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inCAD Library

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No.000181 Reduces the Thrust Load of a Small-size Motor Shaft
Good IDEA!
1

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 of Use for CAD Data and Simplified Drawing Data
    These terms and conditions (hereinafter referred to as “the Terms") set forth the conditions for downloading CAD data and simplified drawing data posted on https://mx.misumi-ec.com/ (hereinafter referred to as the "Website") operated by MISUMI MÉXICO, S. DE R.L. DE C.V. (hereinafter referred to as "MISUMI"). By downloading CAD data and simplified drawing data posted on the Website (hereafter referred to as “Data”), customers are deemed to have agreed to these Terms.

    1. Purpose of Use
    MISUMI offers the following:
    1) CAD data found on the Website (3D CAD data, 3D Intermediate data and 2D CAD data) for the purpose of informing customers of the characteristics of the products offered by MISUMI or a manufacturer affiliated with MISUMI for use in their designs.
    2) Simplified drawing data (in PDF format) for the purpose of checking the specifications of products.
    2. Characteristics of Data
    There may be a discrepancy in certain characteristics of products (for example: tolerance, surface roughness, chamfer, etc.) between the Data and the actual product. Furthermore, for the purpose of reducing the file size of the Data, some information such as oil groove shapes, threads, or spring shapes, may be removed from the Data.
    3. Disclaimer
    MISUMI carefully creates the Data but makes no warranty as to the accuracy of the Data. MISUMI may at any time, and with no prior notice to customers, revise or delete Data. MISUMI assumes no responsibility for any damage or loss resulting from any revision or deletion of the Data, or any errors in said data. Customers are solely responsible for all aspects of their own designs, including those made using MISUMI’s CAD data. MISUMI may provide customers with design example data on the Website, but the quality, accuracy, functionality, safety, reliability, etc., of such data are not guaranteed. MISUMI may, at any time, and in its sole discretion, request that the customer cease its use of or destroy the Data in its possession. MISUMI may request the customer provide MISUMI documentation of such destruction.
    4. Prohibited Acts
    Customers or users of the Data, are prohibited from the following acts regarding the Data, in whole or in part:
    (1) Requesting quotations or placing orders for products with third parties other than those authorized by MISUMI or its affiliates;
    (2) Receiving quotations or orders for products from third parties by providing the Data to a third party or using the Data in their own business;
    (3) Displaying links to the Website related to the Data on their own websites, etc., without MISUMI's consent;
    (4) Using or reproducing the Data beyond the scope of the above-stated Purpose of Use;
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    (6) Selling, transferring, lending, sublicensing, or providing the Data to third parties in any way without MISUMI’s consent;
    (7) Altering the content, reverse engineering, decompiling, disassembling, or analyzing the Data;
    (8) Publicly disclosing or exhibiting the Data without MISUMI's consent;
    (9)　Using the Data for the purpose of providing products and services identical or similar to those of MISUMI;
    (10)　Performing acts that interfere with the proper functioning of this Website, such as acquiring Data in bulk.
    5. Copyright
    All title and copyright in and to any information contained in the Data are owned by MISUMI or the relevant manufacturer affiliated with MISUMI and are protected by applicable copyright laws and international treaties. By downloading Data, the customer acquires no ownership rights of any kind in the intellectual property contained within. Without prior approval from MISUMI, no part of the Data may be utilized (reproduced, modified, reverse-engineered, uploaded, presented, sent, distributed, licensed, sold, or published) for any purpose other than that mentioned above.
    In the event Data is found to have been to be used for any purpose other than that mentioned above or against any applicable laws, MISUMI may pursue any legal remedy available to it, which may result in forbidding the offending user from using the Data or accessing the Website.
    6. Third-Party Data
    MISUMI offers some Data provided by third parties. Such Data may be subject to separate terms and conditions, in addition to these terms. MISUMI makes no guarantee or warranty regarding Data from third parties.
    7.Export Control
    Customers shall comply with all applicable laws and regulations regarding the export of the Data.
    8. Amendments to the Terms
    MISUMI may, at any time, and in its sole discretion, modify these terms and conditions; any such modification will be effective immediately.
    9. Severability
    If any term or provision of these Terms is invalid, illegal, or unenforceable in any jurisdiction, such invalidity, illegality, or unenforceability shall not affect any other term or provision of these Terms or invalidate or render unenforceable such term or provision in any other jurisdiction.
    10. Miscellaneous
    These Terms and any disputes arising in connection therewith shall be exclusively governed by and construed in accordance with the laws of the United Mexican States, without regard to its conflicts of law principles. The state and federal courts located in Queretaro, Mexico shall have exclusive jurisdiction to adjudicate any dispute arising in connection with these Terms. By downloading the Data, you agree to submit to the exclusive and personal jurisdiction of the state and federal courts located in Queretaro, Mexico.

    Revised: 27/10/2025

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    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.

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    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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  • * 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.

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
For Price and Days to ship click on Part No. 		Quantity
1 Needle Bearing BA0619 1
2 Rotary Shaft SSFRHMS8-82.0-F15.0-B8-P6-T15.0-S8-Q6-SC42 1
3 Bearing Lock Nuts BNGS6 2
4 Ball Bearing B636ZZ 2
5 Ribs RBBW30-30-6 2
6 Hex Socket Set Screws MSSU4-5 1
7 Set Screws Dimple 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 of Use for CAD Data and Simplified Drawing Data
    These terms and conditions (hereinafter referred to as “the Terms") set forth the conditions for downloading CAD data and simplified drawing data posted on https://mx.misumi-ec.com/ (hereinafter referred to as the "Website") operated by MISUMI MÉXICO, S. DE R.L. DE C.V. (hereinafter referred to as "MISUMI"). By downloading CAD data and simplified drawing data posted on the Website (hereafter referred to as “Data”), customers are deemed to have agreed to these Terms.

    1. Purpose of Use
    MISUMI offers the following:
    1) CAD data found on the Website (3D CAD data, 3D Intermediate data and 2D CAD data) for the purpose of informing customers of the characteristics of the products offered by MISUMI or a manufacturer affiliated with MISUMI for use in their designs.
    2) Simplified drawing data (in PDF format) for the purpose of checking the specifications of products.
    2. Characteristics of Data
    There may be a discrepancy in certain characteristics of products (for example: tolerance, surface roughness, chamfer, etc.) between the Data and the actual product. Furthermore, for the purpose of reducing the file size of the Data, some information such as oil groove shapes, threads, or spring shapes, may be removed from the Data.
    3. Disclaimer
    MISUMI carefully creates the Data but makes no warranty as to the accuracy of the Data. MISUMI may at any time, and with no prior notice to customers, revise or delete Data. MISUMI assumes no responsibility for any damage or loss resulting from any revision or deletion of the Data, or any errors in said data. Customers are solely responsible for all aspects of their own designs, including those made using MISUMI’s CAD data. MISUMI may provide customers with design example data on the Website, but the quality, accuracy, functionality, safety, reliability, etc., of such data are not guaranteed. MISUMI may, at any time, and in its sole discretion, request that the customer cease its use of or destroy the Data in its possession. MISUMI may request the customer provide MISUMI documentation of such destruction.
    4. Prohibited Acts
    Customers or users of the Data, are prohibited from the following acts regarding the Data, in whole or in part:
    (1) Requesting quotations or placing orders for products with third parties other than those authorized by MISUMI or its affiliates;
    (2) Receiving quotations or orders for products from third parties by providing the Data to a third party or using the Data in their own business;
    (3) Displaying links to the Website related to the Data on their own websites, etc., without MISUMI's consent;
    (4) Using or reproducing the Data beyond the scope of the above-stated Purpose of Use;
    (5) Modifying, altering, tampering with, translating, or adapting the Data;
    (6) Selling, transferring, lending, sublicensing, or providing the Data to third parties in any way without MISUMI’s consent;
    (7) Altering the content, reverse engineering, decompiling, disassembling, or analyzing the Data;
    (8) Publicly disclosing or exhibiting the Data without MISUMI's consent;
    (9)　Using the Data for the purpose of providing products and services identical or similar to those of MISUMI;
    (10)　Performing acts that interfere with the proper functioning of this Website, such as acquiring Data in bulk.
    5. Copyright
    All title and copyright in and to any information contained in the Data are owned by MISUMI or the relevant manufacturer affiliated with MISUMI and are protected by applicable copyright laws and international treaties. By downloading Data, the customer acquires no ownership rights of any kind in the intellectual property contained within. Without prior approval from MISUMI, no part of the Data may be utilized (reproduced, modified, reverse-engineered, uploaded, presented, sent, distributed, licensed, sold, or published) for any purpose other than that mentioned above.
    In the event Data is found to have been to be used for any purpose other than that mentioned above or against any applicable laws, MISUMI may pursue any legal remedy available to it, which may result in forbidding the offending user from using the Data or accessing the Website.
    6. Third-Party Data
    MISUMI offers some Data provided by third parties. Such Data may be subject to separate terms and conditions, in addition to these terms. MISUMI makes no guarantee or warranty regarding Data from third parties.
    7.Export Control
    Customers shall comply with all applicable laws and regulations regarding the export of the Data.
    8. Amendments to the Terms
    MISUMI may, at any time, and in its sole discretion, modify these terms and conditions; any such modification will be effective immediately.
    9. Severability
    If any term or provision of these Terms is invalid, illegal, or unenforceable in any jurisdiction, such invalidity, illegality, or unenforceability shall not affect any other term or provision of these Terms or invalidate or render unenforceable such term or provision in any other jurisdiction.
    10. Miscellaneous
    These Terms and any disputes arising in connection therewith shall be exclusively governed by and construed in accordance with the laws of the United Mexican States, without regard to its conflicts of law principles. The state and federal courts located in Queretaro, Mexico shall have exclusive jurisdiction to adjudicate any dispute arising in connection with these Terms. By downloading the Data, you agree to submit to the exclusive and personal jurisdiction of the state and federal courts located in Queretaro, Mexico.

    Revised: 27/10/2025

    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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