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No.000161 Workpiece Separation/Feed Mechanism
Good IDEA!
50

Separation and unloading of circular workpieces with a single pneumatic cylinder

Related Category

Hinge Base - Center Fulcrum

Hinge Base - Center Fulcrum
Product name Hinge Bases/Center Fulcrum
Part number HGCNB8-W8-H25
Features Center fulcrum type hinge base that can be used as cylinder clevis mounts.
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes

Selection criteria

Suitable for the configuration to fix the cylinder economically

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Available sizes

■Hinge Bases (Selectable Sizes)

Type Material Surface Treatment
T-Shaped EN 1.1191 Equiv. Black Oxide
Electroless Nickel Plating
EN 1.4301 Equiv. -

■Sizes and Dimensions

Hinged
Diameter Width
1mm Increment 		Height
5mm Increments
Ø3 3 - 6 15 - 25
Ø4 4 - 8 20 - 30
Ø5 5 - 10
Ø6 6 - 12 25 - 35
Ø8 8 - 16
Ø10 10 - 18 30 - 40
Ø12 12 - 30
Ø13 13 - 30
Ø14 14 - 24 35 - 45
Ø15 15 - 24
Ø16 16 - 24
Ø20 20 - 30 40 - 50
Ø25 25 - 35

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Stepped Bolts

Stepped Bolts
Product name Stepped Bolts - Extra Low Head
Part number DBTS5-8-5-PC
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes

Selection criteria

Suitable for the configuration that requires double stepped end machining

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Available sizes

■Stepped Screws (Selectable Sizes)

Type Material Surface Treatment
Extra Low Head Low Head Button Head Cap Screw Phillips
○ ○ ○ ○ EN 1.1191 Equiv. Black Oxide
○ ○ ○ ○ EN 1.1191 Equiv. Electroless Nickel Plating
○ ○ ○ ○ EN 1.4305 Equiv. -

■Sizes and Dimensions

Type Screw Dia. Thread Length Stepped Dia. Stepped Length
Extra Low Head M3 3 - 6 Ø5 5 - 20
M4 4 - 8 Ø6
M5 5 - 10 Ø8
M6 6 - 12 Ø10
M8 8 - 12 Ø12
M10 10 - 15 Ø15
Low Head M3 3 - 6 Ø5 3 - 20
M4 4 - 8 Ø6
M5 5 - 10 Ø8
M6 6 - 12 Ø10
M8 8 - 12 Ø12
M10 10 - 15 Ø15
Button Head Cap Screw M3 3 - 6 Ø5 5 - 20
M4 4 - 8 Ø6
M5 5 - 10 Ø8
M6 6 - 12 Ø10
M8 8 - 12 Ø12
M10 10 - 15 Ø15
Phillips M3 3 - 6 Ø5 1 - 20
M4 4 - 8 Ø6
M5 5 - 10 Ø8
M6 6 - 12 Ø10
M8 8 - 12 Ø12
M10 10 - 15 Ø15

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Rod End Bearings

Rod End Bearings
Product name Rod End Bearings/Standard
Part number PHSCM8
* 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 the configuration of changing the cylinder movement to swinging

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Available sizes

■Rod End Bearings (Standard)

Type Material
Holder Spherical Inner Ring Bushing (Liner)
Steel EN 1.1181 Equiv.( Trivalent Chromate) EN 1.3505 Equiv.(58HRC -) Special Copper Alloy
Oil-Free Bearing I.D. 3 / 4 (Trivalent Chromate) EN 1.3505 Equiv.(58HRC -) Self-lubricating Synthetic Resin
Other Than Above EN 1.3505 Equiv.(58HRC -) Polytetrafluoroethylene Resin
Stainless Steel Oil Free EN 1.4305 Equiv. EN 1.4125 Equiv. (58HRC -) Polytetrafluoroethylene Resin

■Sizes and Dimensions

Bearing I.D. Ball Center - Holder Edge
3 12
4 14
5 16
6 18
8 22
10 26
12 30
14 34
16 38
18 42
20 46
22 50

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Accuracy Info

■Rod End Bearings Accuracy

Bearing I.D. I.D. tolerance
(H7)
3      +0.009
       0
4      +0.012
       0
5
6
8      +0.015
       0
10
12      +0.018
       0
14
16
18
20      +0.021
       0
22

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Performance info.

■Static Load Capacity of Rod End Bearings

Bearing I.D. Static Load Capacity
Radial Ca (kN)
Steel Oil-Free Stainless Steel Oil Free
3 - 1.57 -
4 - 2.25 -
5 5.59 3.92 0.98
6 6.86 5 1.44
8 9.8 7.45 2.69
10 13.2 9.41 4.16
12 16.7 11 5.88
14 20.6 15.2 6.61
16 25 20.2 8.33
18 29.4 25.2 11.52
20 34.3 27.8 -
22 41.2 35.9 -

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IDEA NOTE Separation and unloading of circular workpieces

Stacked circular workpieces are separated and unloaded by a single cylinder.

  • 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.

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

Application Overview

Purpose

  • Purpose
    • To separate and unload stacked workpieces.
  • Operation
    • Claws connected with links are turned by the cylinder. As the cylinder extrudes, the lower claws unload the workpiece at the lowermost layer. At the same time, the upper claws retain the workpiece in the second layer from the bottom. As the cylinder retracts, the workpiece is detached from the upper claws and passed downward to the lower claws that have turned.

Target workpiece

  • Shape: circular flanged pallet
  • Size: Ø100 x H10mm
  • Weight: 1kg
  • Maximum number of stacked workpieces: 5

Design Specifications

Operating Conditions or Design Requirements

  • Outer dimensions: W350 x D250 x H68mm
  • Separation and unloading of workpiece
    • Claw operation angle: 45 degrees
  • Cylinder
    • Action stroke: 21mm

Required Performance

  • Workpiece weight
    • 50N (when stacked at maximum)

Selection Criteria for Main Components

  • Oil free bushing
    • Environment resistance
    • Low load
    • Low speed

Design Evaluation

Verification of main components

  • The cylinder thrust power is verified to see whether the workpiece feed motion is possible when the workpieces are stacked at maximum.
  • Check of feed motion with workpieces stacked
    • Conditional value: workpiece m = 1kg, maximum number of stacked workpieces n = 5 pieces, gravitational acceleration g = 9.8m/s², cylinder diameter = 20mm, supply pressure = 0.5MPa, link ratio (1) = cylinder-side arm:claw arm = 4 : 3, link ratio (2) = claw arm:claw = 6 : 5, cylinder thrust power = 157N, maximum angle formed by cylinder-side arm and claw arm θ = 45°, mechanical efficiency = 50%, friction coefficient µ1 = 0.2 (oil free bushing), friction coefficient µ2 = 0.2 (resin and metal)
    • Claw operating force by cylinder: P = cylinder thrust power x link ratio (1) x link ratio (2) x mechanical efficiency x cos θ, therefore, P = 157 x (4 / 3) x (6 / 5) x 0.5 x cos (45°) = 88.8N
    • Friction resistance due to workpiece weight: F = (µ1 + µ2) x m x n, therefore,
      F = (0.2 + 0.2) x 1 x 5 = 2kg = 2 x 9.8 = 19.6N
    • Effective operation force P' = P - F = 88.8N - 19.6N = 69.2N

      From the above, the effective operation power P' = 69.2N while the overall workpiece weight is 5kg (49N). Therefore, the feed motion is possible.

Other Design Consideration

  • Optimization of workpiece height and clearance between claws.
  • Link does not require maintenance because of oil free bushing.

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 Air Cylinders MSCCA20-30 1
2 Sensors for Air Cylinders ME33L1 2
3 Brackets For Air Cylinders CTKB20 1
4 Hinge Bases HGCNB8-W8-H25 1
5 Rack Gears JZW8 8
6 Rack Gears JZF8-5 16
7 Step Screws DBTS5-8-5-PC 8
8 Stepped Bolts - Extra Low Head DBTS5-12-5-PC 1
9 Rod End Bearings PHSCM8 1
10 Workpiece Guide RGHS-1.5-20-50 4
11 Flow Rate Control Valves SPSNS6-M5 2
12 Cantilever Pin SFXNAC8A-4-F20-N10-MSC6 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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