CNC linear guides Linear Guide Rail Block

THK linear guide is the core component of FANUC machine tools, which achieves high-precision linear motion through ball circulation and is an indispensable “skeleton” of CNC machine tools.

Structure and Principle
Core components: Composed of tracks, sliders, and balls, the balls circulate and roll within the tracks to achieve low friction and high-precision motion.
Technical advantages: Compared to traditional quenched rails, THK rails have stronger rigidity, simpler assembly, and better wear resistance.
Selection and Application
High rigidity series: such as SNR25R, SVS30R, etc., adopt a circular arc deep groove design, with a 30% increase in load-bearing capacity, suitable for heavy-duty cutting.
Dustproof design: equipped with multiple layers of scraper blades and sealing gaskets, suitable for metal chip environments, with a maintenance cycle extended by 40%.
market position
As an industry leader, THK’s products are widely used in fields such as FANUC machine tools and semiconductor equipment, with a high-end market share of over 60%.