The THK FBL56H P14 Series represents a heavy-duty linear motion solution engineered for applications demanding exceptional load capacity and rigidity under challenging operational conditions. This double slide rail system incorporates two parallel FBL56H slide units mounted on a common base, creating a robust structure capable of withstanding substantial moments and complex loading scenarios. Each rail features a 56mm width with a P14 pitch for mounting hole spacing, optimized for secure fixation and precise alignment in heavy machinery frameworks. Technical features begin with the high-capacity ball circuit design, utilizing THK's patented Gothic arch geometry in the raceway profile. This configuration provides four-point contact for each ball, distributing loads evenly and minimizing elastic deformation under stress. The FBL56H incorporates large-diameter steel balls in increased numbers within its load-bearing tracks, significantly enhancing both static and dynamic load ratings compared to standard single rail alternatives. Sealing systems employ multiple labyrinth barriers and specialized grease retention mechanisms, effectively excluding contaminants while maintaining lubrication integrity in particulate-heavy environments. Preloaded ball assemblies eliminate internal clearance, delivering consistent positioning accuracy and vibration damping throughout the operational lifespan. Performance advantages manifest in several critical areas. The double rail configuration demonstrates remarkable moment resistance, withstanding overturning forces up to 40% greater than equivalent single rail arrangements. Stiffness measurements show deflection values reduced by approximately 60% under identical loading conditions, translating to improved machining accuracy and surface finishes in manufacturing applications. Smooth motion characteristics prevail even at maximum capacity, with friction coefficients remaining stable across the velocity spectrum from precise indexing to rapid traversal. Thermal stability maintains precision during continuous operation, with heat-dissipating elements integrated into the carriage design to minimize thermal growth effects on positioning accuracy. Industrial machinery applications prominently feature the FBL56H P14 in large-scale machining centers, where its heavy load capacity supports massive workpieces during high-speed milling operations. The system's vibration damping characteristics prove essential in precision grinding equipment, maintaining micron-level accuracy during aggressive material removal. Automotive manufacturing implementations include robotic welding stations handling vehicle frames and body panels, where the double rail configuration provides the necessary rigidity for consistent weld gun positioning. Press automation systems employ these slides for die changing mechanisms, leveraging the high moment resistance during unstable load conditions. Precision equipment deployments emerge in semiconductor manufacturing, where the slides facilitate wafer handling robots moving between process stations without particulate generation. Large-format coordinate measuring machines incorporate FBL56H systems for bridge movement, maintaining measurement integrity through minimal deflection under probe head forces. Medical device manufacturing utilizes these components in assembly automation, where the clean operation and positional repeatability meet stringent regulatory requirements for medical component production.

The THK Slide Rail Double Slide Heavy Load Model FBL56H P13 SERIES represents a pinnacle of engineering for applications demanding exceptional load capacity, rigidity, and precision in linear motion. This double slide rail system is specifically engineered to handle heavy loads and moments with unparalleled stability, making it an indispensable component for the most demanding industrial automation, heavy machinery, and precision equipment. The FBL56H P13 is characterized by its large 56mm rail width and a robust double slide block configuration, which distributes loads evenly across a wide surface area to prevent deformation and ensure smooth, accurate travel even under extreme conditions. Technically, the series incorporates THK's advanced Caged Ball technology within its slide blocks. This design cages the recirculating steel balls, virtually eliminating contact between them to minimize friction, heat generation, and wear. This results in a significantly longer service life and more consistent performance over time compared to conventional linear guides. The high-rigidity construction, with its optimized ball groove profile and large contact angles, provides exceptional resistance to all directional moments—roll, pitch, and yaw—ensuring the moving platform remains stable and true to its path. The rails and blocks are manufactured from high-carbon chromium bearing steel, heat-treated to achieve supreme hardness and durability, and are available with optional seals and grease nipples for enhanced contamination protection and simplified maintenance in harsh environments. The performance advantages of the FBL56H P13 SERIES are substantial. Its primary benefit is its immense load-carrying capacity, which allows for the design of more compact machinery by reducing the number of required guide units. The high rigidity translates directly into improved machining and positioning accuracy, as the system resists deflection under cutting forces or heavy payloads. The low-friction Caged Ball design ensures smooth, quiet, and highly efficient motion, contributing to energy savings and a superior surface finish in machining applications. Furthermore, the system's precision-ground raceways guarantee high running accuracy and low noise levels, which is critical for high-speed applications and sensitive manufacturing environments. Typical applications for this heavy-duty linear guide are found wherever massive loads and precision must coexist. In industrial machinery, it is the backbone of large-scale CNC gantry mills, heavy-duty machining centers, and precision grinding machines, where it supports the weight of the spindle and workpiece while maintaining micron-level accuracy. Within the automotive industry, the FBL56H P13 is integral to automated welding systems for car bodies, large robotic transfer lines, and high-precision assembly stations for engines and transmissions. In the realm of precision equipment, it enables the stable and accurate movement of stages in semiconductor manufacturing, large-format coordinate measuring machines (CMMs), and advanced optical alignment systems, where any deviation or vibration would be detrimental to the process.

The THK FBL56H SERIES represents a high-capacity linear motion solution engineered for applications demanding exceptional load-bearing capabilities and unwavering precision under extreme conditions. This double slide rail configuration features two parallel FBL56H slide units mounted on a common base rail, creating a robust, stable platform capable of withstanding substantial moments and complex loading scenarios. Designed with a large cross-section and optimized ball circuit geometry, the system distributes stress evenly across four raceways per slide block, significantly enhancing rigidity and service life while minimizing deformation under heavy loads. Key technical features include the incorporation of THK's patented Caged Ball technology, which separates individual rolling elements with a precision polymer retainer. This design eliminates metal-to-metal contact between balls, reducing friction, heat generation, and wear, even at high speeds or in contaminated environments. The caged structure prevents skewing and ensures smooth, consistent motion with remarkably low noise levels. The FBL56H utilizes large-diameter balls and a high ball count within each block, dramatically increasing load ratings. Static load capacities reach 1,130 kN, while dynamic load ratings are specified at 705 kN, making it suitable for the most demanding industrial tasks. The series is available with various accuracy grades and preload options, allowing for fine-tuning according to specific application requirements for precision and rigidity. Sealing is comprehensive, employing multi-lip, labyrinth-style seals and optional scrapers to provide superior protection against dust, chips, and other particulate contaminants, ensuring reliable operation in harsh manufacturing environments. Performance advantages are substantial, centered on unparalleled durability and positional accuracy. The double slide configuration offers exceptional resistance to overturning moments, roll, pitch, and yaw, maintaining alignment and precision over long travel distances and extended operational lifetimes. This inherent stability translates to improved machining accuracy, reduced part rejection rates, and minimized maintenance downtime. The low-friction Caged Ball design contributes to higher achievable speeds and accelerations for a component of this size, while also enabling smoother motion profiles and reducing required drive force, which can lead to energy savings and the use of smaller, more cost-effective motors and drives. Typical applications for the FBL56H SERIES are found in heavy-duty industrial machinery, large-scale automation, and specialized sectors requiring robust linear guidance. In industrial machinery, it is ideally suited for large vertical machining centers, heavy-duty gantry mills, boring machines, and press feed systems where massive workpieces and high cutting forces are commonplace. Within the automotive industry, these slide rails form the backbone of large assembly and transfer lines, heavy-duty robotic welding and handling cells, and massive stamping press automation. In the realm of precision equipment, the FBL56H is deployed in large-scale coordinate measuring machines (CMMs), semiconductor wafer handling systems for larger substrates, and specialized test rigs and simulators that must support significant weight while maintaining precise, repeatable motion. Its robust construction and high reliability make it a critical component for maximizing uptime and productivity in capital-intensive operations.

The THK FBL35K SERIES represents a robust double slide rail system engineered for exceptionally heavy-load applications where precision, durability, and high load capacity are non-negotiable. Designed with a nominal width of 35mm, this series incorporates two parallel slide rails integrated with a single, rigid carriage block, effectively distributing loads and moments across a wider base to enhance stability and performance under strenuous conditions. Its construction utilizes THK's proprietary Caged Ball technology, where precision steel balls are retained within a polymer cage, significantly reducing friction, minimizing heat generation, and eliminating the need for re-lubrication over extended operational periods. This design not only ensures smooth, near-silent linear motion but also drastically cuts maintenance requirements and prevents ball-to-ball contact, which can lead to wear and noise. Key technical features include an optimized ball groove profile that maximizes contact area between the balls and raceways, substantially boosting load ratings—both dynamic and static—while maintaining high rigidity against all directional moments (pitch, yaw, and roll). The FBL35K SERIES is pre-loaded to eliminate backlash, providing exceptional positional accuracy and repeatability essential for precision-driven tasks. Sealed end caps and optional scrapers protect the internal mechanism from contaminants like dust, chips, and moisture, ensuring reliable operation even in harsh industrial environments. Manufactured from high-carbon chromium bearing steel, hardened and precision-ground, these components offer superior wear resistance and long service life. Performance advantages are most evident in scenarios demanding high stiffness and shock resistance. The double rail configuration inherently resists torsional forces, making it ideal for applications where off-center or moment loads are prevalent. Its ability to handle combined loads—radial, reverse radial, and lateral—simultaneously allows for versatile mounting orientations without compromising performance. The low-friction operation contributes to higher efficiency, reducing the power requirements of drive motors and enabling faster, more responsive motion cycles. Energy savings and reduced operational noise levels further underscore its suitability for modern, automated settings. Typical applications span multiple high-demand sectors. In industrial machinery, the FBL35K SERIES is deployed in heavy-duty CNC machining centers for supporting gantry-type milling heads, large-capacity automated storage and retrieval systems (ASRS) for pallet handling, and precision press feeds requiring unwavering alignment under cyclic loads. Within automotive manufacturing, it serves in robotic welding arms handling heavy car body parts, engine block transfer lines, and vehicle assembly positioning fixtures where precision and endurance are critical. In precision equipment, it finds use in large-format coordinate measuring machines (CMM), semiconductor wafer handling robots, and medical imaging device slides that necessitate smooth, accurate, and vibration-free motion over long travel distances. By combining high load capacity with precision engineering, the FBL35K SERIES delivers a dependable solution for the most challenging linear motion requirements.

The THK FBL51H P14 SERIES represents a high-performance double slide rail system engineered for medium-load applications demanding exceptional rigidity, precision, and longevity. This robust linear motion solution integrates two parallel FBL slide rails with a compatible carriage block, creating a stable, guided motion platform capable of handling significant moment loads and overturning forces. The series is characterized by its 51mm rail width and a standardized P14 pitch for mounting hole spacing, ensuring straightforward integration and interchangeability within existing machinery frameworks. Technically, the FBL51H P14 employs THK's advanced roller-based recirculating system. Unlike traditional ball-based designs, the use of precision rollers as the load-bearing elements significantly increases contact area with the raceway. This fundamental design choice yields a substantial boost in load capacity, rigidity, and shock resistance. The rollers are retained within a high-strength, polymer cage that ensures smooth, consistent recirculation, minimizing vibration and noise during high-speed operation. Furthermore, the integrated seals and wipers are highly effective at excluding contaminants like metal chips and dust while retaining lubrication, which is critical for maintaining performance and preventing premature wear in harsh industrial environments. Pre-loaded carriage options are available to eliminate internal clearance, providing exceptional positional accuracy and repeatability for precision tasks. The performance advantages of this series are directly tied to its construction. The doubled rail configuration offers superior resistance to moment loads in all directions—roll, pitch, and yaw—making the system incredibly stable under complex force conditions. Its high rigidity minimizes deflection under load, which is paramount for maintaining machining or assembly accuracy. The roller technology not only allows for higher load ratings compared to equivalently sized ball slide systems but also contributes to a longer operational life and reduced maintenance intervals. These systems are designed for high-speed, high-acceleration duty cycles, delivering smooth motion that enhances overall equipment efficiency and throughput. Typical applications for the THK FBL51H P14 SERIES are found in sectors where reliability and precision under medium loads are non-negotiable. In industrial machinery, it is extensively used in the vertical columns and traversing axes of heavy-duty machining centers, CNC milling machines, and grinding equipment, where it provides the foundational stability for precise material removal. Within the automotive manufacturing sector, these slide rails are ideal for the robust positioning arms of welding robots, heavy part transfer systems, and precise fixturing in engine assembly lines. In the realm of precision equipment, the FBL51H P14 serves critical roles in semiconductor manufacturing apparatus, such as in wafer handling robots and inspection stages, where its vibration-damping characteristics and flawless motion smoothness are essential for protecting delicate components and ensuring micron-level accuracy.

The THK FBL51H P13 SERIES represents a high-capacity linear motion solution engineered for demanding industrial applications where robust performance and exceptional load-bearing capabilities are paramount. This double slide rail system features a sophisticated recirculating ball design with precision-ground raceways that ensure smooth, near-frictionless motion even under substantial medium-to-heavy loads. The FBL51H P13 incorporates THK's patented Caged Ball technology, where precision steel balls are maintained in uniform separation by a synthetic resin retainer. This design eliminates metal-to-metal contact between balls, drastically reducing friction, heat generation, and wear while preventing ball crowding during high-speed operation. The system delivers remarkable positional accuracy with minimal running noise, making it suitable for environments where precision and quiet operation are critical. Technical specifications reveal a highly durable construction with hardened steel components providing exceptional resistance to brinelling and deformation under shock loads. The rail features four rows of balls arranged in a Gothic arch groove configuration, creating an optimal contact angle that enables simultaneous radial, reverse radial, and lateral load support. This multi-directional load capacity allows the FBL51H P13 to handle complex moment loads including pitch, yaw, and roll forces with minimal deflection. The series offers preloaded options that eliminate internal clearance, delivering enhanced rigidity and vibration damping for applications requiring exceptional positioning stability. Sealing systems incorporate multiple protective layers including metal scrapers and elastomeric seals that effectively exclude contaminants while retaining lubrication, ensuring long-term reliability in harsh operating environments containing dust, chips, or other particulate matter. Performance advantages extend beyond basic linear motion capabilities to include significantly extended service life, reduced maintenance requirements, and consistent precision over millions of operating cycles. The optimized ball circulation path minimizes resistance fluctuations during directional changes, contributing to smooth velocity transitions and reduced servo motor demands. Thermal expansion characteristics are carefully engineered to maintain performance stability across wide temperature variations common in industrial settings. These attributes translate to reduced total cost of ownership through decreased energy consumption, lower replacement frequency, and minimal production downtime for maintenance. Typical applications span multiple industries where reliability under substantial loads is essential. In industrial automation, the FBL51H P13 excels in heavy-duty gantry systems, large CNC machining centers performing milling operations, and automated storage/retrieval systems handling substantial payloads. Automotive manufacturing utilizes these slide rails in robotic welding cells, heavy part transfer systems, and precision assembly stations requiring rigid support for positioning equipment. The series also serves precision equipment applications including semiconductor manufacturing platforms, large-format coordinate measuring machines, and specialized medical devices where stable, vibration-free motion is imperative. The FBL51H P13's combination of high load capacity, precision engineering, and environmental resistance establishes it as a versatile solution for engineers designing machinery that must deliver consistent performance under challenging operational conditions.

The THK FBL51H SERIES Slide Rail Double Slide Medium Load Model represents a significant advancement in linear motion technology, engineered to deliver exceptional performance under demanding industrial conditions. This robust system features a double slide configuration that effectively distributes loads across two parallel rails, significantly enhancing stability and load capacity while minimizing deflection. Constructed with precision-ground raceways and high-grade steel, the FBL51H SERIES incorporates THK's patented Caged Ball technology, which separates rolling elements with a polymer cage to reduce friction, prevent ball-to-ball contact, and eliminate the need for grease replenishment in many applications. Key technical features include an optimized ball groove profile that maximizes contact area between the balls and raceway, resulting in higher rigidity and improved accuracy. The series offers four accuracy classes (Normal, High, Precision, and Ultra-Precision) with running parallelism tolerances as tight as 7μm per meter for the Ultra-Precision grade. With a basic dynamic load rating reaching 152 kN and static load capacity up to 305 kN, these rails maintain exceptional performance even under substantial moment loads. The integrated sealing system combines metal scrapers and contact seals to provide superior protection against contaminants, while the corrosion-resistant options make them suitable for harsh environments. Performance advantages extend beyond mere load capacity. The FBL51H SERIES achieves smooth motion characteristics with consistent friction values throughout its service life, contributing to improved positioning accuracy and repeatability. The caged ball design reduces vibration and noise generation while allowing for higher operating speeds compared to conventional linear guides. Maintenance requirements are substantially reduced due to the permanent lubrication system and effective seal configuration, leading to increased machine uptime and lower total cost of ownership. Thermal deformation is minimized through symmetrical design and optimized heat dissipation properties. Typical applications span multiple industries where reliability and precision are paramount. In industrial machinery, these slide rails are deployed in heavy-duty machining centers, large-scale transfer systems, and automated assembly lines requiring precise positioning of heavy components. The automotive industry utilizes FBL51H systems in robotic welding cells, body-in-white fixtures, and powertrain assembly equipment where high moment load resistance is critical. Precision equipment applications include semiconductor manufacturing tools, large coordinate measuring machines, and medical device assembly systems that demand micron-level accuracy under substantial loads. The series' robust construction also makes it suitable for injection molding machines, printing presses, and material handling systems where continuous operation under medium to heavy loads is required.

The THK FBL35D Series represents a high-performance double slide rail system engineered for medium-load applications demanding exceptional rigidity, precision, and long-term operational reliability. This robust linear motion solution integrates two parallel FBL35-type slide rails with a compatible carriage block, creating a stable, balanced support structure ideal for handling significant moments and complex loads. The FBL35D is characterized by its 35mm rail width, offering an optimal balance between load capacity and compact design, making it suitable for integration into machinery where space constraints and performance are critical. Technically, the FBL35D Series incorporates THK's patented Caged Ball technology, where the recirculating steel balls are securely held within a polymer cage. This design fundamentally eliminates ball-to-ball contact, drastically reducing friction, heat generation, and wear. The result is a dramatic extension of service life, consistent smooth motion at high speeds, and a significant reduction in lubrication requirements compared to conventional linear guide systems. The rails and blocks are manufactured from high-carbon chromium bearing steel, heat-treated to achieve a surface hardness of HRC 58-64, ensuring superior resistance to indentation and abrasive wear. Precision grinding of all raceway surfaces guarantees high running accuracy and low noise levels, even under demanding cyclical operations. The inclusion of effective sealing systems, comprising scrapers and end seals, protects the critical ball recirculation pathways from industrial contaminants like dust, chips, and moisture, thereby maintaining the system's integrity and precision in harsh environments. The performance advantages of the FBL35D are substantial. Its double-rail configuration provides outstanding resistance to overturning moments, torsional forces, and complex load combinations, ensuring unparalleled motion stability. This inherent rigidity minimizes deflection under load, which is crucial for maintaining positional accuracy in precision applications. The low-friction Caged Ball design enables higher maximum speeds and accelerations while consuming less drive power, contributing to overall energy efficiency. Furthermore, the reduced maintenance needs and extended lubrication intervals translate to lower total cost of ownership and increased machine uptime. Typical applications for the THK FBL35D Series are found across industries where reliability under medium loads is paramount. In industrial machinery, it is extensively used in the vertical columns and traverse mechanisms of heavy-duty machining centers, high-speed gantry-style CNC routers, and automated pallet changers. Within the automotive manufacturing sector, these slide rails are integral to the robust framing stations of robotic welding lines, precise positioning units in engine assembly systems, and heavy-load transfer conveyors. In the realm of precision equipment, the FBL35D provides the stable, high-accuracy linear motion required in semiconductor wafer handling robots, large-format coordinate measuring machines (CMMs), and the stages of advanced inspection and testing apparatus. Its combination of strength, precision, and durability makes it a cornerstone component for engineers designing machinery that must perform reliably in continuous, high-cycle production environments.

The THK FBL35G P14 SERIES represents a high-performance double slide rail system engineered for medium-load applications demanding exceptional rigidity, precision, and long-term operational reliability. This model features a compact, robust design with a 35mm rail width, integrating two parallel slide rails into a single, unified assembly. The system utilizes THK's advanced LM roller guide technology, where precision-ground rollers circulate within a rigid track, significantly reducing friction and enabling smooth, highly accurate linear motion. A key technical feature is the incorporation of a dust-resistant seal and a highly efficient grease lubrication system, which work in concert to protect the internal rolling elements from contaminants like dust, chips, and moisture, thereby ensuring consistent performance and dramatically extending service life even in harsh industrial environments. Performance advantages of the FBL35G P14 are substantial. The double rail configuration provides superior moment load capacity and overturning rigidity compared to single rail units, effectively resisting complex multi-directional forces encountered during operation. This results in minimal deflection and exceptional positional accuracy, which is critical for precision machining and assembly tasks. The low-friction roller mechanism contributes to high-speed capability with minimal heat generation and lower driving force requirements, enhancing overall energy efficiency. Furthermore, the pre-loaded design minimizes play and backlash, ensuring high stiffness and repeatability for demanding applications. The series is designed for easy installation and maintenance, with high interchangeability of components, reducing machine downtime and simplifying inventory management for end-users. Typical applications for this robust linear motion system are found across various high-demand sectors. In industrial machinery, it is ideally suited for the vertical and horizontal axes of heavy-duty machining centers, high-precision grinding machines, and the gantry structures of large-scale automated welding and cutting systems, where its rigidity ensures machining accuracy. Within automotive manufacturing systems, the FBL35G P14 is deployed in high-precision assembly robots, automated pallet transfer lines, and precision testing equipment for engines and transmissions, where its durability and precision are paramount. In the realm of precision equipment, this series provides the stable and accurate motion base for semiconductor manufacturing apparatus, including wafer handling robots and inspection stages, as well as in high-accuracy optical positioning systems and advanced medical imaging devices, where smooth, vibration-free movement is essential for product quality and diagnostic integrity.

The THK FBL35G P13 SERIES represents a high-performance double slide rail system engineered for medium-load applications demanding exceptional rigidity, precision, and long-term operational reliability. This model, with its 35mm rail width, is constructed as a complete, pre-assembled unit integrating two parallel FBL-type slide rails onto a common, rigid base plate. This monolithic design eliminates the complexities and potential alignment errors associated with installing and aligning two separate rail systems, ensuring perfect parallelism and significantly reducing assembly time and labor costs. The core of its performance lies in the incorporation of THK's patented LM Guide technology, utilizing a recirculating ball bearing system within a Gothic arch groove design. This configuration provides four-point contact for the balls, delivering high rigidity, excellent load capacity in all directions—radial, reverse-radial, and lateral—and superior accuracy of movement. Key technical features define the FBL35G P13's capabilities. The double rail structure inherently offers a massively increased moment load capacity, making it exceptionally resistant to overturning forces, a critical factor in applications with off-center loads or significant torque. The series is designed for smooth, low-friction motion with high positional accuracy, facilitated by precision-ground raceways and meticulously manufactured balls. Sealing is a critical consideration in industrial environments; the FBL35G P13 is typically equipped with high-performance seals and scrapers that effectively prevent the ingress of contaminants like dust, chips, and moisture, thereby protecting the internal bearing mechanism and ensuring a long service life with minimal maintenance. The model designation, including "P13," often refers to specific preload levels and accuracy classes, which are optimized to minimize deflection under load and suppress vibration, resulting in stable, chatter-free operation. The performance advantages of this system translate directly into tangible benefits for demanding industrial settings. Its high rigidity and damping characteristics ensure minimal deflection and vibration during high-speed operation or under heavy load, which is paramount for maintaining machining accuracy or assembly precision. The pre-assembled nature guarantees operational reliability from the outset, as the factory-set alignment is maintained, eliminating a common source of premature wear and failure. This robustness leads to reduced downtime, lower lifetime maintenance costs, and enhanced overall equipment productivity. Typical applications for the THK FBL35G P13 SERIES are found wherever robust, precise linear motion is required under substantial loads. In industrial machinery, it is ideally suited for the vertical columns and traversing axes of heavy-duty machining centers, the gantry systems of large-format CNC routers and plasma cutters, and as a core component in automated assembly and transfer lines. Within the automotive manufacturing sector, these slide rails are deployed in precision welding robots, heavy-duty part handling manipulators, and the sliding bases of high-precision testing and inspection equipment. In the realm of precision equipment, the FBL35G P13 provides the stable foundation for semiconductor manufacturing stages, precision measuring instruments, and advanced optical positioning systems where unwavering stability under load is non-negotiable.

The THK FBL 35N P16 SERIES represents a specialized double slide rail configuration engineered for light-load applications requiring exceptional precision and smooth linear motion. This compact yet robust system integrates two parallel slide rails with a single carriage block, creating a stable platform that effectively resists moment loads while maintaining precise alignment. Designed with a nominal width of 35mm, the series features a standardized P16 bolt hole pattern for straightforward mounting and integration into various mechanical structures. Its construction utilizes THK's proprietary LM guide technology, where precision-ground raceways and high-grade bearing balls ensure minimal friction and consistent performance over extended operational periods. Key technical features define the series' capability. The double rail structure significantly enhances rigidity and load distribution, allowing the system to handle not only vertical forces but also substantial moment loads from multiple directions. A highly efficient sealing system is integrated, comprising scrapers and end seals that proactively exclude contaminants like dust, chips, and moisture, thereby protecting the internal ball recirculation system and preserving lubrication. For applications demanding cleanliness or corrosion resistance, options include stainless steel components for the rails, blocks, and balls. The preload adjustment mechanism is another critical feature, enabling fine-tuning to eliminate internal clearance, which results in minimal deflection under load and exceptionally smooth, precise movement with negligible vibration. Performance advantages are substantial and directly impact application outcomes. The system's low friction coefficient translates into very smooth motion, reducing the power required for actuation and enabling higher operational speeds with improved positional accuracy. This smoothness also minimizes stick-slip phenomena, which is crucial for applications involving slow, precise indexing or start-stop cycles. The enhanced rigidity provided by the double rail design ensures high positional repeatability, even when subjected to varying load conditions or external forces. Furthermore, the robust sealing and high-quality materials contribute to a long service life and consistent performance, reducing the need for frequent maintenance and lowering the total cost of ownership. Typical applications for the FBL 35N P16 SERIES are found across industries where precision, reliability, and compactness are paramount. In industrial automation, these units are ideal for the linear axes of precision assembly robots, pick-and-place mechanisms, and the sliding tables of coordinate measuring machines (CMMs). Within the automotive sector, they are deployed in precision testing equipment, automated welding gun positioners, and sensitive components of electronic component manufacturing lines. The series is also extensively used in precision equipment such as optical positioning stages, medical device manufacturing machinery, and semiconductor handling systems, where their smooth motion, high rigidity, and resistance to contamination are critical for maintaining micron-level accuracy and operational reliability.

The THK FBL 35N SERIES represents a specialized double slide rail system engineered for light-load applications where precision, compact design, and smooth motion are paramount. This series features two parallel slide rails integrated into a single unit, providing enhanced stability and load distribution compared to single rail configurations. With a rail width of 35mm, the FBL 35N is optimized for scenarios requiring minimal space utilization without sacrificing performance. The system incorporates THK's patented LM roller guide technology, where precision-ground rollers replace traditional balls, resulting in higher rigidity, reduced vibration, and improved accuracy over long-term use. Each rail within the double slide setup is pre-loaded to eliminate backlash, ensuring consistent positioning repeatability within microns. Key technical features include a corrosion-resistant stainless steel construction for the rails and rollers, making it suitable for environments exposed to moisture, chemicals, or cleanroom conditions. The FBL 35N SERIES employs a sealed design with integrated wipers and grease retainers, which prevent contamination from dust, debris, or fluids, thereby extending service life and reducing maintenance intervals. Its compact profile allows for easy integration into machinery with limited mounting space, while the double rail configuration supports moment loads effectively, maintaining alignment under asymmetric forces. The series is available with optional accessories such as rail covers and custom lubrication ports to adapt to specific operational needs. Performance advantages of the FBL 35N SERIES stem from its low-friction operation, which enables high-speed motion with minimal energy consumption and heat generation. The roller-based guide system offers a higher load capacity per unit size compared to ball-based alternatives, allowing it to handle moderate loads with exceptional smoothness and low noise levels. This makes it ideal for applications demanding quiet operation, such as in medical or laboratory equipment. The double slide design enhances resistance to torsional forces, improving trajectory accuracy in multi-axis systems. Additionally, the series demonstrates long-term durability under frequent start-stop cycles or reciprocating motions, reducing downtime and total cost of ownership. Typical applications for the THK FBL 35N SERIES span across industrial machinery, automotive systems, and precision equipment. In industrial automation, it is commonly used in pick-and-place robots, linear actuators for assembly lines, and positioning stages in semiconductor manufacturing, where precise linear movement is critical. Within the automotive sector, this series finds use in testing equipment, brake system calibrators, and sensor mounting systems that require reliable motion under light loads. For precision equipment, it serves in optical alignment devices, coordinate measuring machines (CMMs), and 3D printer gantries, where its low deflection and high accuracy ensure consistent results. The FBL 35N SERIES is also employed in packaging machinery, medical diagnostic devices, and CNC tool changers, highlighting its versatility in diverse, demanding environments.

The THK FBL27D SERIES represents a specialized double slide rail system engineered for light load applications where precision, compact design, and smooth motion are paramount. This model features a 27mm rail width and incorporates two parallel slide rails integrated into a single unit, providing enhanced stability and load distribution compared to single rail alternatives. The system utilizes THK's advanced LM guide technology, with precision-ground raceways and high-grade steel balls that deliver exceptionally low friction coefficients and minimal rolling resistance. Each rail is manufactured with strict tolerances to ensure parallel alignment and consistent performance across the entire travel length. Key technical features include a compact cross-section that minimizes space requirements while maintaining rigidity, making it ideal for machinery with limited installation areas. The FBL27D incorporates four-row circular arc groove contacts in the ball recirculation system, which provides high rigidity and excellent vibration damping characteristics. Special seal designs prevent contamination from dust, chips, and other particulates, ensuring reliable operation in demanding environments. The series offers optional configurations with different accuracy grades (standard and high precision) to match specific application requirements, along with various lubrication options for maintenance optimization. Performance advantages are particularly evident in the system's smooth motion characteristics and long service life. The double rail configuration significantly increases moment load capacity, allowing the FBL27D to handle complex force applications without compromising positioning accuracy. With friction coefficients as low as 0.001-0.003, the system enables precise micro-positioning and reduces drive power requirements. The optimized ball recirculation design minimizes noise during operation while maintaining consistent performance at speeds up to 2 m/s. These attributes contribute to improved machining accuracy, reduced energy consumption, and lower overall operating costs through extended maintenance intervals. In industrial machinery applications, the FBL27D SERIES finds extensive use in precision assembly equipment, semiconductor manufacturing systems, and electronic component production lines where multiple axes must operate synchronously with micron-level accuracy. The system's compact design makes it particularly suitable for robotic end-effectors, tool changers, and measuring instrument stages that require minimal footprint without sacrificing performance. Automotive manufacturing utilizes these slide rails in automated welding fixtures, precision testing equipment, and component transfer systems where reliable, high-speed positioning is essential. The series also serves critical functions in medical device manufacturing, optical alignment systems, and laboratory automation equipment where smooth, vibration-free motion directly impacts product quality and measurement precision.