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Nabtesco RV RH E Series Operation Manual

Precision reduction gear high precision gearhead
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Precision Reduction Gear
High Precision Gearhead
RH
Series
Operation Manual
<Applicable model>
RH-E
RH-C
RH-N
 above indicates the torque code (number).
For the applicable models, refer to "Model" indicated on the shipping label of the product.
This manual must be thoroughly read and understood before using the product.
Be sure to deliver this operation manual to the system manager and the person in
charge of the operation.
Keep this manual in the specified location so that it can be immediately referred to
whenever necessary.
®
TM
RV
ERD15018A
2016/10/01

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Summary of Contents for Nabtesco RV RH E Series

  • Page 1 ® Precision Reduction Gear High Precision Gearhead Series Operation Manual <Applicable model> RH-E RH-C RH-N  above indicates the torque code (number). For the applicable models, refer to “Model” indicated on the shipping label of the product. This manual must be thoroughly read and understood before using the product. Be sure to deliver this operation manual to the system manager and the person in charge of the operation.

  • Page 2: Table Of Contents

    Contents Contents Important Information  ............................ i 1. Intended use of this product ........................i 2. Rules to ensure safe use of this product ....................i 3. Sharing of hazard information with users ....................ii 4. Product disposal ............................ii 5. Other important notes ..........................ii About This Manual  .............................. iii 1.
  • Page 3 Contents Chapter 6 Filling the Lubricant .................. 36 6.1. Precautions when handling the lubricant ....................36 6.2. Reduction gear mounting direction and amount of lubricant ..............38 6.3. Lubricant filling procedure ........................40 Chapter 7 Operation ....................42 7.1. Checking before operation ........................42 7.2.

  • Page 4: Important Information

    Failure to do so could cause injury or damage to the reduction gear. Rules to ensure safe use of this product It is impossible for Nabtesco Corporation (referred to as “Nabtesco” hereafter) to foresee any potential hazards related to this product and hazards caused by human errors or peripheral devices.

  • Page 5: Sharing Of Hazard Information With Users

    Important Information Observe the relevant laws, regulations, ordinances, and bylaws. Observe the relevant laws, regulations, ordinances, and bylaws enacted by the related countries and local governments. Prevention of accidents • To prevent accidents, do not perform any procedures not noted in this manual. Also, do not use this product for any purposes other than those noted at the beginning of this manual.

  • Page 6: About This Manual

    English, the customer is responsible for conducting safety training and giving operation instructions to those workers. Copyrights The copyright for this manual belongs to Nabtesco Corporation. Unauthorized reprinting, reproduction, copying, or translation of this manual in whole or in part is strictly prohibited.

  • Page 7: Warranty

    Warranty Warranty 1. In the case where Nabtesco confirms that a defect of the Product was caused due to Nabtesco’s design or manufacture within the Warranty Period of the Product, Nabtesco shall repair or replace such defective Product at its cost. The Warranty Period shall be from the delivery of the Product by Nabtesco or its distributor to you (“Customer”) until the end of one (1) year thereafter, or the end of two thousand...

  • Page 8: Glossary

    Glossary Glossary Rated service life The lifetime resulting from the operation with the rated torque and the rated output speed is referred to as the “rated service life”. Allowable acceleration/deceleration torque When the machine starts or stops, the load torque to be applied to the reduction gear is larger than the constant-speed load torque due to the effect of the inertia torque of the rotating part.

  • Page 9: Chapter 1 About Safety

    Chapter 1 About safety Chapter 1 About safety The safety precautions noted in this chapter should be used as guidelines to prevent injury of workers who perform transportation, installation, operation, and maintenance of this product, as well as damage to the product.

  • Page 10: General Precautions

     This reduction gear may not be filled with lubricant, depending on the customer's specifications. For such product, fill it with an appropriate amount of Nabtesco-recommended lubricant before use. Failure to do so could cause damage to the reduction gear.

  • Page 11: Chapter 2 Product Overview

    Chapter 2 Product overview Chapter 2 Product overview This chapter describes an overview of this product. 2.1. Name of each section This section provides an explanation of the name of each section. • If the shape of the actual section differs from the illustration below, refer to the separately provided “Outer dimensions”...
  • Page 12 Chapter 2 Product overview Type D Hole for installing Oil seal on the Output shaft Case Middle flange reduction gear output side (shaft) Oil seal in the Label hollow section Tapped hole for injecting/draining grease (component to be fixed) Tapped hole for injecting/ draining grease (component to be...
  • Page 13 Chapter 2 Product overview Type G Hole for Tapped hole for injecting/draining installing grease (component to be rotated) reduction gear Case Tapped hole for installing component Shaft Hollow section Center gear Motor flange Fig. 2-7 Type H Tapped hole for injecting/draining grease Tapped hole for Middle flange...

  • Page 14: Chapter 3 Transportation And Storage Of Product

    Chapter 3 Transportation and storage of product Chapter 3 Transportation and storage of product This chapter describes the transportation and storage of this product. 3.1. Transportation • Transport the product in an appropriate manner according to the weights indicated in the separately provided “Outer dimensions”...

  • Page 15: Storage

    Chapter 3 Transportation and storage of product 3.2. Storage To avoid rust, corrosion, or deterioration of the sealing material, etc., and collapse of stored packing boxes, store the product in the following location. • Location where the ambient temperature is between -10°C to 40°C. •...

  • Page 16: Chapter 4 Preparations For Installation

    Chapter 4 Preparations for installation Chapter 4 Preparations for installation This chapter describes the preparation for installing this product. Before designing the equipment, take care regarding the following precautions. • When the reduction gear is used for human transportation equipment, install an effective safety unit as a fail-safe mechanism, in case of an unexpected failure in the reduction gear.

  • Page 17: Preparation Of Required Components

    Chapter 4 Preparations for installation 4.2. Preparation of required components • The following components (e.g., bolts) and materials are required for installing this product. The customer is required to prepare them by referring to the separately provided “Outer dimensions” drawings and specification sheet. •...
  • Page 18 Chapter 4 Preparations for installation 4.2.1. Installation components The customer is required to prepare the following components used for incorporating the reduction gear into the customer’s equipment.  Case installation component • Prepare the case installation component for the reduction gear. ...
  • Page 19 • Select the appropriate bolt length based on the mounting dimensions of the components prepared by the customer and the reduction gear. • Prepare the following bolts recommended by Nabtesco: Hexagon socket JIS B 1176: 2006 head cap screw Strength class JIS B 1051: 2000 12.9...
  • Page 20 Failure to do so could cause the leakage of lubricant. 4.2.5. Liquid sealant When sealing the shaft mounting surface of the reduction gear and shaft installation component using liquid sealants, prepare the following liquid sealants recommended by Nabtesco. Table 4-2 Name...
  • Page 21 “Outer dimensions” drawings, contact our service representative. For products in which the lubricant is not filled  • Be sure to prepare the Nabtesco-specified lubricant. For purchase of the lubricant, contact our service representative. • Do not mix it with other lubricants.

  • Page 22: Unpacking

    In addition, the rust prevention oil makes the reduction gear slippery. Wipe it off as necessary before use. 4.3.1. Checking the shipping label Check the shipping label to confirm that it matches the product you have ordered. Nabtesco Corporation  Example 型式          ＲＨ−４０Ｅ−１２１ 品目     Ｐ３５ＥＨ００３−０１ ...
  • Page 23 Chapter 4 Preparations for installation 4.3.2. Checking the contents When unpacking, check the contents of the packing box and confirm that all the necessary components are included. Note: The packing material may differ depending on the product. The following illustration should only be referred to as an example.

  • Page 24: Lifting Of This Product

    Chapter 4 Preparations for installation 4.3.3. Label indication A label is attached to the main unit of this product. Model Company logo Serial number QR code (Reading this QR code will display our Website URL and the serial number.) Logo of Precision Reduction Gear RV Fig.

  • Page 25: Chapter 5 Installation

    (Reference: “4.2.2 Reduction gear mounting bolts” and “4.2.3 Serrated lock washer for hexagon socket head cap screw”) The following are the bolt tightening torques specified by Nabtesco. Be sure to check the following when tightening the bolts. Table 5-1 Nominal size ×...

  • Page 26: Installation Work

    Chapter 5 Installation 5.2. Installation work Important  The installation procedure may differ from the contents of this manual, depending on the shape of the components designed by the customer. 5.2.1. Installing the reduction gear The following describes the installation of the reduction gear. •...
  • Page 27 Chapter 5 Installation (1) When the product can be installed as is Perform steps 1 to 4 by taking care regarding the following precautions. Step 1 • Align the mounting holes (or tapped holes) of the reduction gear with the positions of the tapped holes for the case installation component, and then attach the reduction gear to the specified position.
  • Page 28 Chapter 5 Installation Step 4 • Attach the shaft installation component to the reduction gear. • Confirm that the centering shaft of the reduction gear is correctly fitted into the centering hole of the shaft installation component. • Check that there is no foreign matter adhering to the mounting surface. •...
  • Page 29 Chapter 5 Installation Note  A liquid sealant may have been used in the area between the motor flange and reduction gear main unit (middle flange). Due to the effect of the liquid sealant, it may not be possible to remove the motor flange easily only by removing the screws.
  • Page 30 Chapter 5 Installation Step 4 • Align the mating part of the motor flange with that of the reduction gear. Then, closely attach the motor flange to the reduction gear while adjusting the position of the motor flange fixing hole. •...
  • Page 31 Chapter 5 Installation (3) When the reduction gear is shaped in a way its shaft side is not hermetically sealed • Only for type F (Fig. 2-6), perform steps 1 to 3 by taking care regarding the following precautions. For other types, proceed to “5.2.2 Installing the input gear” Step 1 •...
  • Page 32 Chapter 5 Installation When sealing the section with an O-ring by preparing an O-ring groove on the  customer’s component • Fit an O-ring into the groove. • Align the mounting holes of the shaft installation component with the positions of the tapped holes of the reduction gear (shaft section), and then attach the shaft installation component to the reduction gear.
  • Page 33 Chapter 5 Installation Step 2 • Using the hexagon socket head cap screw and serrated lock washer for hexagon socket head cap screw, or high-torque seal washer, fix the shaft installation component to the reduction gear. • Be sure to tighten the hexagon socket head cap screws with the specified tightening torque. (Reference: “4.2.2.
  • Page 34 Chapter 5 Installation Step 1 • Attach a key to the motor shaft. Step 2 • Attach the input gear to the motor shaft. • Check that there is no foreign matter adhering to the mounting surface. Note  If there is foreign matter adhering to the mounting surface, appropriate installation accuracy cannot be obtained.
  • Page 35 Chapter 5 Installation  For straight shafts (attached to motor shaft base) The following is an example when fixing the input gear to the motor shaft using a set screw. Perform steps 1 to 3 by taking care regarding the following precautions. •...
  • Page 36 Chapter 5 Installation  For tapered shafts The following is an example when fixing the input gear to the motor shaft using a draw bolt and a hexagon nut. Perform steps 1 to 4 by taking care regarding the following precautions. •...
  • Page 37 Chapter 5 Installation  When no straight shaft key is provided  For the wedge-type frictional coupling The following is an example when fixing the input gear to the motor shaft using a wedge-type frictional coupling. Perform steps 1 to 5 by taking care regarding the following precautions. •...
  • Page 38 Chapter 5 Installation Plate Step 5 • Check for deviation during rotation at position A of the input gear. If the Enlarged drawing deviation is within 50 µm, the procedure is completed. Step 6 • If the deviation of the input gear Input gear exceeds 50 µm, loosen the hexagon socket head cap screws and perform...
  • Page 39 Chapter 5 Installation Step 3 • Insert the coupling into the motor shaft until the partition plate inside the coupling contacts the tip of the motor shaft. Although the coupling can be inserted smoothly at first, a large friction is generated at the end (for a few millimeters).
  • Page 40 Chapter 5 Installation 5.2.3. Installing the motor Perform steps 1 to 4 by taking care regarding the following precautions. Note: For the reduction gear that is not filled with lubricant, steps 1 and 2 are not necessary. Step 1 • Remove the cap and plastic sheets from the reduction gear.
  • Page 41 Chapter 5 Installation Servo motor Step 2 • When inserting the input gear, release the tapped hole for injecting/draining grease so that Motor Motor flange chamber the internal pressure will not rise. After inserting the input gear, close the tapped hole for Tapped hole for injecting/draining grease.
  • Page 42 Chapter 5 Installation Step 3 • Install the input gear on to the motor shaft, and then directly insert the motor into the reduction gear. At this point, make sure that the motor flange and the motor surface are in close contact without any tilt.
  • Page 43 Chapter 5 Installation Step 4 • Using the hexagon socket head cap screw, fix the motor to the motor mounting flange. • Confirm that the centering shaft of the motor is correctly fitted into the centering hole of the motor mounting flange.

  • Page 44: Chapter 6 Filling The Lubricant

    Before filling the lubricant, take care regarding the following precautions. • If the product is not filled with lubricant, fill it with an appropriate amount of Nabtesco-recommended lubricant before use. • When pneumatic pressure is used for filling the lubricant, set the pressure below 0.03 MPa.
  • Page 45 Chapter 6 Filling the Lubricant Emergency remedy • If the lubricant gets into your eyes, rinse your eyes with clean water for 15 minutes and consult a physician. • If the lubricant contacts the skin, wipe it off completely and thoroughly rinse the affected area with water and soap.

  • Page 46: Reduction Gear Mounting Direction And Amount Of Lubricant

    Chapter 6 Filling the Lubricant 6.2. Reduction gear mounting direction and amount of lubricant The amount of grease the reduction gear requires will differ according to the orientation in which the gear is installed. The target range for filling the lubricant (the areas in the diagram) inside the reduction gear for each mounting direction is indicated below.
  • Page 47 Chapter 6 Filling the Lubricant 6.2.2. Vertical shaft installation The target range for filling the lubricant (the areas in the diagram) inside the reduction gear when the reduction gear is installed in the vertical shaft is indicated below. The amount does not include the space (the areas in the diagram) on the motor mounting side.

  • Page 48: Lubricant Filling Procedure

    Chapter 6 Filling the Lubricant 6.3. Lubricant filling procedure This section describes how to fill the lubricant. If the product is not filled with lubricant, perform steps 1 to 7 by taking care regarding the following precautions. • When handling the lubricant, be sure to wear protective goggles and rubber gloves. ...
  • Page 49 Chapter 6 Filling the Lubricant Step 5 • Rotate the output shaft of the reduction gear by 1 or 2 turns.  Do not use the motor to rotate the output shaft of the reduction gear for safety, if possible. If the motor is used by necessity, run the motor at a low speed and never touch the rotation section.

  • Page 50: Chapter 7 Operation

    Chapter 7 Operation Chapter 7 Operation This chapter describes the operation of the product. 7.1. Checking before operation After installing this product in the customer’s device, check the following points before starting operation. • The lubricant is filled correctly. • Components are fixed with each other correctly.

  • Page 51: Chapter 8 Maintenance And Inspection

    Chapter 8 Maintenance and Inspection Chapter 8 Maintenance and Inspection This chapter describes how to perform maintenance and inspection. 8.1. Precautions on maintenance  Keep away from the rotation section during maintenance/inspection of the device currently in operation. Otherwise, you could be caught by the rotation section, which will result in serious injury. ...

  • Page 52: Lubricant Replacement

    For the lubricants specified by Nabtesco, refer to “4.2.6 Lubricant”. Ambient temperature (°C) 8.3.2. Lubricant replacement procedure Fig. 8-1 This section describes how to replace lubricants.
  • Page 53 Chapter 8 Maintenance and Inspection Step 1 • Rotate the output shaft of the reduction gear so that the tapped holes for injecting/draining grease are positioned diagonally. (When rotating the output shaft using electric power, do not approach the equipment and reduction gear.
  • Page 54 Chapter 8 Maintenance and Inspection  Do not use the motor to rotate the output shaft of the reduction gear for safety, if possible. If the motor is used by necessity, run the motor at a low speed and never touch the rotation section. Otherwise, you could be caught by the rotation section, which will result in serious injury.

  • Page 55: Troubleshooting Checksheet

    Make sure the required number of bolts are tightened uniformly with the specified tightening torque. Make sure the reduction gear, motor, or your company’s components are not installed at a slant. Make sure the specified amount of Nabtesco-specified lubricant has been added. Make sure there are no problems with the motor’s parameter settings.

  • Page 56: Contact Information

    594 Icchoda, Katada-cho, Tsu, Mie 514-8533, Japan TEL: +81-59-237-4672 FAX: +81-59-237-4697  Nabtesco, VIGOGREASE, RV are registered trademarks or trademarks of Nabtesco Corporation.  The contents of this manual are subject to change without prior notice.  The PDF data of this manual can be downloaded from the following website.

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