THK’s LM Guide SRN-G/SRN-GC/SER Series represents a significant advancement in linear motion technology through its full roller type design, delivering ultra-high rigidity and an exceptionally low center of gravity. This series is engineered to meet the demanding requirements of modern industrial applications where precision, stability, and durability are non-negotiable. By incorporating a full complement of cylindrical rollers in the guide mechanism, these LM Guides achieve smooth, high-precision linear motion with minimal friction, making them ideal for heavy-load and high-moment applications.
Key technical features of the SRN-G/SRN-GC/SER Series include its robust construction, which ensures superior rigidity and resistance to deformation under load. The low center of gravity design enhances stability, reducing vibration and improving positional accuracy during operation. The full roller configuration allows for higher load capacities and longer service life compared to traditional ball-based guides, as rollers distribute loads more evenly and reduce stress concentrations. Additionally, the series offers options for sealed and lubricated units (such as the SRN-GC model), which provide excellent contamination resistance and maintenance-free operation in harsh environments. Pre-loaded versions are available to eliminate backlash, ensuring repeatable precision in high-accuracy tasks.
Performance advantages of these LM Guides are evident in their ability to handle extreme loads while maintaining smooth motion and minimal deflection. The ultra-high rigidity translates to improved machining accuracy and surface finish in applications like CNC machining centers, where tool path precision is critical. The low center of gravity minimizes tipping moments, enhancing safety and reliability in automated systems. With low friction coefficients and optimized roller geometries, the series also contributes to energy efficiency by reducing power consumption and heat generation. This makes it suitable for high-speed operations without compromising on lifespan or performance consistency.
Typical applications span across various sectors, including industrial machinery, where these guides are used in heavy-duty milling machines, grinding equipment, and transfer lines to ensure precise workpiece positioning and tool movement. In automotive systems, they facilitate accurate assembly processes, such as in robotic welding arms or engine component handling, where rigidity and repeatability are essential for quality control. Precision equipment, such as semiconductor manufacturing tools and optical alignment devices, benefits from the series’ low vibration and high-accuracy capabilities, enabling micron-level positioning in cleanroom environments. Overall, the THK LM Guide SRN-G/SRN-GC/SER Series provides a reliable, high-performance solution for applications demanding robust linear motion with uncompromising rigidity and stability.
| Model No. | Outer dimensions | Basic load rating | |||
| Radial | |||||
| Height M |
Width W |
Length L |
Dynamic rating C |
Static rating C0 |
|
| mm | mm | mm | kN | kN | |
44 |
100 |
125 |
55.3 |
131 |
|
52 |
120 |
155 |
87.8 |
216 |
|
63 |
140 |
185 |
125 |
300 |
|
75 |
170 |
244.9 |
214 |
511 |
|