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1. i in O ring Friction Friction Seals Facings Facing Piston Piston O ring Disc ournal Ball Seals J Bearing a Disc Friction Journal FIGURE 9 Disc 7 FORMNO L 21087 A 0301 CESS Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com PARTS REPLACE MENT NOTE Modular Units must be unmounted and separated into individual components prior to maintenance or repair Make sure you are in the correct section for the size and model of the Modular Unit you are repairing MODULAR INPUT UNIT MIU Models 1125 and 1375 Install this Retaining Ring This Ball Bearing will come out first then press the Ball 0 with the Stub Shaft and is the Bearing onto the Stub Shaft aa Ball Bearing installed in Step 6 See Step 7 FIGURE 10 Refer to Figure 10 WARNING 5 Clean the bore of the Bearing Flange Item 20 with fresh Special attention should be exercised when working solvent making sure all old Loctite residue is removed with retaining rings Always wear safety goggles when working with spring or tension loaded fasteners or 6 Apply an ade
2. 2 Setthe Modular Output Unit M O U onto the M DU making sure the Ball Bearing Item 27 is fully seated into the bore of the MOU 3 Rotate the MOU until the four clearance holes are aligned with the four M DU tapped holes 4 Press the MOU down against the Compression S pring Item 14 until the faces of both units are flush WARNING Never substitute Hex Head Cap Screws for the Socket Head Cap Screws Item 31 NOTE Make sure the air inlet ports are properly aligned for your mounting requirements 5 Using the four Socket Head Cap Screws Item 31 secure the MOU to the MDU 6 Alternately and evenly tighten the four Socket Head Cap Screws Item 31 to 50 ft lb 69 Nm torque MODULAR INPUT CLUTCH BRAKE MIDB Refer to Figure 4 NOTE The Modular Drive Unit MDU Ball Bearing Item 27 is loose fitting by design Do notallow this Ball Bearing to fall off the MDU 1 Place the Modular Drive Unit MDU ona table with the B all Bearing Item 27 facing up and properly seated against the Retaining Ring on Model 1375 oragainst the Hub on Model 1125 2 Setthe Modular Brake Unit MBU onto the M DU making sure the B all Bearing Item 27 is fully seated into the bore of the MBU 3 Rotate the MBU until the four clearance holes are aligned with the four MDU tapped holes 4 Press the MBU down against the C ompression S pring Item 14 until the faces of both units are flush WARNING Never substitute Hex
3. operating Modular Units See Figure 7 Each Modular Unit is provided with a Housing Guard After combining the Modular Units install the Housing G uard so one of the ribs of the Modular Unit housing is directly beneath the clamp on the Housing Guard Waterproof guards are also available Purchase waterproof guards from your local Nexen Distributor FIGURE 7 HOUSING GUARD MOUNTING MODULAR UNITS ONTO MOUNTING FEET U SHAPED MOUNTING FOOT 1 Depending upon the desired air inlet orientation remove two Hex Head Jam Nuts Bolts and Lock Washers from the Modular Input Unit 2 Set the Modular Unit onto the U Shaped Mounting Foot See Figure 8 FIGURE 8 U SHAPED FOOT MOUNT 3 Secure the Modular Input Unit to the U Shaped Mounting Foot using the Hex Head Bolts supplied with the Mounting Foot See Figure 8 5 FORMNO L 21087 A 0301 LUBRICATION NOTE BESS Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 SS DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com Pneumatically actuated devices require clean pressure regulated and lubricated air for maximum performance and long life The most effective and economical way to lubricate Nexen Clutches and Brakes is with an Air Line Lubricator which injects oil into the pressurized air forcing an oil mist into the air chamber Locate the lubricator above and within ten feet of the Clutch or Brake and use a low viscosity oil such as SAE 10 Syntheti
4. secure the MIU to the Motor Adaptor Assembly Alternately and evenly tighten the four Hex Head Jam Nuts Item 45 to 20 ft lb 27 Nm torque FORM NO L 21087 A 0301 MEX 55 53 63 23 31 MTY 81 83 54 10 18 INDUSTRIAL QE DIST AUTORIZADO QRO 442 1 95 72 60 _ventas industrialmagza com CONNECTING UNITS TO FORM COMBINATIONS continued MODELS 1125 AND 1375 TO A MOTOR 1 Remove the six Machine Screws Item 25 that secure the Friction Facing Item 9 to the Disc J ournal Item 8 and save the Machine Screws and Friction Facing as spare parts See Figure 5 2 Place the Motor Adaptor Assembly Product No 937000 on the mounting surface of the Modular Unit S ee Figure 6 3 Using the fourS ocket Head C ap S crews Item 31 secure Motor Adaptor Assembly to the Modular Unit S ee Figure 6 4 Alternately and evenly tighten the four Socket Head Cap Screws Item 31 to 50 ft lb 69 Nm torque See Figure 6 5 Place the Key Item 19 into the motor shaft then slide the motor shaft into the Modular Unit See Figure 6 6 Rotate the Modular Unit until the holes in the Modular Unit are aligned with the tapped holes in the motor then using the four H ex Head C ap S crews Item 33 and Lock Washers Item 24 secure the motor to the Modular Unit S ee Figure 6 7 Alternately and evenly tighten the four Hex Head C ap Screws to 20 ft lb 27 Nm torque ALL MODELS AND MOTOR TO A REDUCER CAUTION When mounting
5. Item 35 continued FORM NO L 21087 A 0301 8 INDUSTRIAL PARTS REPLACEMENT continued MODULAR DRIVE UNIT MDU FIGURE 11 Model 1125 Refer to Figure 11 1 Remove the old Ball Bearing Item 27 10 WARNING 11 Special attention should be exercised when working with retaining rings Always wear safety goggles when working with spring or tension loaded fasteners or devices 12 2 Remove the Retaining Ring Item 36 from the Hub 13 3 Slide the Hub Item 6 Compression Spring Item 14 Spring Back Up Washer Item 52 S pring Retainer Washer Item 16 and Retaining Ring Item 34 out of the Friction 14 Disc Item 7 4 Press the Piston Item 4 Friction Disc Item 7 and Ball Bearing Item 26 out of the Housing Item 1 15 5 Remove the old O ring Seals Items 41 and 43 from the Piston Item 4 and Housing Item 1 16 6 Remove the Retaining Ring Item 37 from the Friction Disc Item 7 then using a bearing puller remove the Piston Item 4 and old Ball Bearing Item 26 from the Friction Disc 17 Item 7 7 Remove the Retaining Ring Item 40 from the Piston Item 4 and press the old Ball Bearing Item 26 out of the Piston 18 8 Clean the bearing bore of the Piston Item 4 with fresh solvent making sure all old Loctite residue is removed 19 9 Apply an adequate amount of Loctite 680 to evenly coat the outer race of the new Ball Bearing Item 26 and press 20 the new Ball Bearin
6. Nut Item 56 and Keyed Washer from the Housing Item 2 2 Fully support the Housing Item 2 and press the Disc J ournal 14 Press the old Ball Bearing Item 29 out of the Housing Item 8 out of the Housing Item 2 WARNING 15 Clean the Bearing Bore of the Housing Item 2 with fresh The four Socket Head Shoulder Screws Item 53 are solvent making sure all old Loctite residue is removed spring loaded Always wear safety goggles when working on spring or tension loaded fasteners or devices 16 Apply an adequate amount of Loctite 680 to evenly coat the outer race of the new Ball Bearing Item 29 and press 3 Alternately and evenly remove the four S ocket Head Shoulder the new Ball Bearing into the Housing Item 2 Screws Item 53 and Compression Springs Item 15 17 Reinstall the S pacer Item 12 and the Retaining Ring Item 4 Slide the Piston Item 5 out of the Housing Item 2 39 5 Remove the old O ring Seals Items 42 and 44 from the 18 Apply an adequate amount of Loctite 680 to evenly coat Piston Item 5 the outer race of the new Ball Bearing Item 28 and press the new Ball Bearing into the Housing Item 2 6 Remove the sixold Flat Head Screws Item 25 securing the old Friction Facing Item 9 to the Piston Item 5 and remove 19 Lubricate the new O ring Seals Items 42 and 44 and the the old Friction Facing See Figure 18 o ring contact surfaces of the Housing Item 2 and Piston Item 5 with a thin film of fresh
7. See Step 2 FIGURE 12 Model 1375 Refer to Figure 12 1 Remove the old Ball Bearing Item 27 WARNING Special attention should be exercised when working with retaining rings Always wear safety goggles when working with spring or tension loaded fasteners or devices 2 Remove the Retaining Ring Item 36 from the Hub Item6 3 Slide the Hub Item 6 Compression Spring Item 14 Spring Retainer Washer Item 16 and second Retaining Ring Item 36 out of the Friction Disc Item 7 4 Press the Piston Item 4 Friction Disc Item 7 Retaining Ring Item 40 and Ball Bearing Item 26 out of the Housing Item 1 5 Remove the old O ring Seals Items 41 and 43 from the Piston Item 4 and Housing Item 1 6 Remove the Retaining Ring Item 37 from the Friction Disc Item 7 then using a bearing puller remove the Piston Item 4 and old Ball Bearing Item 26 from the Friction Disc Item 7 7 Remove the Retaining Ring Item 40 from the Piston Item 4 and press the old Ball Bearing Item 26 out of the Piston 8 Clean the bearing bore of the Piston Item 4 with fresh solvent making sure all old Loctite residue is removed 9 Apply an adequate amount of Loctite 680 to evenly coat the outer race of the new Ball Bearing Item 26 and press continued FORM NO L 21087 A 0301 10 AA Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza c
8. The parties expressly agree that the price for the Products and the services was determined in consideration of the limitation on damages set forth herein and such limitation has been specifically bargained for and constitutes an agreed allocation of risk which shall survive the determination of any court of compe tent jurisdiction that any remedy herein fails of its essential purpose Limitation of Damages In no event shall Nexen be liable for any consequential indirect incidental or special damages of any nature whatso ever including without limitation lost profits arising from the sale or use of the Products Warranty Claim Procedures To make a claim under this warranty the claimant must give written notice of the alleged defect to whom the Product was purchased from and deliver the Product to same within one year of the date on which the alleged defect first became apparent ne gt lt en Nexen G roup Inc 800 843 7445 560 Oak Grove Parkway Fax 651 286 1099 Vadnais Heights MN 55127 www nexengroup com ISO 9001 Certified 19 FORM NO L 21087 A 0301
9. o ring lubricant 7 Using six new Flat Head Screws Item 25 secure a new Friction Facing Item 9 to the Piston Item 5 20 Reinstall the new O ring Seals Items 42 and 44 onto the Piston Item 5 and slide the Piston into the Housing 8 Tighten the six flat Head S crews to 22 in lb 2 50 Nm torque 21 Slide a Compression S pring Item 15 onto each of the four 9 Remove the six old Flat Head Screws Item 25 securing the Socket Head Shoulder Screws Item 53 and secure the old Friction Facing Item 9 to the Disc Journal Item 8 and Piston Item 5 to the Housing Item 2 remove the old Friction Facing 22 Alternately and evenly tighten the Socket Head Shoulder 10 Using six new Flat Head Screws Item 25 secure a new Screws Item 53 to 23 ft lb 31 Nm torque Friction Facing Item 9 to the Disc Journal Item 8 23 Supporting the inner race of the new Ball Bearing Item 28 11 Tighten the six Flat Head Screws to 22 in lb 2 50 Nm and press the Disc Journal Item 8 into the Ball Bearings torque Items 28 and 29 and Housing Item 2 12 Using a bearing puller remove the old Ball Bearing Item 28 24 Slide a new Keyed Washer Item 55 onto the Disc Journal from the Housing Item 2 Item 8 and reinstall the Lock Nut Item 56 WARNING 25 Bend down the tabs of the new Keyed Washer Item 55 to Special attention should be exercised when working with retaining rings Always wear safety goggles when working with spring or tens
10. table with the B all Bearing Item 27 facing up and properly seated against the Retaining Ring on Model 1375 or the Hub on Model 1125 Setthe Modular O utput Unit MO U onto the M DU making sure the B all Bearing Item 27 is fully seated into the bore of the MOU Rotate the MOU until the four clearance holes are aligned with the four MDU tapped holes Press the MOU down against the Compression S pring Item 14 until faces of both units are flush WARNING Never substitute Hex Head Cap Screws for the Socket Head Cap Screws Item 31 NOTE Make sure the air inlet ports are properly aligned for your mounting requirements MODULAR CLUTCH BRAKE MDB Refer to Figure 2 NOTE The Modular Drive Unit MDU Ball Bearing Item 27 is loose fitting by design Do notallow this Ball Bearing to fall off the MDU Place the Modular Drive Unit MDU ona table with the B all Bearing Item 27 facing up and properly seated against the Retaining Ring on Model 1375 oragainst the Hub on Model 1125 Set the Modular Brake Unit MBU onto the MDU making sure the B all Bearing Item 27 is fully seated into the bore of the MBU Rotate the MBU until the four clearance holes are aligned with the four tapped holes in the MDU Press the MB U down against the C ompression S pring Item 14 until the faces of both units are flush MEX 55 53 63 23 31 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ven
11. GEES Naaza M MEX 55 53 63 2331 MTY 81 83 54 10 18 QE DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com AIR CHAMP PRODUCTS User Manual ne gt lt en lt p Modular Units MDU MOU MBU and MIU Modular Combinations MDO MDB MIDO MIDB and MIB Models 1125 amp 1375 i FORM NO L 21087 A 0301 CESS Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com In accordance with Nexen s established policy of constant product improvement the specifications contained in this manual are subject to change without notice Technical data listed in this manual are based on the latest information available at the time of printing and are also subject to change without notice Technical Support 800 843 7445 651 484 5900 Wwww nexengroup com DANGER Read this manual carefully before installation and operation Follow Nexen s instructions and integrate this unit into your system with care This unit should be installed operated and maintained by qualified personnel ONLY Improper installation can damage your system or cause injury or death Comply with all applicable codes Nexen Group Inc 560 Oak Grove Parkway Vadnais Heights Minnesota 55127 ISO 9001 Certified Copyright 1999 Nexen Group Inc ii CESS Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com Table
12. Head Cap Screws for the Socket Head Cap Screws Item 31 Ball Bearing Modular Item 27 Input Unit Modular Modular Drive Unit Output Unit Compression Spring Hex Head Jam Item 14 Nut Item 45 Hex Head Socket Head Cap Screws Cap Screws Item 33 and Item 31 Lock Washers Item 24 7 Place the Key Item 19 into the shaft of the Modular Input Unit MIU then slide the MIU shaft into the MDU 8 Using the four Hex Head Jam Nuts Item 45 Hex Head Cap Screws Item 33 and Lock Washers Item 24 secure the MIU to the MDU 9 Alternately and evenly tighten the four Hex Head Jam Nuts Item 45 to 20 ft lb 27 Nm torque Ball Bearing Modular Item 27 Input Unit Modular Modular Drive Unit Brake Unit Compression Spring Hex Head Jam Item 14 Nut Item 45 Hex Head Socket Head Cap Screws Cap Screws Item 33 and Item 31 Lock Washers Item 24 FIGURE 4 continued FORM NO L 21087 A 0301 2 INDUSTRIAL DIST AUTORIZADO MEX 55 53 63 23 31 MTY 81 83 54 10 18 QRO 442 1 95 72 60__ventas industrialmagza com CONNECTING UNITS TO FORM COMBINATIONS continued NOTE Make sure the air inlet ports are properly aligned for your mounting requirements 5 Using the four Socket Head Cap Screws Item 31 secure the MBU to the MDU See Figure 4 6 Alternately and evenly tighten the four Socket Head Cap Screws Item 31 to 50 ft lb 69 Nm torque See Figure 4 MODULAR INPUT BRAKE M
13. IB Motor Adaptor Assembly an 9 Modular Input ae Hex Head Jam Nut Item 45 Hex Head Cap Screws Item 33 and Lock Washers Item 24 FIGURE 5 Models 1125 and 1375 Refer to Figure 5 1 Remove the six Machine Screws Item 25 that secure the Friction Facing Item 9 to the Disc J ournal Item 8 and save the Machine Screws and Friction Facing as spare parts 2 Place the Motor Adaptor Assembly Product No 937000 on the mounting surface of the Modular Brake Unit M B U 3 Using the four Socket Head Cap Screws Item 31 secure the MBU to the Motor Adaptor Assembly 4 Alternately and evenly tighten the four Socket Head Cap Screws Item 31 and to 50 ft lb 69 Nm torque continued Machine Screw Item 25 Place the Key Item 19 into the shaft of the Modular Input Unit MIU Slide the MIU shaft into MDU See Figure 4 Using the four Hex Head Jam Nuts Item 45 Hex Head Cap Screws Item 33 and Lock Washers Item 24 secure the MIU to the MDU See Figure 4 Alternately and evenly tighten the four Hex Head Jam Nuts Item 45 to 20 ft lb 27 Nm torque See Figure 4 Friction Facing Modular Pan Unit Socket Head Cap Screws Item 31 Place the Key Item 19 into the shaft of the Modular Input Unit MIU then slide the MIU shaft into the MBU and Motor Adaptor Assembly Using the four Hex Head Jam Nuts Item 45 Hex Head Cap Screws Item 33 and Lock Washers Item 24
14. c lubricants are not recommended LUBRICATOR DRIP RATE SETTINGS NOTE These settings are for Nexen supplied lubricators If you are not using a Horton lubricator calibration must replicate the following procedure 1 Close and disconnect the air line from the unit 2 Turn the Lubricator Adjustment Knob counterclockwise three complete turns 3 Open the airline 4 Close the air line to the unit when a drop of oil forms in the Lubricator Sight Gage AIR CONNECTIONS NOTE For quick response Nexen recommends a quick exhaust valve and short air lines between the Control Valves and the Modular Units Align the air inlet ports to a down position to allow condensation to drain out of the the air chambers of the Modular Units Adjust the air pressure to approximately 50 psi 3 45 bar when the Modular Unit is installed between a motor and gear reducer FORM NO L 21087 A 0301 5 Connect the air line to the unit 6 Turn the Lubricator Adjustment Knob clockwise until closed 7 Turn the Lubricator Adjustment Knob counterclockwise one third turn 8 Open the air line to the unit W hen the Modular Unit is mounted using sheaves or sprockets the air pressure may be regulated between 10 psi 0 7 bar to 80 psi 5 5 bar to ensure air pressure is adequate for torque requirements CAUTION Low air pressure will cause slippage and overheating Excessive air pressure will cause abrupt starts and stops reducing Modula
15. g into the Piston Item 4 continued DIST AUTORIZADO MEX 55 53 63 23 31 MTY 81 83 54 10 18 Reinstall the Retaining Ring Item 40 Support the inner race of the new Ball Bearing Item 26 then press the Friction Disc Item 7 into the Piston Item 4 and new Ball Bearing Item 26 Reinstall the Retaining Ring Item 37 Lubricate the new O ring Seals Items 41 and 43 and the o ring contact surfaces of the Piston Item 4 and Housing Item 1 with a thin film of fresh o ring lubricant Install the new O ring Seals Items 41 and 43 then slide the Piston Item 4 and Friction Disc Item 7 into the Housing Item 1 Remove the Retaining Ring Item 34 Spring Retainer Washer Item 16 and the Compression Spring Item 14 from the Hub Item 6 Inspect the C ompression S pring Item 14 for signs of fatigue and replace it if necessary S lide the Compression S pring Item 14 and Spring Retainer Washer Item 16 onto the Hub Item 6 then reinstall the Retaining Ring Item 34 Apply a thin film of Never S eez to the splines of the Hub Item 6 then slide the Hub and Compression S pring Item 14 into the Friction Disc Item 7 Reinstall the Retaining Ring Item 36 Slide a new Ball Bearing Item 27 onto the Hub Item 6 FORM NO L 21087 A 0301 QRO 442 1 95 72 60 _ventas industrialmagza com PARTS REPLACEMENT continued MODULAR DRIVE UNIT MDU Remove this Retaining Ring first
16. h it was intended and d Buyer has given written notice of the alleged defect to Nexen and delivered the allegedly defective Product to Nexen within one year of the date of shipment Exclusive Remedy The exclusive remedy of the Buyer for any breach of the warranties set out above will be at the sole discretion of Nexen a repair or replacement with new serviceably used or reconditioned Product or issuance of credit in the amount of the purchase price paid to Nexen by the Buyer for the Products Limitation of Nexen s Liability TO THE EXTENT PERMITTED BY LAW NEXEN SHALL HAVE NO LIABILITY TO BUYER OR ANY OTHER PERSON FOR INCIDENTAL DAMAGES SPECIAL DAMAGES CONSEQUENTIAL DAMAGES OR OTHER DAMAGES OF ANY KIND OR NATURE WHATSOEVER WHETHER ARISING OUT OF BREACH OF WARRANTY OR OTHER BREACH OF CONTRACT NEGLIGENCE OR OTHER TORT OR OTHERWISE EVEN IF NEXEN SHALL HAVE BEEN ADVISED OF THE POSSIBILITY OR LIKELIHOOD OF SUCH POTENTIAL LOSS OR DAMAGE Forall of the purposes hereof the term consequential damages shall include lost profits penalties delay images liquidated damages or other damages and liabilities which Buyer shall be obligated to pay or which Buyer may incur based upon related to or arising out of its contracts with its customers or other third parties In no event shall Nexen be liable for any amount of damages in excess of amounts paid by Buyer for Products or services as to which a breach of contract has been determined to exist
17. haft Retaining Ring Ext 19 Key Hex Head Jam Nut Not Shown 20 Bearing Flange Retaining Ring Int 30 Ball Bearing 1 Denotes Repair Kit item MIU 1125 and 1375 Repair Kit No 937100 continued 13 FORM NO L 21087 A 0301 CESS Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com PARTS LIST continued MODULAR DRIVE UNIT MDU FIGURE 16 MODEL 1125 ITEM DESCRIPTION 1 1 Housing Piston Hub Friction Disc Pilot Shaft Compression Spring S pring Retainer Washer Key Not Shown Slotted Spring Pin Lock Washer Ball B earing Ball B earing Hex Head Cap Screw Retaining Ring Ext Retaining Ring Ext Retaining Ring Ext Retaining Ring Int O ring Seal O ring Seal Housing Guard Back Up Washer PIP PRP RRP BP PBR RP RPIP RP RIP RP 1Denotes Repair Kit item MDU 1125 Repair Kit No 937200 continued FORMNO L 21087 A 0301 14 CESS Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com PARTS LIST continued MODULAR DRIVE UNIT MDU FIGURE 17 MODEL 1375 Housing Ball Bearing Piston Hub Friction Disc Pilot Shaft Compression Spring S pring Retainer W asher Key Not Shown Lock Washer Ball Bearing Hex Head Cap Screw Retaining Ring Ext Retaining Ring Ext Retaining Ring Ext Retaining Ring Int O ring Seal O ring Seal Housi
18. ion loaded fasteners or devices continued lock the Lock Nut Item 56 FORM NO L 21087 A 0301 GES Naacza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com PARTS REPLACEMENT continued MODULAR OUTPUT UNIT MOU FIGURE 14 Models 1125 and 1375 Refer to Figure 14 1 Bend back the tabs on the old Keyed Washer Item 55 and 8 Tighten the six flat H ead S crews to 22 in lb 2 50 Nm torque remove the Lock Nut Item 56 and Keyed Washer 9 Clean the Bearing Bore of the Housing Item 3 with fresh 2 Fullysupport the Housing Item 3 and press the Disc J ournal solvent making sure all old Loctite residue is removed Item 8 out of the Housing 10 Apply an adequate amount of Loctite 680 to evenly coat 3 Using a bearing puller remove the old Ball Bearing Item 28 the outer race of the new Ball Bearing Item 29 and press from the Housing Item 3 the new Ball Bearing into the Housing Item 3 WARNING 11 Reinstall the Spacer Item 12 and the Retaining Ring Special attention should be exercised when working Item 39 with retaining rings Always wear safety goggles when working with spring or tension loaded fasteners or 12 Apply an adequate amount of Loctite 680 to evenly coat devices the outer race of the new Ball Bearing Item 28 and press the new Ball Bearing into the Housing Item 3 4 Remove the Spacer Item 12 and Retaining Ring Ite
19. m 39 from the Housing Item 3 13 Support the inner race of the new Ball Bearing Item 28 and press the Disc Journal Item 8 into the Ball Bearings Items 5 Press the old Ball Bearing Item 29 out of the Housing 28 and 29 and Housing Item 3 Item 3 14 Slide a new Keyed Washer Item 55 onto the Disc Journal 6 Remove the six old Flat Head Screws Item 25 securing the Item 8 and reinstall the Lock Nut Item 56 old Friction Facing Item 9 to the Disc J ournal Item 8 and remove the old Friction Facing 15 Bend down the tabs of the Keyed Washer Item 55 to lock the Lock Nut Item 56 7 Using six new Flat Head Screws Item 25 secure a new l Friction Facing Item 9 to the Disc Journal Item 8 REPLACEMENT PARTS The item or balloon number for all Nexen products is used for W hen ordering replacement parts specify model designation part identification on all product parts lists product price lists item number part description and quantity Purchase replacement unit assembly drawings bills of materials and instruction manuals parts through your local Nexen Distributor FORM NO L 21087 A 0301 12 CESS Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com PARTS LIST NOTE Make sure you are in the correct section for the size and model of your Modular Unit MODULAR INPUT UNIT MIU FIGURE 15 MODELS 1125 amp 1375 11 Stub S
20. ng Guard PRP RIP RPP BP PIB RP RPIP RP RIP RP 1 Denotes Repair Kit item MDU 1375 Repair Kit No 937500 continued 15 FORM NO L 21087 A 0301 PARTS LIST continued MODULAR BRAKE UNIT MBU FIGURE 18 MODELS 1125 AND 1375 ITEM DESCRIPTION 2 1 Housing Piston Disc Journal INDUSTRIAL 31 Socket Head Cap Screw Retaining Ring O ring Seal Friction Facing Spacer Compression Spring O ring Seal Housing Guard Socket Head Shoulder Screw Key Flat Head Screw Ball Bearing 1Denotes Repair Kit item MBU 1125 Repair Kit No 937300 MBU 1375 Repair Kit No 937600 2 Denotes Friction Facing Kit item MBU 1125 Friction Facing Kit No 930277 MBU 1375 Friction Facing Kit No 930278 Keyed Washer Lock Nut Ball Bearing PrPRPIB RP RIP PrP B amp continued FORM NO L 21087 A 0301 MEX 55 53 63 23 31 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60_ ventas industrialmagza com PARTS LIST continued MODULAR OUTPUT UNIT MOU FIGURE 19 MODEL 1125 AND 1375 3 1 Housing Disc Journal Friction Facing INDUSTRIAL MEX 55 53 63 23 31 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com DESCRIPTION Ball Bearing Socket Head Cap Screw Retaining Ring Int Spacer Key Flat Head Screw Ball Bearing 1 Denotes Repair Kit item MOU 1125 and 1375 Repair Kit No 937400 2 Denotes Friction Facing Kit i
21. of Contents Connecting Units to Form Combinations 1 Housing Guard Installation 5 Mounting Modular Units onto Mounting Feet 5 Lubricati N iiaia 6 Air CONNECt IONS 6 Troubleshooting 7 Parts Replacement 8 Replacement Parts 12 Parts List 13 Warranty 19 iii INDUSTRIAL CONNECTING UNITS TO FORM COMBINATIONS MODULAR CLUTCH MDO Refer to Figure 1 NOTE The Modular Drive Unit MDU Ball Bearing Item 27 is loose fitting by design Do notallow this Ball Bearing to fall off the MDU Place the Modular Drive Unit M DU ona
22. om 10 T1 12 13 14 15 16 17 18 the new Ball B earing into the Piston Item 4 Reinstall the Retaining Ring Item 40 Support the inner race of the new Ball Bearing Item 26 then press the Friction Disc Item 7 into the Piston Item 4 and new Ball B earing Item 26 Reinstall the Retaining Ring Item 37 Lubricate the new O ring Seals Items 41 and 43 and the o ring contact surfaces of the Piston Item 4 and Housing Item 1 with a thin film of fresh o ring lubricant Install the new O ring Seals Items 41 and 43 then slide the Piston Item 4 and Friction Disc Item 7 into the Housing Item 1 Inspect the C ompression S pring Item 14 for signs of fatigue and replace it if necessary Apply a thin film of Never S eez to the splines of the Hub Item 6 then slide the Hub Compression S pring Item 14 and Retaining Ring Item 36 into the Friction Disc Item 7 Reinstall the Retaining Ring Item 36 removed from the Hub Item 6 in Step 2 Slide a new Ball Bearing Item 27 onto the Hub Item 6 MEX 55 53 63 23 31 MTY 81 83 54 10 18 QRO 442 1 95 72 60 _ventas industrialmagza com INDUSTRIAL DIST AUTORIZADO PARTS REPLACEMENT continued MODULAR BRAKE UNIT MBU 15 Models 1125 and 1375 Refer to Figure 13 1 Bend back the tabs on the old Keyed Washer Item 55 and 13 Remove the S pacer Item 12 and Retaining Ring Item 39 remove the Lock
23. quate amount of Loctite 680 to evenly coat devices the outer race of the first new Ball Bearing Item 30 then press this Ball Bearing into the Bearing Flange Item 20 1 Remove both Retaining Rings Item 35 until it is seated against the Retaining Ring Item 58 2 With face of Bearing Flange the side without ribs Item 20 7 Reinstall the first Retaining Ring Item 35 on Stub Shaft facing down and fully supported press Stub S haft Item 11 Item 11 down and out of the Bearing Flange 8 Fully support the inner bearing race of the second new Ball NOTE Bearing Item 30 and press it onto the S tub S haft Item 11 One Ball Bearing Item 30 will come out with the Stub until it is seated against the Retaining Ring Item 35 Shaft Item 11 9 Applyan adequate amount of Loctite 680 to evenly coatthe 3 Remove the first old Ball Bearing Item 30 from Stub S haft outer race of the second new Ball Bearing Item 30 Item 11 10 Supporting the inner race of the Ball Bearing located in the NOTE Bearing Flange Item 20 press the second new Ball Bearing Do not remove the two Retaining Rings Item 58 Item 30 and Stub Shaft Item 11 into the Bearing Flange from the Bearing Flange Item 20 See Figure 10 and Ball B earing until the second new Ball Bearing is seated against the Retaining Ring Item 58 4 Press the second old Ball Bearing Item 30 out of the Bearing Flange Item 20 11 Reinstall the second Retaining Ring
24. r Unit life BESS Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 NS DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com TROUBLESHOOTING MODEL SYMPTOM PROBABLE CAUSE SOLUTION MIU Modular Input Unit Damaged Ball Bearings Replace the Ball Bearings Leaking O ring Seals Replace the O ring Seals Lubricate the Hub spline with Failure to Never Seez engage Damaged Ball Bearings Replace the Ball Bearings Improper air pressure settings or faulty Adjust the air pressure setting or Lubricate the Hub spline with Failure to Never Seez disengage Replace the Ball Bearings Replace he Spina Replace the O ring Seals Replace the Ball Bearings Failure to z engage Improper air pressure settings or faulty Adjust the air pressure setting or i controls replace the controls MBU Modular Brake Unit Worn or contaminated Friction Facings Replace the Friction Facings Eiren Lack of lubrication on the Hub spline me ia spline with ailure to disengage Damaged Ball Bearings Replace the Ball Bearings Broken or damaged Springs Replace the Springs Fail Damaged Ball Bearings Replace the Ball Bearings MOU Modular Output Unit Failure to engage Worn or contaminated Friction Facings Replace the Friction Facings Lack of lubrication on the Hub spline Lack of lubrication on the Hub spline Compression Bearings Ball Bearings
25. sheaves or sprockets refer to Table 1 for overhung load data Exceeding the data in Table 1 will result in premature failure to the Modular Unit 1 Place the Key Item 19 into the output shaft of the Modular Unit and slide the output shaft of the Modular Unit and motor into the reducer 2 Rotate the Modular Unit and motor until the holes in the Modular Unit are aligned with the holes in the reducer flange and the air inlet ports of the Modular Unit are facing down 3 Using fourHex Head C ap Screws secure the Modular Unit and motor to the reducer 4 Alternately and evenly tighten the four Hex Head Cap Screws making sure the Modular Unit and reducer faces are flush with each other Key Motor Adaptor Assembly Item 19 Modular Lock Washer Item 24 Hex Head Cap Screw Item 33 Socket Head Cap Screw FIGURE 6 Item 31 TABLE 1 OVERHUNG LOAD DATA Load 1 25 4 mm from Pilot MODEL Face 1200 544 Lbs 610 Lbs 1800 636 Lbs 700 Lbs 610 Lbs 700 Lbs 1200 544 Lbs 1800 636 Lbs 1200 570 Lbs 1800 655 Lbs Based on 10 000 hrs average life and using 50 psi air 570 Lbs 655 Lbs continued FORM NO L 21087 A 0301 CESS Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com CONNECTING UNITS TO FORM COMBINATIONS continued HOUSING GUARD INSTALLATION WARNING Always have the Housing Guard in place when
26. tas industrialmagza com Modular Output Unit Modular Drive Unit Compression Spring Item 14 Socket Head Cap Screw Item 31 Ball Bearing Item 27 FIGURE 1 Using the four Socket Head Cap Screws Item 31 secure the MOU to the MDU Alternately and evenly tighten the four Socket Head Cap Screws Item 31 to 50 ft lb 69 Nm torque Modular Drive Unit Modular Brake Unit Compression Spring Item 14 Socket Head Cap Screw Item 31 Ball Bearing Item 27 FIGURE 2 NOTE Make sure the air inlet ports are properly aligned for your MBU mounting requirements WARNING 5 Never substitute Hex Head Cap Screws for the Socket Head Cap Screws Item 31 6 Using the four Socket Head Cap Screws Item 31 secure the MBU to the MDU Alternately and evenly tighten the four Socket Head Cap Screws Item 31 to 50 ft lb 69 Nm torque FORM NO L 21087 A 0301 CESS Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com CONNECTING UNITS TO FORM COMBINATIONS continued MODULAR INPUT CLUTCH MIDO Refer to Figure 3 NOTE The Modular Drive Unit MDU Ball Bearing Item 27 is loose fitting by design Do not allow this Ball Bearing to fall off the MDU 1 Place the Modular Drive Unit M DU ona table with the B all Bearing Item 27 facing up and properly seated against the Retaining Ring on Model 1375 oragainst the Hub on Model 1125
27. tem MBU 1125 and 1375 Friction Facing Kit No 930277 17 Housing Guard Keyed Washer Lock Nut FORM NO L 21087 A 0301 CESS Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com ACCESSORIES MODULAR HOUSING GUARDS PRODUCT TYPE MODELS NUMBER Ring Guard All 1125 and 1375 935900 counterclockwise MBU 1125 and 1375 935902 Waterproof Guard Not Shown MDU 1125 and 1375 935901 FIGURE 20 HOUSING GUARD MODULAR FOOT MOUNTS PRODUCT TYPE MODELS NUMBER U Shaped Foot Mount All 1125 and 1375 936900 FIGURE 21 U SHAPED FOOT MOUNT FORM NO L 21087 A 0301 18 CESS Naaza MEX 55 53 63 2331 MTY 81 83 54 10 18 DIST AUTORIZADO QRO 442 1 95 72 60 ventas industrialmagza com WARRANTY Warranties Nexen warrants that the Products will be free from any defects in material or workmanship for a period of 12 months from the date of shipment NEXEN MAKES NO OTHER WARRANTY EXPRESS OR IMPLIED AND ALL IMPLIED WARRANTIES INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT NESS FORA PARTICULAR PURPOSE ARE HEREBY DISCLAIMED This warranty applies only if a the Product has been installed used and maintained in accordance with any applicable Nexen installation or maintenance manual for the Product b the alleged defect is not attributable to normal wear and tear c the Product has not been altered misused or used for purposes other than those for whic

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