FWB, LWB, MWB, and HWB Brakes 20010
Contents
1. Installation 2 Brake Guard Installation Lubrication 5 5 5 55 5 5 Parts Replacement 1 Replacement arts 50 5 Parts LISt 1 11 1 iii MEX 55 53 63 23 31 MTY 81 83 54 10 18 DIST AUTORIZADO 442 1 95 7260 ventas industrialmagza com INTRODUCTION Read this manual carefully making full use of its explanations and instructions The Know How of safe continuous trouble free operation depends on the degre2. 55 53 63 2331 MTY 81 83 54 10 18 442 1 95 SS dist AUTORIZADO 7260 ventas industrialmagza com AIR CHAMP PRODUCTS User Manual gt 22 Models FWB LWB MWB and HWB Brakes 55 53 63 2331 MTY 81 83 54 10 18 442 1 95 7260 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 S upport 800 843 7445 651 484 5900 WWww nexengroup com WARNING 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 Inc 560 Oak Grove Parkway Vadnais Heights Minnesota 55127 Copyright 2000 Nexen Group Inc 150 9001 Certified ii CES MNaacza MEX 55 53 63 23 31 MTY 81 83 54 10 18 DIST AUTORIZADO 442 1 95 7260 ventas industrialmagza com Table of Contents
3. Model N um ber and required bore size QTY 3 on FWB QTY 6 MWB HWB REPAIR KITS MODEL PRODUCT NO 4 FORM NO L 20010 F 0301 CES MNaacza MEX 55 53 63 23 31 MTY 81 83 54 10 18 DIST AUTORIZADO 442 1 95 7260 ventas industrialmagza com WARRANTIES 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 FITNESS FORA PARTIC ULAR 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 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
4. NT FIGURE 3 WARNING Special attention should be exercised when working with retaining rings or spring loaded fasteners Always wear safety goggles when working with spring or tension loaded fasteners or devices Remove the Retaining Ring Item 13 press the Hub Assembly Item 2 out of the Ball B earing Item 14 and Air C hamber Item 8 See Figure 3 Remove the Retaining Ring Item 12 from the Air Chamber 8 then press the old Ball Bearing 14 out of the Air C hamber S ee Figure 3 Remove the six old Flat Head Machine Screws Item 3 securing the old Friction Facing Item 4 to the Piston Item 5 then remove the Friction 5 6 7 8 4 5 Connect the air line to the unit Turn the Lubricator Adjustment Knob clockwise until closed Turn the Lubricator Adjustment Knob counterclockwise one third turn Open the air line to the unit Facing See Figure 3 NOTE The LWB MWB and HWB have six Shoulder Bolts Item 6 Compression Springs Item 7 and O ring Seals Item 10 The FWB has three Shoulder B olts 6 Compression Springs 7 and O ring Seals 10 Remove the old Shoulder Bolts Item 6 O ring Seals Item 10 and Compression Springs Item 7 from the Piston Item 5 S ee Figure 3 Slide the Piston 5 out of the Air Chamber 8 and remove the O ring Seals Item 9 and 11 from the Piston and Air C ham
5. Piston Item 5 See Figure 3 16 Tighten the six Flat Head Machine Screws Item 3 to 22 In Lbs 2 50 Nem torque 17 While supporting the inner race of the new Ball Bearing 14 press the Hub Assembly Item 2 into the new Ball Bearing and Air Chamber Item 8 See Figure 3 18 Reinstall the Retaining Ring Item 13 See Figure 3 The item or balloon number for all Nexen products is used for part identification on all product parts lists product price lists unit assembly drawings bills of materials and instruction manuals W hen ordering replacement parts specify model designation item number part description and quantity Purchase replacement parts through your local Nexen Distributor ACCESSORIES TORQUE PIN BRACKET PRODUCT NO FWB 819900 817700 BRAKE GUARD PRODUCT NO LW 821400 818300 MWB 823400 826300 HWB 825500 828200 FORM NO L 20010 F 0301 FIGURE 4 TORQUE PIN BRACKET FIGURE 5 BRAKE GUARD CES MNaaza MEX 55 53 63 23 31 MTY 81 83 54 10 18 DIST AUTORIZADO 442 1 95 72 60 ventas industrialmagza com PARTS LIST FIGURE 6 Set Screw Hub Assembly Flat Head Machine S crew Friction Facing Piston Shoulder Bolt Compression 5 pring Air Chamber O ring Seal O ring Seal O ring Seal Retaining Ring Retaining Ring Ball Bearing Key e y 1 Denotes Repair Kit item 2 W hen ordering Bushing 15 state the
6. ber S ee Figure 3 Clean the bearing bore of the Air C hamber Item 8 with fresh solvent making sure all old Loctite FORM NO L 20010 F 0301 CES MNaaza MEX 55 53 63 23 31 MTY 81 83 54 10 18 DIST AUTORIZADO 442 1 95 7260 ventas industrialmagza com 7 Apply an adequate amount of Loctite 680 to evenly coat the outer race of the new Ball Bearing Item 14 and press the new Ball Bearing into the Air Chamber Item 8 See Figure 3 8 Reinstall the Retaining Ring Item 12 See Figure 3 9 Apply a thin film of o ring lubricant to the new O ring Seals Items 9 10 and 11 and the o ring contact surfaces of the Piston Item 5 Air Chamber Item 8 and new Shoulder Bolts Item 6 See Figure 3 10 Install the new O ring Seals Items 9 10 and 11 See Figure 3 11 Slide the Piston into the Air Chamber aligning the holes in the Piston with the holes in the Air Chamber See Figure 3 12 Slide a new Compression Spring Item 7 onto each new Shoulder Bolt Item 6 See Figure 3 REPLACEMENT PARTS 13 Install the new Shoulder Bolts Item 6 Compression Springs Item 7 and O ring Seals Item 10 through the Piston Item 5 and into the Air Chamber Item 8 See Figure 3 14 Alternately and evenly tighten the new Shoulder Bolts Item 6 to 66 In Lbs 7 45 N m torque See Figure 3 15 Using six new Flat Head Machine Screws 3 secure the new Friction Facing Item 4 to the
7. e of your understanding of the system and your willingness to keep all components in proper operating condition Pay particular attention to all NOTES CAUTIONS and WARNINGS to avoid the risk of personal injury or property damage It is important to understand that these NOTES CAUTIONS and WARNINGS are not exhaustive Nexen cannot possibly know or evaluate all conceivable methods in which service may be performed or the possible hazardous consequences of each method Accordingly anyone who uses a procedure that is not recommended by Nexen must first satisfy themselves that neither their safety nor the safety of the product will be jeopardized by the service method selected INSTALLATION WARNING This unit has rotating parts Nexen recom mends installing a guard if the unit is used in Machine Shaft an area where injury to an operator could occur Contact your local Nexen Distributor for information regarding guards specifically designed for use with Air Champ brakes Torque NOTE The brake may be secured to the machine surface by using either the four holes in the Air Chamber Item 8 and bolting the brake to the machine housing or by using a torque pin through the slot in the bottom of the Air Chamber S ee Figure 1 Item 8 FIGURE 1 1 Insert the Key Item 16 into the machine shaft and Slide the brake over the machine shaft and Key See Figure 1 2 Install and tighten the three S et Screws Item 1 to secure
8. ial 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 Nexen Group Inc 800 843 7445 560 Oak Grove Parkway Fax 651 286 1099 Vadnais Heights MN 55127 Www nexengroup com ISO 9001 Certified FORM NO L 20010 F 0301 5
9. the brake to the machine shaft See Figure 1 BRAKE GUARD INSTALLATION 1 Align the mounting holes of the B rake G uard with the four tapped holes in the Air Chamber or the brake See Figure 2 2 Using the four 10 24 X 3 8 Phillips Head Pan Screws and Internal Tooth Lock W ashers secure the Brake G uard to the brake Chamber FIGURE 2 BRAKE GUARD INSTALLATION FORM NO L 20010 F 0301 1 CES MNaacza MEX 55 53 63 23 31 MTY 81 83 54 10 18 DIST AUTORIZADO 442 1 95 7260 ventas industrialmagza com LUBRICATION NOTE 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 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 Brake and use a low viscosity oil such as SAE 10 Synthetic lubricants are not recommended LUBRICATOR DRIP RATE SETTINGS NOTE These settings are for Nexen supplied lubricators If you are not using a Nexen lubricator calibration must 1 replicate the following procedure Close and disconnect the air line from the unit Turn the Lubricator Adjustment Knob counterclockwise three complete turns Open the air line Close the air line to the unit when a drop of oil forms the Lubricator Sight age PARTS REPLACEME
10. 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 For all 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 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 competent jurisdiction that any remedy herein fails of its essential purpose Limitation of Damages In no event shall Nexen be liable for any consequent
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