LM Guide (Linear Motion Guide / Slide Guide) - THKThe LM Guide (Linear Motion Guide) is our main product, incorporating a part with a linear rolling motion into practical usage for the first time in the THK Standard Linear Guides | MISUMIA standard type of LM guide with ball retainer. Incurs load from four directions which allows it to be used in any position.* When ordering matched rail types, THK Linear Guide Systems | Linear Motion Control THK linear guide systems are unique motion control systems in which linear motion is supported by rolling contact elements. These linear motion guides (also Linear Motion Guides - THKTHK offers its main product, the Linear Guide (Blocks and Rails). It uses linear rolling motion to ensure high-precision, rigidity, and speed.