BW Clutch or Brake Sheave, Pilot and Coupling Mount
Contents
1. 9 7 WARRANTY Warranties Nexen warrants that the Products will a be free from any defects in material or workmanship for a period of 12 months from the date of shipment and b will meet and perform in accordance with the specifications in any engineering drawing specifically for the Product that is in Nexen s current product catalogue or that is accessible at the Nexen website or that is attached to this Quotation and that specifically refers to this Quotation by its number subject in all cases to any limitations and exclusions set out in the drawing NEXEN MAKES NO OTHER WARRANTY EXPRESS OR IMPLIED AND ALL IMPLIED WARRANTIES INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 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 which 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 for the Buyer for any breach of any warranties provided in connection with this agreement will be at the election of Nexen a repair or re2. e new Thrust Bearing Item 8 into place Clean the O ring contact surfaces of the Air Chamber and Piston with fresh safety solvent Coat the O ring contact surfaces of the Air Chamber and Piston with fresh O ring lubricant and wipe off any excess lubricant Coat the new O ring Seals Items 10 and 11 with fresh O ring Lubricant Install the new O ring Seals Items 10 and 11 Slide the Piston Item 13 into Air Chamber Item 9 Slide the Air Chamber and Piston onto Hub Item 1 Install the new Disc Key Item 6 into the Hub Slide new Friction Disc Assembly Item 7 onto the Hub Item 1 and Disc Key Item 6 NOTE The closed end of the Return Spring Item 5 mustface toward the Retaining Ring Item 2 Install the new Return Spring ltem 5 and Spring Retaining Washers ltem 23 Press the Pilot Mount Disc Item 15 and Bearing Item 3 or the Sheave Item 4 and Bearing Item 3 onto the Hub Item 1 Reinstall the Retaining Ring Item 2 FORM NO L 20002 U 1209 PARTS LIST Pilot Mount Disc Item 15 Sheave Item 4 SHEAVE MOUNT BW CLUTCH BRAKE eee Ext Bearing Sheave Return Spring Disc Key Friction Disc Assembly Thrust Bearing Air Chamber O Ring Seal Large O Ring Seal Small Piston Washer Pilot Mount Disc Air Inlet Fitting Air Hose Assembly Not Shown Set Screw Not Shown 21 Key Not Shown 1 Denotes Repair Kit Item Repair Kit No 846800 FORM NO L 20002 U 120
3. e to a control Check control valve and air pressure valve malfunction or low air pressure setting Defective O ring Seals causing air leaks Replace O ring Seals Lack of lubrication on the Hub spline or in Lubricate the Hub spline with a thin the air chamber film of Never Seez or check air line lubricator settings Rigid pipe or tubing for air line connections Use flexible pipe or tubing for all air line connections Failure to disengage Friction lock due to a lack of lubrication on Lubricate the Hub spline with a thin the Hub spline or in the air chamber film of Never Seez or check air line lubricator settings Broken Return Spring Install a new Return Spring Unexhausted air due to a control valve Check or replace control valve malfunction Excessive drag on the air line Defective Bearings Replace Bearings Air line is not properly supported Rest the air line against a support that is parallel to the center line of the clutch FORM NO L 20002 U 1209 5 PARTS REPLACEMENT REFER TO FIGURE 4 1 2 10 11 12 13 14 15 Remove the Retaining Ring Item 2 Depending on which version of the BW Clutch is being used remove the Pilot Mount Disc Item 15 or the Sheave Item 4 Press the old Bearing Item 3 out of the Sheave or Pilot Mount Disc Clean the bearing bore of the Sheave Item 4 or Pilot Mount Disc Item 15 with fresh solvent making sure all old Loctite residue is r
4. emoved Apply an adequate amount of Loctite RC609 to evenly coat the outer race of new Bearing Item 3 Carefully align the outer race of the new Bearing Item 3 with the bore of the Sheave or Pilot Mount Disc and press the new Bearing Item 3 into place Remove the first old Spring Retaining Washer Item 23 old Return Spring Item 5 and the second old Spring Retaining Washer Item 23 from the Hub Item 1 Slide the old Friction Disc Assembly Item 7 off of the Hub Item 1 Remove the old Disc Key Item 6 Slide the Hub Item 1 out of the Air Chamber Item 9 and Piston Item 13 Separate the Piston Item 13 from the Air Chamber Item 9 Remove the old O ring Seal Item 11 from the Air Chamber Item 9 Press the old Thrust Bearing Item 8 out of the Air Chamber Item 9 Carefully align the outer race of the new Thrust Bearing Item 8 with the bore of the Air Chamber Item 9 and press the new Thrust Bearing Item 8 into place Remove the old O ring Seal Item 10 from the Piston Item 13 20 21 22 23 24 25 26 21 28 Working with spring loaded or tension loaded fasteners and devices can cause injury Wear safety glasses and take the appropriate safety precautions Press the old Thrust Bearing Item 8 out of the Piston Item 13 Carefully align the outer race of the new Thrust Bearing Item 8 with the bore of the Piston Item 13 and press th
5. n 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 competent jurisdiction that any remedy herein fails of its essential purpose Inspection Buyer shall inspect all shipments of Products upon arrival and shall notify Nexen in writing of any shortages or other failures to conform to these terms and conditions which are reasonably discoverable upon arrival without opening any carton or box in which the Products are contained Such notice shall be sent within 14 days following arrival All notifications shall be accompanied by packing slips inspection reports and other documents necessary to support Buyer s claims In addition to the foregoing obligations in the event that Buyer receives Products that Buyer did not order Buyer shall return the erroneously shipped Products to Nexen within thirty 30 days of the date of the invoice for such Products Nexen will pay reasonable freight charges for the timely return of the erroneously shipped Products and issue a credit to Buyer for the returned Products at the price Buyer paid for them including any shipping expenses that Nexen charged Buyer All shortages overages and nonconformities not reported to Nexen as required by this section will be deemed waived Limitation on Actions No action regardless of form arising out of any transaction to
6. nexen AIR CHAMP PRODUCTS User Manual 2929 BW Clutch or Brake Sheave Pilot and Coupling Mount CE o l compliant 2002 95 EC FORM NO L 20002 U 1209 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 www 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 cause injury or death Comply with all applicable codes This document is the original non translated version Conformity Declaration In accordance with Appendix II B of CE Machinery Directive 2006 42 EC A Declaration of Incorporation of Partly Completed Machinery evaluation for the applicable EU directives was carried out for this product in accordance with the Machinery Directive The declaration of incorporation is set out in writing in a separate document and can be requested if required This machinery is incomplete and must not be put into service until the machinery into which it is to be incorpo
7. onto the mounting shaft and Key Align the notch in the Brake Adapter with a torque pin or stop on the machine Insert and tighten the two Set Screws Item 20 BW Clutch e Set Screw Item 20 Mounting Shaft FIGURE 1 Key Item 21 Pilot Mount Mounting BW Clutch Coupling Adapter Q Set Screw Item 20 Set Screw Provided with coupling adapter Cap Screw provided with coupling adapter a FIGURE 2 Key Customer Supplied Notch in Brake Adapter Pilot Mount BW Clutch Brake Adapter pi Shaft a A Key Item 21 Cap Screws provided with Brake Adapter po Screw Item 20 FIGURE 3 FORM NO L 20002 U 1209 LUBRICATION NOTE Nexen pneumatically actuated devices require clean pressure regulated air for maximum performance and Hie All seals in Nexen pneumatically operated devices are lubricated for life and do not require additional ubrication However some customers prefer to use an air line lubricator which injects oil into the pressurized air forcing an oil mist into the air chamber This is acceptable but care must be taken to ensure once an air mist lubrication system is used it is continually used over the life of the product as the oil mist may wash free the factory installed lubrication Locate the lubricator above and within ten feet of the product and use low viscosity oil such as SAE 10 Synthetic lubricants are not recommended Nexen product s bea
8. placement with new serviceably used or reconditioned parts or products or b issuance of credit in the amount of the purchase price paid to Nexen by the Buyer for the Products Agent s Authority Buyer agrees that no agent employee or representative of Nexen has authority to bind Nexen to any affirmation representation or warranty concerning the Products other than those warranties expressly set forth herein Limitation on 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 For all of the purposes hereof the term consequential damages shall include lost profits penalties delay damages 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 The parties expressly agree that the price for the Products and the services was determined i
9. rated has been declared in conformity with the applicable provisions of the Directive Nexen Group Inc 560 Oak Grove Parkway Vadnais Heights Minnesota 55127 ISO 9001 Certified Copyright 2009 Nexen Group Inc FORM NO L 20002 U 1209 ii Table of Contents General Specifications 1 General Safety Precautions A A E a 1 Installation A AAA E AAA Ad 2 Lubrication eee E E A A a 3 Air Connections AAA A A A enana aci 4 Operation O A E A i 5 Troubleshooting A A a 5 Parts IRS plac ML A A A A A Eaa 6 E A E ER E E Y A eae ee aec O A E E ees ea E esas EEES EEC A RSE 8 iii FORM NO L 20002 U 1209 GENERAL SPECIFICATIONS Specifications Up to 11 3 Nm 100 in lbs 1 5 5 bar 14 5 80 psi 5 104 C 0 220 Approximate Weight Up to 1 8 kg 4 lbs GENERAL SAFETY PRECAUTIONS Ensure proper guarding of the product is used Nexen recommends the machine builder design guarding in compliance with OSHA 29 CFR 1910 Occupa tional Safety and Health Hazards Use appropriate guarding for moving components Failure to guard could result in serious bodily injury Watch for sharp features when interacting with this product The parts This product is capable of emitting a have complex shapes and machined spark if misused therefore is not edges recommended for use in any explosive environment The
10. rings are shielded and pre lubricated and require no further lubrication LUBRICATOR DRIP RATE SETTINGS 4 Close the air line to the unit when a drop of oil forms in the Lubricator Sight Gage These settings are for Nexen supplied lubricators If you are not using a Nexen 5 lubricator calibration must follow the manufacturer s suggested procedure Connect the air line to the unit 6 Turn the Lubricator Adjustment Knob clockwise until eos closed 1 Close and disconnect the air line from the unit 7 Turnthe Lubricator Adjustment Knob counterclockwise 2 Turnthe Lubricator Adjustment Knob counterclockwise one third tum three complete turns 8 Open the air line to the unit 3 Open the air line FORM NO L 20002 U 1209 3 AIR CONNECTIONS A 1 8 NPT female Air Inlet Fitting Item 18 is provided in the Piston Item 13 for the air line connection The Air Hose Assembly Item 19 must be used so that no side forces are introduced to the air chamber piston assembly Bearing drag on the hose during operation may be relieved by securing the hose to a support All Nexen pneumatically actuated devices require clean and dry air which meets or exceeds ISO 8573 1 2001 Class 4 4 3 quality NOTE For quick response Nexen recommends a quick exhaust valve and short air lines between the Control Valves and the unit Align the air inlet ports to a down position to allow condensation to drain out of the air chambe
11. rs of the product Low air pressure will cause slippage and overheating Excessive air pressure will cause abrupt starts and stops reducing product life The use of rigid pipe or tubing when connected directly to the BW Clutch will prevent proper actuation of the BW Clutch The following is acommon air supply scheme used with this product This is an example and not an all inclusive list All air circuits to be used with this product must be designed FILTER AIR following EN983 guidelines REGULATOR SUPPLY PRESSURE GAUGE AIR PRESSURE 8 BAR 120 PSI ABSOLUTE MAX O BAR O PSI ABSOLUTE MIN ES 3 WAY N O 3 2 PRESSURIZED QUICK EXHAUST VALVE BRAKE INLET 1 FORM NO L 20002 U 1209 OPERATION Never exceed maximum operating speeds The temperature limits forthis product line listed for your product See Table 1 are 4 5 100 C 40 220 F Ensure proper guarding of the product is Never exceed life of facing material Facing used Nexen recommends the machine life depends on the volume of material and builder design guarding in compliance the total energy over the life of the unit with OSHA 29 CFR 1910 Occupa Expected life in hrs can be found by tional Safety and Health Hazards Time Ye power Wear Rate TABLE 1 3 600 TROUBLESHOOTING SYMPTOM PROBABLE CAUSE SOLUTION Failure to engage Air not getting to the clutch du
12. temperature limits for this product are 4 5 100 C 40 220 F SISSI ey Use appropriate guarding for moving components Failure to guard could result in serious bodily injury FORM NO L 20002 U 1209 1 INSTALLATION SHEAVE AND PILOT MOUNTING REFER TO FIGURE 1 1 Insert the Key Item 21 into the keyway of the mounting shaft Slide the BW Clutch onto the mounting shaft until the Key Item 21 is seated in the BW Clutch Insert and tighten the two Set Screws Item 20 COUPLING MOUNTING REFER TO FIGURE 2 1 Insert the Key Item 21 into the keyway of the mounting shaft Slide the Pilot Mount BW Clutch onto the mounting shaft until the Key Item 21 is seated in the Pilot Mount BW Clutch Insert and tighten the two Set Screws Item 20 Insert the customer supplied key into the coupling shaft Slide the Coupling Adapter onto the coupling shaft Using the Cap Screws provided with the Coupling Adapter secure the Coupling Adaptor to the Pilot Mount BW Clutch Insert and tighten the Set Screws provided with the Coupling Adapter BRAKE MOUNTING REFER TO FIGURE 3 1 Using the Cap Screws provided with the Brake Adapter secure the Brake Adapter to the Pilot Mount BW Clutch Insert the Key Item 21 into the keyway of the mounting shaft Slide the Pilot Mount BW Clutch with the Brake Adapter
13. which these terms and conditions are applicable may be brought by the Buyer more than one year after the cause of action has accrued nexen Nexen Group Inc 800 843 7445 560 Oak Grove Parkway Fax 651 286 1099 Vadnais Heights MN 55127 www nexengroup cor ISO 9001 Certified 8 FORM NO L 20002 U 1209
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