This is a helpful overview for people unfamiliar with linear guides (linear motion guides) and those who are considering making a selection or purchase.

What Is a Linear Guide (Linear Motion Guide)?

 

THK’s LM Guide Technology

 

 

Purchasing Guide

 

Design, Selection, and Technical FAQ

 

Mounting Methods and Maintenance

 

Mounting Methods

There are two main steps to mounting an LM Guide. ​

  • Mounting the LM rail
  • Mounting the LM block 

The most common configuration is a two-axis layout. There are several ways the second (subsidiary) axis can be set up. ​
  • Using a straightedge
  • Using the parallelism of the table
  • Having the subsidiary LM rail follow the master LM rail
  • Using a jig 

See the LM Guide General Catalog for information about LM Guide mounting methods. ​

 

Maintenance

Lubrication is crucial for the proper functioning of the LM Guide.

LM Guide lubrication method

 

The THK Technical Support Site features the following documents, which are intended to help extend the service life of the LM Guide.

Technical information: LM Guide inspection tips to extend the service life

Technical information: Signs an LM Guide needs replacement

* To access the Technical Support Site, you must create a free account or log in.

 

Sign up to download documents

 

Grease

The LM Guide’s performance can be maximized by using the right lubricant based on the application and purpose.

Lubricant can be split into the following general categories.

  • Grease lubricant
  • Oil lubricant

Each of these types of lubricant have their own special characteristics. ​ ​

THK original grease optimized for linear motion systems


You can download the SDS (Safety Data Sheet) for the grease used to lubricate a product from the Technical Support Site.

* To access the Technical Support Site, you must create a free account or log in.

 

Sign up to download documents

 

 

 

 

THK CO., LTD.

2-12-10 Shibaura, Minato-ku, Tokyo 108-8506

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