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Chapter  5  Installation 

22 

When no straight shaft key is provided 

The following is an example when fixing the input spline to the motor shaft using a wedge-type frictional 
coupling. 

Perform steps 1 to 6 by taking care regarding the following precautions.

•  Avoid impact to the motor shaft when attaching the input spline. 

•  Check that there is no foreign matter adhering to the mounting surface. 

•  When attaching the wedge-type frictional coupling, coat the lubricant onto it. 

•  For the lubricant, use the one that does not contain molybdenum antifriction agent. 

 

Avoid impact to the motor shaft when attaching the input spline, as it could damage the motor. 

 

If there is foreign matter adhering to the mounting surface, appropriate installation accuracy cannot 
be obtained. It could cause deterioration of performance, such as abnormal noise and vibration, and 
also lead to damage of the motor. 

 

The transmission torque of the wedge-type frictional coupling varies depending on the motor shaft 
diameter. Due to this, the momentary maximum allowable torque or allowable 
acceleration/deceleration torque may not be ensured. 

Step 1 

•  Assemble the wedge-type frictional coupling (3) into the input spline (1) as shown in Fig. 5-9. 

Step 2 

•  Assemble the plate (2) into the input spline (1), and then temporarily secure it with the hexagon 

socket head cap screws (4). 

Step 3 

•  Press the hole base of the input spline (1) onto the edge of the motor shaft completely. (During 

assembly, the input gear slightly slides.) 

Step 4 

•  Tighten the hexagon socket head cap screws (4) with the recommended tightening torque. After 

tightening, check that the gap X is equal at any point along the circumference. (Reference: Table 
5-1 in “5.2 Bolt tightening torque”) 

•  Check dimensions C to see if the input spline (1) has been assembled as in the specified 

dimensions. For dimensions C, refer to “Outer dimensions”drawing. 

 

If the hexagon socket head cap screws are not tightened with the specified torque, the reduction 
gear does not deliver the designed performance. In addition, it could cause injury and damage to the 
customer’s device and the reduction gear. 

Note 

Summary of Contents for RV RS Series

Page 1: ...ble 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 ...

Page 2: ...About warnings 1 1 1 Type and indication of warning 1 1 2 General precautions 2 1 3 Product Overview 3 Chapter 2 Name of each section 3 2 1 Lubricant 4 2 2 Transportation and Storage of Product 5 Chapter 3 Transportation 5 3 1 Storage 6 3 2 Preparations for Installation 7 Chapter 4 Installation environment 7 4 1 Preparation of required components 8 4 2 Unpacking 11 4 3 Lifting of this product 13 4...

Page 3: ... 25 6 2 Precautions for operation 25 6 3 Servomotor 26 6 4 Maintenance and Inspection 27 Chapter 7 Precautions on maintenance 27 7 1 Daily inspection 27 7 2 Precautions when handling the lubricant 28 7 3 Lubricant replacement 29 7 4 Troubleshooting checksheet 33 7 5 Contact Information ...

Page 4: ...erved and operations that are prohibited in relation to the use of this product but it is also impossible to note all of them in this manual For this reason it is necessary to take appropriate safety measures when operating this product in addition to the points noted in this manual The particularly important information for safe handling of this product is noted below This information applies to ...

Page 5: ...es to ensure safety and well being as this can prevent accidents 3 Sharing of hazard information with users When selling or transferring this product embedded in a device etc hand this manual to the person who actually uses or manages the device the person group in charge Or add the necessary information concerning handling and maintenance procedures for preventing the accidents and failures descr...

Page 6: ...e speakers of English the customer is responsible for conducting safety training and giving operation instructions to those workers 2 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 About This Manual ...

Page 7: ...n 1 above shall not apply if a the defect was caused due to the use of the Product deviated from the Specifications or the working conditions provided by Nabtesco b the defect was caused due to exposure to foreign substances or contamination dirt sand etc c lubricant or spare part other than the ones recommended by Nabtesco was used in the Product d the Product was used in an unusual environment s...

Page 8: ...te Be careful that the momentary excessive torque does not exceed the momentary maximum allowable torque Allowable output speed The allowable value for the reduction gear s output speed during operation without a load is referred to as the allowable output speed Note The reduction gear temperature may exceed 60 C even when the speed is under the allowable speed depending on the operation condition...

Page 9: ...given according to the following four categories in this manual If you fail to observe these warning statements it could result in lethal injury or serious damage and malfunction of the product Indicates a hazardous situation that if not avoided is highly likely to result in death or serious injury Indicates a potentially hazardous situation that if not avoided could result in death or serious inj...

Page 10: ...ar Do not put your fingers or any object into the opening of the reduction gear If a belt or chain is used for connection of the drive sections do not put your fingers or any object into the clearance of the protective cover etc as it could cause injury If any abnormalities or damage to the reduction gear are found stop the operation immediately Incorrect motion could cause injury The reduction ge...

Page 11: ...t Installation reference surface 3 locations Tapped hole for injecting draining grease Component to be rotated Center pipe Wiring and hollow hole for wiring Component to be fixed Base flange Tapped hole for installing motor flange Output flange Tapped hole for injecting draining grease Fig 2 2 Tapped hole for hanging bolt Hole for installing reduction gear Tapped hole for installing component Base...

Page 12: ... is registered trademark of Nabtesco Corporation In order to take advantage of the performance of this product use the Nabtesco specified lubricant Using other types of lubricant could cause deterioration of performance and premature damage Mixing with other lubricants could cause deterioration of performance generation of abnormal noise and premature damage Important Note Fig 2 3 Hole for install...

Page 13: ...sive impact or vibration of the reduction gear Table 3 1 Model Weight kg RS 260A 165 RS 320A 290 RS 900A 480 If the packing boxes containing the reduction gear are stacked too high during transportation they may collapse and fall down causing injury or damage to the reduction gear Applying excessive impact or vibration to the reduction gear could cause damage to the reduction gear The weight shown...

Page 14: ... the reduction gear Store the reduction gear under the same conditions as those before unpacking If it is left upside down it could cause damage to the reduction gear Although the reduction gear is coated with rust prevention oil before shipping it is not designed for long term storage If it is stored for a long period check the condition of the reduction gear periodically and perform rust prevent...

Page 15: ...l to install it it could cause injury in case the equipment goes out of control or falls off When the reduction gear is used for elevating equipment install an effective safety unit for preventing falls caused by idle running as a fail safe mechanism in case of an unexpected failure in the reduction gear If you fail to install it it could cause injury in case the elevating unit falls off Installat...

Page 16: ...ents materials and prepare them at each customer s site If the shape of the actual section differs from the illustration below refer to the separately provided Outer dimensions drawings and specification sheet Prepare the components on the fixed side and the rotation side which have been designed and manufactured either based on the catalog or based on separately provided Outer dimensions drawings...

Page 17: ...component on the rotation side to be attached to the output shaft of the reduction gear Confirm that the design of the prepared component on the rotation side conforms to the size and quantity of the mounting bolts for the output flange indicated in the catalog and in the separately provided Outer dimensions drawings and specification sheet When preparing the component on the rotation side take ex...

Page 18: ...8 4 13 1 2 1 55 10 10 6 16 1 5 1 9 12 12 6 18 1 8 2 2 14 14 6 21 2 0 2 5 16 16 9 24 2 3 2 8 20 20 9 30 2 8 3 55 When using any equivalent washer pay particular attention to its outside diameter ø D and to the strength of the spring washer Liquid sealant 4 2 4 When using a liquid sealant to seal the sections between the reduction gear and the motor flange and between the motor flange and the motor ...

Page 19: ... to the workers or damage to the reduction gear Before using this product check the contents of the packing box and confirm that all the ordered items are included If an incorrect part is installed it could cause injury to the workers or damage the customer s device and the reduction gear If it is left upside down it could cause damage to the reduction gear Refer to Fig 4 3 for the direction The r...

Page 20: ...d Write them down when unpacking and keep them for cases in which they are needed The model and serial number indicated on the label may be used The contents of the packing box and shape of the reduction gear may differ from the illustration above depending on the ordered specifications The motor flange and input spline may not be included in the packing box Label indication 4 3 2 A label is attac...

Page 21: ...del Hanging bolt Nominal size pitch mm RS 260A M12 1 75 RS 320A M12 1 75 RS 900A M16 2 0 Do not enter the area under the reduction gear when lifting the reduction gear If the reduction gear falls down it could cause injury When lifting the reduction gear be sure to use a lifter that can withstand the weight of the reduction gear Otherwise the lifter will be damaged and the reduction gear could fal...

Page 22: ...duction unit is not designed to support a load Do not use the reduction gear in any way that applies a load to the center pipe The oil seals may become deformed which could eventually cause leakage of the lubricant Installation position 5 1 When installing the reduction gear in the horizontal shaft position do not position the input shaft motor upward Install the reduction gear with the input shaf...

Page 23: ...que values listed are for steel or cast iron material If aluminum or stainless steel is used for the bolt limit the tightening torque When tightening the bolt with the limited torque confirm that there is no strength problem by taking the transmission torque and load moment into due consideration Installation work 5 3 The installation procedure may differ from the contents of this manual depending...

Page 24: ...torque refer to Table 5 1 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 such as abnormal noise and torque irregularity and durability When installing the component on the fixed side take extra care not to cover the tapped holes for injecting draining grease If the tapped holes ar...

Page 25: ...the mounting surface the mounting surface of the reduction gear may be deformed which could cause deterioration of performance such as abnormal noise and torque irregularity and durability When installing the component on the rotation side take extra care not to cover the tapped holes for injecting draining grease If the tapped holes are covered it will be difficult to replace the lubricant If the...

Page 26: ...reduction gear may be deformed which could cause deterioration of performance such as abnormal noise and torque irregularity and durability Step 4 Using the provided hexagon socket head cap screw install the motor flange on the reduction gear Tighten the provided hexagon socket head cap screws equally with the specified bolt tightening torque For the bolt tightening torque refer to Table 5 1 Table...

Page 27: ... there is no foreign matter adhering to the mounting surface If there is foreign matter adhering to the mounting surface appropriate installation accuracy cannot be obtained It could cause deterioration of performance such as abnormal noise and vibration and also lead to damage of the motor Step 3 Fix the input spline retainer 2 to the motor shaft using the hexagon socket head cap screw 3 Using a ...

Page 28: ...is no foreign matter adhering to the mounting surface If there is foreign matter adhering to the mounting surface appropriate installation accuracy cannot be obtained It could cause deterioration of performance such as abnormal noise and vibration and also lead to damage of the motor Step 3 Tighten the input spline 1 to the motor shaft using the set screw 2 Using a thread locking sealant for screw...

Page 29: ...or it may damage the input shaft Step 1 Attach the Woodruff key 4 to the motor shaft Step 2 Attach the input spline 1 to the motor shaft Check that there is no foreign matter adhering to the mounting surface If there is foreign matter adhering to the mounting surface appropriate installation accuracy cannot be obtained It could cause deterioration of performance such as abnormal noise and vibratio...

Page 30: ...ries depending on the motor shaft diameter Due to this the momentary maximum allowable torque or allowable acceleration deceleration torque may not be ensured Step 1 Assemble the wedge type frictional coupling 3 into the input spline 1 as shown in Fig 5 9 Step 2 Assemble the plate 2 into the input spline 1 and then temporarily secure it with the hexagon socket head cap screws 4 Step 3 Press the ho...

Page 31: ...e input spline Use the O ring that is provided with the reduction gear main unit Step 2 Install the input spline on to the motor 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 Do not forcibly press down on the motor If the motor is forcibly pressed down it could damage the input sp...

Page 32: ...k that there is no foreign matter adhering to the mounting surface If there is foreign matter adhering to the mounting surface appropriate installation accuracy cannot be obtained It could cause deterioration of performance such as abnormal noise and vibration and also lead to damage of the motor Tighten the motor mounting bolt using the tightening torque specified by the motor manufacturer Note F...

Page 33: ... 1 Precautions for operation 6 3 Once the pre operation checks and running in operation are completed operate the device safely by observing the following precautions Keep away from the rotation section during operation of the device or until it is completely stopped Otherwise you could be caught by the rotation section which will result in serious injury If any abnormalities such as abnormal nois...

Page 34: ...tion torque Output speed Set the maximum output speed and maximum operating speed for the servomotor as follows Servomotor maximum output speed maximum operating speed Actual reduction ratio Reduction gear allowable output speed RS Series rating table Table 6 1 Model Actual reduction ratio Rated torque Allowable acceleration deceleration torque Momentary maximum allowable torque Allowable output s...

Page 35: ...e protective goggles gloves and safety shoes Organize the surrounding area and ensure safety to prevent secondary accidents To maintain the condition in which the device is completely stopped turn OFF the power to the customer s device and take extra care so that the power will not be turned ON by accident Daily inspection 7 2 Check the following items every day before starting the operation Table...

Page 36: ...e 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 If the lubricant is inhaled move to a fresh air location and cover your body with a blanket to keep yourself warm and calm Then consult a physician If the lubricant is swallowed d...

Page 37: ...0A prepare as much Molywhite RE00 as needed according to the number of units For the amount of lubricant refer to Table 7 2 Seal tape Tightening tool Prepare the tightening tool based on Table 7 3 Amount of specified lubricant Table 7 2 Model Required amount cc kg RS 260A 3 900 3 5 RS 320A 5 200 4 5 RS 900A 17 000 14 8 Plug size and tightening torque Table 7 3 Frame number Grease drainage side Gre...

Page 38: ... 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 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 When rotati...

Page 39: ...p could be reversed If the internal pressure of the reduction gear increases oil seals could fall off or lubricant could leak Step 6 Inject the lubricant until it overflows from the tapped hole for injecting draining grease on the drain side Step 7 Remove the injector from the grease nipple and plug the tapped holes for injecting draining grease on both the greasing and drain sides Step 8 Rotate t...

Page 40: ...ut shaft rotation speed is 5 to 10 rpm Then rotate the motor for about one minute Perform steps 1 to 9 again Set the rotation speed based on the output shaft conversion by taking the customer s operation conditions into account Step 11 Attach the hexagon socket head cap plugs and other parts removed in step 2 above to the tapped holes for injecting draining grease with the specified tightening tor...

Page 41: ...parameter settings Make sure there are no components resonating in unity Make sure the input spline is appropriately installed on the motor Make sure there is no damage to the surface of the input spline teeth Make sure the input spline specifications precision number of teeth module shift coefficient dimensions of each part are correct Make sure the flange and other components are designed and ma...

Page 42: ... Sales Office 21st Fl Dojima Avanza 1 6 20 Dojima Kita ku Osaka 530 0003 Japan TEL 81 6 6341 7180 FAX 81 6 6341 7182 Tsu Plant 594 Icchoda Katada cho Tsu Mie 514 8533 Japan TEL 81 59 237 4600 FAX 81 59 237 4610 Service Center 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...

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