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No.000172 Space-Saving Long-Stroke Mechanism

Speeding up with long stroke.

Compact Cylinders

Product name Compact Cylinders
Part number MSCCN20-50
* Orange colored cells in the table below indicate the part numbers used in this example.

Selection criteria

Effective for building a small-sized linear motion system

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Available sizes

■Compact Cylinders

Tube
I.D.
External
Size
Rod Tip Screw Stroke St Body Length
(+ St shown below)
Rod Tip
Length
Screw Type Dia. -
Pitch
5 10 15 20 25 30 35 40 45 50 75 100
φ12 □25 Tapped M3×0.5 22 3.5
φ16 □29 M4×0.7
φ20 □36 M5×0.8 29.5 4.5
φ25 □40 M6×1.0 32.5 5
φ32 □45 M8×1.25 33 7
φ40 □52 39.5
φ50 □64 M10×1.5 40.5 8
φ63 □77 46
φ12 □25 Threaded M5×0.8 22 14
φ16 □29 M6×1.0 15.5
φ20 □36 M8×1.25 29.5 18.5
φ25 □40 M10×1.25 32.5 22.5
φ32 □45 M14×1.5 33 28.5
φ40 □52 39.5
φ50 □64 M18×1.5 40.5 33.5
φ63 □77 46

* Sensors are sold separately

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Selection steps

■Selection procedure of compact cylinders (See "Technical Information" shown below for details.)

1. Define various conditions of the load

2. Calculate cylinder output (In case of double acting type)

3. Determine the tube I.D.

4. Determine the theoretical reference speed

5. Verify the cylinder's cushion mechanism

6.Verify the lateral load applicable to the cylinder

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Performance info.

■Load Information of Compact Cylinders

Min. Operating Pressure: 0.1 MPa

Max. Operating Pressure: 1.0 MPa

Theoretical Output (N) :

Tube I.D. Operation
Direction
Operating Pressure (MPa)
0.4 0.5
φ12 Outstroke 45 57
Instroke 34 42
φ16 Outstroke 80 101
Instroke 60 75
φ20 Outstroke 126 157
Instroke 94 118
φ25 Outstroke 196 245
Instroke 151 189
φ32 Outstroke 322 402
Instroke 241 302
φ40 Outstroke 503 628
Instroke 422 528
φ50 Outstroke 785 982
Instroke 660 825
φ63 Outstroke 1247 1559
Instroke 1121 1402

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Miniature linear guide

Product name Miniature Linear Guide - Short Block
Part number SE2BSZ10-115
Features Compliant with the industry standard specifications. 20% more compact than standard blocks.
* Orange colored cells in the table below indicate the part numbers used in this example.

Selection criteria

Effective for building a small-sized linear motion system

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Available sizes

■Miniature Linear Guide - Short Block

Material Hardness
Stainless Steel (440C Stainless Steel) 56HRC-
Carbon steel (Alloy Steel including SCM) 58HRC-

■Sizes and Dimensions

Number of Blocks Block Width Block Length Overall Height Rail Length
1 17 19.6 8 40-130
20 22.9 10 35-275
27 27 13 45-470
32 32.7 16 70-670
2 17 19.6 x 2pcs. 8 55-130
20 22.9 x 2pcs. 10 75-275
27 27×2pcs. 13 95-470
32 32.7×2pcs. 16 110-670

* Please see the product pages for details of selectable sizes.

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Selection Steps

■Miniature linear guide selection steps

Determination on Operating Conditions
(Moving mass, feed rate, motion pattern, life)

Temporary selection of linear guide specifications
(Block type, overall height, rail length are temporarily selected according to the conditions of use.)

Basic safety check
  • Allowable Load
  • Operating Life
  • Preload

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Accuracy Info

Preload and Accuracy Reference (Standard Blocks / Light Preload / High Grade)

(μm)

Radial Clearance -3~0
H Dimension Tolerance ±20
Pair variation of H 15
Tolerance of dims. W2 ±25
Pair variation of W2 20

(μm)

Rail Length(mm)
-80 81-200 201-250 251-400 401-500 501-630 631-700
Running Parallelism 3 7 9 11 12 13.5 14

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Technical Calculations

Operating Life Calculation for Linear Guides

Operating Life
When the linear guide is loaded in linear reciprocating motion, scaly damages called flaking appear due to material fatigue as the stress works on the rolling elements (steel balls) and the rolling contact surfaces (rails) constantly. Total travel distance until the first flaking occurs is called the life of linear guides.
Rated life
Rated life is the total travel distance that 90% of linear guides of the same type can reach, under the same conditions, with no occurrence of flaking damage. Rated life can be calculated with the basic dynamic load rating and the actual load applied on the linear guides, as shown below.
Load must be calculated before actually using linear guides. To obtain loads during linear reciprocating motion, it is necessary to fully consider vibrations and impacts during motion as well as distribution condition of the load applied to linear guides. So, it is not easy to calculation the loads. Operating temperature also critically affects the life. Considering these conditions, the above-mentioned calculation formula will be as follows.
  • L: Rated life (km)
  • fH: Hardness Factor (See Fig-1)
  • fT: Temperature Factor (See Fig-2)
  • fC: Contact Factor (See Table-1)
  • fW: Load Factor (See Table-2)
  • C: Basic Dynamic Load Rating (N)
  • P: Applicable load (N)
Hardness factor (fH)

For liner guide applications, sufficient hardness is required for ball contact shafts. Inappropriate hardness causes less allowable load, resulting in shorter life.
Please correct the rated life with the hardness factor.

Temperature factor (fT)

When the temperature of linear guides exceeds 100°C, the hardness of guides and shafts will be reduced, and the allowable loads will also be reduced compared to being used at room temperature, causing a reduction of life. Please correct the rated life by the temperature factor.
* Please use Linear Guides within the resistant temperature range shown on product pages.

Contact factor (fC)

Table-1. Contact factor

Number of Blocks per Rail Contact Factor fC

1 1.00
2 0.81
3 0.72
4 0.66
5 0.61

For actual applications, more than two blocks are generally used per shaft. In this case, the load applied to each block varies depending on machining precision and is not uniformly distributed. As a result, per-block allowable load varies depending on the number of blocks per rail. Please compensate the rated life with contact factors on Table-1.

Load factor (fW)

Table-2. Load factor

Condition of Use fw
No shocks / vibrations,
low speed: 15 m/min. or less
1.0-1.5
No significant shocks / vibrations,
medium speed: 60 m/min. or less
1.5-20
With shocks / vibrations,
high speed: 60 m/min. or more
2.0-3.5

To calculate load applied to the Linear Guides, in addition to object weight, it requires inertia force attributed to motion velocity or moment loads. However, it is difficult to calculation the load accurately due to potential vibrations and shocks caused by other element than repeated start-stop motions during reciprocating motion. Thus, Table-2 load factor helps simplify the life calculation.

Applied Load P Calculation Method
When moment load is applied to each block, convert the moment load into applied load by the following formula.
  • P: Applicable Load (N)
  • F: Downward load (N)
  • C0: Static Load Rating (N)
  • MA: Allowable Static Moment - Pitching Direction (N・m)
  • MC: Allowable Static Moment - Rolling Direction (N・m)
  • Lp: Load Point Distance (m) in Pitching Direction
  • Lr: Load Point Distance (m) in Rolling Direction

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Floating joint

Product name Floating Connectors - Extra Short Threaded Stud Mount
Part number FJCMX5-0.8
Features Floating joints that can be used where there is little distance between cylinders and moving objects.
* Orange colored cells in the table below indicate the part numbers used in this example.

Selection criteria

Suitable for absorbing deviations in the radial direction.

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Available sizes

■Floating Connectors - Extra Short Threaded Stud Mount

Body / Cover Joints Spring Washer
Material Surface Treatment Material Surface Treatment Hardness Material Material Surface Treatment Hardness
1045 Carbon Steel Black Oxide 1045 Carbon Steel Black Oxide 35 - 45
HRC
304 Stainless Steel−WPB 304 Stainless Steel Nitriding Treatment 600HV -
304 Stainless Steel 440C Stainless Steel

■Sizes

Cylinder Mounting Side Output Side Allowable Misalignment
[U]
Allowable Angular Deviation
[A]
Body
Thickness
Body
Hex size
Overall Length
Screw Dia.-Pitch thread length Screw Dia.-Pitch thread length
M5-0.8 6 M8-1.25 8.5 0.5 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

<Allowable lateral misalignment U and allowable angular misalignment A>

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IDEA NOTE Air Cylinder and Linear Guide.

The first set of linear guides and air cylinder at as the first stage of lifting.

IDEA NOTE Increase Speed with Additional Cylinder and Linear Guides.

The additional set of linear guides and air cylinder act as second stage of vertical lifting mechanism for increased speed.

  • TERMS AND CONDITIONS FOR USE OF CAD DATA
    Your access to the CAD data that MISUMI Corporation (hereinafter referred to as the Company) posts on this site (including 3D CAD data, intermediate 3D CAD data and 2D CAD data; hereinafter referred to as the Data) are of products manufactured and/or sold by the Company (hereinafter referred to as the Products) assumes that you have read and accepted these terms and conditions which govern your use of the Data. If you do not agree to these terms and conditions, you must stop using this website and the Data. You must not use the Data for any unlawful purpose or in any manner inconsistent with these terms and conditions.
    1. CAD Data
    The Data is prepared for assisting the Company's users in the CAD design process by providing dimensions and other Product information. In order to provide the best speed and stability working within this site, the Product drawings were simplified to reduce the size of the Data. For instance, some of the Products are shown without the oil groove shape, screws or spring shape. Also, please be aware that the tolerance, surface roughness and/or chamfer of the Data may vary from the actual Products.
    2. Disclaimer on Data
    While the Company has carefully prepared the Data, accuracy of the Data is not guaranteed and is subject to the variances as described above. The Company may also modify, add or delete the Data at any time without prior notice. The Company assumes no liability for any direct, indirect, consequential or special damages that you may claim resulted from your use of the Data or any changes to or deletions of the Data regardless of the reason. The Company provides no warranty as to the quality, accuracy, functionality, safety or reliability of the combination of Products and parts. Example applications and combinations of the Products are provided for illustrative purposes only.
    3. Copyright
    Copyrights to the content and the Data belong to the Company or the manufacturers of the Products. The said copyright is protected by the Copyright Act and international treaties. The use (including duplication, modification, uploading, posting, transmission, distribution, licensing, sales and publishing) of the Data except for the purpose to use the Data described above without prior approval of the Company is not allowed. The Data cannot be used for any purposes (including sales promotion) except for designing your machine. If you violate this provision or the laws or regulations, the Company may prohibit you from the use of the Data, the Company’s site and/or take legal action. So long as you comply with these terms and conditions, the Company grants to you a non-exclusive, non-transferable, revocable license to access and use the Data for the sole purpose of assisting you in designing machines that incorporate products.
    In case that the CAD data is found to have been to be used for any purpose other than mentioned above or against the related laws, MISUMI may take legal actions, including the one for blocking the involved user from using CAD data and from accessing to the MISUMI site.
    4. Disclaimer of Warranty
    ANY AND ALL CONTENT APPEARING ON THIS WEB SITE IS PROVIDED FOR INFORMATIONAL PURPOSES ONLY. THIS WEB SITE, ITS CONTENT AND ITS LINKS ARE PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS AND ARE USED ONLY AT YOUR SOLE RISK, TO THE FULLEST EXTENT PERMISSIBLE BY LAW. THE COMPANY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, OF ANY KIND, REGARDING THIS WEB SITE (INCLUDING ITS CONTENT, HARDWARE, SOFTWARE AND LINKS), INCLUDING AS TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, TITLE, NON INFRINGEMENT, RESULTS, ACCURACY, COMPLETENESS, ACCESSIBILITY, COMPATIBILITY, SECURITY AND FREEDOM FROM COMPUTER VIRUS. THE COMPANY WILL NOT BE LIABLE FOR ANY DAMAGES OR LOSSES, INCLUDING DIRECT, INDIRECT, CONSEQUENTIAL, SPECIAL, INCIDENTAL OR PUNITIVE DAMAGES AND/OR LOST PROFITS, IN CONNECTION WITH USE OF THE INTERNET, THIS WEB SITE, ITS CONTENT OR ITS LINKS
    Further, the Company will not be liable to you for any failure or delay by the Company to provide access to the Data or any of its obligations under these terms and conditions where such failure or delay is the direct or indirect result of any circumstances beyond the Company's reasonable control (and the Company's obligations will be suspended for the duration of such circumstances).

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  • * Unit assembly Data consists of some sub-assemblies.
       It is configured so that each sub-assembly unit can be used as it is or edited.

Application Overview

Purpose

  • Purpose
    • Provide long stroke vertical motion using two stages of linear guides and air cylinders.
  • Operation
    • The two stage design allows for longer stroke.

Target workpiece

  • Shape: box shape workpiece
  • Size: W100 x D80 x H50mm
  • Weight:1kg

Design Specifications

Operating Conditions or Design Requirements

  • Ascending/descending stroke: 100mm
  • Cylinder stroke:50mm
  • Tube inner diameter:φ20mm
  • Cylinder output:126×70%N(Applied pressure 0.4MPa)
  • Outer dimensions:W230×D105×H157(H245 when ascended)mm

Required Performance

  • Running parallelism:15×2=30μm
  • Allowable Load:60N

Selection Criteria for Main Components

  • Air Cylinder
    • Stroke of 50mm or longer and output of 30N or above

Design Evaluation

Verification of main components

  • A cylinder is selected so that the force required for raising the workpiece is obtained.
  • Ascending output
    • Conditional value: target workpiece mass: M1 = 1kg, ascending structure mass: M2 = 2kg, ascending stroke: L = 100mm, gravitational acceleration g = 9.8m/s², air pressure: a = 0.4MPa, cylinder load factor: η = 70% = 0.7
    • Load applied during ascending:W=W1+W2=M1×g+M2×g=1×9.8+2×9.8=9.8+19.6=29.4N
    • Required cylinder thrust:P=W/η=29.4/0.7=42N
      ⇒A cylinder with a cylinder inner diameter of φ12mm or higher is selected.
    • Stroke: L = 100mm, stroke required for each cylinder: L' = L/2 = 100/2 = 50mm
      ⇒A standard cylinder with a stroke of 50mm and an inner diameter is φ20mm is selected.
    • Based on the thrust of a cylinder with a φ20 inner diameter mm: P', the allowable ascending load: W' is verified.
      P'=π/4×20²×0.4=126N
      W'=P'×η-W2=126×0.7-19.6=68.6N
      ⇒Allowable ascending load:W'=68.6N

Other Design Consideration

  • Cylinder tube inner diameter will usually increase with stroke.
    Linear guide must have length equivalent to stroke.

Explore Similar Application Examples

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Part List

No. Part Name Sample Picture MISUMI Part Number Quantity Unit Price*
($)
Days to Ship* Catalog Page Number
1 Compact Cylinders MSCCN20-50 2 Price check 2_1485_2014
2 Flow Rate Control Valves - 90 Deg. Elbow MNSPS6-M5 4 Price check 2_1515_2014
3 Sensors for Cylinders MD13L1 4 Price check 2_1486_2014
4 Miniature Linear Guides - Short Blocks, Light Preload / Slight Clearance SE2BSZ10-115 4 Price check 1_545_2014
5 Floating Joints -Extra Short Threaded Stud Mount/Threaded FJCMX5-0.8 2 Price check 2_1549_2014
6 Guides/L-Shaped WGLN-20-10-12 4 Price check 1_1741_2014
  • The part list above only contains MISUMI parts.
    Part list download (CSV) includes MISUMI and third party components used in this example.
  • For price and shipping date see the Web Order System.
  • TERMS AND CONDITIONS FOR USE OF CAD DATA
    Your access to the CAD data that MISUMI Corporation (hereinafter referred to as the Company) posts on this site (including 3D CAD data, intermediate 3D CAD data and 2D CAD data; hereinafter referred to as the Data) are of products manufactured and/or sold by the Company (hereinafter referred to as the Products) assumes that you have read and accepted these terms and conditions which govern your use of the Data. If you do not agree to these terms and conditions, you must stop using this website and the Data. You must not use the Data for any unlawful purpose or in any manner inconsistent with these terms and conditions.
    1. CAD Data
    The Data is prepared for assisting the Company's users in the CAD design process by providing dimensions and other Product information. In order to provide the best speed and stability working within this site, the Product drawings were simplified to reduce the size of the Data. For instance, some of the Products are shown without the oil groove shape, screws or spring shape. Also, please be aware that the tolerance, surface roughness and/or chamfer of the Data may vary from the actual Products.
    2. Disclaimer on Data
    While the Company has carefully prepared the Data, accuracy of the Data is not guaranteed and is subject to the variances as described above. The Company may also modify, add or delete the Data at any time without prior notice. The Company assumes no liability for any direct, indirect, consequential or special damages that you may claim resulted from your use of the Data or any changes to or deletions of the Data regardless of the reason. The Company provides no warranty as to the quality, accuracy, functionality, safety or reliability of the combination of Products and parts. Example applications and combinations of the Products are provided for illustrative purposes only.
    3. Copyright
    Copyrights to the content and the Data belong to the Company or the manufacturers of the Products. The said copyright is protected by the Copyright Act and international treaties. The use (including duplication, modification, uploading, posting, transmission, distribution, licensing, sales and publishing) of the Data except for the purpose to use the Data described above without prior approval of the Company is not allowed. The Data cannot be used for any purposes (including sales promotion) except for designing your machine. If you violate this provision or the laws or regulations, the Company may prohibit you from the use of the Data, the Company’s site and/or take legal action. So long as you comply with these terms and conditions, the Company grants to you a non-exclusive, non-transferable, revocable license to access and use the Data for the sole purpose of assisting you in designing machines that incorporate products.
    In case that the CAD data is found to have been to be used for any purpose other than mentioned above or against the related laws, MISUMI may take legal actions, including the one for blocking the involved user from using CAD data and from accessing to the MISUMI site.
    4. Disclaimer of Warranty
    ANY AND ALL CONTENT APPEARING ON THIS WEB SITE IS PROVIDED FOR INFORMATIONAL PURPOSES ONLY. THIS WEB SITE, ITS CONTENT AND ITS LINKS ARE PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS AND ARE USED ONLY AT YOUR SOLE RISK, TO THE FULLEST EXTENT PERMISSIBLE BY LAW. THE COMPANY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, OF ANY KIND, REGARDING THIS WEB SITE (INCLUDING ITS CONTENT, HARDWARE, SOFTWARE AND LINKS), INCLUDING AS TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, TITLE, NON INFRINGEMENT, RESULTS, ACCURACY, COMPLETENESS, ACCESSIBILITY, COMPATIBILITY, SECURITY AND FREEDOM FROM COMPUTER VIRUS. THE COMPANY WILL NOT BE LIABLE FOR ANY DAMAGES OR LOSSES, INCLUDING DIRECT, INDIRECT, CONSEQUENTIAL, SPECIAL, INCIDENTAL OR PUNITIVE DAMAGES AND/OR LOST PROFITS, IN CONNECTION WITH USE OF THE INTERNET, THIS WEB SITE, ITS CONTENT OR ITS LINKS
    Further, the Company will not be liable to you for any failure or delay by the Company to provide access to the Data or any of its obligations under these terms and conditions where such failure or delay is the direct or indirect result of any circumstances beyond the Company's reasonable control (and the Company's obligations will be suspended for the duration of such circumstances).

    CAD Download (Unit Assembly)

    CAD Download: File Format
    生成

    Thank you for downloading the data.

    Click the Good IDEA! button when you find interesting design tips.


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

    CAD Data Limitations

    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. Unit assembly Data consists of some sub-assemblies.
      It is configured so that each sub-assembly unit can be used as it is or edited.
    3. * The part in the frame is a sub-assembly unit.

    4. The Data for fabricated parts is based on easy-to-edit dimensions and shapes in sketches and histories.
    5. The Data including the third-part components are made by the Company.

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