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No.000181 Reduces the Thrust Load of a Small-size Motor Shaft
Good IDEA!
5

Reducing the thrust load without using a coupling.

Relevant category

Thrust Needle Roller Bearings

Thrust Needle Roller Bearings
Product name Thrust Needle Roller Bearings
Part number BA0619
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes | Performance info.

Selection criteria

Suitable item to support thrust load

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Available sizes

■Thrust Needle Roller Bearings

Material: 52100 Bearing Steel

(Name No.) Thrust Needle Roller with Retainer Thrust Washer x 2
Hole Dia. O.D. Overall Thickness Hole Dia. O.D. Plate Thickness
Tolerance Tolerance Tolerance Tolerance Tolerance Tolerance
BA0414 φ4 +0.14/
+0.02 		φ14 -0.095/
-0.365 		2 0/-0.01 φ4 +0.2/
+0.02 		φ14 -0.032/
-0.302 		1 +0.05/
-0.05
BA0515 φ5 φ15 φ5 φ15
BA0619 φ6 φ19 -0.110/
-0.440 		φ6 φ19 -0.040/
-0.370
BA0821 φ8 +0.175/
+0.025 		φ21 φ8 +0.245/
+0.025 		φ21
BA1024 φ10 φ24 φ10 φ24
BA1226 φ12 +0.212/
+0.032 		φ26 φ12 +0.302/
+0.032 		φ26
BA1528 φ15 φ28 φ15 φ28
BA1730 φ17 φ30 φ17 φ30
BA2035 φ20 +0.25/
+0.004 		φ35 -0.120/
-0.510 		φ20 +0.37/
+0.04 		φ35 -0.050/
-0.440
BA2542 φ25 φ42 -0.130/
-0.520 		φ25 φ42
BA3047 φ30 φ47 φ30 φ47

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Performance info.

■Load Information of Thrust Needle Roller Bearings

(Name No.) Hole Dia. O.D. Allowable Rotation Speed
（rpm）
(Reference) 		Mass
(g)
(Reference) 		Basic Dynamic
Load Rating
Ca kN 		Basic Static
Load Rating
Coa kN
BA0414 φ4 φ14 5200 2.7 4.4 8
BA0515 φ5 φ15 5200 2.8 4.75 9.2
BA0619 φ6 φ19 4700 5 6.8 15.5
BA0821 φ8 φ21 4500 6 7.8 19.4
BA1024 φ10 φ24 4200 9 9.2 25.5
BA1226 φ12 φ26 3700 9.9 29
BA1528 φ15 φ28 3200 10 11.3 36
BA1730 φ17 φ30 3000 12 11.9 39.5
BA2035 φ20 φ35 2500 15 13.1 46.5
BA2542 φ25 φ42 2100 21 14.7 58
BA3047 φ30 φ47 1800 24 16.3 70

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Bearing Lock Nuts

ゆるみ止めベアリングナット　四角タイプ
Product name Bearing Lock Nuts - Square Type, Coarse Thread
Part number BNGS6
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes

Selection criteria

Compact nut designed exclusively for tightening the bearings

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Available sizes

■Bearing Lock Nuts - Square

Screw Pitch Type Material Hardness Surface Treatment Accessory
Coarse
・
Fine 		1018 Carbon Steel - Black Oxide Set Piece
(Copper Alloy) 		Set Screw(4137 Alloy Steel)
1045 Carbon Steel Thermal Refined 22-28HRC
304 Stainless Steel - - Set Screw(304 Stainless Steel )

■Sizes and Dimensions

Thread Dia. x Pitch Retainer
O.D. 		External
Size 		Overall thickness Set Screw
Dia.
Coarse Thread Fine Thread
M3×0.5 M3×0.35 φ4 □10 5.5 M3
M4×0.7 M4×0.5 φ5
M5×0.8 M5×0.5 φ9 □11
M6×1.0 M6×0.75 φ10 □12
M8×1.25 M8×1.0 φ13 □14 6.5
M10×1.5 M10×1.0 φ16 □17 8 M4
M12×1.75 M12×1.0 φ17 □19
- M15×1.0 φ21 □22 10
M16×2.0 -
- M17×1.0
M20×2.5 M20×1.0 φ26 □30 13
M24×3.0 - φ33 □35 15 M5
- M25×1.5
M30×3.5 M30×1.5 φ39 □40 20 M6
- M35×1.5 φ43 □45
M40×1.5 φ48 □49 25
M50×1.5 φ61 □63

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Gussets

リブ　－タップ穴　固定寸タイプ－
Product name Gussets- Tapped Holes, Standard Holes Position, Standard Perpendicularity Type
Part number RBBW30-30-6
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes

Selection criteria

Economical support.

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Available sizes

■Gussets- Tapped Holes, Standard Holes Position, Standard Perpendicularity Type

Precision Type Material Surface Treatment
Standard Grade
(perpendicularity: 0.05/100)
・
Precision Grade
(perpendicularity: 0.02/100) 		1018 Carbon Steel -
Black Oxide
Electroless Nickel Plating
5052 Aluminum Alloy -
Clear Anodize
Black Anodize
304 Stainless Steel -

Sizes and Dimensions

Precision Type Short side Long side Thickness/Tapped Hole Dia. Tapped
Hole Depth
30 40 50 60 80 100 SS400・SUS304 5052 Aluminum Alloy
t6 t9 t12 t16 t6 t10 t12 t16
Standard Grade
(perpendicularity:
0.05/100)
・
Precision Grade
(perpendicularity:
0.02/100) 		20 ○ ○ ○ ○ ○ M3 M3 Diameter×1.5
30 ○ M3 M6 M3 M6
○ ○ ○ ○ ○ M5 M6 M5 M6
40 ○ ○ ○ ○ ○ M5 M6 M5 M6
M6 M8 M6 M8
50 ○ ○ ○ ○ M5 M6 M5 M6
M6 M8 M6 M8
60 ○ ○ ○ M5 M6 M5 M6
M6 M8 M6 M8
80 ○ ○ M5 M6 M8 M5 M6 M8
M6 M8 M6 M8
100 ○ M5 M6 M8 M5 M6 M8
M6 M8 M6 M8

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IDEA NOTE Reduce length of the motor shaft.

The thrust bearing allows the shaft to handle the thrust load.

IDEA NOTE Thrust bearing

By using the thrust bearing, load to the motor is reduced.

  • TERMS AND CONDITIONS FOR USE OF CAD DATA
    Your access to the CAD data that MISUMI Corporation (hereinafter referred to as the Company) posts on this site (including 3D CAD data, intermediate 3D CAD data and 2D CAD data; hereinafter referred to as the Data) are of products manufactured and/or sold by the Company (hereinafter referred to as the Products) assumes that you have read and accepted these terms and conditions which govern your use of the Data. If you do not agree to these terms and conditions, you must stop using this website and the Data. You must not use the Data for any unlawful purpose or in any manner inconsistent with these terms and conditions.
    1. CAD Data
    The Data is prepared for assisting the Company's users in the CAD design process by providing dimensions and other Product information. In order to provide the best speed and stability working within this site, the Product drawings were simplified to reduce the size of the Data. For instance, some of the Products are shown without the oil groove shape, screws or spring shape. Also, please be aware that the tolerance, surface roughness and/or chamfer of the Data may vary from the actual Products.
    2. Disclaimer on Data
    While the Company has carefully prepared the Data, accuracy of the Data is not guaranteed and is subject to the variances as described above. The Company may also modify, add or delete the Data at any time without prior notice. The Company assumes no liability for any direct, indirect, consequential or special damages that you may claim resulted from your use of the Data or any changes to or deletions of the Data regardless of the reason. The Company provides no warranty as to the quality, accuracy, functionality, safety or reliability of the combination of Products and parts. Example applications and combinations of the Products are provided for illustrative purposes only.
    3. Copyright
    Copyrights to the content and the Data belong to the Company or the manufacturers of the Products. The said copyright is protected by the Copyright Act and international treaties. The use (including duplication, modification, uploading, posting, transmission, distribution, licensing, sales and publishing) of the Data except for the purpose to use the Data described above without prior approval of the Company is not allowed. The Data cannot be used for any purposes (including sales promotion) except for designing your machine. If you violate this provision or the laws or regulations, the Company may prohibit you from the use of the Data, the Company’s site and/or take legal action. So long as you comply with these terms and conditions, the Company grants to you a non-exclusive, non-transferable, revocable license to access and use the Data for the sole purpose of assisting you in designing machines that incorporate products.
    In case that the CAD data is found to have been to be used for any purpose other than mentioned above or against the related laws, MISUMI may take legal actions, including the one for blocking the involved user from using CAD data and from accessing to the MISUMI site.
    4. Disclaimer of Warranty
    ANY AND ALL CONTENT APPEARING ON THIS WEB SITE IS PROVIDED FOR INFORMATIONAL PURPOSES ONLY. THIS WEB SITE, ITS CONTENT AND ITS LINKS ARE PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS AND ARE USED ONLY AT YOUR SOLE RISK, TO THE FULLEST EXTENT PERMISSIBLE BY LAW. THE COMPANY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, OF ANY KIND, REGARDING THIS WEB SITE (INCLUDING ITS CONTENT, HARDWARE, SOFTWARE AND LINKS), INCLUDING AS TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, TITLE, NON INFRINGEMENT, RESULTS, ACCURACY, COMPLETENESS, ACCESSIBILITY, COMPATIBILITY, SECURITY AND FREEDOM FROM COMPUTER VIRUS. THE COMPANY WILL NOT BE LIABLE FOR ANY DAMAGES OR LOSSES, INCLUDING DIRECT, INDIRECT, CONSEQUENTIAL, SPECIAL, INCIDENTAL OR PUNITIVE DAMAGES AND/OR LOST PROFITS, IN CONNECTION WITH USE OF THE INTERNET, THIS WEB SITE, ITS CONTENT OR ITS LINKS
    Further, the Company will not be liable to you for any failure or delay by the Company to provide access to the Data or any of its obligations under these terms and conditions where such failure or delay is the direct or indirect result of any circumstances beyond the Company's reasonable control (and the Company's obligations will be suspended for the duration of such circumstances).

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    1. Assembly data shows the assembly drawings in the concept design phase. The sole purpose of the data is to explain the structure and functionality of the assembly and is not considered nor to be used as a final design.
      You will need to edit the Data so that it meets your specific design conditions.
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       It is configured so that each sub-assembly unit can be used as it is or edited.

Application Overview

Purpose

  • Purpose
    • Reducing the thrust load to the motor shaft without using coupling.
  • Operation
    • Worm gear is directly mounted on motors shaft, using wire it powers wire drum that lowers and lifts the workpiece.

Points for use

  • Applicable to thrust load from one direction only.

Target workpiece

  • Shape: Block
  • Size: W40 x D40 x H25mm
  • Weight: 0.3kg

Design Specifications

Operating Conditions or Design Requirements

  • Up and down stroke: 30mm
  • External size: W123 x D125 x H92mm

Required Performance

  • Load: 3N

Selection Criteria for Main Components

  • A motor with thrust load of 0.8N is selected to pull up a workpiece of 0.3kg.

Design Evaluation

Verification of main components

  • Select the bearing to withstand the load weight.
  • Thrust

    Thrust direction indicates the axial direction. (Antonym; radial direction perpendicular to the axis)

    bearing selection
    • Conditional values: Diameter of the wire winding part of the drum d1 = 28mm, pitch circle diameter of the worm wheel d2 = 30mm, motor rotational speed z1 = 1200rpm, workpiece mass W = 0.3kg, gravitational acceleration g = 9.8m/s2, work movement length l1 = 30mm, friction coefficient on the tooth surface μ = 0.0167, tooth rectangular pressure angle a = 20°, worm gear advance angle y1 = 3.58°, pitch circle diameter of worm gear d3 = 16mm, worm gear rotational speed q1 = 1200mm, basic load rating of thrust bearing c1 = 6.8kN
    • Number of revolution necessary for the drum to wind the workpiece n1 is given as follows:
      n1 = d1 x π/l1 = 28 x π/30 = 2.93
      Motor rotation time at that time is given by
      t1 = d2 x n1 x (60 x z1) = 30 x 2.93 x (60 x 1200) = 4.40t
    • Net power H1 applied to the worm gear is given by
      H1 = W x g x l1/t1 = 0.3 x 9.8 x 30/4.40 = 0.02N = 2.72 x 10 -5 PS
    • Apparent friction angle on the tooth surface p1 is given by
      p1 = tan-1(μ) = tan-1(0.0167) = 0.957°
    • Axial thrust load F1 of the worm gear is given by
      F1=F2/tan(y+p)=1.432×H1×10 6 /{tan(y1+p1)×d3×q1}×g
      =1.432×2.72×10 -5 ×10 6 /{tan(3.58+0.957)×16×1200}×9.8
      =0.25N＜6.8kN=c1
      ⇒No problem

Other Design Consideration

  • From smoother motion select ball bearings to support shaft drum not oil free bushing even if its a low speed application.
  • Avoid any gap/clearance between motor brackets, thrust bearing and worm gear.

Explore Similar Application Examples

Page - / -

Part List

No. Part Name Sample Picture MISUMI Part Number
(click the Part Number below for details) 		Quantity
1 Ribs BA0619 1
2 Hex Socket Set Screws SSFRHMS8-82.0-F15.0-B8-P6-T15.0-S8-Q6-SC42 1
3 Set Screws Dimple BNGS6 2
4 Rotary Shaft B636ZZ 2
5 Deep Groove Ball Bearings RBBW30-30-6 2
6 Bearing Spacer MSSU4-5 1
7 Ribs MSSU5-6 1
  • The part list above only contains MISUMI parts.
    Part list download (CSV) includes MISUMI and third party components used in this example.
  • TERMS AND CONDITIONS FOR USE OF CAD DATA
    Your access to the CAD data that MISUMI Corporation (hereinafter referred to as the Company) posts on this site (including 3D CAD data, intermediate 3D CAD data and 2D CAD data; hereinafter referred to as the Data) are of products manufactured and/or sold by the Company (hereinafter referred to as the Products) assumes that you have read and accepted these terms and conditions which govern your use of the Data. If you do not agree to these terms and conditions, you must stop using this website and the Data. You must not use the Data for any unlawful purpose or in any manner inconsistent with these terms and conditions.
    1. CAD Data
    The Data is prepared for assisting the Company's users in the CAD design process by providing dimensions and other Product information. In order to provide the best speed and stability working within this site, the Product drawings were simplified to reduce the size of the Data. For instance, some of the Products are shown without the oil groove shape, screws or spring shape. Also, please be aware that the tolerance, surface roughness and/or chamfer of the Data may vary from the actual Products.
    2. Disclaimer on Data
    While the Company has carefully prepared the Data, accuracy of the Data is not guaranteed and is subject to the variances as described above. The Company may also modify, add or delete the Data at any time without prior notice. The Company assumes no liability for any direct, indirect, consequential or special damages that you may claim resulted from your use of the Data or any changes to or deletions of the Data regardless of the reason. The Company provides no warranty as to the quality, accuracy, functionality, safety or reliability of the combination of Products and parts. Example applications and combinations of the Products are provided for illustrative purposes only.
    3. Copyright
    Copyrights to the content and the Data belong to the Company or the manufacturers of the Products. The said copyright is protected by the Copyright Act and international treaties. The use (including duplication, modification, uploading, posting, transmission, distribution, licensing, sales and publishing) of the Data except for the purpose to use the Data described above without prior approval of the Company is not allowed. The Data cannot be used for any purposes (including sales promotion) except for designing your machine. If you violate this provision or the laws or regulations, the Company may prohibit you from the use of the Data, the Company’s site and/or take legal action. So long as you comply with these terms and conditions, the Company grants to you a non-exclusive, non-transferable, revocable license to access and use the Data for the sole purpose of assisting you in designing machines that incorporate products.
    In case that the CAD data is found to have been to be used for any purpose other than mentioned above or against the related laws, MISUMI may take legal actions, including the one for blocking the involved user from using CAD data and from accessing to the MISUMI site.
    4. Disclaimer of Warranty
    ANY AND ALL CONTENT APPEARING ON THIS WEB SITE IS PROVIDED FOR INFORMATIONAL PURPOSES ONLY. THIS WEB SITE, ITS CONTENT AND ITS LINKS ARE PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS AND ARE USED ONLY AT YOUR SOLE RISK, TO THE FULLEST EXTENT PERMISSIBLE BY LAW. THE COMPANY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, OF ANY KIND, REGARDING THIS WEB SITE (INCLUDING ITS CONTENT, HARDWARE, SOFTWARE AND LINKS), INCLUDING AS TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, TITLE, NON INFRINGEMENT, RESULTS, ACCURACY, COMPLETENESS, ACCESSIBILITY, COMPATIBILITY, SECURITY AND FREEDOM FROM COMPUTER VIRUS. THE COMPANY WILL NOT BE LIABLE FOR ANY DAMAGES OR LOSSES, INCLUDING DIRECT, INDIRECT, CONSEQUENTIAL, SPECIAL, INCIDENTAL OR PUNITIVE DAMAGES AND/OR LOST PROFITS, IN CONNECTION WITH USE OF THE INTERNET, THIS WEB SITE, ITS CONTENT OR ITS LINKS
    Further, the Company will not be liable to you for any failure or delay by the Company to provide access to the Data or any of its obligations under these terms and conditions where such failure or delay is the direct or indirect result of any circumstances beyond the Company's reasonable control (and the Company's obligations will be suspended for the duration of such circumstances).

    CAD Download (Unit Assembly)

    CAD Download: File Format
    生成

    Thank you for downloading the data.

    Click the Good IDEA! button when you find interesting design tips.


    This data is utilized in order to list more useful application examples in the future.

    Good IDEA!

    CAD Data Limitations

    1. Assembly data shows the assembly drawings in the concept design phase. The sole purpose of the data is to explain the structure and functionality of the assembly and is not considered nor to be used as a final design.
      You will need to edit the Data so that it meets your specific design conditions.
    2. Unit assembly Data consists of some sub-assemblies.
      It is configured so that each sub-assembly unit can be used as it is or edited.

      3. * The part in the frame is a sub-assembly unit.

    3. The Data for fabricated parts is based on easy-to-edit dimensions and shapes in sketches and histories.
    4. The Data including the third-part components are made by the Company.

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