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inCAD Library

Please read before use

What is inCAD Library?

  • Helpful application examples for mechanical engineers.

The Concept of inCAD Library

  • Online application library with a range of ideas for all manufacturing industries.
  • Save design time and learn new design applications when you are concepting new machines.

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  • MISUMI may not offer all parts in each application design. Available parts can only be purchased separately not as a unit shown in each application design.
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inCAD Library Features

  1. Get great new design ideas for these application examples.

    2. Over 300 design application ideas
    collected from dozens of industries!

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No.000029 Air Flow Confirmation Fixture
Good IDEA!
47

Uniform load retention with two springs

Relevant category

Hand Valve

Hand Valve
Product name One-Touch Coupling Shut-Off Valves
Part number BVHVU4-3
Features Residual Pressure Relief Valves
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes

Selection criteria

For an operator to control the inspection timing.

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Available sizes

■One-Touch Coupling Shut-Off Valves

(Tube DIA.) Number of circuits Handle color Effective cross section area
(mm2)
φ4 2way valve・3way valve Blue・Red 3.4
φ6 7.2
φ8 8.7
φ10 17.4
φ12 18.1

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O Ring

O Ring
Product name O-Rings - P Series
Part number NPA5
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes | Accuracy Info

Selection criteria

Economical and proven airtight component.

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Available sizes

■O-Rings - P Series

Material Hardness
(JIS Hs) 		Color Usable temperature
range 		JIS Symbol Purpose
Nitrile rubber 70±5 Black －30-100℃ Class1A Mineral oil resistant
90±5 Black －25-100℃ Class1B
Silicon rubber 50±5 Milky white －50-200℃ − Heat resistant
70±5 Dark blue －50-200℃ Class4C
Fluorine rubber 70±5 Black －15-200℃ Class4D
90±5 Black －15-200℃ −
Ethylene-
propylene rubber 		70±5 Black －45-130℃ − Weather resistant

Sizes and Dimensions(Excerpt)

JIS
nominal number 		Ring
I.D. 		Ring
Wire DIA. 		Mating side DIA.
Against O ring
Internal contact External contact
P3 φ2.8 φ1.9 φ3 φ6
P4 φ3.8 φ4 φ7
P5 φ4.8 φ5 φ8
P6 φ5.8 φ6 φ9
P7 φ6.8 φ7 φ10
P8 φ7.8 φ8 φ11
P9 φ8.8 φ9 φ12
P10 φ9.8 φ10 φ13
P10A φ9.8 φ2.4 φ10 φ14
P11 φ10.8 φ11 φ15
P11.2 φ11 φ11.2 φ15.2
P12 φ11.8 φ12 φ16
P12.5 φ12.3 φ12.5 φ16.5
P14 φ13.8 φ14 φ18
P15 φ14.8 φ15 φ19
P16 φ15.8 φ16 φ20
P18 φ17.8 φ18 φ22
P20 φ19.8 φ20 φ24
P21 φ20.8 φ21 φ25
P22 φ21.8 φ22 φ26

＊Please see the product pages for other diameter rings.

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Accuracy Info

■Accuracy of O ring P series

Ring wire DIA. tolerance:

Wire DIA. tolerance
φ1.9 ±0.08
φ2.4 ±0.09
φ3.5 ±0.10
φ5.7 ±0.13

Parting surface burr height: 0.1 or less

Parting surface burr width: 0.15 or less

Ring I.D. tolerance:

JIS
nominal number 		Ring
I.D. 		Tolerance
Nitrile Silicon Fluorine
Ethylene
P3 φ2.8 ±0.14 ±0.21 ±0.16
P4 φ3.8
P5 φ4.8 ±0.15 ±0.22 ±0.18
P6 φ5.8
P7 φ6.8 ±0.16 ±0.24 ±0.19
P8 φ7.8
P9 φ8.8 ±0.17 ±0.25 ±0.20
P10 φ9.8
P10A φ9.8
P11 φ10.8 ±0.18 ±0.27 ±0.21
P11.2 φ11
P12 φ11.8 ±0.19 ±0.28 ±0.22
P12.5 φ12.3
P14 φ13.8
P15 φ14.8 ±0.20 ±0.30 ±0.24
P16 φ15.8
P18 φ17.8 ±0.21 ±0.31 ±0.25
P20 φ19.8 ±0.22 ±0.33 ±0.26
P21 φ20.8 ±0.23 ±0.34 ±0.27
P22 φ21.8 ±0.24 ±0.36 ±0.28
P22A φ21.7
P22.4 φ22.1
P24 φ23.7
P25 φ24.7 ±0.25 ±0.37 ±0.30
P25.5 φ25.2
P26 φ25.7 ±0.26 ±0.39 ±0.31
P28 φ27.7 ±0.28 ±0.42 ±0.33
P29 φ28.7 ±0.29 ±0.43 ±0.34
P29.5 φ29.2
P30 φ29.7

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IDEA NOTE Push force is uniform

Two springs are placed in parallel for the workpiece pusher, making the push force uniform over a large surface.

IDEA NOTE High accuracy clamping with linear guides

A linear guide is placed under the workpiece pusher with a toggle clamp on the tip, stabilizing the pusher operation when pushed by the toggle clamp.

  • Terms of use of 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://th.misumi-ec.com/ (hereinafter referred to as the "Website") operated by MISUMI (THAILAND) CO., LTD. (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.
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    Customers or users of the Data, are prohibited from the following acts regarding the Data, in whole or in part:
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    (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;
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    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.
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    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.
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    MISUMI may, at any time, and in its sole discretion, modify these terms and conditions; any such modification will be effective immediately.
    9. Severability
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    These Terms and any disputes arising in connection therewith shall be exclusively governed by and construed in accordance with the laws of Thailand, without regard to its conflicts of law principles. The authorized courts in Thailand shall have exclusive jurisdiction to adjudicate any dispute arising in connection with these Terms.

    Revised: 16th November, 2025

    CAD Download (Unit Assembly)

    CAD Download: File Format
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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.

    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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  • * 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

  • A fixture that applies a uniform force to hold down a resin tube.
  • This setup is designed for measurement of fluid flow rate through resin tube.

Points for use

  • This setup is vertically mounted and the resin tube is manually secured by toggle clamps.
  • An o-ring is used to prevent fluid leakage .

    Air flow is inhibited by being sealed, and is not affected by changes in atmospheric pressure.

Target workpiece

  • Resin tubing
    External dims.: W70 x D44 x H18
    Weight: 25g

Design Specifications

Operating Conditions or Design Requirements

  • Toggle clamp stroke: 17mm
  • Spring deflection: 7mm
  • External dims.: W220 x D210 x H127 (max.)

Required Performance

  • Workpiece retaining load: 23.5N

Selection Criteria for Main Components

  • Toggle clamp
    • Side push type since horizontal motion is required.
  • Linear guide
    • While the moment load is minimal, select the appropriate miniature linear guide that matches the fixture size.

Design Evaluation

Verification of main components

  • Select a spring capable of retaining the workpiece.
  • Spring load
    • Calculation formula: F = kx
    • Assumed load: F = 23.5N (for 2 springs)
    • Assumed deflection when pressure applied: x = 12mm (When set 5mm (Set length: 20mm, Free length: 25mm), When stroked 7mm)
    • Spring constant: k = 23.5 / 2 / 12 = 0.98N/mm selected

Other Design Consideration

  • Based on the calculated forces required, select a spring stiffness that can reliably clamp the workpiece.

Explore Similar Application Examples

Page - / -

Part List

No. Part Name Sample Picture MISUMI Part Number
(click the Part Number below for details) 		Quantity
1 Compression Springs WL12-25 2
2 Toggle Clamps MC03-S1 1
3 Toggle Clamps MC01-3 1
4 Floating Joints FJTM4-0.7-4 1
5 Clamping Bolts TGSPM6 1
6 Linear Guides SSEBSLZ10-60 1
7 Hand Valves BVHVU4-3 1
8 Joint MJELLS4-M5-B 1
9 Tubes PUT4-10-CB 1
10 O Ring NPA5 1
11 Oil Free Bushings JZF8-8 2
12 Linear Shaft SSFUW8-29-M4-N4 2
13 Collars KNCLSS4-12-35 4
14 Metal Washers TWSSS12-4-1 2
15 Dowel Pins MSC3-10 2
16 Socket Head Cap Screws-with Washer SCBS3-8 2
17 Socket Head Cap Screws-with Washer SCBS4-8 2
18 Socket Head Cap Screws-with Washer SCBS4-10 5
19 Socket Head Cap Screws-with Washer SCBS4-15 4
20 Socket Head Cap Screws-with Washer SCBS4-20 4
  • 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 of 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://th.misumi-ec.com/ (hereinafter referred to as the "Website") operated by MISUMI (THAILAND) CO., LTD. (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 Thailand, without regard to its conflicts of law principles. The authorized courts in Thailand shall have exclusive jurisdiction to adjudicate any dispute arising in connection with these Terms.

    Revised: 16th November, 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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