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No.000078 Soldering fixture
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19

Workpiece holding using magnets.

Related Category

Magnet

Magnet
Product name Magnets/Cylindrical
Part number HXN10-2
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes | Performance info.

Selection criteria

Handy and economical as an item to hold a workpiece

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Available sizes

■Magnets (Round)

Material Surface Treatment Heat Resistant Temperature
High Force Neodymium Magnet Nickel Plating 60°C
Neodymium Magnet 80°C
Heat-resistant Neodymium Magnets 150°C
Cobalt Magnet 200°C

■Sizes and Dimensions

O.D. (mm) Length (mm)
8 2
3
5
6
8
10
10 2
3
5
8
10
12 2
3
5
8
10

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Performance info.

■Speeds / Loads (Load Info.) of Magnets

I.D. (mm) Length (mm) Attraction Force
(N) 		Surface Magnetic Flux Density
Gauss (G)
High Force Neodymium Neodymium
Heat-resistant Neodymium 		Cobalt High Force Neodymium Neodymium
Heat-resistant Neodymium 		Cobalt
8 2 - 6.66 4.41 - 2400 - 2600 2000 - 2200
3 14.01 10.78 7.45 3500 - 3800 3200 - 3400 2700 - 2900
5 23.31 17.93 11.96 4700 - 5000 4200 - 4400 3500 - 3700
6 26.76 20.59 - 5100 - 5400 4700 - 4900 -
8 29.94 23.03 15.39 5400 - 5700 4600 - 4800 3900 - 4100
10 31.23 24.02 - 5600 - 5900 5000 - 5200 -
10 2 - 7.84 5.29 - 2000 - 2200 1700 - 1900
3 18.34 14.11 9.41 3100 - 3400 2800 - 3000 2400 - 2600
5 32.23 24.79 16.56 4300 - 4600 3800 - 4000 3200 - 3400
8 - 34.3 23.03 - 4700 - 4900 4000 - 4200
10 49.43 38.02 25.48 5500 - 5800 4900 - 5100 4100 - 4300
12 2 - 9.02 5.98 - 1600 - 1800 1300 - 1500
3 - 16.46 11.07 - 2500 - 2700 2100 - 2300
5 - 31.16 20.87 - 3600 - 3800 3000 - 3200
8 - 46.55 31.07 - 4500 - 4700 3800 - 4000
10 - 52.72 35.28 - 4800 - 5000 4000 - 4200

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Small Hex Posts

Small Hex Posts
Product name Small Hex Posts- One End Threaded
Part number SLCB5.5-20
Features Suitable for Limited Spaces or Space-Saving required Places.
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes

Selection criteria

Handy as the feet of the reversed fixture or as the handle to open a lid.

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Available sizes

■Small Hex Posts (Both Ends Tapped)

Material Surface Treatment
EN 1.0038 Equiv. or
EN 1.0762 Equiv. 		Black Oxide
Electroless Nickel Plating
EN 1.4305 Equiv. -

■Sizes and Dimensions

Type Opposite Side Size
(mm) 		Length (1mm Increments)
EN 1.0038 Equiv. or EN 1.0762 Equiv. Black Oxide 5.5 5 - 12
13 - 20
EN 1.0038 Equiv. or EN 1.0762 Equiv. Electroless Nickel Plating 5.5 5 - 12
13 - 20
EN 1.4305 Equiv. 4 5 - 10
15, 20
5 5 - 10
15, 20
5.5 5 - 12
13 - 20

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IDEA NOTE Best locating method for the cover with circular arc motion.

Cover is located with magnetic attraction and slotted holes/pins.

IDEA NOTE Posts are provided as feet for improved workability.

Hex posts are mounted on the cover to be the feet when the cover is reversed.

  • 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 provided by MISUMI Corporation (hereinafter referred to as "MISUMI") via www.misumi-europe.com operated by MISUMI Europa GmbH(hereinafter referred to as the "Website"). 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 quality, accuracy, functionality, safety, reliability, etc., 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 the 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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    10．Miscellaneous
    In the event that Customers violate the Terms, MISUMI and/or MISUMI Europa GmbH shall be entitled to claim the damages and expenses (including attorney's fees) incurred by such violation against the Customers.
    These Terms and any disputes arising in connection therewith shall be exclusively governed by and construed in accordance with the laws of the Federal Republic of Germany, without regard to its conflicts of law principles. The courts located in Frankfurt am Main/Germany 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 courts located in Frankfurt am Main/Germany.

    Revised: September 21, 2025

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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.
    2. The CAD data unit assembly consists of sub-assemblies.
      Each sub-assembly unit can be used as it is or can be edited.

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       Each sub-assembly unit can be used as it is or can be edited.

Application Overview

Purpose

  • A fixture for soldering PC board.

Points for use

  • Operating procedure
    • The PC board is held down by the fixtures cover.
    • User can perform soldering work on the first side of the PC board.
    • After soldering the first side, lift up the cover, then remove and refit the PC board to its opposite side.
    • Fold down the fixture cover again and begin soldering work on the 2nd side of the PC board.

Target workpiece

  • PC board
  • Dims.: W70 x D45 x t1 (Also compatible with PCB W40 x D80 x t1)

Design Specifications

Operating Conditions or Design Requirements

  • External dims.: W120 x D120 x H30
  • Magnet; 7.84N

Required accuracy ･ Load

  • Cover retaining force: 5.9N

Selection Criteria for Main Components

  • Magnet
    • Magnetic hold down force should be sufficient to keep the PCB in place during soldering, and yet minimal enough for easy lifting of the cover when soldering is complete.
    • As an example, select magnets with attraction force of approximately 5.9N.

Design Evaluation

Verification of main components

  • Consider adding handle or hex posts for lifting of cover and overall handling of the fixture.
    • When reversing, load applicable on the magnets: Cover + Hex posts + PCB = 45g + 10g + 5g = 60g = 0.59N
    • Distance between the magnets and magnetic material: 2mm (Magnetic material: EN 1.7220 Equiv., screw head)
    • Assumed decay: 0.1
    • Attraction to prevent cover opening: 0.59 / 0.1 = 5.9N
    • Magnetic attraction can vary based on distance, temperature, material and size of magnetic body. Selection is to be made upon actual measurements.

Other Design Consideration

  • Since soldering is applied on reversed sides, hex posts are provided as feet on the cover side. The posts are also used as handles for cover open/close.
  • Locating pins are used to locate the cover.
  • Add notches as needed to avoid wire harness, etc.
  • The hex socket screw heads are used as attracted member since the main body and the cover are made of non-magnetically permeable material.

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 Aluminum Hinges -Short Type- HHPSNC6 2
2 Magnets HXN10-2 2
3 Hex Posts SLCB5.5-20 4
4 Locating Pins SLPSQTAH6-L10 2
5 Socket Head Cap Screws CBM3-6 4
6 Flat Head Cap Screws SFB5-8 8
7 thread Inserts HLTS3-4.5 4
  • The part list above contains only MISUMI parts.
    The list of parts and machined products of other manufacturers than MISUMI can also be downloaded by part list download (CSV).
  • 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 provided by MISUMI Corporation (hereinafter referred to as "MISUMI") via www.misumi-europe.com operated by MISUMI Europa GmbH(hereinafter referred to as the "Website"). 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 quality, accuracy, functionality, safety, reliability, etc., 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 the 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 consent of MISUMI or its affiliates;
    (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 consent of MISUMI or its affiliates;
    (7)Altering the content, reverse engineering, decompiling, disassembling, or analyzing the Data;
    (8)Publicly disclosing or exhibiting the Data without consent of MISUMI or its affiliates;
    (9)Using the Data for the purpose of providing products and services identical or similar to those of MISUMI or its affiliates;
    (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 or the Terms, 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. Section 139 BGB (German Civil Code) shall not apply.
    10．Miscellaneous
    In the event that Customers violate the Terms, MISUMI and/or MISUMI Europa GmbH shall be entitled to claim the damages and expenses (including attorney's fees) incurred by such violation against the Customers.
    These Terms and any disputes arising in connection therewith shall be exclusively governed by and construed in accordance with the laws of the Federal Republic of Germany, without regard to its conflicts of law principles. The courts located in Frankfurt am Main/Germany 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 courts located in Frankfurt am Main/Germany.

    Revised: September 21, 2025

    CAD Data Download (Unit Assembly)

    CAD Data Download: File Format
    生成

    Thank you for downloading the data.

    Click the Good IDEA! button when this application example is helpful.


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

    Good IDEA!

    Cautions on the CAD data

    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. The CAD data unit assembly consists of sub-assemblies.
      Each sub-assembly unit can be used as it is or can be 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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