User Manual
Contents
1. MANUAL RELEASE The Nexen RLSS C MR and the RLSS S MR are Manual Release designed with a manual release override In the event that Turn Clockwise Only the air supply is cut off or unavailable unlocking can be performed with a common wrench or socket Simply turn the bolt clockwise and hold to release the Rod Lock See Figure 6 The cam is designed to be fail safe and will not allow the Rod Lock to unlock without applying torque If torque to the bolt is relieved the mechanism will re lock The release of mechanism is designed to turn only in the clockwise direction as shown by the arrows on the product Do not turn the bolt counterclockwise damage to the release mechanism may result DAN Turn the bolt clockwise and hold to manually release the Rod Lock Figure 6 Do not over torque release mechanism Using excessive torque may damage mechanism 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 under pressure If the product malfunctions replace the unit or contact Nexen 9 FORM NO L 21222 E 1211 WARRANTY Warranties Nexen warrants that the Products will a be free from any d2. year after the cause of action has accrued 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 21222 E 1211 10
3. efects 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 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 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
4. en recommends the machine builder design guarding in compliance with OSHA 29 CFR 1910 Occupational Safety and Health Hazards Do not attempt to disassemble this product Product components are spring loaded and can cause serious Injury PIV aay PARRA FORM NO L 21222 E 1211 Do not exceed the maximum holding force of the unit The locking function will be overloaded causing rod slip and possible damage to the shaft and product Do not use a Rod Lock to stop a rotating shaft This product is not intended for torsional braking or frequent dynamic braking Do not engage the Rod Lock without a properly sized rod in place or damage to the internal components may result N u u TTT TE U I EN HE ja INSTALLATION NOTE Rod and Shaft refer to the same feature and are used interchangeably The S stand alone series Rod Locks are designed to mount on round guide rods and are typically mounted in accordance with the design of the machine The C cylinder series Rod Locks are designed to mount directly to NFPA or ISO flush mount air cylinders The C mounted Rod Locks come with 4 mounting screws These screws are used to attach the Rod Lock to cylinders with tapped holes in the interface or with socket head sleeve nuts The mounting screws are not necessary on cylinders equipped with threaded tie rods nuts Cylinders should be prepared with enough rod length and tie rod leng
5. essure is maintained on both sides of the cylinder piston keeping it balance preventing 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 ystem ylinder control using a 9 3 valve with the center open on the central port Manual Override Defaults to Lock If Equipped Rod Lock Control Valves Exhaust U Valve 3 Way Outward Valve Control ae 5 3 Valve Figure 4 FORM NO L 21222 E 1211 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 Rod Lock System Shown Vertical mounting with the load on top of the cylinder Quick Exhaust Valve Flow Control gt Lowering Control 3 Way Valve Raising o Control 5 3 T Manual Override Defaults to Lock If Equipped Figure 3 ylinder control using a 9 3 valve with the center open on the central port Raising Control 5 3 Valve Regulator Figure 5 Manual Override Defaults to Lock If Equipped
6. formity with the applicable provisions of the Directive Nexen Group Inc 560 Oak Grove Parkway Vadnais Heights Minnesota 55127 ISO 9001 Certified Copyright 2011 Nexen Group Inc FORM NO L 21222 E 1211 2 Table of Contents General Specifications 4444444444442 4440 0044000001004 Hamann none 4 General Safety Precautions 44 444444442 4400140014001 nn 4 eS EVD gesessen a a ne a ni 5 Rod Material repni n aeea e a aaeeea ae 6 LuDrigatiom re al E a a a nr ae sen lengpe 6 Optional Locking Mode Sensor 444444444444m4444 14444000000 7 Air Connections 4444444444444 444010400 000000414444 7 Air Controls and Programming 444444444444444424 2000000000000 00000 mannan Hmmm 8 Manual Release nm ese a e e eaae 9 SEICE Rec mme nd AO ee cl EEE RI aa 10 Warrants 10 3 FORM NO L 21222 E 1211 GENERAL SPECIFICATIONS Specifications Holding Force Up to 22350 N 5026 lbs Actuation Pressure 1 5 5 bar 14 5 120 psi External Temp Limits 0 5 66 C 33 150 F Approximate Weight Up to 29 5 kg 65 Ibs GENERAL SAFETY PRECAUTIONS Use lifting aids and proper lifting techniques when installing removing or placing this product in service Watch for sharp features when interacting with this product The parts have complex shapes and machined edges Ensure proper guarding of the product is used Nex
7. load could result in serious bodily injury 1 The Nexen rod lock is equipped with a NPTF or BSPP port for the air inlet Route clean air using 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 Higher air pressures will also speed the disengagement time but do not exceed 8 0 bar 120 psi air pressure Nexen RLSSB products are equipped with a T slot for an optional locking mode sensor See Table 2 This sensor can be positioned in the T slot to relay when the Rod Lock is disengaged or engaged on the shaft Once the sensor is properly located to relay when the Rod Lock is in the desired state use a standard flat head screwdriver or 1 5 mm allen wrench to turn the screw and fix the sensor in the T slot See Figure 2 Table 2 Inductive Sensor Product Numbers Sensor Product Type Number 966190 NPN Sinking 966195 PNP Sourcing 2 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 NOTE Clean air is important for proper Rod Lock functioning Debris inside the Rod Lock may inhibit performance and or shorten the life of the product All Nexe
8. n pneumatically actuated devices require clean and dry air which meet 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 chambers of the product FORM NO L 21222 E 1211 AIR CONTROLS AND PROGRAMMING CYLINDER MOUNTING Minimum release pressure 4 bar 60 psil Maximum pressure 8 bar 120 psil Cylinder functioning is regulated by a 5 3 valve use cylinder manufacturer s recommend Cv valves center 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 circuits 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 normally 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 maintains accurate rod positioning Stopping precision is determined by the rate of speed of the rod and loads in motion Horizontal Mounting Pr
9. n 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 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
10. nN Ben LINEAR MOTION CONTROL PRODUCTS User Manual gt gt gt Spring Engaged Rod Shaft Lock RLSSB S CE Ma Sum er RLSSB S MR 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 ts the original non translated version Conformity Declaration In accordance with Appendix Il 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 incorporated has been declared in con
11. 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 in consideration of the limitation on damages set forth herein and such limitation has bee
12. quire additional lubrication 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 bearings 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 These settings are for Nexen supplied ne BHONC ator Song lubricators If you are not using a Nexen PR lubricator calibration must follow the 5 Connect the air line to the unit manufacturer s suggested procedure 6 Turn the Lubricator Adjustment Knob clockwise until closed 1 Close and disconnect the air line from the unit 7 Turn the Lubricator Adjustment Knob counterclockwise 2 Turn the Lubricator Adjustment Knob counterclockwise one third turn three complete turns 8 Open the air line to the unit 3 Open the air line FORM NO L 21222 E 1211 6 OPTIONAL LOCKING MODE SENSOR Locking Mode N Sensor Figure 2 AIR CONNECTIONS Support the load before disengaging the Rod Lock Failure to support the
13. th if appropriate to accommodate the rod lock length 1 Apply a constant supply of air with a minimum of 4 1 bar 60 psi air pressure to open release the Rod Lock Manual release option apply the appropriate amount of torque to the manual override mechanism to open release the Rod Lock 2 Remove the supplied rod from the inside of the Rod Lock and keep for future use Do not engage the Rod Lock without a properly sized rod in place or damage to the internal components may result Refer to the Rod Material section Figure 1 8 Bores 3 Carefully slide the Rod Lock over the cylinder rod or guide rod past the seal s and through the entire assembly Note Cylinder C mounts skip to instruction 5 4 S stand alone series Remove the air pressure to engage the Rod Lock on the guide rod when it Is in the desired position 5 C cylinder mount series Carefully slide the Rod Lock onto the cylinder rod toward the cylinder end cap The Rod Lock is piloted and sealed to the gland O D so some force is required Press the Rod Lock onto the end cap face as close as possible 6 Using a corner to corner sequence install and tighten the mounting screws or tie rod nuts to approximately 75 of the final tightening torque See Table 1 7 Using acalibrated torque wrench tighten the fasteners or nuts to the final torque specification using the same corner to corner sequence 8 Remove the air press
14. ure to engage the Rod Lock on the cylinder rod Table 1 Fastener or Tie Rod Torque Roae Ineh Pounds nm RLSSB 200008 7282 gg RLSSB 200100 7282 gg Risse 250 069 7282 go SS ee FORM NO L 21222 E 1211 ROD MATERIAL Nexen strongly recommends the following rod material for cylinder rods and guide rods Deviations from these specifications will result in poor rod lock performance and shaft damage Hardness Specification Hard Chrome Plating Thickness Less than 52 HRC 20 microns 0 0008 inch Greater than 52 HRC 8 3 microns 0 0003 0 0005 inch The diameter should lie in the h8 tolerance range Reference USAS B4 1 1967 1974 ISO 286 1 1988 The rod must be clean and dry to maintain optimum holding forces The surface roughness Rmax should be 1 6 microns 63 micro inch or better 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 Nexen s Static Rod Lock is suitable for infrequent dynamic braking emergency stops when used with hardened shaft material Repeated dynamic stops may cause rod and or collar wear reducing holding forces ISO 286 2 1988 LUBRICATION NOTE Nexen pneumatically actuated devices require clean pressure regulated air for maximum performance and life All seals in Nexen pneumatically operated devices are lubricated for life and do not re
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