Manual - Nexen Europe
Contents
1. ROD MATERIAL e Nexen s Rod Lock must mount to a shaft that is hardened to a minimum of HRC 60 or hard chrome plated to a minimum thickness of 20 microns 0 0008 in or damage to the shaft may result e The diameter should lie in the h8 tolerance range Reference USAS B4 1 1967 1974 ISO 286 1 1988 ISO 286 2 1988 e The rod must be clean and dry to maintain optimum holding forces e The surface roughness Rmax should be 1 6 microns 63 microinch or better AIR FITTINGS 4 DANGER Carefully work the new rod past the seal s and through the Rod Lock assembly When the rod is in the desired position engage the lock by removing air pressure A variety of mounting configurations are available mount the rod lock as desired The rod lock unit can be installed in any orientation with a cylinder for the C models or as a stand alone unit for the S models The rated holding force corresponds to static load conditions If the rated value is exceeded slippage may occur Operating dynamic forces must not exceed the static holding force CAUTION Nexen s Static Rod Lock is suitable for infre quent dynamic braking emergency stops when used with hardened shaft material Re peated dynamic stops may cause rod and or collar wear reducing holding forces Support the load before disengaging the Rod Lock Failure to support the load could result in serious bodily injury 1 The Nexen rod lock2. is equipped with a NPT or BSPT port for the air inlet Route clean air using 2 soft or hard lines supplying at least 4 1 bar 60 psi to facilitate full disengagement NOTE Install the valve in close proximity to the Rod Lock unit for faster engagement and disengagement The Nexen rod lock is equipped with a port for the internal vent filters are included with most models If the air quality around the application is poor route the vent of the rod lock to a more suitable area or use a filtered breather Contact Nexen for available components Higher air pressures will also speed the disengagement NOTE Clean air is important for proper Rod Lock time but do not exceed 8 0 bar 120 psi air functioning Debris inside the Rod Lock may inhibit pressure performance and or shorten the life of the product FORM NO L 21183 D 1005 3 AIR CONTROLS AND PROGRAMMING CYLINDER MOUNTING Minimum release pressure 4 bar 60 psil Maximum pressure 8 bar 120 psi Cylinder functioning is regulated by a 5 3 valve use cylinder manufacturer s recommend Cv valves cen ter open on the central port and supplied by exhaust ports NOTE Do not use a valve with a closed center This will cause unbalance in the piston if any of the cir cuits leak One directional flow reducers can be used to control the speed of the cylinder rod To ensure fast braking of the rod a quick exhaust valve can be installed on or near the rod lock The nor
3. ES SPECIAL DAMAGES CONSEQUENTIAL DAMAGES OR OTHER DAM AGES 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 li able 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 bar gained 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 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 Proc
4. edures 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 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 21183 D 1005 7
5. he load on top of the cylinder Quick Exhaust Valve Flow Control Valves O a Lowering Control 3 Way Valve Raising Control Figure 1 System Shown Cylinder control using a 5 3 valve with the center open on the central port Raising WV 5 3 ae Figure 3 4 FORM NO L 21183 D 1005 AIR PREPARATION For long life Nexen s Rod Lock requires clean and pressure regulated air filtered to five microns or better Nexen does not recommend lubricated air for this product ROD LOCK ASSEMBILY RLSS S MopeL SHown Housing Retaining Ring Piston Sleeve Bearing Friction Collar O ring Seal Steel Ball O ring Seal End Cap O ring Seal Rod Wiper Seal Spring Retaining Ring 1 Varies with size and model FORM NO L 21183 D 1005 5 RLSS C Mope SHowN Hi u 1 Housing Sleeve Bearing Piston O ring Seal Friction Collar O ring Seal Steel Ball O ring Seal End Cap Spring Rod Wiper Seal Shaft Retaining Ring Guide O Ring Retaining Ring Screw Mounting Varies with size and model 1 2 3 4 5 6 7 SERVICE RECOMMENDATION NOTE The rod lock 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 the retaining ring and dismantle the rod lock assembly This product is spring loaded and unde
6. mally closed NC solenoid valve directs the air supply to the rod lock keeping it disengaged until the electrical signal is interrupted Vertical Mounting The force on the piston must not exceed its locking capacity when it is combined with the force of the load Use of a 5 3 valve provides a braking effect and main tains accurate rod positioning Stopping precision is determined by the rate of speed of the rod and loads in motion Horizontal Mounting Pressure is maintained on both sides of the cylinder piston keeping it balance prevent ing displacement of the rod upon release Use exhaust ports 3 and 5 see below STAND ALONE MOUNTING Specifications match those of cylinder models listed above System Shown Cylinder control using a 5 3 valve with the center open on the central port Rod Lock Control Valves U Outward Control CS 5 3 Valve Quick Exhaust Valve 3 Way Figure 2 CAUTION When programming the Nexen Rod Lock in motion control systems it is critical to avoid repeated overlapping conditions i e forced motion during the engagement or disengagement of the Rod Lock Shaft damage will result Design the control system to use the Rod Lock in static conditions Nexen s Rod Lock must mount to a shaft hardened to a minimum of HRC60 or hard chrome plated to a minimum thickness of 20 microns 0 0008 in or damage to the shaft may result System Shown Vertical mounting with t
7. nexen LINEAR MOTION CONTROL PRODUCTS User Manual gt gt gt _ Spring Engaged Rod Shaft Lock RLSS S RLSS C FORM NO L 21183 D 1005 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 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 2 FORM NO L 21183 D 1005 INSTALLATION NOTE Rod and Shaft refer to the same feature and 3 are used interchangeably 1 Apply a constant supply of at least 4 1 bar 60 PSI 4 to the Rod Lock device 2 Remove the supplied rod from the inside of the Rod 5 Lock and keep for future use ZN CAUTION Do notengage the Rod Lock without a properly sized rod in place or damage to the internal components may result
8. r pressure If the product malfunctions replace the unit or contact Nexen 6 FORM NO L 21183 D 1005 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 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 no tice 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 PER SON FOR INCIDENTAL DAMAG
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