THK LM Guide Instruction Manual
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THK LM Guide Instruction Manual

Linear motion system
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THK Linear Motion System
LM Guide
Instruction Manual
No. 1030-T34667

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Summary of Contents for THK LM Guide

  • Page 1 THK Linear Motion System LM Guide Instruction Manual No. 1030-T34667...

  • Page 2: Table Of Contents

    Table of Contents Introduction Foreword ― ―――――――――――――――――――――――――――――― 1-1 About This Manual ― ―――――――――――――――――――――――――― 1-1 Scope of Use for This Product ―――――――――――――――――――――― 1-2 Product Support ― ――――――――――――――――――――――――――― 1-2 Product Information and THK Information ―――――――――――――――― 1-2 Precautions on Use Safety Related Warning Displays ― ―――――――――――――――――――― 2-1 Handling ――――――――――――――――――――――――――――――― 2-1 Precautions on Use ―――――――――――――――――――――――――― 2-2 Lubrication ―――――――――――――――――――――――――――――― 2-3 Storage ――――――――――――――――――――――――――――――― 2-3 Disposal ―――――――――――――――――――――――――――――――...

  • Page 3: Introduction

    The diagrams contained herein are representative examples and may vary from the actual product. z THK will not be liable for the effects resulting from the use of this manual for any reason whatsoever. z This manual also applies to special products, but content specified on the Delivery Specification Diagram takes priority.

  • Page 4: Scope Of Use For This Product

    Do not use this product for equipment or systems used in life-threatening situations. z Consult THK beforehand when considering using this product for special applications such as in passenger vehicles or in medical, aviation and space, nuclear power, or electrical power equipment or systems.

  • Page 5: Precautions On Use

    Tilting an LM block or LM rail may cause it to fall by its own weight. z Take care not to drop or strike the LM Guide. This could cause injury or damage the product. If the product receives an impact, it could impair the product's functions, even if the product Falling objects looks intact.

  • Page 6: Precautions On Use

    Inserting the LM block while tilted risks foreign material entering, internal parts being damaged, and rolling elements dropping off. z If the endplate is damaged due to an accident, etc., balls may fall out of the LM Guide or the Falling objects LM block may become detached from the LM rail and fall down.

  • Page 7: Lubrication

    LM block. Contact THK for details. Storage Store the LM Guide horizontally in its original packaging in an indoor location where it is not ex- posed to high or low temperatures or high humidity.

  • Page 8: Marking On The Master Rail And Combined Use

    Figure 3-1 Master and Subsidiary LM Guides (For Example, Model HSR-B) 3-2. Marking on the Reference Surface In the LM Guide, the reference surface of Reference the LM block is opposite the surface marked surface with the THK logo, and the reference surface...

  • Page 9: Use Of Jointed Rails

    Therefore, we recommend securely fastening the LM rail by pressing the joint section against the reference surface using a set screw or the like and keeping the L dimension as short as possible. (Figure 3-4) Contact THK for details. Joint match mark Joint match mark...

  • Page 10: Assembly

    4. Assembly 4. Assembly Mounting Procedure 4-1-1 Example of Mounting the LM Guide When Vibration or Impact Is Applied to the Machine and Therefore Rigidity and High Accuracy Are Required LM block set screw Table LM rail set screw Base...
  • Page 11 Figure 4-7. This method saves time in establishing the straightness of the LM rail and eliminates the need to machine secure dowel pins, thus drastically shortening the time required for installation. LM Guide...
  • Page 12 4. Assembly Assembly 4-1-2 Example of Mounting the LM Guide When the Master LM Rail Is Not Provided with Set Screws LM block set screw Table Base Master rail Subsidiary rail Figure 4-8 When the Master LM Rail Is Not Provided with Set Screws...
  • Page 13 (Figure 4-13) Figure 4-13 LM Guide...
  • Page 14 4. Assembly Assembly 4-1-3 Example of Mounting the LM Guide When the Master LM Rail Does Not Have a Reference Surface LM block set screw Table Base Master rail Subsidiary rail Figure 4-14 Mounting the Master LM Rail z Using a Temporary Reference Surface...

  • Page 15: Recommended Tightening Torque For Lm Rails

    Figure 4-17 Methods for Measuring Accuracy after Installation Recommended Tightening Torque for LM Rails On the high-precision LM rails of the LM Guide, the rails are tightened with bolts for the final grinding of the raceways and for the accuracy inspection. When mounting a high-precision LM rail onto a machine, we recommend using the corresponding tightening torque indicated in Table 4-1 or Table 4-2.

  • Page 16: Removing/Mounting Jig

    LM rail. Contact THK for details. If any of the rolling elements falls from the LM block, discontinue use and contact THK. Note that the removing/mounting jig is not included in the LM Guide package as standard. When desiring to use it, contact THK.

  • Page 17: Dimensional Tolerance Of The Mounting Surface

    Error Allowance in the Parallelism between Two Rails A mounting surface error of the LM Guide may affect the service life. See the general catalog for the error allowance of the mounting surface for each model number in general use.

  • Page 18: Lubrication

    6. Lubrication Lubrication It is necessary to use a good quality lubricant when using an LM Guide. Usage with no lubrication may increase wear on the rolling elements and shorten the service life. A lubricant has the following effects. Minimizes friction in moving elements to prevent seizure and reduce wear.
  • Page 19 Daphne Super Multi Oil (Idemitsu Kosan) Mobil DTE Oil Series (Exxon Mobil) Shell Tonna S3 M (Showa Shell Sekiyu) Raceway Oil or Turbine Oil ISOVG32 to 68 Mobil Vactra Numbered Series (Exxon Mobil) Mobil Vactra No. 2 SLC (Exxon Mobil) or equivalent LM Guide...

  • Page 20: Lubrication Method

    LM rail. This reduces abrasion of the dust prevention seal, and protects the seal. * When using the LM Guide in an environment where foreign materials can adhere easily to the LM rail, we recommend taking measures such as using a cover.
  • Page 21 Lubrication 6-2-3 Manual Greasing Generally, replenish grease periodically by feeding it through the grease nipple provided on the LM Guide, using a grease gun. (Figure 6-1) Figure 6-1 Greasing Using a Grease Gun 6-2-4 Forced Greasing/Lubrication Method With this method, a given amount of lubricant is forcibly fed at set intervals using an automatic pump.
  • Page 22 Appendix Revision History The instruction manual number is on the back cover. Publication Date Instruction Manual No. Revisions December 2017 No. 1030-T34667 First edition...
  • Page 23 Inquiries Website URL: https://www.thk.com/eng/ Technical support site URL: https://tech.thk.com/ No. 1030-T34667...

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