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Endo ELF-15 User Manual

Spring balancer
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Users Manual
Spring Balancer
ELF-15
ELF-22
ELF-30
For safe and correct operation of the product, please be sure to read this manual and fully
understand its content before use.
After reading, keep the manual safe so that you can find and use it readily.
In case of resale or transfer of this product, make sure to transfer the manual to the new
owner.
ELF-40
ELF-50
ELF-60
ELF-70
BMU-0015
Issued in December 2022

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Summary of Contents for Endo ELF-15

  • Page 1 Users Manual Spring Balancer ELF-15 ELF-40 ELF-70 ELF-22 ELF-50 ELF-30 ELF-60 For safe and correct operation of the product, please be sure to read this manual and fully understand its content before use. After reading, keep the manual safe so that you can find and use it readily.

  • Page 2: Table Of Contents

    Spring Balancer Users Manual CONTENTS 1. Introduction ......................2 Notation in this manual .......................... 2 Scope of warranty and liabilities for the equipment ................3 Definition of intended users for this manual ..................3 Emergency contact in case of malfunctions ..................4 2.
  • Page 3 Spring Balancer Users Manual Introduction Thank you very much for your purchasing of the Spring Balancer. To prevent any trouble and obtain the best performance, please be sure to read this manual and fully understand its content. Notation in this manual Hazard levels This product is designed with ultimate priority on the safety of operators.

  • Page 4: Scope Of Warranty And Liabilities For The Equipment

    Copyright and liabilities The copyright for this manual is issued to Endo Kogyo Co., Ltd. The manual is provided for the limited purpose of supporting the safe and proper use of the product. It cannot be used for other purposes.

  • Page 5: Emergency Contact In Case Of Malfunctions

    Spring Balancer Users Manual The management supervisor is required to have sufficient knowledge of the Management product and advanced operating skill for this product. supervisor The management supervisor should manage not only the product itself but on-site operations that handle the product, comprehensively. The service engineer is a worker with special knowledge and skills for installing the product, investigating the causes of a failure or damage, and performing repairs Service engineer...

  • Page 6: Disposal Of Packing Materials

    Spring Balancer Users Manual 3-3 Disposal of packing materials After opening the package, dispose of any packing and cushioning materials in accordance with the local regulations of the area where the product is used. Product Description 4-1 Components Note: The shapes and the number of springs differ according to the models. 4-1-1 Main equipment Top hook Casing...

  • Page 7: Product Specifications

    4-3-1 Specifications Capacity Factory setting Wire rope Model Stroke (m) Mass (kg) range (kg) load (kg) diameter (φ mm) 4.76 10.0 ELF-15 9.0 to 15.0 4.76 10.2 ELF-22 15.0 to 22.0 4.76 11.0 ELF-30 22.0 to 30.0 4.76 14.5 ELF-40 30.0 to 40.0...

  • Page 8: Installation

    Spring Balancer Users Manual Installation WARNING  Install the balancer correctly in accordance with the descriptions in this manual. Incorrect installation may cause an injury, property damage, or damage to the balancer.  Be sure to attach an auxiliary wire rope or chain to the balancer to protect workers in case the top hook or the support member (metal hanger) for the balancer should be damaged.

  • Page 9: Installation Procedures

    Spring Balancer Users Manual 5-2 Installation procedures 5-2-1 Installation of the Spring Balancer CAUTION Do not fix the top hook. Using the product with the top hook fixed may cause damage or a fall. NOTICE  Use a support member (metal hanger) with no opening as shown in the figure on the right, so that the balancer does not come off while in motion.
  • Page 10 Spring Balancer Users Manual CAUTION Loosen the auxiliary wire rope or chain to allow the balancer to move freely. The slack must be such that the balancer Damaged stops within 100 mm if the top hook or and falls the support member (metal hanger) for Within the balancer are damaged and the 100 mm...

  • Page 11: Post-Installation Checks

    Spring Balancer Users Manual 5-3 Post-installation checks 5-3-1 Checking the working range (stroke) NOTICE Do not extend the wire rope beyond the stroke. Doing so may damage the balancer. Ensure that work can be performed within the range of the stroke. For the stroke of each product, see “4-3-1 Specifications”.

  • Page 12: Precautions For Use

    Spring Balancer Users Manual  Check of the main equipment of the balancer For the main equipment of the balancer, perform the following inspections and checks. Check that the top and bottom hooks are not worn and can rotate smoothly. Check that the latches of the top and bottom hooks are not deformed and do not come off the hooks.

  • Page 13: Operation Method Of The Drum Lock

    Spring Balancer Users Manual 6-3 Operation method of the drum lock Operate the drum lock according to the figure below. Release position (shallower slot) Lock position (deeper slot) Spring pin 6-3-1 Activation of the drum lock WARNING  Do not remove the tool (equipment) attached to the bottom hook until it is confirmed that the drum is securely locked.

  • Page 14: Periodical Inspections

    For the method of the periodical inspections, download “Repair Manual” from our website and refer to “2-2 Periodical inspections” in “Repair Manual”. http://www.endo-kogyo.co.jp If the product is used in an unfavorable environment or used frequently, reduce the interval between the inspections.

  • Page 15: Troubleshooting

    Spring Balancer Users Manual Troubleshooting 7-1 Countermeasures? WARNING Do not remove the tool (equipment) attached to the wire rope end until the cause of the failure is identified. If the tool (equipment) is removed, the wire rope may be quickly wound up, causing an injury. CAUTION ...

  • Page 16: Dimensional Drawing

    Spring Balancer Users Manual Dimensional Drawing Outline drawing (Table of external dimensions) Dimension (mm) Model MIN. MAX. ELF-15, 22, 30 2969 φ230 φ3.2 φ3.2 ELF-40, 50 2987 φ250 φ3.2 φ3.2 ELF-60, 70 2987 φ250 φ3.2 φ3.2 Consumables and Special Accessories The consumables include the following parts.
  • Page 17 〒959-1261 新潟県燕市秋葉町 3 丁目 14 番 7 号 TEL： 0256-64-4786 FAX： 0256-62-5772 E-mail：service@endo-kogyo.co.jp ENDO KOGYO CO., LTD. 3-14-7, Akiba cho, Tsubame, Niigata 959-1261, Japan http://www.endo-kogyo.co.jp/ TEL: 81-256-62-5133  本書、ならびに本製品の仕様は、改善のために予告なしに変更することがあります。  本書の内容の無断転載を禁止します。  This manual and the specifications of this product are subject to change for improvement without advance notice.
  • Page 18 Repair Manual Spring Balancer ELF-15 ELF-40 ELF-70 ELF-22 ELF-50 ELF-30 ELF-60 For safe and correct operation of the product, please be sure to read this manual and fully understand its content before use. After reading, keep the manual safe so that you can find and use it readily.

  • Page 19: Notation In This Manual

    Spring Balancer Repair Manual Introduction Thank you very much for purchasing the Spring Balancer. To prevent any trouble and obtain the best performance, please be sure to read this Repair Manual and the separate Users Manual, and fully understand their content. Notation in this manual Hazard levels This product is designed with ultimate priority on the safety of operators.

  • Page 20: This Users Manual Uses The Following Symbols To Simply Provide Information In Addition To The Indications Above

    Spring Balancer Repair Manual Symbols This Users Manual uses the following symbols to simply provide information in addition to the indications above. Indicates potential property damage Indicates a PROHIBITED action or a danger that may inflict bodily that must not be performed. injury.
  • Page 21 Copyright and liabilities The copyright for this manual belongs to Endo Kogyo Co., Ltd. The manual is provided for the limited purpose of supporting the safe and proper use of the product. It cannot be used for other purposes.
  • Page 22 Spring Balancer Repair Manual Definition of intended users for this manual This manual has been prepared to help all intended users involved with this product. From the standpoint of safety, we have defined intended users according to their ability and experience and provided detailed descriptions for each group.
  • Page 23 Spring Balancer Repair Manual CONTENTS Introduction ......................... 1 Notation in this manual .......................... 1 Scope of warranty and liabilities for the equipment ................3 Definition of intended users for this manual ..................4 Emergency contact in case of malfunctions ..................4 1.

  • Page 24: Precautions For Handling

    Spring Balancer Repair Manual Precautions for handling Incorrect handling of this product may cause damage to the product itself as well as a fire or injury. Thoroughly read the following precautions and be sure to heed the instructions when handling the machinery.

  • Page 25: Maintenance

    Spring Balancer Repair Manual Maintenance WARNING The maintenance should be performed by a maintenance operator who has developed sufficient knowledge and operating skill for the balancer. CAUTION Replace any parts using genuine parts only. Daily and periodic inspections are required for the product to be used safely and properly. If any failure is found in the inspections, the relevant parts must be replaced.
  • Page 26 Spring Balancer Repair Manual Inspection of the wire rope See the figure below and measure the dimension of the wire rope. The wire rope must be replaced when the dimension has reached the limiting dimension or the limiting number of broken wires within one pitch.

  • Page 27: Replacement Of The Wire Rope

    Spring Balancer Repair Manual Replacement of the wire rope WARNING Do not release the drum lock when the balancer is not loaded or after the tool (equipment) is replaced with one with a different mass (weight). If the drum lock is released in such situations, the wire rope may be quickly wound up as soon as the lock is released, the tool may fall, or an injury may be caused.
  • Page 28 Spring Balancer Repair Manual Remove the balancer from the support member and place it on the ground or on a workbench. Remove the plug with a hex. key. Plug...
  • Page 29 Spring Balancer Repair Manual Pull the wire rope from the drum until it is totally removed. REMINDER If the end of the wire rope becomes stuck while drawing the wire rope into the drum, push or squeeze the end of the wire rope into the drum using a tool to dislodge it. Wire rope Insert the new wire rope into the drum through wire rope insertion hole B from side A as shown in the figure below, and pass the wire rope inside the drum.
  • Page 30 Spring Balancer Repair Manual Pull out the end of the wire rope through the window and insert the end into the hole for the plug. Squeeze the end of REMINDER If the end of the wire rope is the wire rope using caught while pulling it a tool When the wire rope becomes stuck inside the...

  • Page 31: Replacement Of The Spring

    Spring Balancer Repair Manual Replacement of the spring WARNING  The spring should be replaced by a maintenance operator who has developed sufficient knowledge and operating skill for the balancer.  The spring of the product is highly dangerous if handled incorrectly. Handle the spring with great caution when replacing it.
  • Page 32 Spring Balancer Repair Manual Remove the balancer from the support member and place it on the ground or on a workbench. Remove the gauge. Gauge Loosen the set screw and remove all pins. Set screw Remove the plug with a hex. key. Plug...
  • Page 33 Spring Balancer Repair Manual Pull the wire rope from the drum until it is totally removed. REMINDER If the end of the wire rope becomes stuck while drawing the wire rope into the drum, push or squeeze the end of the wire rope into the drum using a tool to dislodge it. Wire rope Loosen the hex.
  • Page 34 Spring Balancer Repair Manual Remove the spring assembly, drum, and spindle as one unit from the casing. Spring assembly Drum Spindle Remove the washer if it remains. If the washer cannot be removed in step 2, remove the remaining washer from the inside of the casing.
  • Page 35 Spring Balancer Repair Manual Remove the Cap screw and the spring washers, and separate the spring assembly from the drum. Cap screw Spring washer Spring assembly Drum WARNING Do not remove the cover from the spring assembly. If the cover of the spring assembly is removed, the spring inside may spring out, causing an injury.
  • Page 36 Spring Balancer Repair Manual Assembling of the spring Attach the spring assembly on the drum with the Cap screw and the spring washers. Cap screw Spring washer Spring assembly Drum Attach the spindle. Spindle Attach the spring assembly, drum, and spindle to the casing. Spring assembly Drum Spindle...
  • Page 37 Spring Balancer Repair Manual Attach the cover, and attach the hex. head bolts and the spring washers. Hex. head bolt Cover Insert the wire rope into the drum through wire rope insertion hole B from side A as shown in the figure below, and pass the wire rope inside the drum.
  • Page 38 Spring Balancer Repair Manual Pull out the end of the wire rope through the window and insert the end into the hole for the plug. REMINDER Squeeze the end of the wire rope using If the end of the wire rope is When the wire rope becomes stuck inside the a tool caught while pulling it...
  • Page 39 After the wire rope is completely wound inside the drum, further turn the worm by the number of times described in the table below. Setting weight Model Number of worm turns ELF-15 Approx. 140 Approx.12kg ELF-22 Approx. 120 Approx.18kg ELF-30 Approx.
  • Page 40 Spring Balancer Repair Manual Attach the gauge according to the adjusted load. Capacity indication point (18 kg for this example) Gauge Maximum Minimum capacity capacity Gauge Attach all pins. Set screw Align the notch on the pin with the tip of the set screw, and fix the pin with the set screw. Set screw Notch WARNING...

  • Page 41: Replacement Of The Wire Guide

    Spring Balancer Repair Manual Replacement of the wire guide WARNING Do not remove the tool before checking that the drum is securely locked by moving the tool (equipment) up and down. If the drum is locked inadequately, the drum lock may be released during the work.
  • Page 42 Spring Balancer Repair Manual Remove the hex. socket button bolts (2 pieces), and remove the wire guide from the casing together with the spacers. Keep the spacers because it is used for reinstallation. Spacer Wire guide Hex. socket button bolts Attach the new wire guide and the spacers with the hex.

  • Page 43: Countermeasures When The Wire Rope Is Caught Between The Drum And The Casing

    Spring Balancer Repair Manual Countermeasures when the wire rope is caught between the drum and the casing Strongly pull the wire rope with the tool (equipment) attached. REMINDER Inspect the wire rope after pulling it out. Replace the wire rope if any damage is found. If the wire rope cannot be pulled out, remove the retaining ring from the end of the worm.
  • Page 44 Spring Balancer Repair Manual Loosen the set screw and remove all pins. Set screw Remove the gauge. Gauge Loosen the hex. head bolts and remove the cover. Hex. head bolt Cover Remove the washer if it remains. If the washer cannot be removed in step 3, remove the remaining washer from the inside of the casing.
  • Page 45 Spring Balancer Repair Manual Pull out the wire rope completely, and inspect the wire rope. Replace the wire rope if any damage is found. Attach the cover, and attach the hex. head bolts and the spring washers. Attach the worm together with the washer and attach the retaining ring. Retaining ring Washer Worm...
  • Page 46 TEL： 092-412-5281 FAX： 092-412-5280 サービス営業グループ 〒959-1261 新潟県燕市秋葉町 3 丁目 14 番 7 号 TEL： 0256-64-4786 FAX： 0256-62-5772 E-mail：service@endo-kogyo.co.jp ENDO KOGYO CO., LTD. 3-14-7, Akiba cho, Tsubame, Niigata 959-1261, Japan http://www.endo-kogyo.co.jp/ TEL: 81-256-62-5133 本書ならびに本製品の仕様は改善のために予告なしに変更することがあります。  本書の内容の無断転載を禁止します。  This manual and the specifications of this product are subject to change for improvement without ...
  • Page 47 PARTS LIST Spring Balancer ELF-15 ELF-40 ELF-70 ELF-22 ELF-50 ELF-30 ELF-60 This Parts List covers products from 2021 onwards. Please contact us for any inquiries regarding other parts of the product. BMP-0015 Issued in December 2022...
  • Page 48 This parts list shows parts for the Spring balancer ELF series. Models are as below. Capacity range Factory Setting Stroke Wire rope Mass Model （kg） Load （kg） （m） （kg） diameter（φ mm） 9.0～15.0 ELF-15 4.76 10.0 15.0～22.0 ELF-22 4.76 10.2 22.0～30.0 4.76 11.0 ELF-30 30.0～40.0 ELF-40 4.76...
  • Page 49 Parts list 2-1 Spring balancer Body  ELF-15／ELF-22／ELF-30 Ref. Quantity Parts No. Description Remarks ELF-15 ELF-22 ELF-30 － LBP001364 Casing assembly P2B100155 －Casing － LBP000215 －Hook complete － －－Hook － LBP000216 －－Latch set － －－－Latch － －－－Spring － －－－Rivet －...
  • Page 50 Ref. Quantity Parts No. Description Remarks ELF-15 ELF-22 ELF-30 18 P2B100006 Drum － LBP000607 Spring assembly － LBP000608 Spring assembly － LBP000609 Spring assembly － －Spring case － －Plate － －Spring － －Bushing － LBP001823 －Safety pin set － －－Safety pin －...
  • Page 51  ELF-40／ELF-50／ELF-60／ELF-70 Quantity Ref. Parts No. Description Remarks ELF-40 ELF-50 ELF-60 ELF-70 － LBP001365 Casing assembly P2B100156 －Casing － LBP000215 －Hook complete － －－Hook － LBP000216 －－Latch set － －－－Latch － －－－Spring － －－－Rivet － －－Shaft － －－Rivet － LBP001366 －Drum lock assembly －...
  • Page 52 Quantity Ref. Parts No. Description Remarks ELF-40 ELF-50 ELF-60 ELF-70 － LBP000612 Spring assembly － LBP000613 Spring assembly － －Spring case － －Plate － －Spring － －Bushing － LBP001140 －Safety pin set － －－Safety pin － －－Spring － －－Spacer － －－Retaining ring －...
  • Page 53 〒812-0013 福岡県福岡市博多区博多駅東 3 丁目 11 番 15 号文喜ビル 3F TEL： 092-412-5281 FAX： 092-412-5280 サービス営業グループ 〒959-1261 新潟県燕市秋葉町 3 丁目 14 番 7 号 TEL： 0256-64-4786 FAX： 0256-62-5772 E-mail：service@endo-kogyo.co.jp ENDO KOGYO CO., LTD. 3-14-7, Akiba cho, Tsubame, Niigata 959-1261, Japan http://www.endo-kogyo.co.jp/ TEL: 81-256-62-5133 本書ならびに本製品の仕様は改善のために予告なしに変更することがあります。  本書の内容の無断転載を禁止します。  ...

This manual is also suitable for:

Elf-40Elf-70Elf-22Elf-50Elf-30Elf-60

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