Ultra-high Rigidity Model SRG

The THK LM Guide SRG G Series represents a significant advancement in linear motion technology, featuring a full roller type design engineered for ultra-high rigidity and exceptional load capacity. This guide utilizes cylindrical rollers in both the rail and block, which are precision-ground to optimize contact with the raceways. This configuration ensures a robust, stable bearing arrangement capable of withstanding heavy loads and moments with minimal elastic deformation. The rollers are meticulously arranged in a staggered pattern to provide continuous, smooth contact along the entire travel path, effectively distributing stress and enhancing the system’s overall durability and service life.

Key technical features of the SRG G model include its optimized roller end design and specialized crowning, which mitigate edge loading and stress concentration at the roller ends. This design refinement significantly reduces friction and wear, contributing to consistent performance over extended operational periods. The guide is constructed from high-grade steel, subjected to rigorous heat treatment processes to achieve superior surface hardness and core toughness, ensuring resistance to indentation and fatigue under demanding conditions. Additionally, the SRG G incorporates an advanced sealing system comprising multiple seals and scrapers that effectively exclude contaminants such as dust, chips, and moisture, while retaining lubrication within the rolling elements. This results in maintained accuracy and prolonged maintenance intervals, even in harsh environments.

Performance advantages are evident in its ability to deliver high positional accuracy and repeatability, critical for applications requiring precise linear movement. The ultra-high rigidity minimizes deflection under load, enabling higher feed rates and improved machining efficiency without sacrificing precision. Its high-speed capability is supported by reduced vibration and noise levels, contributing to smoother operation and enhanced workpiece quality. The SRG G’s design also allows for easy installation and adjustment, with options for pre-load selection to match specific application requirements, from light pre-load for high-speed applications to heavy pre-load for high rigidity needs.

Typical applications span various high-demand sectors, including industrial machinery such as CNC machining centers, where it provides stable support for spindle heads and tool changers under heavy cutting forces. In automotive manufacturing systems, it is employed in robotic welding arms, transfer lines, and precision assembly equipment that require robust, reliable motion under continuous operation. Within precision equipment, the SRG G finds use in semiconductor manufacturing apparatus, optical measuring instruments, and medical devices where ultra-high rigidity and minimal vibration are paramount for achieving micron-level accuracy and repeatability. Its versatility and reliability make it an ideal choice for enhancing productivity and precision in advanced automation and manufacturing processes.

MORE +
CLOSE +
THK's LM Guide SRG, SRG-G, and SRG-GSLV SERIES represent a significant advancement in linear motion technology, engineered specifically for applications demanding ultra-high rigidity and precision under heavy loads and moment stresses. These full roller-type guides utilize cylindrical rollers in place of traditional balls, offering a robust solution for industrial environments where deflection, vibration, or positional inaccuracy cannot be tolerated. The design incorporates a unique gothic arch groove profile for the rolling elements, which maximizes contact area and distributes load more effectively than standard circular arcs. This geometry, combined with THK's precision grinding and heat treatment processes, ensures exceptional durability, smooth motion, and long service life even in the most demanding conditions. Key technical features of these series include their enhanced load capacity and rigidity. The full roller construction allows for higher load ratings—both dynamic and static—compared to ball-based guides of similar size. The SRG-G and SRG-GSLV models further improve upon this with optimized preload adjustments and sealing systems that protect against contaminants like chips, dust, and moisture. The rollers are precisely aligned and retained within the carriage, preventing skewing and ensuring consistent performance across the entire stroke length. Additionally, these guides are designed for easy installation and maintenance, with options for lubrication systems that extend relubrication intervals and reduce downtime. Performance advantages are most evident in their ability to maintain accuracy under extreme operational stresses. The ultra-high rigidity minimizes elastic deformation during high-speed or heavy-load movements, which is critical for maintaining positional repeatability and reducing settling times. This results in improved machining accuracy, higher throughput, and enhanced product quality in precision applications. The low friction coefficient of the roller system also contributes to higher efficiency, requiring less drive force and reducing energy consumption. Furthermore, the robust construction dampens vibrations and absorbs impact loads, protecting both the guide and the broader machinery from premature wear or failure. Typical applications span a wide range of industries where reliability and precision are paramount. In industrial machinery, these guides are integral to high-precision machining centers, grinding machines, and heavy-duty transfer lines, where they support axes subjected to significant cutting forces or rapid positioning. Within automotive manufacturing, they are employed in robotic welding arms, assembly robots, and press feed systems that require repeatable motion under variable loads. For precision equipment, the SRG series is found in semiconductor manufacturing apparatus, optical alignment systems, and coordinate measuring machines (CMMs), where nanometer-level stability is essential. Their resilience also makes them suitable for harsh environments, such as in steel processing equipment or aerospace component handling, where exposure to heat, debris, or corrosive agents is common. By delivering unmatched rigidity and load capacity, THK's full roller-type LM Guides enable machinery designers to push the boundaries of speed, accuracy, and reliability in modern automation and precision engineering.
View
THK's LM Guide SRG, SRG-G, and SRG-GLV Series represent a significant advancement in linear motion technology through their full roller-type design, engineered specifically to deliver ultra-high rigidity and exceptional load capacity. Unlike conventional ball-based linear guides, these models utilize cylindrical rollers as the rolling elements within the guide block, which contact the raceway with a line profile rather than points. This fundamental design choice drastically increases the contact area between the rollers and the raceway tracks, resulting in a dramatic enhancement of rigidity and a substantial boost in load-bearing capabilities. The series is meticulously designed to withstand heavy loads and moment forces, making it an ideal solution for applications where precision, stability, and durability are non-negotiable under the most demanding operating conditions. The technical features of the SRG Series are defined by this core roller-based architecture. The incorporation of a full complement of rollers eliminates the need for a retainer, maximizing the number of load-bearing elements and further amplifying rigidity and load ratings. The SRG-G model often includes a sealed design with integrated wipers to effectively exclude contaminants like dust and chips, while the SRG-GLV variant may feature a low-profile configuration for applications with stringent height restrictions. All models are characterized by their high rigidity, which is several times greater than equivalent ball-type guides, and their ability to maintain positional accuracy and smooth motion even when subjected to heavy cutting forces, vibration, or shock loads. The precision-ground raceways ensure consistent, low-friction travel and contribute to a long operational life with minimal maintenance requirements. Performance advantages are immediately evident in operational settings. The ultra-high rigidity directly translates to reduced elastic deformation during operation, which is critical for maintaining machining accuracy and surface finish quality in equipment like machine tools. This rigidity also suppresses vibration and chatter, leading to quieter operation and enhanced part quality. The high load capacity allows for the use of fewer guides or smaller-sized units to support a given load, potentially simplifying machine design and reducing the overall footprint. Furthermore, the roller design typically offers a longer calculated service life compared to ball guides under equivalent load conditions, providing greater long-term reliability and reducing total cost of ownership. Typical applications for the THK SRG Series are found wherever heavy loads and high rigidity are paramount. In industrial machinery, they are indispensable in the construction of heavy-duty machining centers, milling machines, boring machines, and grinding equipment, where they provide the stable foundation for tool heads and worktables. Within the automotive manufacturing sector, these guides are deployed in high-precision robotic welding arms, heavy-duty transfer lines, and stamping press feeders, where they endure constant, high-moment loads. In the realm of precision equipment, the SRG Series is utilized in semiconductor manufacturing apparatus, precision inspection machines, and electronic component assembly systems that demand absolute stability and minimal deflection to achieve micron-level accuracies. This makes the SRG, SRG-G, and SRG-GLV Series a cornerstone technology for engineers designing robust, high-performance automation and precision motion systems.
View
THK's LM Guide SRG, SRG-G, and SRG-GV Series represent a significant advancement in linear motion technology, specifically engineered as full roller type guides to deliver ultra-high rigidity and exceptional load capacity. These systems utilize cylindrical rollers in place of traditional ball bearings, arranged in a full-complement configuration that maximizes the number of rolling elements in contact with the raceway. This design fundamentally enhances stiffness and distributes loads more uniformly, making these guides ideally suited for applications demanding extreme precision under heavy loads and high moments. The technical features of the SRG Series are defined by their robust construction and innovative roller management. The core component is the LM rail and block, which incorporates a retainer to prevent roller-to-roller contact, ensuring smooth, low-noise operation and extended service life by minimizing wear and friction. The SRG-G and SRG-GV models further refine this concept. The SRG-G variant is a general-purpose ultra-high rigidity model, while the SRG-GV integrates a grease reservoir system within the LM block. This built-in reservoir automatically supplies lubricant to the rolling contact surfaces, significantly extending lubrication intervals, reducing maintenance downtime, and enhancing operational reliability in environments where regular re-lubrication is challenging. Performance advantages are substantial and directly address the limitations of conventional linear guides. The ultra-high rigidity translates into minimal elastic deformation under load, which is critical for maintaining positional accuracy and repeatability. This results in dramatically improved machining quality, reduced vibration, and suppressed chatter in high-load operations. The full roller design provides a higher load rating—particularly for moment loads—compared to similarly sized ball-based guides. This allows for the design of more compact machinery without sacrificing performance. Furthermore, the optimized roller recirculation system ensures consistent, smooth motion at high speeds, contributing to higher throughput and productivity. Typical applications for the SRG, SRG-G, and SRG-GV Series are found in heavy-duty industrial sectors where precision and reliability are non-negotiable. In industrial machinery, they are indispensable in high-precision machining centers, heavy-duty milling machines, and grinding equipment, where they provide the stable foundation required for fine surface finishes and tight tolerances. Within automotive manufacturing systems, these guides are deployed in high-load robotic welding arms, heavy-part transfer systems, and precision assembly lines. In the realm of precision equipment, they form the backbone of semiconductor manufacturing apparatus, inspection and measurement machines, and optical lens grinding equipment, where their rigidity ensures the sub-micron level accuracy essential for production. By offering a combination of unparalleled stiffness, high load capacity, and reduced maintenance needs, the THK SRG Series provides a robust and reliable linear motion solution for the most demanding industrial applications.
View
THK's LM Guide SRG, SRG-X, and GSR-X Series represent a significant advancement in linear motion technology through their full roller-type design, delivering ultra-high rigidity for the most demanding industrial applications. These guides employ cylindrical rollers arranged in a full complement configuration within both the rail and block, maximizing contact area and load distribution. The SRG Series features a compact, high-rigidity structure, while the SRG-X Series incorporates a specially designed endplate that increases allowable moment loads by approximately 20% compared to standard models. The GSR-X Series further enhances this with a sealed, lubricated unit design, integrating a highly efficient seal and a grease reservoir that significantly extends maintenance intervals. The core technical feature of these series is the achievement of exceptional rigidity. This is accomplished through a large contact area between the rollers and raceways, a high number of load-bearing rollers, and a rigid block and rail structure. This design directly translates into minimal elastic deformation under load, ensuring unparalleled positional accuracy and stability. Performance advantages are substantial, including a high load capacity—supporting moments in all directions (pitch, yaw, and roll)—and exceptional durability even under heavy loads, shock, and vibration. The low coefficient of friction inherent in the roller design contributes to smooth, precise motion with minimal stick-slip, enabling high-speed operation and excellent positioning repeatability. For the GSR-X Series, the integrated sealing system and pre-loaded lubrication provide high dust and debris resistance (IP65 equivalent), making them ideal for harsh environments and reducing total cost of ownership by minimizing maintenance downtime and lubricant consumption. These performance characteristics make the SRG, SRG-X, and GSR-X Series indispensable in a wide range of high-precision and heavy-duty applications. In industrial machinery, they are critical components in high-speed machining centers, where their rigidity prevents chatter and ensures superior surface finish on workpieces. They are equally vital in high-precision grinding machines, transfer lines, and injection molding machines that require unwavering accuracy under significant forces. Within the automotive manufacturing sector, these guides provide the robust and reliable linear motion needed for heavy-duty welding robots, precision assembly systems, and large-scale material handling equipment. In the realm of precision equipment, their stability and accuracy are leveraged in semiconductor manufacturing apparatus, such as steppers and wafer inspection systems, where even micron-level deflections are unacceptable. The sealed GSR-X model, in particular, finds extensive use in food and packaging machinery, medical devices, and cleanroom environments where contamination control and long-term, maintenance-free operation are paramount.
View
THK's SRG, G-SRG, and XGA-SERIES LM Guides represent a significant advancement in linear motion technology through their full roller-type design, delivering ultra-high rigidity essential for demanding industrial applications. These guides utilize cylindrical rollers instead of traditional balls, arranged in a full-complement configuration between the rail and the block. This design maximizes the contact area and load-bearing capacity, resulting in exceptional stiffness and minimal elastic deformation under heavy loads. The SRG series is engineered for general high-rigidity needs, the G-SRG incorporates a sealed design for enhanced contamination resistance, and the XGA-SERIES offers optimized configurations for specific precision and load requirements. Each model features a robust structure with precision-ground raceways and rollers, ensuring smooth, consistent motion and long-term accuracy. Key technical features include an ultra-high rigidity rating, achieved through the full roller arrangement that distributes loads evenly across a larger surface area. This design significantly increases the dynamic and static load ratings compared to standard ball-based LM guides. The guides exhibit minimal deflection and vibration, even under substantial moment loads or uneven force distributions. For the G-SRG and XGA-SERIES, integrated seals and wipers protect the roller pathways from dust, chips, and moisture, extending service life in harsh environments. The preload adjustment mechanisms allow for precise control over clearance, eliminating play and enhancing positional accuracy. Low-noise operation and reduced friction coefficients contribute to smoother motion profiles and higher efficiency, while the materials and heat treatment processes ensure exceptional wear resistance and durability. Performance advantages are most evident in applications requiring extreme precision and stability under heavy loads. The ultra-high rigidity minimizes deflection, enabling higher machining accuracy and surface finishes in CNC equipment, such as machining centers, milling machines, and grinders. In automotive manufacturing, these guides support high-speed robotic arms, transfer lines, and pressing machines where repeatability and resistance to shock loads are critical. For precision equipment, including semiconductor manufacturing tools, optical alignment systems, and coordinate measuring machines, the SRG series provides the stiffness needed for micron-level accuracy. The enhanced sealing in the G-SRG model makes it suitable for environments with significant particulate contamination, such as woodworking or metal stamping facilities, where reliability and reduced maintenance intervals are paramount. By combining high load capacity, rigidity, and environmental resilience, THK's full roller-type LM guides enable faster production speeds, improved product quality, and reduced downtime across these diverse industrial sectors.
View
The THK LM Guide SRG G and SRG GSLR SERIES represent a significant advancement in linear motion technology, engineered specifically for applications demanding ultra-high rigidity and precision under extreme load conditions. These full roller-type LM Guides utilize cylindrical rollers in place of traditional balls, delivering superior load capacity, stiffness, and positional accuracy. The design incorporates a unique gothic arch groove profile for the rolling elements, which ensures optimal contact stress distribution and minimizes deformation under heavy loads. This configuration allows the SRG series to handle moment loads and complex forces with exceptional stability, making them ideal for high-precision, high-duty industrial environments. Key technical features include an enhanced sealing system that effectively excludes contaminants like chips, dust, and moisture, thereby extending service life and maintaining smooth operation in harsh conditions. The series offers preload adjustment options, enabling fine-tuning to eliminate play and enhance rigidity according to specific application requirements. Additionally, the SRG GSLR variants are designed with a self-aligning capability, compensating for mounting surface inaccuracies and simplifying installation without compromising performance. These guides are constructed from high-grade steel, heat-treated to achieve superior wear resistance and durability, ensuring long-term reliability even in continuous, high-speed operations. Performance advantages of the SRG G and SRG GSLR SERIES are substantial, providing up to twice the rigidity and load capacity compared to standard ball-type LM Guides. This results in reduced deflection, improved positioning accuracy, and minimal maintenance needs, leading to increased machine uptime and productivity. The low friction coefficient of the roller design contributes to smooth, vibration-free motion, which is critical for applications requiring high surface finish quality or precise component placement. Energy efficiency is also enhanced due to the optimized rolling mechanism, reducing power consumption and operational costs over the system's lifecycle. Typical applications span across demanding sectors such as industrial machinery, where these guides are employed in heavy-duty CNC machining centers, grinding machines, and injection molding equipment to ensure precise tool positioning and withstand intense cutting forces. In automotive systems, they are integral to robotic welding arms, assembly line transporters, and precision testing apparatus, where reliability under repetitive stress is paramount. For precision equipment, the SRG series finds use in semiconductor manufacturing devices, optical alignment systems, and coordinate measuring machines, where nanometer-level accuracy and stability are non-negotiable. By integrating the THK SRG G and SRG GSLR SERIES, industries can achieve enhanced performance, reduced downtime, and greater operational efficiency in their most challenging linear motion tasks.
View
THK's LM Guide SRG, G, GLR, and SERIES represent a significant advancement in linear motion technology, specifically engineered as full roller type guides that deliver ultra-high rigidity for the most demanding industrial applications. These systems are meticulously designed to replace traditional ball-based linear motion guides in scenarios where exceptional stiffness, heavy load capacity, and minimal elastic deformation are paramount. The core innovation lies in the use of cylindrical rollers instead of balls, arranged in a full complement configuration within the rolling element circuit. This design maximizes the contact area between the rollers and the raceways, drastically increasing rigidity and load-bearing capabilities while maintaining smooth, precise linear motion. Key technical features of these series include their optimized roller end geometry and a specialized retainer system that ensures stable roller behavior even under high-speed operation or sudden directional changes. The SRG and G models are particularly noted for their four-way equal load capacity, allowing them to handle moment loads and complex force vectors from any direction with consistent performance. The GLR series often incorporates a sealed design with integrated wipers and grease reservoirs, enhancing contamination resistance and extending maintenance intervals in harsh environments. All models are manufactured from high-grade steel, subjected to rigorous heat treatment processes to achieve superior surface hardness and durability, which directly translates to prolonged service life and reliability. Performance advantages are substantial and measurable. The ultra-high rigidity minimizes deflection under load, which is critical for maintaining precision in machining and positioning tasks. This results in improved machining accuracy, better surface finishes on workpieces, and higher repeatability in automated processes. The full roller design also contributes to a higher load rating compared to similarly sized ball-based guides, enabling the use of more compact linear motion systems without sacrificing performance. Additionally, the optimized roller circulation reduces vibration and noise levels, leading to smoother operation and a quieter working environment. Typical applications span a wide range of high-performance industries. In industrial machinery, these guides are indispensable in heavy-duty CNC machining centers, grinding machines, and milling equipment where cutting forces are extreme and precision is non-negotiable. The automotive sector utilizes them in robotic welding arms, assembly line transporters, and precision testing rigs that require unwavering stability and accuracy. Within precision equipment, they are found in semiconductor manufacturing apparatus, optical alignment systems, and coordinate measuring machines (CMMs), where even micron-level deflections can compromise product quality. Their robustness also makes them suitable for injection molding machines, press feeds, and other applications involving significant shock loads or continuous heavy-duty cycles. By integrating THK's full roller type LM Guides, engineers can achieve new levels of performance, reliability, and precision in their mechanical designs, directly addressing the challenges of modern, high-demand automation and manufacturing environments.
View
The THK LM Guide SRG, SRG-G, and SRG-GR Series represent a significant advancement in linear motion technology, engineered specifically for applications demanding ultra-high rigidity and precision under extreme load conditions. As a full roller type LM guide, this series utilizes cylindrical rollers in place of traditional ball bearings, resulting in a substantial increase in load capacity, stiffness, and positional accuracy. The design is characterized by its robust construction, featuring a precisely machined rail and block assembly that ensures smooth, virtually frictionless motion even when subjected to heavy moment loads and intense vibration. Key technical features of the SRG Series include its optimized roller contact geometry, which distributes loads evenly across a larger surface area, dramatically enhancing rigidity and reducing elastic deformation. The incorporation of a high-capacity, multi-row roller arrangement allows the guide to support loads several times greater than equivalent ball-based systems. A specialized sealing system is integrated to prevent contamination from dust, chips, and other particulates, ensuring long-term reliability and minimal maintenance in harsh operating environments. The series is available in various accuracy grades and preload levels, enabling precise tuning for specific application requirements, from standard-duty operations to high-precision positioning tasks. Performance advantages are most evident in its exceptional rigidity, which minimizes deflection under load and ensures outstanding positional stability and repeatability. This results in improved machining accuracy, higher quality surface finishes, and the ability to maintain precision at high speeds and accelerations. The low friction coefficient of the roller system contributes to reduced heat generation and lower driving force requirements, enhancing energy efficiency and extending the service life of both the guide and associated drive components. Its durability and resistance to wear make it exceptionally reliable for continuous, high-cycle operations. Typical applications for the SRG Series are found in industries where precision and robustness are paramount. In industrial machinery, it is extensively used in heavy-duty machining centers, grinding machines, and large-scale milling equipment that require unwavering stability during aggressive cutting operations. Within automotive manufacturing systems, these guides are employed in robotic welding arms, precision assembly lines, and high-load transfer systems that must endure constant, high-impact forces. In the realm of precision equipment, the SRG Series is ideal for semiconductor manufacturing apparatus, precision measuring instruments, and optical alignment systems where nanometer-level accuracy and minimal vibration are critical to performance. Its ability to perform reliably under severe conditions makes it a cornerstone component for advancing automation and precision in modern industrial applications.
View
THK's LM Guide SRG-G/SRG-GSLC Series represents a significant advancement in linear motion technology through its full roller type design, delivering ultra-high rigidity for the most demanding industrial applications. This series employs cylindrical rollers arranged in a full complement configuration within the raceway, maximizing contact area and load distribution. The SRG-G models feature a standard design, while the SRG-GSLC variants incorporate a sealed and lubricated unit, pre-packed with grease and equipped with specialized seals to prevent contamination and extend maintenance intervals. Both are engineered to withstand extreme loads, shock, and vibration while maintaining precise linear guidance. Key technical features include a rigid steel construction with precision-ground raceways, ensuring smooth roller movement and minimal deformation under stress. The full roller arrangement eliminates ball-based limitations, providing higher load capacities—up to twice that of equivalent ball guide models—and enhanced moment rigidity. The SRG-GSLC's integrated seals effectively block dust, chips, and other particulates, while the pre-lubrication system reduces friction and wear. Additionally, the series offers easy installation with reference surfaces for alignment and standardized mounting hole patterns, simplifying integration into machinery. Performance advantages are substantial, starting with exceptional accuracy and repeatability due to reduced elastic deformation. The ultra-high rigidity minimizes deflection during operation, critical for applications requiring tight tolerances. Low noise and vibration levels contribute to smoother motion, while the high-speed capability—supported by the roller design—ensures efficient cycle times. The SRG-GSLC's maintenance-friendly design lowers total cost of ownership by reducing lubrication frequency and preventing premature failure from environmental contaminants. Typical applications span industries where reliability under heavy loads and precision are non-negotiable. In industrial machinery, the SRG-G/SRG-GSLC Series is ideal for heavy-duty CNC machining centers, transfer lines, and press feeds, where it supports high thrust forces and maintains alignment in multi-axis systems. Automotive manufacturing leverages these guides in robotic welding arms, assembly robots, and automated material handling equipment, enduring continuous operation and shock loads. Precision equipment applications include semiconductor manufacturing devices, optical positioning stages, and measuring instruments, where minimal vibration and sub-micron accuracy are essential. The series' robustness also suits injection molding machines, packaging machinery, and aerospace testing rigs, demonstrating versatility across sectors that demand durability, precision, and long service life.
View
THK's LM Guide SRG, SRG-G, and SRG-GLC Series represent a significant advancement in linear motion technology through their full roller-type design, engineered specifically to deliver ultra-high rigidity and exceptional load capacity in demanding industrial environments. Unlike traditional ball-based linear guides, these systems utilize cylindrical rollers as the rolling elements within the guide block, substantially increasing contact area with the raceway. This fundamental design choice translates directly into superior stiffness, minimal elastic deformation under load, and enhanced moment rigidity, making them ideally suited for applications where precision, stability, and heavy-load performance are non-negotiable. The technical features of these series are meticulously crafted for peak performance. The full roller configuration ensures a higher load rating—both dynamic and static—compared to equivalent ball-type guides. This results in a dramatically longer service life and improved durability, even under harsh conditions involving shock loads and vibrations. The SRG-G model, for instance, incorporates a specially designed seal to provide superior resistance against contaminants like dust, chips, and moisture, which is critical for maintaining precision in unclean environments. The SRG-GLC variant offers a compact, low-profile design without compromising on load capacity, providing an optimal solution for machinery with space constraints. All models feature precision-ground raceways that guarantee smooth, consistent rolling motion with exceptionally low friction, contributing to high positional accuracy and repeatability. Performance advantages are immediately evident in operational settings. The ultra-high rigidity minimizes deflection and vibration during high-speed movement and heavy cutting forces, which is paramount for achieving superior surface finishes in machining and maintaining geometric accuracy. This stability allows for higher feed rates and accelerated production cycles without sacrificing precision. The robust construction also leads to reduced maintenance intervals and lower total cost of ownership, as the components are built to withstand continuous, rigorous use. Typical applications for the THK SRG Series are found wherever heavy loads and precision must coexist. In industrial machinery, they are indispensable in heavy-duty machining centers, high-precision grinding machines, and large-scale transfer lines. The automotive industry leverages their robustness in automated welding systems, stamping press feeders, and precision assembly robots that handle heavy components. Within the realm of precision equipment, these guides are critical in semiconductor manufacturing apparatus, precision measuring instruments, and optical alignment systems where even micron-level deflections are unacceptable. By providing a foundation of unwavering stability and strength, the THK SRG Full Roller Type LM Guide Series enables machinery designers to push the boundaries of speed, load, and precision.
View
THK's LM Guide SRG, SRG-G, and SRG-GC Series represent a significant advancement in linear motion technology, engineered specifically for applications demanding ultra-high rigidity and exceptional load capacity. These full roller-type guides utilize cylindrical rollers instead of traditional balls, distributing loads across a larger contact area to minimize deformation under heavy forces. The SRG Series features a standard design with four rows of rollers arranged in a face-to-face configuration, while the SRG-G model incorporates a Gothic arch groove geometry that enhances moment rigidity and provides greater stability. The SRG-GC variant builds on this with a compact, low-profile structure, ideal for space-constrained installations without sacrificing performance. Key technical features include a patented recirculation system that ensures smooth, uninterrupted roller movement, reducing vibration and noise even at high speeds. The rollers are precision-ground to sub-micron tolerances, guaranteeing consistent contact and minimal friction. Preload adjustments can be finely tuned to eliminate backlash, maintaining accuracy under varying load conditions. Corrosion-resistant materials and optional seals protect against contaminants like dust, chips, and moisture, extending service life in harsh environments. Additionally, the series supports lubrication intervals that are up to 50% longer than conventional guides, lowering maintenance requirements and total cost of ownership. Performance advantages are evident in their ability to handle extreme loads—up to twice the capacity of equivalent ball-based guides—while maintaining positioning accuracy within microns. The ultra-high rigidity minimizes deflection during operation, critical for applications involving heavy cutting forces or sudden directional changes. This results in improved surface finish in machining, reduced cycle times, and enhanced repeatability. The low friction coefficient contributes to energy efficiency, as lower drive forces are needed to achieve motion, and the robust design ensures minimal wear over time, even in continuous duty cycles. Typical applications span industries where precision and durability are paramount. In industrial machinery, these guides are integral to CNC machining centers, grinding machines, and heavy-duty milling equipment, where they support high-speed axes and withstand intense vibrations. Automotive manufacturing relies on them for robotic welding arms, press feeds, and assembly line transporters that require reliable motion under repetitive stress. In precision equipment, they enable accurate positioning in semiconductor fabrication tools, optical measuring instruments, and medical imaging devices, where stability and minimal thermal expansion are crucial. By combining rugged construction with refined engineering, the SRG Series delivers a solution for the most demanding linear motion challenges, ensuring longevity and precision across diverse operational landscapes.
View