THK’s LM Guide SR/SR T Series represents a full ball type radial linear motion system engineered for demanding industrial applications requiring high rigidity, precision, and longevity. This series utilizes a unique radial load-bearing design where the load-carrying ball grooves are precisely ground into both the rail and the slider in a Gothic arch configuration. This geometry ensures optimal contact between the balls and the raceways, distributing loads evenly and providing exceptional stability. The full ball complement design maximizes the number of recirculating balls within the system, significantly increasing load capacity and stiffness compared to standard designs. The SR T variant incorporates a built-in seal plate with specialized contact seals that effectively exclude contaminants like dust, chips, and moisture, while also retaining grease for extended lubrication intervals, making it particularly suited for harsh environments.

Key technical features of the SR/SR T SERIES include its four-row, two-arc groove construction, which provides equal load capacity in all radial directions—radial, reverse radial, and lateral. This balanced design allows the guide to handle complex combined loads and overturning moments with minimal deformation. The high-rigidity slider body, combined with the large number of load-carrying balls, results in a very high static and dynamic load rating. Precision grinding of all critical surfaces ensures smooth, low-friction motion with high positional accuracy and excellent repeatability. The recirculation system is designed for smooth ball flow, minimizing vibration and noise during operation, even at high speeds.

The performance advantages are substantial. The high rigidity directly translates to improved machining accuracy in equipment by minimizing deflection under load, which is critical for maintaining tight tolerances. The increased load capacity allows for the downsizing of components or enables machinery to handle heavier workloads without compromising service life. Its low friction characteristics contribute to higher efficiency, requiring less drive force and reducing energy consumption. The robust construction and effective sealing in the SR T model lead to dramatically extended maintenance cycles and superior reliability, reducing total cost of ownership over the system’s lifespan.

Typical applications for the SR/SR T LM Guide are found across a wide spectrum of precision industries. In industrial machinery, they are indispensable in high-speed machining centers, CNC lathes, grinding machines, and electric discharge machines (EDMs) where they provide the stable and precise linear motion for tool posts, slides, and tables. Within automotive manufacturing systems, these guides are employed in robotic welding arms, precision assembly robots, transfer lines, and automated inspection equipment. In the realm of precision equipment, they facilitate accurate motion in semiconductor manufacturing apparatus like steppers and bonders, as well as in precision measuring instruments, optical positioning systems, and various automated laboratory equipment where smooth, vibration-free, and highly reliable linear guidance is a fundamental requirement.