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Precision Reduction Gear
N
series
Operation Manual
<Applicable model>
RV-N△
above indicates the torque code.
△ above indicates the series code.
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
ERD15003B
Oct 1, 2016
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Table of Contents
Related Manuals for Nabtesco RV N Series
Summary of Contents for Nabtesco RV N Series
- Page 1 ® Precision Reduction Gear series Operation Manual <Applicable model> RV-N△ above indicates the torque code. △ above indicates the series code. 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.
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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 ...................... - Page 3 7.3. Precautions for operation ........................39 Chapter 8 Maintenance and Inspection ..............41 8.1. Precautions on maintenance ......................41 8.2. Daily inspection ..........................41 8.3. Lubricant replacement ........................42 Appendix: Design Scheme of Input Gear ..............44 NABTESCO CONTACT INFORMATION...
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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 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... -
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
Note This reduction gear is not filled with lubricant. Fill the reduction gear with an appropriate amount of Nabtesco-recommended lubricant before use. Failure to do so could cause damage to the reduction gear. Return the tools and other necessary items to the specified location after use. If a tool, bolt, nut, or other foreign object is trapped in the system, it could cause damage to the reduction gear. -
Page 11: Chapter 2 Product Overview
Chapter 2 Product Overview Chapter 2 Product Overview This chapter describes provides 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 “External dimensions”... -
Page 12: 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 “External dimensions”... -
Page 13: 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 14: 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 15: Preparation Of Required Components
Chapter 4 Preparations for Installation Important If the required installation environment cannot be established / met, refer to our contact information in advance. When using this product under special conditions (clean room, equipment for food, medical equipment, concentrated alkali, high-pressure steam, etc.), refer to our contact information in advance. - Page 16 Chapter 4 Preparations for Installation 4.2.1. Input gear • Prepare the input gear for motor rotation into the reduction gear. For the design of the input gear, refer to “Appendix: Design Scheme of Input Gear”. The prepared gear teeth must meet the specifications and materials described in “Appendix: Design Scheme of Input Gear”.
- Page 17 Chapter 4 Preparations for Installation 4.2.2. Flange and its installation components Motor mounting flange • Prepare the motor mounting flange for fixing the motor on the reduction gear input side. • In order to avoid contact with reduction gear components, refer to the sizes indicated in the “External dimensions”...
- Page 18 Chapter 4 Preparations for Installation Confirm that the design of the prepared motor mounting flange conforms to the size and quantity of the case mounting bolts indicated in the separately provided “External dimensions” drawings and specification sheet. For the catalog products described in “2.2. Parts codes of catalog products”, refer to the size and quantity of the bolts listed in Table 4-2 in “4.2.3 Reduction gear mounting bolts”.
- Page 19 Table 4-2 and Table 4-3. • 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...
- Page 20 Chapter 4 Preparations for Installation 4.2.4. Serrated lock washer for hexagon socket head cap screw Prepare the following Serrated lock washer for a hexagon socket head cap screw recommended by Nabtesco. Name: Belleville spring washer (made by Heiwa Hatsujyo Industry Co., Ltd.)
- Page 21 Chapter 4 Preparations for Installation 4.2.5. O-rings Use the O-rings indicated in the separately provided “External dimensions” drawings and specification sheet. If there is no indication, select the size of the O-ring appropriate for the surface to be sealed. For the catalog products described in “2.2. Parts codes of catalog products”, prepare the O-rings with the numbers listed in Table 4-5 and Table 4-6.
- Page 22 ø199.3 ø5.7 4.2.6. 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 4-7 Brand specified by Nabtesco Manufacturer Characteristics and applications •...
- Page 23 Chapter 4 Preparations for Installation 4.2.7. Lubricant • Prepare the Nabtesco-specified lubricant. For purchase of the lubricant, refer to our contact information. • Do not mix it with other lubricants. Table 4-8 Brand VIGOGREASE* RE0 Operating temperature range (ambient -10 to 40°C temperature) * VIGOGREASE is registered trademark of Nabtesco Corporation.
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Page 24: Unpacking
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. Example Nabtesco Corporation 型式 RV-42N-105 品目 P40AN003D00 S/N R042-2E30001 ｲﾝﾌﾟｯﾄｷﾞﾔ ｷｬｸｻｷ... - Page 25 Chapter 4 Preparations for Installation 4.3.2. Checking the contents Confirm that the contents of the packing box match the items in the illustration below when unpacking. Cautions to the reduction gear when it is installed Input gear (Optional) Reduction gear main unit Packing material Fig.
- Page 26 Fig. 4-6 Important This label proves that this product is a Nabtesco precision reduction gear. Be careful not to peel off the label. 4.3.4. About sealing tape Sealing tape that has a clear left half and yellow right half is affixed to the label as shown in the photo below.
- Page 27 Chapter 4 Preparations for Installation (2) Peel off about two-thirds of the first tape toward the left. Fig. 4-8 (3) After that, pull it toward the right in order to peel off the yellow portion of the second tape. Check that the yellow portion is removed from the surface after the tape has been peeled off. Fig.
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Page 28: Lifting Of This Product
Chapter 4 Preparations for Installation 4.4. Lifting of this product When lifting the product, use the tap holes for the hanging bolts described in the separately provided “Outer dimensions” drawings and specifications. Do not enter the area under the reduction gear when lifting the reduction gear. ... -
Page 29: Chapter 5 Installation
(Reference: “4.2.3 Reduction gear installation bolts” and “4.2.4 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 30: 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. Perform steps 1 to 7 by taking care regarding the following precautions. - Page 31 Chapter 5 Installation Step 2 Insert the O-ring (I) into the groove on the case for the reduction gear. (Reference: “4.2.5 O-rings”) Reduction gear Note Some reduction gear may not have O-rings (I) groove, depending on the ordered specifications. In such a case, prepare a groove on the customer’s component, or seal the area with a liquid sealant indicated in “4.2.6 Liquid sealant”.
- Page 32 Chapter 5 Installation Note If the O-ring is caught by the mating section, it could cause leakage of the lubricant. If there is foreign matter adhering to the mounting surface, the mounting surface of the reduction gear may be deformed, which could cause deterioration of performance and durability. ...
- Page 33 Chapter 5 Installation Step 5 Attach the O-ring to the shaft mounting surface Reduction gear of the reduction gear. • If the model does not have an O-ring groove or an O-ring cannot be used due to its structure, seal the section by using a liquid sealant, etc. ...
- Page 34 Chapter 5 Installation Note If a coating is not applied at some points within the coating range, it could cause leakage of the lubricant. When a liquid sealant is used, if it leaks into the reduction gear, it could cause deterioration of performance, such as abnormal noise, vibration, and torque irregularity.
- Page 35 Chapter 5 Installation Note If the O-ring is caught by the mating section, it could cause leakage of the lubricant. If there is foreign matter adhering to the mounting surface, the mounting surface of the reduction gear may be deformed, which could cause deterioration of performance and durability. ...
- Page 36 Chapter 5 Installation 5.2.2. Installing the input gear For straight shafts (attached to motor shaft tip) The following is an example when fixing the input gear to the motor shaft using a bolt. Perform steps 1 to 3 by taking care regarding the following precautions. •...
- Page 37 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 38 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 hexagonal nut. Perform steps 1 to 4 by taking care regarding the following precautions. •...
- Page 39 Chapter 5 Installation 5.2.3. Installing the motor Install the motor with an attached input gear in the reduction gear already mounted with the motor mounting flange. The following is an installation example when sealing the input gear with an oil seal. Perform steps 1 to 3 by taking care regarding the following precautions.
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Page 40: Chapter 6 Filling The Lubricant
Before filling the lubricant, take care regarding the following precautions. • This product is not filled with lubricant when shipped from Nabtesco. Before operating the product, be sure to fill it with an appropriate amount of lubricant specified by Nabtesco. - Page 41 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.
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Page 42: 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 lubricant the reduction gear requires will differ according to the direction in which the gear is installed. The amount of lubricant required and the target range (the areas in the diagram) for each mounting direction of the catalog products described in “2.2 Parts codes of catalog products”... - Page 43 Chapter 6 Filling the Lubricant Note Be sure to leave a space about 10% of the total volume. If overfilled, the temperature increases during operation and the internal pressure also increases. As a result, an oil seal could fall off or lubricant could leak.
- Page 44 Chapter 6 Filling the Lubricant Table 6-2 Internal Internal Required Dimensions Required Dimensions capacity of capacity of amount amount Model Model reduction gear reduction gear (cc) (cc) (mm) (cc) (cc) (mm) RV-25N (190) 32.2 RV-125N (759) 40.7 RV-42N (322) 32.5 RV-160N 1,036 (886)
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Page 45: Lubricant Filling Procedure
Chapter 6 Filling the Lubricant 6.3. Lubricant filling procedure This section describes how to fill the 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 46 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.
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Page 47: Chapter 7 Operation
• The mounting bolts are tightened securely. • The rotation section rotates in the desired direction. 7.2. Break-in operation We recommend performing the break-in operation after filling the Nabtesco-specified lubricant. Important After filling the lubricant, abnormal noise or torque irregularity may occur during operation. If such symptoms are cleared when you perform the break-in operation for more than 30 minutes (until the surface temperature of the reduction gear reaches about 50°C), there is no problem with its quality. - Page 48 Chapter 7 Operation The reduction gear could be extremely hot during operation. After stopping the operation, never touch the reduction gear until it is completely cooled. Touching the reduction gear could cause burns. Do not operate the reduction gear under a condition that exceeds the allowable acceleration/deceleration torque, allowable moment, and allowable output speed.
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Page 49: 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. You could get caught by the rotation section, which will result in serious injury. ... -
Page 50: Lubricant Replacement
For the lubricants specified by Nabtesco, refer to “4.2.7 Lubricants”. Ambient temperature (°C) Fig. 8-1 8.3.2. Lubricant replacement procedure This section describes how to replace lubricants. - Page 51 Chapter 8 Maintenance and Inspection Note If the lubricant is overfilled, there is a possibility of high internal pressure and that an oil seal could fall off, the lip could be reversed, or lubricant could leak. If the lubricant is insufficient, a lubrication failure could occur and the reduction gear could be damaged.
- Page 52 Chapter 8 Maintenance and Inspection Step 8 • 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 53 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.
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Page 54: Appendix: Design Scheme Of Input Gear
Appendix: Design Scheme of Input Gear Appendix Design scheme of input gear We have a variety of standard input gears for each model and reduction ratio that can be additionally machined by the customer. Please machine and install the standard input gear based on the customer’s intended use, by referring to the following examples. - Page 55 Appendix: Design Scheme of Input Gear Selection of the input gear type There are the following two types of standard input gear: Standard input gear A: For small motors Standard input gear B: For large motors Select the type of input gear to be used by referring to the tables below. Applicable motor shaft diameters for standard input gear (Unit: mm)
- Page 56 Appendix: Design Scheme of Input Gear <Design example 2: For straight shafts (attached to motor shaft base)> (Plunge grinding range) Tapped hole for set screw Drill both at the same time Image of assembly Clearance Installation reference surface Note 1. When a tapped hole is not used for the motor shaft, fix the input gear to the motor shaft with a set screw. 2.
- Page 57 Appendix: Design Scheme of Input Gear <Design example 3: For tapered shafts> Tapered to d5 drill 1/10 Note 1. For the bolt through hole diameter (d3), radial runout, and the shaft hole position (LC), refer to “Dimensions after modification” in the “Dimensions” table on pages 48 and 49. 2.
- Page 58 Appendix: Design Scheme of Input Gear Standard input gear dimensions...
- Page 59 Appendix: Design Scheme of Input Gear...
- Page 60 Appendix: Design Scheme of Input Gear Gear tooth specifications Refer to the specifications and materials shown in the following tables when designing with a processed or non-standard input gear.
- Page 61 Appendix: Design Scheme of Input Gear...
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Page 62: Nabtesco Contact Information
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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