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THK Linear Motion Rail Systems

With the continuous expansion of China's power industry, data communication industry, urban rail transit industry, automobile industry and shipbuilding industry, the demand for linear motion rail systems will also grow rapidly. In the future, the linear guide rail industry has great potential for development.

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Product Details

Definition editing of THK linear motion rail systems


Linear guides, also known as line rails, slide rails, linear guides, and linear slide rails, are used for linear 

reciprocating applications and can withstand a certain amount of torque to achieve high-precision linear 

motion under high load conditions. Linear guides are called in the mainland. Taiwan is generally called 

linear guides and linear slides.


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Category editing of THK linear motion rail systems


It is divided into square ball linear guide, double shaft core roller linear guide, single axis core linear guide.


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Function editing of THK linear motion rail systems


The function of the linear guide motion is to support and guide the moving parts to make a reciprocating 

linear motion in a given direction. Depending on the nature of the friction, linear motion guides can be 

classified into sliding friction guides, rolling friction guides, elastic friction guides, and fluid friction guides. 

Linear bearings are mainly used in automation machinery, such as machine tools imported from Germany, 

bending machines, laser welding machines, etc. Of course, linear bearings and linear shafts are used 

together. Linear guides are mainly used on mechanical structures with high precision requirements. There 

is no intermediate medium between the moving parts and fixed elements of the linear guides, and rolling 

steel balls are used.


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Application field editing of THK linear motion rail systems


  1. Linear guides are mainly used in automation machinery, such as machine tools imported from Germany, bending machines, laser welding machines, etc. Of course, linear guides and linear axes are used together.

  2. The linear guide rail is mainly used on the mechanical structure with higher precision requirements.

    The intermediate medium is not used between the moving component and the fixed component of

    the linear guide rail, and the rolling steel ball is used. Because the rolling steel ball is suitable for

    high-speed movement, small friction coefficient and high sensitivity, it can meet the working

    requirements of moving parts, such as tool holders and carriages of machine tools. If the force acting

    on the steel ball is too large, the steel ball is subjected to the preloading time for too long, resulting

    in an increase in the kinematic resistance of the bracket.



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