Rail Brake - Nexen Group
Contents
1. 651 286 1099 Vadnais Heights MN 55127 www nexengroup com ISO 9001 Certified 9 FORM NO L 21326 F 08152. Nexen LINEAR MOTION CONTROL PRODUCTS User Manual E gt gt gt m m Rail Brake Generation II RB15 RB20 RB25 RB30 RB35 RB45 RB55 and RB65 RB55 and RB65 are currently not C compliant FORM NO L 21326 F 0815 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 incomp
3. cordance 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 Ouotation and that specifically refers to this Ouotation 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 replacement 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 agree
4. d servicing the brake intended for indoor environments The brake has complex and only Use of the brake outdoors machined edges will damage components iD Moving parts can crush and cut Keep hands clear Figure 1 FORM NO L 21326 F 0815 4 INSTALLATION REOUIRED TOOLS e Clean pressurized air e Mounting bolts and appropriate wrench See Table 1 AIR CONNECTIONS All Nexen pneumatically actuated devices require clean and dry air which meet or exceeds ISO 8373 1 2001 Class 4 4 3 quality Do not use rigid pipe and tubing when making air line connections Doing so will result in damage to the product or system While the lubricated air will keep the seals well lubricated it may wash away the factory applied lubrication over time For this reason once lubricated air is used with a Nexen Rail Brake it must always be used Discontinuing use of lubricated air may cause seal failure Typical Brake Control Circuit Air Mid Regulator Supply gt Gauge 3 2 3 Way N C Valve Quick Exhaust Valve AIR PRESSURE 8 3 BAR 120 PSI ABSOLUTE MAX 4 1 BAR 60 PSI MIN TO ACTUATE O BAR 0 PSI ABSOLUTE MIN Figure 2 ACCESSORIES e 4mm 5 32 inch soft air tubing e Air valve e Quick exhaust valve optional Support the load before disengaging the Rail Brake Failure to support the load may result in serious injury or death The Rail Brake is equipped with one air i
5. lete and must not be put into service until the machinery into which it is to be incorporated 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 2015 Nexen Group Inc FORM NO L 21326 F 0815 9 Table of Contents General SpecitiCall ons EE RE EE BE OE ER KEN ee AE RS DEEG ED REEN AE RE HE er Ee ee ee de Aa 4 General Safety Precautions eeue EE EE EE EE EE ER EE EE ER ER EE ER EE RE ee EE Ee EE ee ee 4 BEE IE es Me se cetacean EE EA EN 5 Required ToolS 5 Air Connections 2 2 EE E nnn een nnn ee Se ee ee ee ee Se ee ee 5 cc ssorgg LERE EE Be EE Se EG ee GE Ee ER EE DA Ee Ee EE n EE 5 Mounting on a EES 6 LT AE LE GE 7 Pacton Facing Gap ae 6 0 aS aaa 7 F GUSTO aT AG IEG FGDC GN Ta ee AE EE EE EA ER EE Ee 8 Seri Ce de era ee ee EO EN EEN EE N TEE EE EE 8 TER oo 9 3 FORM NO L 21326 F 0815 GENERAL SPECIFICATIONS Specifications Holding Force Up to 3400 N 764 lbs Release Pressure 5 5 bar 80 psi Service Temperature 4 5 50 C 40 120 F Backlash See Tech Data Sheet Engagement Time See Tech Data Sheet GENERAL SAFETY PRECAUTIONS Watch for sharp features when Keep indoors This product is installing an
6. load before disengaging the Rail Brake Failure to support the load may result in serious injury or death NOTE Factory friction facing replacement is recommended Holding forces attained after field replacement may or may not meet factory specifications 1 With load supported remove the mounting screws from the brake 2 Disengage brake 3 Slide the rail brake off the rail 4 Using asmall pliers remove the facing return springs Springs contain stored energy use caution while removing 5 Carefully remove facings while the facing is off the components behind the facing are not retained Use caution not to loose small parts 6 Install new facings 7 Again using a small pliers reinstall the facings return springs Figure 10 FORM NO L 21326 F 0815 SERVICE RESTRICTIONS NOTE The Rail Brake assembly is designed for extended service life Due to this long product life stored spring energy and the complexity of the internal components Nexen recommends that all service be performed by trained personnel Do not attempt to remove or dismantle any part of the Rail Brake assembly This product is spring loaded and under pressure If the product malfunctions replace the unit or contact Nexen 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 ac
7. nlet port used to disengage the brake Refer to Figure 2 for location NOTE Clean air is important for proper Rail Brake func tioning Debris inside the Rail Brake may inhibit perfor mance and or decrease product life 1 Route clean air to the Rail Brake using soft lines Supply adequate air pressure to ensure complete disengagement NOTE For faster engagement and disengagement install the valve close to the Rail Brake Increasing air pressures will also speed the disengagement time but do not exceed 8 3 bar 120 psi air pressure Disengagement Air Inlet Port HAT CT Figure 3 FORM NO L 21326 F 0815 IMPORTANT Carefully follow Steps 1 4 to ensure a successful Rail Brake installation Do not use the dowel pin holes for brake installation These holes are for manufacturing purposes only MOUNTING ON A RAIL Assembly Shims This installation recommends the use of assembly shims to ensure proper alignment The assembly shim is a 08mm 003 rectangular shaped piece of shim stock that runs the full length of the facings See Figure 4 for an example Each shim will be different depending on rail type The shim is customer provided and one is required for each side 1 Disengage Brake a SPRING ENGAGED VERSION Apply minimum 5 5 BAR 80 PSI to air inlet of brake to disengage Refer to AIR CONNECTIONS for details b AIRENGAGED BRAKE Disengaged is the default position 2 Using ins
8. s 4 Again by hand run the brake the full length travel of the machine NO drag should be felt between the facing and rail If drag is experienced repeat alignment steps FRICTION FACING GAP ADJUSTMENT Friction facing gap adjustment should not be necessary as the gap is factory set to accommodate standard rail sizes and types Before attempting to adjust the facing gap Ensure the mounting and alignment processes are complete To achieve rated holding force the rail brake must maintain a close fit between the facing and the rail Under 127mm 005in Adjusting the brake to have a gap wider than this will cause performance reductions Disengage Brake 2 Cut the label between the housing and the guide using a straight edge Leave the label in place so it can act as a reference to the original position 3 Adjust the position of the facing by turning the guides on each side of the unit counter clockwise Notes regarding adjustment a Make sure each side is turned an equal amount Failure to do this could cause misalignment b 1 8 of a turn is equivalent to approximately 127mm 005in There should be no need to adjust more than this amount 4 Repeat mounting and alignment verification steps Socket Head Cap Screws Shoulder Figure 7 Customer Supplied Rail Brake Nexen Label Figure 8 Figure 9 FORM NO L 21326 F 0815 FRICTION FACING REPLACEMENT Support the
9. s 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 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 cour
10. t 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 80 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 which these terms and conditions are applicable may be brought by the Buyer more than one year after the cause of action has accrued ne gt lt en Nexen Group Inc 800 843 7445 560 Oak Grove Parkway Fax
11. tallation shims slide brake onto rail with shims between the facing and the rail on both sides The installation shims are approximately the same thickness as the gap between the facing and the rail Because of this some drag is expected while completing this step 3 Once brake is approximately in position install mounting screws finger tight Do not tighten at this point 4 Engage Brake this will center it on the rail then tighten the mounting screws Do not remove shims at this point Table 1 Screw Insertion Depth Socket Head Model mm Cap Screw Min Max RB15 M5 x 0 8 M6 x 1 0 M8 x 1 25 M10 x 1 5 M10 x 1 5 M12 x 1 75 M12 x 1 75 M16 x 2 0 FORM NO L 21326 F 0815 Shim Figure 4 Table end view See Figure 6 lt Rail Brake Table end view Socket Head Cap Screws i Bearing Base Rall Customer Supplied Note Brake width is slightly under carriage width Small gap 0 010 to be expected iC Figure 6 ALIGNMENT VERIFIGATION 1 With the shims still in place mounting bolts tightened and brake disengaged run the brake the full length of machine travel If an alignment issue exists the brake will drag at those spots where there is misalignment 2 If an alignment issue is found re adjust the rail per the manufacture s recommendations 3 Remove shim
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