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inCAD Library

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  • Helpful application examples for mechanical engineers.

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    collected from dozens of industries!

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No.000273 Guide Setup Changing Mechanism
Good IDEA!
40

The guides of the transfer conveyor can be changed continuously.

Relevant category

Tensioner Units

Tensioner Units
Product name Tensioner Units
Part number TNSR10-Y28-F10
Features Tensioner unit easy to assemble. Can be used by chain or belt drive.
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes

Selection criteria

Utilizing a commercially available part diminishes design time.

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Available sizes

■Tensioner Units

Material Surface Treatment
Fixing Plate Tension Pin Slide Plate Tension Block
1018 Carbon Steel-D 1045 Carbon Steel 1045 Carbon Steel
(precision casting) 		1018 Carbon Steel-D Black Oxide
Electroless Nickel Plating

■Sizes and Dimensions

Tension Pin
Shaft Dia. 		1mm Increments Stroke A B T J Z
Y F
10 10～50 8～50 25 120 50 6 24 21
12
15 12～60 10～50 25 125 55 9 31 29
17 30 140 60 30
20

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Idlers with Teeth

Idlers with Teeth
Product name Flanged Idlers with Teeth - P2M / P3M / P5M / P8M / 2GT / 3GT / 5GT / 8YU
Part number AGTF24GT5120
Features Can be used as the tension adjuster for timing belts or as the pulley on the driven side.
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria | Available sizes

Selection criteria

Select commercially available item because it simplifies the design.

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Available sizes

■Flanged Idlers with Teeth - P2M / P3M / P5M / P8M / 2GT / 3GT / 5GT / 8YU

Type Material Surface Treatment
Center Bearing Both Sides Bearing Main Body Flange Bearing
○ ○ 2017 Aluminum Alloy 5052 Aluminum Alloy Steel Clear Anodize
- - Hard Clear Anodize
○ ○ 1045 Carbon Steel Low Carbon Steel Black Oxide

■Sizes and Dimensions

Number of Teeth Applicable Belt Shaft Dia. Standard Circle Dia. O.D. Tooth Width
40 GT2060 6 25.46 24.96 30
GT2090 6
30 GT3060 6 28.65 27.89 32
GT3090 6
20 GT5090 8 31.83 30.69 35
GT5120 8
24 GT5090 10 38.20 37.06 42
GT5120 10
28 GT5090 10 44.56 43.42 48
GT5120 10
30 GT5090 12 47.75 46.61 51
GT5120 12
20 YU8150 20 50.93 49.56 62
YU8200 20
30 YU8150 25 76.39 75.02 85
YU8200 25
YU8250 25

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Lead screw

Technical calculations

Selection criteria

Select a Lead screw with both left and right hand threading.

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Available sizes

■Lead Screws - Both Ends Stepped

Material Surface Treatment Compatible Lead Screw Nut
Type Material
1045 Carbon Steel − Right / Left-hand Thread Brass
Black Oxide
Low Temp. Black Chrome Plating
303 Stainless Steel −

■Sizes and Dimensions

Screw Shaft Nominal Pitch Overall Length
1mm Increments
14 3 80〜1000
16 100〜1200
18 4 150〜1200
20
22 5
25
28
32 6 200〜1200

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Accuracy Info

■Lead Screw: Screw Shaft Runout Tolerance (Max.)

(mm)

Shaft Dia. Screw Shaft Length
-125 126
-200 		201
-315 		316
-400 		401
-500 		501
-630 		631
-800 		801
-1000 		1001-
1250 		1251-
1600 		1601-
2000
φ8 0.1 0.14 0.21 0.27 0.35 - - - - - -
φ10-12 0.09 0.12 0.16 0.21 0.27 0.35 0.46 0.58 - - -
φ14 0.09 0.11 0.13 0.16 0.2 0.25 0.32 0.42 - - -
φ16 0.09 0.11 0.13 0.16 0.2 0.25 0.32 0.42 0.55 0.73 1
φ18-20 - 0.11 0.13 0.16 0.2 0.25 0.32 0.42 0.55 0.73 1
φ22-32 - 0.09 0.11 0.13 0.16 0.19 0.23 0.3 0.38 0.5 0.69
φ36-50 - 0.11 0.11 0.11 0.13 0.15 0.17 0.22 0.27 0.34 0.46

■Lead Screw Accuracy Standards

Item Content
Allowable Dimension and Tolerance JISB0217 0218
Screw Accuracy 7e Class
Nut Accuracy 7H Class
Single Pitch Error ±0.02
Accumulated Pitch Error ±0.15/300mm
Length Tolerance JISB0405 (medium class)
Screw Shaft End DIA. Tolerance h7

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Technical calculations

■Lead Screw and Lead Screw Nut Selection Steps

Calculate Contact Pressure P and Sliding Velocity V based on conditions of use to check that no abnormal wear will occur.
Plot the calculated P and V values against the PV value graph and confirm the intersection.
If the intersection falls inside of line (1) and (2), it is determined that abnormal wear would not occur

Determine Conditions of Use

↓

Lead Screw and Lead Screw Nut Temporary Selection

↓

(1) Contact surface pressure P, (2) Sliding speed V calculations
Verify that the value is within (1) and (2) of the PV value graph

↓

Calculate Screw Efficiency η and Load Torque T

(axial load, rotational speed)

 

(lead screw and lead screw nut material)

↑

(If not good)

PV Value Graph

  • (1) Steel (lubrication) - Brass
  • (2) Steel (non-lubrication) - Plastic
PV Value graph

(1) Contact Surface Pressure P (N/mm²)

Contact Surface Pressure P
  • Fs: Shaft Axial Load (N)
  • F0: Allowable Dynamic Thrust (N)　 -> Nuts for Lead Screw Specifications
    Thrust when contact surface pressure of the lead screw and nut becomes 9.8 (N/mm²)
  • α: 9.8 (brass)　 0.98 (plastic)

(2) Sliding Speed V (m/min)

すべり速度V
  • d2: Screw Shaft Effective DIA. → From Lead Screw Specifications Table
  • d: Screw Shaft Lead Angle (deg.)　 -> Lead Screw Specifications
  • n: Screw Shaft Rotation per Minute (min-1)

(3) Screw Efficiency η

Screw Efficiency η
  • μ: Dynamic Friction Coefficient
  • d: Screw Shaft Lead Angle (deg.)

Thread Shaft Nuts for Lead Screws Dynamic Friction Coefficient μ
Steel (lubrication) Brass 0.21
Steel (non-lubrication) Polyacetal/
PPS Resin with Sliding Property		 0.13

(4) Load Torque (N・cm)

Load Torque
  • Fs: Shaft Axial Load
  • η: Screw Efficiency
  • R: Lead (cm)

IDEA NOTE Continuous changeover of the workpiece guides

The guides are moved to any width by rotating the left and right screws with a motor.

  • 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 posted on https://th.misumi-ec.com/ (hereinafter referred to as the "Website") operated by MISUMI (THAILAND) CO., LTD. (hereinafter referred to as "MISUMI"). 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 accuracy 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 MISUMI’s CAD 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:
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    (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;
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    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, 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.
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    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.
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    Customers shall comply with all applicable laws and regulations regarding the export of the Data.
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    MISUMI may, at any time, and in its sole discretion, modify these terms and conditions; any such modification will be effective immediately.
    9. Severability
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    These Terms and any disputes arising in connection therewith shall be exclusively governed by and construed in accordance with the laws of Thailand, without regard to its conflicts of law principles. The authorized courts in Thailand shall have exclusive jurisdiction to adjudicate any dispute arising in connection with these Terms.

    Revised: 16th November, 2025

    CAD Download (Unit Assembly)

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    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.

    Good IDEA!

    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.

    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 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

  • Motor drive is able to adjust the guides as needed.
  • Guide stays in sync because both left and right hand lead screws are used.

Points for use

  • The motor moves the guides to a specified width.

Target workpiece

  • Box
  • External dimensions: W150 ~ 300 ｘ H150 x L400mm
  • Workpiece mass: 3 - 5kg

Design Specifications

Operating Conditions or Design Requirements

  • External Dimensions
    W500ｘH340ｘL1000mm
  • Guide dimensions
    H220ｘL1000ｘT9mm

Required Performance

  • Positioning precision: ±1mm unit

Selection Criteria for Main Components

  • Motor
    • Select a motor that can handle the weight of the guide.

Design Evaluation

Verification of main components

  • Verify allowable motor torque for meeting the required torque.
  • Motor
    • Conditional values: Guide weight W = 17 kg/piece, thread pitch P = 0.003m, thread efficiency η = 0.24, guide friction coefficient μ = 0.1, gravitational acceleration g = 9.8m/s², number of guides 2pieces
    • Required torque: T = W × g × μ × P/(2 × π × η)　Thus, T = (17 × 2) × 9.8 × 0.1 × 0.003/(2 × π × 0.24) = 0.07(N・m) < 0.57(N・m) (60Hz)
    • Safety factor: 0.57/0.07 = 8.1

Other Design Consideration

  • An idler is installed at the middle point of the timing belt to adjust tension.

Explore Similar Application Examples

Page - / -

Part List

No. Part Name Sample Picture MISUMI Part Number
(click the Part Number below for details) 		Quantity
1 Couplings MCORK34-10-15 1
2 Gear Motors PACMR90-W90-V100 1
3 Tensioner TNSR10-Y28-F10 1
4 Flanged Idler AGTF24GT5120 1
5 Timing Belts GBN900EV5GT-120 1
6 High Torque Timing Pulleys GPA20GT5120-B-H10 2
7 Linear Shaft VPFJT20-200-M5 8
8 Linear Bushings LHMRW20 8
9 Lead Screws MTSYW16-545-F20-V10-S65-Q10-X200 2
10 Lead Screw Nuts MTSFR16 2
11 Oil Free Bushings MPFZ10-15 4
12 Gear Motors PACMGZ90-20 1
14 Socket Head Cap Screws-with Washer SCBS5-25 12
15 Socket Head Cap Screws-with Washer SCBS6-15 16
16 Socket Head Cap Screws-with Washer SCBS8-25 2
17 Lead Screw Nuts MTSFL16 2
  • The part list above only contains MISUMI parts.
    Part list download (CSV) includes MISUMI and third party components used in this example.
  • 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 posted on https://th.misumi-ec.com/ (hereinafter referred to as the "Website") operated by MISUMI (THAILAND) CO., LTD. (hereinafter referred to as "MISUMI"). 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 accuracy 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 MISUMI’s CAD 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 MISUMI's consent;
    (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 MISUMI’s consent;
    (7)Altering the content, reverse engineering, decompiling, disassembling, or analyzing the Data;
    (8)Publicly disclosing or exhibiting the Data without MISUMI's consent;
    (9)Using the Data for the purpose of providing products and services identical or similar to those of MISUMI;
    (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, 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.
    10．Miscellaneous
    These Terms and any disputes arising in connection therewith shall be exclusively governed by and construed in accordance with the laws of Thailand, without regard to its conflicts of law principles. The authorized courts in Thailand shall have exclusive jurisdiction to adjudicate any dispute arising in connection with these Terms.

    Revised: 16th November, 2025

    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.

    Good IDEA!

    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.

    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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