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No.000013 Long workpiece holding fixture
Good IDEA!
6

Magnetic and physical workpiece clamp.

Related Category

Magnet

Magnet
Product name Magnets/Cylindrical
Part number HXNN8-8
Features Neodymium Magnet and Samarium-Cobalt Magnet characterized by their strong magnetic force.
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes | Performance info.

Selection criteria

Suitable for temporary retention of workpiece.

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Available sizes

■Magnets - Cylindrical

Material Surface treatment Heat resistant temperature
High Force Neodymium Magnet nickel plating 60°C
Neodymium Magnet 80°C
Heat resistant Neodymium Magnet 150°C
Cobalt magnet 200°C

■Sizes

DIA. Length High Force Neodymium Neodymium Heat resistant Neodymium Cobalt
Ø1 2 ○ ○ ○ ○
3 - ○ ○ ○
5 ○ ○ ○ ○
Ø2 2 ○ ○ ○ ○
3 ○ ○ ○ ○
4 ○ ○ - -
5 ○ ○ ○ ○
Ø3 1 ○ ○ - -
2 ○ ○ ○ ○
3 ○ ○ ○ ○
4 ○ ○ ○ ○
5 ○ ○ ○ ○
6 ○ ○ ○ -
Ø4 1 - ○ - -
2 ○ ○ ○ ○
3 ○ ○ ○ ○
4 ○ ○ ○ ○
5 ○ ○ ○ ○
8 ○ ○ ○ -
10 ○ ○ ○ -
Ø5 1 - ○ - -
2 ○ ○ ○ ○
3 ○ ○ ○ ○
4 ○ ○ ○ ○
5 ○ ○ ○ ○
6 ○ ○ ○ ○
8 ○ ○ - -
10 ○ ○ ○ -
Ø6 2 ○ ○ ○ ○
3 ○ ○ ○ ○
4 ○ ○ ○ ○
5 - ○ ○ ○
6 ○ ○ ○ ○
8 ○ ○ ○ -
10 ○ ○ - -
Ø8 2 - ○ ○ ○
3 ○ ○ ○ ○
5 ○ ○ ○ ○
6 ○ ○ - -
8 ○ ○ ○ ○
10 ○ ○ - -
Ø10 2 - ○ ○ ○
3 ○ ○ ○ ○
5 ○ ○ ○ ○
8 - ○ ○ ○
10 ○ ○ ○ ○
Ø12 2 - ○ ○ ○
3 - ○ ○ ○
5 - ○ ○ ○
8 - ○ ○ ○
10 - ○ ○ ○
Ø15 2 - ○ ○ ○
3 - ○ ○ ○
5 - ○ ○ ○
8 - ○ ○ ○
10 - ○ ○ ○
Ø20 3 - ○ - -
10 - ○ - -

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Performance info.

■Attraction force and surface magnetic flux density of Cylindrical magnet

DIA. Length Attraction force (N) Surface magnetic flux density (Gauss G)
High Force Neodymium Neodymium Cobalt High Force Neodymium Neodymium Cobalt
Heat resistant Neodymium Heat resistant Neodymium
Ø1 2 0.08 0.06 0.04 1900 ~ 2100 1100 ~ 1300 900 ~ 1100
3 - 0.07 0.05 - 1200 ~ 1400 1000 ~ 1200
5 0.1 0.08 0.06 2100 ~ 2300 1300 ~ 1500 1100 ~ 1300
Ø2 2 0.77 0.59 0.39 3500 ~ 3700 2400 ~ 2600 2000 ~ 2200
3 0.9 0.69 0.49 3700 ~ 3900 3100 ~ 3300 2600 ~ 2800
4 0.93 0.72 - 3700 ~ 3900 3400 ~ 3600 -
5 1.01 0.78 0.49 4100 ~ 4300 3100 ~ 3300 2600 ~ 2800
Ø3 1 1.39 1.07 - 2700 ~ 2900 2000 ~ 2400 -
2 2.04 1.57 1.08 3700 ~ 4000 3100 ~ 3300 2600 ~ 2800
3 2.55 1.96 1.37 4200 ~ 4500 3300 ~ 3500 2800 ~ 3000
4 2.93 2.25 1.47 4400 ~ 4700 3400 ~ 3600 2900 ~ 3100
5 3.06 2.35 1.57 4500 ~ 4800 3500 ~ 3700 2900 ~ 3100
6 3.6 2.82 - 4600 ~ 4800 4100 ~ 4300 -
Ø4 1 - 1.47 - - 2000 ~ 2200 -
2 3.69 2.84 1.86 4100 ~ 4300 3100 ~ 3300 2600 ~ 2800
3 4.97 3.82 2.55 4200 ~ 4500 3600 ~ 3800 3100 ~ 3300
4 5.6 4.31 2.94 4500 ~ 4800 3800 ~ 4000 3200 ~ 3400
5 6.11 4.7 3.14 4800 ~ 5100 4000 ~ 4200 3400 ~ 3600
8 8.5 6.82 - 5100 ~ 5400 4500 ~ 4700 -
10 9.04 6.96 - 5200 ~ 5500 4500 ~ 4700 -
Ø5 1 - 1.45 - - 1800 ~ 2000 -
2 5.1 3.92 2.65 3500 ~ 3700 3000 ~ 3200 2500 ~ 2700
3 7.51 5.78 3.82 4200 ~ 4500 3800 ~ 4000 3200 ~ 3400
4 8.92 6.86 4.61 4600 ~ 4900 4000 ~ 4200 3400 ~ 3600
5 9.93 7.64 5.1 4900 ~ 5100 4300 ~ 4500 3600 ~ 3800
6 10.57 8.13 5.39 5100 ~ 5400 4300 ~ 4500 3600 ~ 3800
8 11.64 8.96 - 5200 ~ 5500 4700 ~ 4900 -
10 12.74 9.8 - 5400 ~ 5700 4800 ~ 5000 -
Ø6 2 6.5 5 3.33 3100 ~ 3400 2900 ~ 3100 2400 ~ 2600
3 9.93 7.64 5.1 4000 ~ 4300 3700 ~ 3900 3100 ~ 3300
4 12.48 9.6 6.47 4600 ~ 4900 3900 ~ 4100 3300 ~ 3500
5 - 10.88 7.25 - 4300 ~ 4500 3600 ~ 3800
6 15.29 11.76 7.84 5100 ~ 5400 4400 ~ 4600 3700 ~ 3900
8 15.34 11.8 - 5400 ~ 5600 4700 ~ 4900 -
10 15.39 11.84 - 5500 ~ 5800 4800 ~ 5000 -
Ø8 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 -
Ø10 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
Ø12 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
Ø15 2 - 10.58 7.06 - 1400 ~ 1600 1100 ~ 1300
3 - 19.6 13.13 - 2300 ~ 2500 1900 ~ 2100
5 - 39.59 26.46 - 3100 ~ 3300 2600 ~ 2800
8 - 64.39 43.02 - 4200 ~ 4400 3500 ~ 3700
10 - 75.85 50.67 - 4600 ~ 4800 3800 ~ 4000
Ø20 3 - 34.32 - - 1700 ~ 1900 -
10 - 98.06 - - 4200 ~ 4400 -

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IDEA NOTE Workpiece is attracted by a magnet

Magnet position can be adjusted to change the holding force of the workpiece.

IDEA NOTE Clips with torsional springs are used to fix the workpiece.

To compensate for different length objects, the number of clips used can be adjusted.

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    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.

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    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.
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    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.
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    Revised: September 21, 2025

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      You will need to edit the Data so that it meets your specific design conditions.
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  • * Unit assembly CAD data consists of some sub-assemblies.
       Each sub-assembly unit can be used as it is or can be edited.

Application Overview

Purpose

  • Clamping mechanism which utilizes magnets as well as clips.
  • Each clamp is separated allowing multiple points of contact.

Points for use

  • The magnet locates the workpiece, and the clips hold it in place.

Target workpiece

  • Long magnetic objects.
    Dims: W50 x D150 x H30, t3

Design Specifications

Operating Conditions or Design Requirements

  • External dims.: W300 x D60 x H86

Required Performance

  • Spring load: 10.23N (Unclamped)
    8.26N (Workpiece clamped)

Selection Criteria for Main Components

  • Clamps
    • Spring with low constant is selected in order to reduce the operation efforts.
  • Magnet
    • Select a magnet with attraction force appropriate for the application.
    • For this example, springs with constant: 2.44N･mm/deg.are selected.

Design Evaluation

Verification of main components

  • Select a spring appropriate for the application.
  •  Spring load
    • Calculation formula: Reaction force F = k x θ / l
      Spring constant (k) : 2.44N･mm/deg
      Max. operational angle (θ) : 78°
      Load point distance from the coil center (I) : 18.6mm
  • Clamp released
    • Spring. operational angle (θ) : 78°
      F = 2.44 x 78 / 18.6 = 10.23N
  • Workpiece clamp
    • Spring. operational angle (θ) : 63°
      F = 2.44 x 63 / 18.6 = 8.26N

Other Design Consideration

  • Magnetic attraction force can be adjusted by magnet size and position.
  • Select a torsional spring that makes the clip easily operational.
  • Provide a magnet block and fixing pins on the right hand side to accommodate different workpieces.

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 Precision Pivot Pins SCDG4-22 3
2 Magnet HXNN8-8 1
3 Long Knurled Head Screws LRLBS3-A20-L24 1
4 PTFE Sheets PTFETT0.23-20 1
5 Dowel Pins MSH3-8 4
6 Set Screws Soft Type SBPPS4-6 1
  • 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.
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    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;
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    (10)Performing acts that interfere with the proper functioning of this Website, such as acquiring Data in bulk.
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    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

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


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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.

      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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