into consideration the overall length of the assembled coupling The blind mate coupling requires a specific pre tensioning F between the two coupling halves to ensure backlash free operation Mount the female bellows body onto the spindle shaft to the proper axial position Tighten the clamping screw s per the mounting instructions for the coupling hub design Mount the male tapered segment onto the motor shaft The proper axial position of the coupling segment on the motor shaft is when the motor is mounted and the coupling is compressed by the proper pre tensioning value F When the coupling segment Is properly positioned tighten the clamping screw to the proper tightening torque using a torque wrench press fit length A The maximum misalignment values of the coupling will not be affected by the pre tens
3. position has been reached tighten the nut 5 to the correct tightening torque as specified by the customer with a torque wrench Insert the second shaft into the other end of the coupling to the proper axial position Using a torque wrench uniformly tighten the clamping screws B using a cross wise tightening pattern as explained for the BK3 until all the clamping screws are evenly tightened to the correct tightening torque as specified in table 1 Dismounting Remove the conical sleeve as described for the BK3 To dismount the other end loosen the nut 5 that is axially securing the tapered shaft Remove the tapered shaft with an appropriate tool Conical clamping ring connection Model BK 6 axial blind mate Mounting The BK 6 uses a conical clamping with axial fastening screws Slide the coupling half onto the motor shaft to the proper axial position Using a torque wrench tighten the clamping screws C in 3 steps with 1 3 2 3 and full tight ening torque in a cross wise pattern Tightening torque of the clamping screws are given in table 1 The clamping ring 5 will come to a positive stop 6 Dismounting Loosen the motor mounting screws Remove the motor together with the male tapered segment Loosen the clamping screws C Use the three jack screws 7 to back off the conical clamping ring and remove the coupling Evenly loosen the fastening screws C approx 2 complete turns and back out
4. tained to 0 01 0 05 mm A light coating of machine oil is recommended to ease the mounting process and will not affect the clamping force of the hub CAUTION Oils and greases containing molybdenum disul phide or other high pressure additives should not be used R W 1 Mounting flange Model BK 1 Mounting The BK1 can be piloted with either the ID or OD of the coupling hub Mount the coupling to the customer supplied flange and secure with mounting screws 4 Tighten the mounting screws to the correct tightening torque supplied by the customer with a torque wrench Dismounting simply loosen the flange mounting screws and remove the coupling Mounting Prior to mounting make sure that the shafts to be connected do not exceed the angular or lateral misalignment limits for the coupling to be used This data can be found in the catalog Slide the metal bellows coupling onto the motor shaft end When the correct axial position has been reached tighten the clamping screw A to the correct tightening torque as indicated in table 1 with a torque wrench Insert the spindle shaft into the other end of the coupling to the proper axial position Make sure that the coupling is free of any axial forces before tightening Tighten the clamping screw A as above using a torque wrench to the proper tightening torque For the split hub model it is necessary to maintain the proper separation between shaft ends dimension H in the cat
5. Installation and Operating Instructions for R W Metal Bellows Couplings Models BK MK Please carefully and completely read the following installation opera tion and maintenance procedures for the R W safety couplings Failure to comply with these procedures may result in poor performance and or failure of the bellows coupling Installation of the bellows couplings should be per formed by a qualified technician Additional information can be found in the individual product catalog BK MK Transport R W bellows couplings are delivered ready for installation After incom ing Inspection the coupling should be stored in its original packaging un til ready for installation A copy of this installation and operating manual should be kept with the coupling General function Safety alert Rotating couplings can be very dangerous Proper guarding y should be in place at all times and is the responsibility of the machine builder user or operator Do not approach or touch a coupling while it is rotating Make sure the machine is locked out and be accidentally started during Installation or mainte nance of the coupling Manufacturer s declaration According to EG guidelines for machinery 2006 42 EG Appendix IIB As per machinery guidelines MR shaft couplings are not considered machines but rather components for installation in a machine Their putting into operation is subject to the f
6. alog CAUTION For the split hub design the shafts must extend into the cou pling to the full width of the fully split clamping hubs Dismounting simply loosen the clamping screws and remove the coupling Mounting Prior to mounting make sure that the shafts to be connected do not exceed the angular or lateral misalignment limits for the coupling to be used slide the coupling onto the motor shaft to the proper axial position Using a torque wrench tightening the clamping screws B in 3 steps with 1 3 2 3 and full tightening torque in a cross wise pattern Tightening torque of the clamping screws is shown in table 1 CAUTION Overtightening of the clamping screws B can cause damage Dismounting Loosen the clamping screws B evenly Use the three removal jack screws to remove the conical sleeve Pay attention to the equal force distribution of the removal jack screws Grease on the jack screw heads will enhance the friction This results in less force being required to remove the conical sleeve CAUTION Prior to re assembly make sure the three jack screws 4 are turned back to their original position Tapered hub connection Model BK 4 Mounting Prior to mounting make sure that the shafts to be connected do not exceed the angular or la teral misalignment limits for the coupling to be used This data can be found in the catalog Slide the metal bellows coupling onto the motor shaft end When the correct axial
7. ioning R W 3 Screw tightening torque pre tensioning Series MK nn ees sss esses 500 Series BKC BKS 15 300 Series BKM 20 1000 Series BKL a OES 300 Series BK P fis 30 60 feof 300 500 800 1500 4000 Clamping screws x x M2 M2 M2 5 M3 M4 M4 M5 M6 M8 M10 M10 M12 M12 M12 M16 M16 M20 x Clamping screws xX x x x x x x x IMIM M x x x x M8 x M8 M10 M12 M1 Clamping screws x x x x ix x x x M4 M5 M5 x x x x M8 x M8 x x Clamping screws x x M3 M3 M4 M4 M5 M6 M5 M6 MB x x x x x IMI x x x x Ol eae t shs a afshi a a wets be Clamping screws M2 M2 5 M3 M3 M3 M4 M5 M6 x x x x xix za Maximum shaft misalignments lateral axial and angular shaft misalignment simultaneously logs you will find the maximum permissible values for the three types of misalignment It is important to remain within these limits to ensure long life and proper operation of the coupling R W metal bellows couplings compensate for Li Inthe section Technical Information within the product cata Lateral misalignment A Kr CAUTION Lateral misalignment has a negative effect on the service life of the bellows Exact alignment of the R W metal bellows coupling considerably increases the ser Axial misalignment A Ka vice life of the coupling By reducing or eliminating lateral misa
8. lignment the radial load on the adjacent bearings is eliminated while increasing service life and reducing heat For high speed applications we recommend aligning the R W coupling with dial indicators or a laser alignment tool Open installation Figure 20 centering pilot dial indicator If an R W metal bellows coupling is to be installed within an inter If the R W coupling is to be mounted between a foot mounted motor mediate flange it is important that the drive and driven shafts are and a gearbox please take extra care during installation Ensure that aligned as precisely as possible The flange must be precision ma the gearbox and motor shafts are properly aligned and the devices are chined with centering pilots and the mounting surfaces must be par permanently mounted allel to each other and perpendicular to the shaft axis Maintenance R W metal bellows couplings are maintenance free as long as they are properly mounted and the maximum misalignment values are not exceeded R W Antriebselemente GmbH L Alexander Wiegand Str 8 63911 Klingenberg The above mentioned information is based on our present Tel 49 0 93 72 98 64 0 Fax 49 0 0977 B 6420 knowledge and experiences and does not free the user of his own regular checks A legally binding guarantee is not given COUPLING TECHNOLOGY info rw kupplungen de www rw kupplungen de even in regard to protection rights of Third parties
9. the conical clamping ring with the removal jack screws 7 After removal return the removal jack screws to their original position Figure 14 Mounting Completely insert the expanding shaft side of the coupling into the hollow bore Using a torque wrench tighten the clamping screw D to the proper tightening torque as indicated in table 1 Next insert the shaft end or encoder shaft into the other side of the coupling En sure that the shaft has been inserted to the proper axial position and that no residual axial forces remain on the coupling Using a torque wrench tighten the clamping screw A to the proper tightening torque as indicated in table 1 Hollow shaft Dismounting Simply loosen the clamping screws A and D and remove the coupling It may be necessary to apply axial pressure to the clamping screw D to remove expanding shaft Radial set screw connection Models MK 1 MK 4 ISO 4029 Dismounting Mounting groove Slide the complete coupling onto the shaft end to the proper axial position Using a torque ie wrench tighten the set screw s E to the proper tightening torque as indicated in table 1 repi Insert the second shaft end to the proper axial position and ensure no residual axial forces exist on the coupling Tighten the set screw s using the same procedure as on the first side Shia For series 10 and smaller couplings each hub has one set screw series 15 and larger have two set screws per hub
10. ulfillment of all requirements of machinery regulations by or after integration into the final product R W metal bellows couplings are flexible shaft couplings The highly flexible torsionally rigid stainless steel bellows provides backlash free transmission of torque The metal bellows compensates for lateral axial and angular misalignment with very low restoring forces Several different hub designs are available to suit a variety of applications Standard hub shaft designs clamping hub tapered hub conical clamping ring expanding shaft radial set screw R W metal bellows couplings must be used in accordance with the technical data in the catalog Subsequent modification of the coupling is not recommended and will void the warranty Mounting preparation When mounting and dismounting the bellows may only be deformed 1 5x the maximum permissible misalignment values specified in the catalog It is important to avoid any excessive force when mounting the coupling All mounting surfaces including shafts keys bores and keyways must be clean and free of burrs nicks and dents Inspect shaft diameters coupling bore diameters key keyway dimensions and tolerances All R W coupling bores are machined to ISO tolerance H7 The expanding shaft of the MK3 is machined to ISO tolerance f7 and the BK7 expanding shaft is machined to ISO tolerance h7 The overall clearance between the hub and shaft is main
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