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No.000187 Traverse mechanism for heavy workpieces

Converting rotary motion into linear motion

Related Category

Linear Guides for Extra Super Heavy Load

Product name Linear Guides/Extra Super Heavy Load/With Resin Retainer
Part number SE2RZ36-1120
Features Recirculating bearing balls are separated by resin retainers resulting in low-noise and smooth movements of the guide.
* Orange colored cells in the table below indicate the part numbers used in this example.

Selection criteria

Choose the size based on workload.

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Available sizes

■Linear Guides for Extra Super Heavy Load with Plastic Retainers, Interchangeable, Light Preload

Material Hardness
Carbon Steel 58HRC -

■Sizes and Dimensions

Number of Blocks Block Width Block Length Overall Height Rail Length
1 44 91.8 30 220 - 1960
48 107 36 220 - 1960
60 124.6 42 280 - 1960
2 44 91.8 x 2pcs. 30 220 - 1960
48 107 x 2pcs. 36 220 - 1960
60 124.6 x 2pcs. 42 280 - 1960

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

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Selection Steps

■Linear guide selection steps

Determine application 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 (Linear Guides for Extra Super Heavy Load with Plastic Retainers, Interchangeable, Light Preload)

(µm)

Radial
Clearance
H30 ・ H36 -5 ~ 0
H42 -7 ~ 0
H Dimension Tolerance ±20
Pair variation of H 15
Tolerance of dims. W2 ±30
Pair variation of W2 25

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Performance info.

■Linear guide performance info. (Linear Guides for Extra Super Heavy Load with Plastic Retainers, Interchangeable, Light Preload)

Overall Height Basic Load Rating Allowable Static Moment
C (Dynamic) kN Co (Static) kN MA
N・m
MB
N・m
Mc
N・m
30 21.6 44.5 360 305 298
36 32.0 62.5 615 515 490
42 46.0 91.5 1000 885 870

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Technical Calculations

■Linear guide life calculations

●Life
When linear guides operate in linear motion while supporting loads, repeated stresses apply on the rolling elements (balls) and raceways (rails), eventually causing scale-like flaking due to material fatigue. The total run distance until this flaking appears is defined as linear guide's "Life".
●Rated Life
Rated life is a total distance 90% of linear guides reach without flaking when a group of the same guides are run under the same condition. The rated life can be calculated with basic dynamic load rating and the load applied on the guides as follows.
When using linear guides, load calculations are initially needed. It is not easy to calculate the loads during linear motion due to vibrations and shocks, as well as load distribution on the guides. Furthermore, operating environment temperature has large effect on life. When these conditions are taken in consideration, the calculations would 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)

In using linear guides, the shaft that balls contact must have sufficient hardness, If adequate hardness cannot be obtained, load rating decreases and life will be reduced as a result.

●Temperature factor (fT)

When the temperature of linear guides exceed 100°C, hardness of blocks and rails will be reduced, causing reduction of life. Please compensate the life rating with temperature factor. 
* Please use linear guides within temperature 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

In general, it is common to use 2 or more blocks on 1 rail. In such case, load applicable on each block would not be uniform due to machining variations. As the result, allowable load rating on each block would vary depending on the number of blocks used per rail. Please compensate the life rating with contact factor shown on Table-1.

●Load Factor (fW)

Table-2. Load factor

Condition of Use fw
No external shocks or vibrations and
speed is low 15m/min or less
1.0 - 1.5
No significant shocks or vibration and
med. speed 60m/min or less
1.5 - 20
External shocks and vibrations exist
and the speed is high 60m/min or over
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.

●Applicable load calculation method
When load is applied to the a block, convert moment load into applied load by the following formula.
  • P: Applicable Load (N)
  • F: Downward load (N)
  • Co: 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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Keyless Bushings

Product name Keyless Bushings/Standard
Part number MLHS35
Features A hub (such as pulleys, gears and sprockets) can be easily connected with shaft by tightening mechalock screws.
* Orange colored cells in the table below indicate the part numbers used in this example.

Selection criteria

Size according to pulley size, shaft size and allowable transmitted torque.

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Available sizes

■MechaLock Standard Type (with Centering Function)

 Body Material Surface Treatment
EN 1.1191 Equiv. -
Black Oxide
Electroless Nickel Plating
EN 1.4301 Equiv. -

■Sizes and Dimensions

Shaft Bore Dia. Outer Ring Dia.
(pilot)
Inner Ring O.D.
(shoulder)
Shoulder Height Pilot Length
Ø28 Ø46 Ø50 3.5 17.3
Ø30 Ø48 Ø52
Ø32 Ø50 Ø54 18.3
Ø35 Ø57 Ø62 4 19.5
Ø38 Ø60 Ø65 20
Ø40 Ø62 Ø67 20.5
Ø42 Ø64 Ø69
Ø45 Ø67 Ø72 21

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Accuracy Info

■Recommended Tolerance of Applicable Shaft and Hub

Tolerance Finish Surface Roughness
Shaft O.D. h7 (g6) Ra1.6 or less
Hub I.D. H7 Ra3.2 or less

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Performance info.

■Load info of the MechaLock Standard Type (with Centering Function)

Shaft Bore Dia. EN 1.1191 Equiv. / -, EN 1.1191 Equiv. / (Black Oxide) EN 1.1191 Equiv. / Electroless Nickel Plating EN 1.4301 Equiv. / -
Max Allowable
Torque
Allowable
Thrust
Load
Screw
Tightening Torque
Screw
Tightening Torque
Max. Allowable
Torque
Allowable
Thrust
Load
Screw
Tightening
Torque
Max Allowable
Torque
Allowable
Thrust
Load
Screw
Tightening
Torque
(N・m) (N・m)
(N・m) (kN) No Surface
Treatment
Black Oxide (N・m) (kN) (N・m) (N・m) (kN) (N・m)
Ø28 380 27 8.8 7.5 295 21.1 8.8 213.8 15.2 5.6
Ø30 410 396 26.4 229.5 15.3
Ø32 440 423 244.2 15.2
Ø35 720 41.1 15.7 12.7 548 31.3 15.7 301.1 17.16 9.6
Ø38 770 40.2 741 39 409 21.48
Ø40 810 779 430.6
Ø42 850 823 39.2 452.2
Ø45 1200 52.9 882 484.6

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Adjusting Bolts

Product name Adjusting Bolts/Knurled head with Hex Socket
Part number AJKTN10-50
* Orange colored cells in the table below indicate the part numbers used in this example.

Selection criteria

Easy to use/operate to adjust belt tension.

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Available sizes

■Adjusting Bolt with Hex Socket Knurled Knobs

Screw Type Material Surface Treatment
Coarse Thread EN 1.1191 Equiv. Black Oxide
Electroless Nickel Plating
EN 1.4301 Equiv. -
Fine thread EN 1.1191 Equiv. Black Oxide
Electroless Nickel Plating

■Sizes and Dimensions

Thread Dia. x Pitch Thread Length
(5mm increments)
Block Bearing Part Knob EN 1.1191 Equiv. EN 1.4301 Equiv.
Fine Thread Coarse Thread Diameter Length Length O.D.
- M3 x 0.5 10 ~ 45 Ø2.5 7 7 Ø10 -
M4 x 0.5 M4 x 0.7 10 ~ 60 Ø3.5
M5 x 0.5 M5 x 0.8 10 ~ 70 Ø4.5 9 15 Ø15
M6 x 0.75 M6 x 1.0 15 ~ 80 Ø5.5
M8 x 0.75 M8 x 1.25 20 ~ 100 Ø7.5 12
M10 x 1.0 M10 x 1.5 25 ~ 100 Ø9.5 16 25 Ø20 -
M12 x 1.0 M12 x 1.75 25 ~ 150 Ø11.5 19 -
- M16 x 2.0 25 ~ 150 Ø15.5 Ø24 -

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Accuracy Info

■Accuracy of the Adjusting Bolts

Block Support
Shaft Dia. Tolerance: -0.1 / -0.2
Length Tolerance: +0.2 / +0.1
Surface Roughness: Ra1.6

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IDEA NOTE High accuracy positioning of heavy loads

Combining linear guides with low coefficient of friction with servo motor allows high accuracy positioning even with heavy loads.

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    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
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    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.
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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

  • Traverse mechanism using linear guides that support load that reduces needed transportation power.
  • The shuttle mechanism converts rotary motion from the servomotor into linear motion of the plate on linear guides via a shaft, a pulley, and a belt.

Points for use

  • Automatic mechanism by a servomotor.

Target workpiece

  • Large trey + workpieces.
  • External dimensions: W125 x D125 x H150mm (carrying max. 12 pieces per pallet)
  • Workpiece weight: 535kg

Design Specifications

Operating Conditions or Design Requirements

  • Slide stroke: 500mm
  • External dimensions: W700 x D1890 x H228mm

Required Performance

  • Trey positioning repeatability: ±0.02mm
  • Transportable weight: 535 x µ ( = 0.03) = 16.05kg

Selection Criteria for Main Components

  • Motor
    • To meet requirement for high accuracy positioning.
  • Linear guide
    • Reducing the transport weight.
    • To meet requirement for reciprocating straight movement accuracy.

Design Evaluation

Verification of main components

  • Verify the timing belt and the servomotor for durability against load weight and meeting the requirement for transportation speed.
  • Timing belt
    • Allowable tension: 4320N
    • Servomotor maximum torque: 14.4N・m
    • Motor shaft dia.: 0.035m
    • Maximum torque at pulley diameter 0.098m: 14.4 x 0.098 / 0.035 = 40.3N・m
    • Force applied to one belt: F = (40.3 x 2 / 0.098) / 2 = 408N
      408N < 4320N Thus, no problem.
  • Servomotor
    • Motor rotational speed: 0 - 2000 (rpm)
    • Internal reduction ratio (ia): 1 / 9
    • External reduction ratio (ib): 40 (Ø80)/49 (Ø98)
    • Rotary pitch circle dia. (Dp): 80mm
    • Transportation speed: (Ns) x (Dp) x π x (ia) x (ib) x 1 / 60
      = 600 x 80 x π x (1 / 9) x (40 / 49) x 1 / 60 = 228mm/sec
      (Calculated by assuming applied rotational speed (Ns) of 600rpm)

Other Design Consideration

  • For stable and synchronous transmission L-type timing belt is selected.

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 Linear Guides - Extra Super Heavy Load SE2RZ36-1120 2
2 Deep Groove Ball Bearings B6205ZZ 8
3 Mecha Locks MLHS35 1
4 Parallel Keys KESS8-30 5
5 Adjusting Bolts AJKTN10-50 3
6 Socket Head Cap Screws-with Washer SCBS8-25 16
7 Set Screws Flat Type MSSFS6-6 5
8 Socket Head Cap Screws-with Washer SCBS5-20 8
9 Socket Head Cap Screws-with Washer SCBS8-30 6
10 Blocks For Adjusting Bolts AJSCM10-40 2
11 Blocks For Adjusting Bolts AJSBM10-70 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).
  • You will find information on price and shipping days, in the Online Quote and 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.
    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).
    5. Policy of Third Parties
    You may be required to separately agree to third party's policies if you use third party software to create or browse the Data or use a third party’s CAD data. In this case, the Company does not assume any responsibility for defects of such CAD data or the software of the third party or violation of their rights. Understand them before use.

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    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.

    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.

    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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