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No.000179 Centering mechanism utilizing floating joint
Good IDEA!
13

Correction of angular misalignment generated by the suction cup

Related Category

Floating Joint

Floating Joint
Product name Floating Joints -Extra Short Threaded Stud Mount/Threaded
Part number FJCMXS6-1.0
Features Floating joint is used to compensate any misalignment between cylinder and moving object.
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes

Selection criteria

Suitable for angular misalignments

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Available sizes

■Floating Joint - Extra Short

Body/Cover Joints Spring Washer
Material Surface Treatment Material Surface Treatment Hardness Material Material Surface Treatment Hardness
EN 1.1191 Equiv. Black Oxide EN 1.1191 Equiv. Black Oxide 35 - 45
HRC 		EN 1.4301 Equiv. EN 1.4301 Equiv. Nitriding Treatment 600HV -
EN 1.4301 Equiv. - EN 1.4125 Equiv. -

■Sizes

Cylinder Mounting Side Output Allowable Lateral
Misalignment 		Allowable Angular
Misalignment 		Body
Thickness 		Body
Hex Size 		Overall Length
Thread Dia. - Pitch Thread Length Thread Dia. - Pitch Thread Length
M5 - 0.8 6 M8 - 1.25 8.5 0.5 4° 14 24 33
M6 - 1.0
M8 - 1.25 8.5 M10 - 1.5 10 15.5 27 39.5
M10 - 1.5 10 M14 - 2.0 11 19.5 30 47

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Spring Plungers

Spring Plungers
Product name Spring Plungers/Stainless Steel
Part number PJHK5-5
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes | Performance info.

Selection criteria

Spring load and overall size

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Available sizes

■Spring Plungers - Stainless Steel

Nose
Material 		Load type Body Nose Spring Operating Temperature
Material Material Hardness Material
Stainless Steel Ultra Light Load EN 1.4301 Equiv. EN 1.4125 Equiv. 55HRC - EN 1.4568 Equiv. -30 - 260°C
Light Load
Heavy Load
Extra Heavy Load
Plastic Ultra Light Load Polyacetal - -30 - 80°C
Light Load
Heavy Load
Extra Heavy Load

■Sizes and Dimensions

Screw Dia.
(Coarse) 		Nose Body length
Diameter Stroke
M3 Ø1 1.5 15
3 15
M4 Ø1.6 2 15
4 24
M5 Ø2 3 20
5 27
M6 Ø2.5 3 25
5 30
M8 Ø3.1 3 25
5 27
M10 Ø3.8 5 30
10 43
M12 Ø5.5 5 30
10 43
15 51
M16 Ø8 10 57
15 57
20 65

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Performance info.

■Spring Load (N) of Spring Plunger (Stainless Steel)

Load type
Screw Dia.
(Coarse) 		Nose Ultra Light Load Light Load Heavy Load Extra Heavy Load
Diameter Stroke min. max. min. max. min. max. min. max.
M3 Ø1 1.5 0.12 0.4 0.4 1.3 0.8 2.94 1.1 3.42
3 0.12 0.4 0.2 1.3 0.6 2.93 0.8 3.41
M4 Ø1.6 2 0.27 0.65 0.9 2 2 8.8 6.1 13.8
4 0.18 0.65 0.6 2.1 1.9 8.75 5.8 13.6
M5 Ø2 3 0.4 3 1.4 9.7 2.7 16.3 6.8 22
5 0.35 3 1.1 10.3 1 17.1 5.7 21.5
M6 Ø2.5 3 1.8 3.05 6 9.8 8 26.4 15.8 35.6
5 1.5 3.05 3.4 9.86 4.4 26.6 12.9 34.4
M8 Ø3.1 3 1.9 3.15 6 9.9 14.7 27 21.9 36.3
5 1.4 3.15 4 9.83 6.7 26.6 14.7 34.5
M10 Ø3.8 5 1.6 4.6 5.7 14.7 8.2 45.7 24.5 58.6
10 1.6 4.6 4.4 14.7 6.2 45.1 19.8 58.7
M12 Ø5.5 5 1.7 4.7 5.8 14.7 18.2 49 34.9 63.6
10 1.6 4.7 5 14.7 8.2 49.1 25.5 63.6
15 1.8 4.7 6.9 14.7 7.5 48.9 20.1 63.7
M16 Ø8 10 2.8 10.8 9.2 34.2 18.9 68.5 38.7 88.4
15 2.6 10.8 8.6 34.4 14.4 68.6 33.9 88.1
20 2 11 7.1 34.4 4.2 68.6 25.4 88.1

* Min. load is the initial load, max. is when the Nose is depressed fully.

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Suction Cup Fittings

Suction Cup Fittings
Product name Suction Cups/with Fitting/Spring Type/Shape K
Part number MVPKN15
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes

Selection criteria

Suitable for lifting a workpiece from uneven surfaces

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Available sizes

■Suction cup with fitting (With pad) Fixed type, Top tube connection: One touch type (Shape K)

Body Material Surface Treatment Pad Shape Pad Material
Brass Electroless
Nickel Plating 		Standard Nitrile Rubber
Conductive Silicon Rubber
Fluorinerubber
Deep type Nitrile Rubber
Fluorinerubber

■Sizes and Dimensions

Pad Shape Suction pad Connection Dia. Overall Length Mounting thread DIA. x Pitch
O.D. Length
Standard Ø2 4 Ø4 28.3 M6 x 0.75
Ø3
Ø4
Ø6 7 Ø6 32.6 M10 x 1.0
Ø8 5.5 31.1
Ø10 8 34.1 M12 x 1.0
Ø15 9 35.1
Ø20 10 37.5 M14 x 1.0
Deep type Ø20 11 38.7
Ø25 12 39.7
Ø30 14 41.7
Ø40 17.5 45.2

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IDEA NOTE Centering of the suction cup by using floating joint

Floating joint allows for lateral and angular misalignment. Spring plunger are used for level restoration and centering.

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

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Application Overview

Purpose

  • Purpose
    • Correction of angular misalignment of workpiece.
  • Operation
    • Descend the arm so that the suction cups attach to a workpiece. The suction cup surface will follow the tilt of the workpiece because of the allowable angular misalignment tolerance of the floating joint. Once the workpiece is suctioned, lift the workpiece so that the angular misalignment is restored. Angular misalignment is restored by repulsive force of the spring plungers.

Target workpiece

  • Shape: Flat plates such as circuit boards, etc.
  • Size: W200 x L200 x H0.8mm
  • Weight: 500g

Design Specifications

Operating Conditions or Design Requirements

  • Arm upper surface - Suction cup surface: 57mm
  • External size: W341 x D142 x H58mm
  • Allowable lateral misalignment: 0.5, allowable angular misalignment: 4°;

Required Performance

  • Locating accuracy: ±1mm

Selection Criteria for Main Components

  • Floating joint: Shall have lateral misalignment tolerance and angular misalignment tolerance.
  • Suction cup: Shall not exceed the allowable weight of the floating joint.

Design Evaluation

Verification of main components

  • Verify the suction force is sufficient to hold workpiece.
  • Work retention weight
    • Conditional values: maximum tension using force of the floating joint: F1 = 500N
      Suction holder pad diameter: D = 1.5cm
      Vacuum level: P = -60kPa
      Number of suction holders: n = 4 [pieces], Horizontal sling safety factor: f = 4, gravitational acceleration: g = 9.8N/m²
      Pad area: C = D2 x (π / 4) = 1.77cm²
      Suction force per suction holder: W = { (C x P) / 101} x 10.13 x (1 / f) Thus, W = 2.66N
      Suction force with 4 suction holders: W' = 4 x W = 10.6N
    • F1 >> W" Thus, sufficiently safe for the floating joint.
    • Maximum weight of the workpiece = W' /g = 1.08kg Thus, safe against workpiece weight of 500g.

Other Design Consideration

  • The overall unit height can be reduced by using a floating joint.
  • Roughness of cone-shaped plunger support may hinder level restoration and centering. Make sure the finish is Ra 1.6 or better.

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 Floating Joints FJCMXS6-1.0 1
2 Spring Plungers PJHK5-5 4
3 Suction Cups - with Fittings MVPKN15 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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