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No.000137 Adjustable Height Clamping Mechanism
Good IDEA!
19

Simple height adjustment by manual operation

Related Category

Oil free bushing

Oil free bushing
Product name Oil Free Bushings/Copper Alloy/Standard/I.D. F7/O.D. m6
Part number MPBZ12-12
Features The most standard type in the Copper Alloy series.
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes | Accuracy Info. | Performance info.

Selection criteria

Suitable for Sliding Bearing of shaft loading / unloading.

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Available sizes

■Oil Free Bushing Copper Alloy Straight, Standard I.D. F7 O.D. m6

Material: High Tensile Brass Alloy, Solid Lubricant Embedded

I.D. O.D. Length Rotation Stopper
Screw
Ø5 Ø9 8 9 10 12 15 M4 x 8
Ø6 Ø10 8 9 10 12 15 16 19 20
Ø8 Ø12 8 9 10 12 15 16 19 20 25
Ø10 Ø14 8 9 10 12 15 16 19 20 25 30
Ø12 Ø18 8 9 10 12 15 16 19 20 25 30 35
Ø13 Ø19 9 10 12 15 16 19 20 25 30 35
Ø15 Ø21 9 10 12 15 16 19 20 25 30 35 40
Ø16 Ø22 9 10 12 15 16 19 20 25 30 35 40
Ø18 Ø24 9 10 12 15 16 19 20 25 30 35 40 M5 x 8

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Accuracy Info.

■Accuracy of Oil Free Bushing Copper Alloy Straight, Standard I.D. F7 O.D. m6

I.D. Tolerance:　F7

Recommended Mating Shaft
d8: General Use (High-Load)
f8: High Precision Use
e7: General Use (Light Load)
g6: High Precision Use (Intermittent Operation)

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Performance info.

■Load information of oil free bushing copper alloy type

Regular Non-lubricated
Maximum Allowable Load 29N/mm²
Maximum Allowable Velocity 60m/min 30m/min
Maximum Allowable PV Value 1990kgf/cm² ･ m/min 1010kgf/cm² ･ m/min

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IDEA NOTE The clamping height can be easily changed by manual operation.

The tapered portion of the horizontal pin that is arranged perpendicular to the vertical shaft is fit in any one of the grooves at different heights provided on the vertical shaft, so as to securely fix the shaft.

IDEA NOTE A spring guide is arranged beside the spring.

To prevent the spring force from directly exerting on the oil free bushing, a spring guide is installed.

  • 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

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    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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  • * 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

  • [Purpose] To clamp resin workpieces by manually switching the clamping height according to the workpiece model.
  • [Operation] To any one of the grooves at different heights provided on the vertical shaft, a horizontal pin that is arranged perpendicular to the vertical shaft is fit so as to position the clamping height. This pin securely fixes the shaft at its tapered portion. To change the clamping height, the horizontal pin is pressed to release the vertical shaft. When the work presser is set at the desired height and the pin is released, the pin is returned by the spring, the tapered portion of the pin fits in the shaft groove, and then the shaft is fixed. After that, the workpiece is clamped.

Target workpiece

  • The height of resin parts differs depending on the model.
  • Size (1): W80 x D90 x H67mm
    Size (2): W80 x D90 x H45mm
    Size (3): W80 x D90 x H30mm
  • Weight (1): 170g
    Weight (2): 110g
    Weight (3): 70g

Design Specifications

Operating Conditions or Design Requirements

  • Different heights: 3 positions
    Height (1): H67mm
    Height (2): H45mm
    Height (3): H30mm
    • Outer dimensions: W177 x D170 x H170mm

Required Performance

  • Positioning accuracy: ±0.3mm

Selection Criteria for Main Components

  • Oil free bushings with an allowable load range, within which the load applied to the vertical shaft by the tapered portion of the horizontal pin falls, are selected.

Design Evaluation

Verification of main components

  • Confirmation that the force applied to the oil free bushings is within the allowable range
    • Conditional value: taper angle of horizontal pin: θ=5°, vertical shaft diameter = oil free bushing inner diameter: d = 8mm, oil free bushing length: L = 10mm, spring coefficient of the spring:k = 0.3N/mm, spring free length: Lf = 30mm, spring length when shaft is fixed:Ls = 26mm.
    • Force applied to horizontal pin by spring when shaft is fixed:F = (Lf - Ls) x k = (30 - 26) x 0.3 = 1.2N.
    • Force at which tapered portion of horizontal pin presses shaft in lateral direction: W = F / tanθ=1.2 / tan5°=13.7N
    • Force in radial direction applied to oil free bushings:P = W / (d x L) = 13.7 / (8 x 10) = 0.17N/mm²
    • As two oil free bushings are arranged, the force applied to one bushing: P' = P / 2 = 0.085N/mm²
    • As allowable maximum load on oil free bushing, copper-alloy type is980N/mm² > P' = 0.085N/mm² , safety is secured.

Other Design Consideration

  • On vertical shafts and horizontal pin, oil free bushings are installed at two locations each.

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 Metal Washers WSSB13-4-3 1
2 Oil Free Bushings MPBZ12-12 2
3 Oil Free Bushings MPBZ8-10 4
4 Compression Springs WR16-30 1
5 Linear Shaft SSFUW8-78-M4-N4 1
6 Toggle Clamps MC01-2B 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.
    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.

    Back to top

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