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Chapter 6 Filling the Lubricant

38

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.
Otherwise, you could be caught by the rotation section, which will result in serious injury.

Step 6

Repeat

steps 1 to 5

until the lubricant is filled up to the specified level.

Step 7

After filling the lubricant up to the specified level, wipe the lubricant off from the tapped holes for

injecting/draining grease and cap them with plugs sealed with a seal tape, etc.

Fig. 6-3

Horizontal shaft installation

Vertical shaft installation

(with shaft facing downward)

Vertical shaft installation

(with shaft facing upward)

Shaft
installation
component

Shaft installation component

Shaft installation
component

Filler

Filler

Filler

Motor mounting flange

Motor mounting flange

Motor mounting flange

Tapped hole for injecting/draining

grease (supply side)

Tapped hole for injecting/draining
grease (drain side)

Tapped hole for injecting/draining
grease (drain side)

Tapped hole for
injecting/draining
grease (drain side)

Tapped hole for injecting/

draining grease (supply side)

Tapped hole for injecting/

draining grease (supply side)

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Summary of Contents for RV N Series

Page 1: ... 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 ...

Page 2: ...y 1 1 1 About warnings 1 1 2 Type and indication of warning 1 1 3 General precautions 2 Chapter 2 Product Overview 3 2 1 Name of each section 3 2 2 Parts codes of catalog products 3 Chapter 3 Transportation and Storage of Product 4 3 1 Transportation 4 3 2 Storage 5 Chapter 4 Preparations for Installation 6 4 1 Installation environment 6 4 2 Preparation of required components 7 4 3 Unpacking 16 4 ...

Page 3: ...4 6 3 Lubricant filling procedure 37 Chapter 7 Operation 39 7 1 Checking before operation 39 7 2 Break in operation 39 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 Contents ...

Page 4: ...d 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 all work...

Page 5: ...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 describe...

Page 6: ...eakers 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 iii ...

Page 7: ... 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 such...

Page 8: ...l 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 Depending on the conditions of use duty ratio load ambient temperature the reduction gear surface temperature may exceed 60 C even when the spee...

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: ...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 gear could be extremely hot during operation After stopping the operation never touch the reduction gear befo...

Page 11: ...l dimensions drawings and specification sheet If anything is unclear refer to our contact information Parts codes of catalog products Example P40AN001B00 P40AN001D00 The third digit from the end of the parts number B or D indicates a catalog product Any other codes indicate products not included in the catalog For the parts number check Parts number indicated on the shipping label of the product F...

Page 12: ...ct or vibration of the reduction gear Table 3 1 Model Weight kg Model Weight kg RV 25N 3 8 RV 125N 13 9 RV 42N 6 3 RV 160N 22 1 RV 60N 8 9 RV 380N 44 RV 80N 9 3 RV 500N 57 2 RV 100N 13 0 RV 700N 102 If the packing boxes containing the reduction gear are stacked too high during transportation they may collapse and fall down and cause injury or damage to the reduction gear Applying excessive impact ...

Page 13: ...o 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 preven...

Page 14: ...tall an effective safety unit 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 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 fail...

Page 15: ...ecification sheet Prepare the input gear motor mounting flange case installation component and shaft installation component that have been designed and manufactured based on the separately provided External dimensions drawings specification sheet and catalog Fig 4 1 If O ring II and high torque seal washer cannot be used use the liquid sealants The actual components may differ from the required co...

Page 16: ... has an oil sealing surface take extra care so that no scratch will be made on the oil sealing surface when handling the input gear Any scratches could cause the leakage of lubricant Take extra care so that no scratch will be made on the gear tooth section when handling the input gear Any scratches could cause abnormal noise The customer is requested to prepare the oil seals used for sealing the c...

Page 17: ...nge Confirm that a tapped hole for injecting draining grease is installed in the motor mounting flange It will be necessary for filling or replacing the lubricant after installing the reduction gear Design the motor mounting flange to the following accuracy If the installation accuracy is poor it will result in vibration noise and increase in backlash If a model other than those listed below is us...

Page 18: ...eet 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 Shaft installation component Prepare the installation component for the output shaft of the reduction gear Confirm that the component is structured so that the lubricant can be sealed with an O ring or liquid sealant Co...

Page 19: ...omer and the reduction gear Prepare the following bolts recommended by Nabtesco Hexagon socket head cap screw JIS B 1176 2006 Strength class JIS B 1051 2000 12 9 Thread JIS B 0209 2001 6 g For motor mounting flange and case installation component Table 4 2 For shaft installation component Table 4 3 Model Nominal size pitch mm Required Qty Model Nominal size pitch mm Required Qty RV 25N M5 0 8 16 R...

Page 20: ...td Corporation symbol CDW H CDW L Only for M5 Material S50C to S70C Hardness HRC40 to 48 Table 4 4 When using any equivalent washer select it with special care given to its outside diameter D Nominal size ID and OD of Belleville spring washer t H ød øD 5 5 25 8 5 0 6 0 85 6 6 4 10 1 0 1 25 8 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 18 18 9 27 2 6 ...

Page 21: ...isted in the table below If an O ring cannot be used due to the structure seal the section using a liquid sealant etc Reference 4 2 6 Liquid sealant O ring I JIS B 2401 2012 SAE AS568 Table 4 5 Unit mm Unit mm Model O ring number O ring dimensions Model O ring number O ring dimensions Inside diameter Width Inside diameter Width RV 25N S110 ø109 5 ø2 0 RV 125N AS568 167 ø177 47 ø2 62 RV 42N AS568 1...

Page 22: ...sing liquid sealants prepare the following liquid sealants recommended by Nabtesco Table 4 7 Brand specified by Nabtesco Manufacturer Characteristics and applications ThreeBond 1211 ThreeBond Silicone based solventless type Semi dry gasket HermeSeal SS 60F Nihon Hermetics Co One part non solvent elastic sealant Metal contact side flange surface seal Any product basically equivalent to ThreeBond 12...

Page 23: ...co 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 4 2 8 Plug for injecting draining grease Prepare a plug for injecting dra...

Page 24: ... extra care so that no foreign matter adheres to the reduction gear when it is installed in the customer s equipment and filled with lubricant If foreign matter adheres it may lead to deterioration of reduction gear performance and also to deterioration of durability or premature damage The reduction gear is coated with rust prevention oil before shipping Therefore if it is used as it is the rust ...

Page 25: ...he illustration below when unpacking Fig 4 5 The contents of the packing box and shape of the reduction gear may differ from the illustration above depending on the ordered specifications The input gear is optional Cautions to the reduction gear when it is installed Input gear Optional Reduction gear main unit Packing material Important ...

Page 26: ...ing tape to make the label visible Note When the customer uses a substance other than urethane or epoxy contact us Even when coating is not performed on the circumference of the reduction gear the sealing tape may peel off and enter the customer s equipment For this reason be sure to peel off the sealing tape Note When degreasing the reduction gear do not use the degreasing agents shown below Keto...

Page 27: ...later and enter the reduction gear This may cause deterioration of performance such as abnormal noise vibration or torque irregularity Also this tape may adhere to the lip of the oil seal causing leakage of the lubricant If a coating or degreasing agent other than those specified is used the label tape may peel off and enter the reduction gear This may cause deterioration of performance such as ab...

Page 28: ... products use the following hanging bolts Table 4 9 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 fall down and topple over which may resu...

Page 29: ...o prevent the bolt from loosening and protect the bolt seat surface from flaws 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 pitch mm Tightening torque Nm Tightening force N M5 0 8 9 ...

Page 30: ...gear with the positions of the tapped holes for the case installation component and then attach the reduction gear to the case installation component Confirm that the centering location of the reduction gear case section is correctly fitted into the centering location of the case installation component Check that there is no foreign matter adhering to the mounting surface If there is foreign matte...

Page 31: ...ection It could deteriorate the bolt tightening force and could result in deterioration of the transmission torque When a liquid sealant is used follow the instructions of the detailed coating method given by the manufacturer of the sealant to be used Step 3 Align the mounting holes of the motor mounting flange with the mounting holes of the reduction gear case section and positions of the tapped ...

Page 32: ...rrated lock washer for a hexagon socket head cap screw tighten each component Be sure to tighten the specified number of hexagonal socket head cap screws with the specified tightening torque Reference 4 2 3 Reduction gear mounting bolts 4 2 4 Serrated lock washer for hexagon socket head cap screw and 5 1 Bolt tightening torque If the hexagonal socket head cap screw is not tightened with the specif...

Page 33: ...lso be provided on some products not included in the catalog In such a case attach the O rings indicated in the separately provided External dimensions drawings and specification sheet When sealing with a liquid sealant When sealing the section with a liquid sealant coat the liquid sealant onto the section at the shaft edge For the coating area refer to the illustration on the right Apply coating ...

Page 34: ...ually result in deterioration of the transmission torque Step 6 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 mounting component to the reduction gear When an O ring is used take extra care so that the O ring is not caught by the mounting surface Confirm that the centering location o...

Page 35: ...ed lock washer for a hexagon socket head cap screw fix the shaft installation component to the reduction gear Be sure to tighten the specified number of hexagonal socket head cap screws with the specified tightening torque Reference 4 2 3 Reduction gear mounting bolts 4 2 4 Serrated lock washer for hexagon socket head cap screw and 5 1 Bolt tightening torque If the hexagonal socket head cap screw ...

Page 36: ... than the root circle diameter of the input gear the bolt and seal washer will interfere with the spur gear and therefore the gear cannot be installed or could be damaged 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 If foreign matter adheres to the mounting surface appropriate installat...

Page 37: ...motor If any particle adheres to the mounting surface appropriate installation accuracy cannot be obtained It could lead to premature damage of the reduction gear or motor Step 1 Attach a key to the motor shaft Step 2 Attach the input gear to the motor shaft Step 3 Tighten the input gear to the motor shaft using the set screw Using the locking agent for screws lock the set screw If a thread lockin...

Page 38: ...to the mounting surface appropriate installation accuracy cannot be obtained It could lead to premature damage of the reduction gear or motor If the outer diameters of the hexagonal nut and seal washer are larger than the diameter of the teeth bottom of the input gear the hexagonal nut and seal washer will interfere with the spur gear and therefore the gear cannot be installed or could be damaged ...

Page 39: ...ction of the input gear scratches the lip surface of the oil seal it could cause leakage of the lubricant If the gear section is scratched due to interference between the input gear and spur gear it could cause abnormal noise Step 3 Using the hexagonal socket head cap screw fix the motor to the motor mounting flange Confirm that the centering location of the motor is correctly fitted into the cent...

Page 40: ...al pressure also increases As a result an oil seal could fall off or lubricant could leak If the filling amount of the lubricant is insufficient it could cause premature damage to the reduction gear 6 1 Precautions when handling the lubricant This section describes the precautions when handling lubricants Before handling the lubricant read the precautions described on the container of the lubrican...

Page 41: ...ult a physician If the lubricant is swallowed do not force yourself to vomit and consult a physician Disposal of waste grease and container It is required by law to dispose of the grease and container in the specified manner Dispose of the grease and container appropriately according to the law If anything is unclear check the disposal precautions described in the Safety Data Sheet or refer to our...

Page 42: ...f there is a blank space also fill the space Leave a space about 10 of the total volume of the internal capacity of the reduction gear the areas in the diagram and the space for the installation component the areas in the diagram For the amount of lubricant for the catalog products described in 2 2 Parts codes of catalog product refer to our contact information Table 6 1 Model Internal capacity of...

Page 43: ...uction gear is installed in the vertical shaft are indicated below Each amount does not include the space the areas in the diagram on the motor mounting side Therefore if there is a blank space also fill the space Leave a space about 10 of the total volume of the internal capacity of the reduction gear the areas in the diagram and the space for the installation component the areas in the diagram F...

Page 44: ...4 62 2 1 Density of VIGOGREASE RE0 0 9 g cc 2 a does not correspond to the crank shaft tip position 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 The shape of the reduction gear may differ from the illustration in Fig 6 2 above dep...

Page 45: ... grease on the drain side When pneumatic pressure is used for filling the lubricant set the pressure below 0 03 MPa If you fail to remove the plug for injecting draining grease on the drain side the internal pressure increases As a result the oil seal could fall off or the oil seal lip could be reversed If the internal pressure of the reduction gear increases an oil seal could fall off or lubrican...

Page 46: ...t off from the tapped holes for injecting draining grease and cap them with plugs sealed with a seal tape etc Fig 6 3 Horizontal shaft installation Vertical shaft installation with shaft facing downward Vertical shaft installation with shaft facing upward Shaft installation component Shaft installation component Shaft installation component Filler Filler Filler Motor mounting flange Motor mounting...

Page 47: ...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 During the break in operation check the items in Table 8 1 7 3 Precautions for operation Once the pre operation checks and break in operation are completed operate the device safely by observing the following precaution...

Page 48: ...r under a condition that exceeds the allowable acceleration deceleration torque allowable moment and allowable output speed Otherwise it could cause injury to the workers and damage to the reduction gear Operate the reduction gear while the surface temperature is below 60 C Failure to do so could cause premature damage When the reduction gear is used with the surface temperature within 40 to 60 C ...

Page 49: ...wing precautions and ensure safety Wear appropriate clothing and protective gear including the 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...

Page 50: ...r as necessary For the lubricants specified by Nabtesco refer to 4 2 7 Lubricants 8 3 2 Lubricant replacement procedure This section describes how to replace lubricants 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 When replacing the lubricant turn OFF the power source e g power supply and ex...

Page 51: ...g grease Check the amount of drained lubricant by catching it with a container etc in order to control the same amount of lubricant to be drained and filled Always drain the lubricant while the reduction gear is cooled If the tapped hole for injecting draining grease is unplugged while the reduction gear is still hot high temperature lubricant sprays out which could cause burns Step 4 Attach a gre...

Page 52: ...e minute Set the rotation speed based on the output shaft conversion by taking the customer s operation conditions into account Step 11 Perform steps 1 and 9 again Step 12 Attach the hexagon socket head cap plug to the tapped hole for injecting draining grease Replace the seal tape with a new one Step 13 Wipe off the lubricant adhering to the surrounding completely Shaft installation component Dra...

Page 53: ...or s parameter settings Make sure there are no components resonating in unity Make sure the input gear is appropriately installed on the motor Make sure there is no damage to the surface of the input gear teeth Make sure the input gear specifications precision number of teeth module shift coefficient dimensions of each part are correct Make sure the flange and other components are designed and man...

Page 54: ...otors Note The above drawing shows the shape before the additional machining is performed Check the dimensions of each section in the Dimensions table on pages 48 and 49 Reference for additional machining Standard input gears come equipped with center holes When modifying them be sure to grind the boss outer diameter D1 with reference to the center hole and use it as the reference surface Design o...

Page 55: ...n example 1 For straight shafts attached to motor shaft tip Note 1 When a tapped hole is used for the motor shaft fix the input gear to the motor shaft with a bolt 2 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 3 If the bolt through hole diameter d3 is larger than the center hole...

Page 56: ...oove d2 so that it is larger than the corner of the key slot Although the above calculation formula is used in this example design the diameter using appropriate values based on the key groove tolerance processing tolerance etc The following is an example of when the diameter of the recessed groove is selected based on the above calculation formula Use it as a reference when designing Selection ex...

Page 57: ...e 1 The design specifications vary depending on the oil seal manufacturer When designing be sure to confirm with the manufacturer of the oil seal to be used 2 If the plunge grinding diameter D2 is processed using a value other than those listed in the Dimensions table on pages 48 and 49 appropriate surface hardness may not be obtained 3 Rubber containing fluorine is recommended for the material of...

Page 58: ...Appendix Design Scheme of Input Gear 50 Standard input gear dimensions ...

Page 59: ...Appendix Design Scheme of Input Gear 51 ...

Page 60: ...Appendix Design Scheme of Input Gear 52 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 53 ...

Page 62: ...ys assigned to the precautions indicated on this product or in the documents included with this product Unauthorized reprinting reproduction copying or translation of this catalog in whole or in part is strictly prohibited Europe and Africa Nabtesco Precision Europe GmbH Tiefenbroicher Weg 15 40472 Düsseldorf Germany TEL 49 211 173790 FAX 49 211 364677 E MAIL info nabtesco de www nabtesco de North...

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