The THK Ball Screw Support Unit Square Supported Side Model EF SERIES represents a precision-engineered solution for stabilizing and supporting ball screw assemblies in demanding motion control applications. Characterized by its square-shaped housing and side-mounted support configuration, this unit is specifically designed to handle high axial loads and rotational speeds while maintaining exceptional rigidity and alignment accuracy. Constructed from high-grade bearing steel with advanced surface treatments, the EF SERIES incorporates pre-loaded angular contact ball bearings that minimize axial play and ensure smooth, consistent performance under varying operational conditions. The sealed design integrates high-performance grease and labyrinth seals to prevent contamination from dust, chips, or moisture, significantly extending service life even in harsh industrial environments. Installation is streamlined through standardized mounting dimensions and pre-drilled tap holes, allowing for straightforward integration into existing machinery frames without complex alignment procedures. Key technical features include optimized internal bearing geometry for reduced friction and heat generation, along with a compact footprint that maximizes space efficiency in tightly configured systems. The unit’s support rigidity dampens vibrations and mitigates deflection, contributing to improved positional repeatability on the order of micrometers. Performance advantages are evident in its ability to sustain continuous operation at rotational speeds exceeding 3,000 rpm while supporting dynamic loads up to 15 kN, making it suitable for applications requiring rapid reciprocating motion or prolonged high-duty cycles. Efficiency gains are achieved through lowered torque resistance and reduced energy consumption, directly impacting operational cost savings over time. Additionally, the maintenance-free design eliminates the need for periodic lubrication, reducing downtime and total cost of ownership. Typical applications span multiple sectors where precision linear motion is critical. In industrial machinery, the EF SERIES is deployed in CNC machining centers for supporting lead screws in X, Y, and Z axes, ensuring precise toolpath execution and surface finish quality. Automotive manufacturing systems utilize these units in robotic welding arms, automated assembly jigs, and transmission testing equipment, where reliability under high-cycle demands is paramount. Within precision equipment, the support units are integral to semiconductor wafer handling robots, optical positioning stages, and medical imaging devices, where minimal backlash and vibration are essential for sub-micron accuracy. The versatility of the EF SERIES also extends to packaging machinery, printing presses, and aerospace actuator systems, demonstrating its adaptability across diverse operational requirements. By combining robust construction with refined engineering, THK’s EF SERIES delivers a dependable foundation for enhancing the performance and longevity of ball screw-driven systems worldwide.

THK's Ball Screw Support Unit Square Supported Side Model BF SERIES represents a critical advancement in linear motion technology, engineered to provide robust axial support for ball screws in demanding industrial applications. This square-shaped support unit features a compact, rigid design that ensures stable mounting and precise alignment, essential for maintaining the accuracy and longevity of ball screw-driven systems. Constructed from high-strength materials, the BF SERIES incorporates precision-machined surfaces and standardized dimensions, allowing for seamless integration into existing machinery without extensive modifications. Key technical features of the BF SERIES include its square-supported side configuration, which enhances structural integrity and distributes loads evenly across the unit. It is equipped with pre-lubricated, high-capacity angular contact bearings that accommodate both radial and axial forces, minimizing deflection and vibration during operation. The unit's sealed design protects internal components from contaminants like dust, chips, and moisture, ensuring reliable performance in harsh environments. Additionally, the BF SERIES supports easy installation and maintenance, with bolt-hole patterns that align with common industrial standards, reducing downtime and labor costs. Performance advantages of this support unit are substantial, starting with its ability to sustain high rotational speeds and dynamic loads, which translates to improved efficiency and reduced wear on ball screws. By providing consistent axial rigidity, it minimizes backlash and thermal expansion effects, contributing to sub-micron-level positioning accuracy in precision applications. The unit's durability under continuous operation reduces the need for frequent replacements, lowering total cost of ownership. Moreover, its compatibility with various ball screw diameters and mounting orientations offers flexibility in system design, enabling customization for specific operational requirements. Typical applications of the THK BF SERIES span across multiple industries, including industrial machinery, where it is employed in CNC machining centers, injection molding machines, and automated assembly lines to ensure smooth, precise linear motion. In automotive systems, it supports critical processes such as robotic welding, engine component testing, and transmission assembly, where high load capacity and reliability are paramount. For precision equipment, this unit finds use in semiconductor manufacturing devices, medical imaging systems, and optical alignment instruments, where minimal vibration and exact positioning are crucial. By enhancing the stability and performance of ball screw mechanisms, the BF SERIES helps optimize productivity, accuracy, and safety in diverse operational settings, making it an indispensable component for modern automation and motion control solutions.

THK's EK SERIES Ball Screw Support Unit Square Fixed Side provides a robust, precision-engineered solution for stabilizing ball screw assemblies in demanding linear motion applications. This fixed-side support unit features a square housing design that ensures secure mounting and optimal alignment with ball screws, effectively absorbing axial loads and preventing deflection during operation. Manufactured from high-strength carbon steel with a black oxide finish, the unit offers exceptional corrosion resistance and durability in harsh industrial environments. Its compact, space-saving design incorporates precision-ground contact surfaces and pre-loaded angular contact bearings, delivering high rigidity and minimal axial play for consistent performance under heavy loads and high-speed conditions. Key technical features include standardized mounting dimensions for easy integration with THK ball screws, a labyrinth seal structure that effectively excludes contaminants while retaining lubrication, and a temperature-resistant design that maintains stability across operating temperatures from -10°C to 80°C. The unit supports ball screw diameters ranging from 15mm to 80mm, with dynamic load ratings up to 50kN and rotational speed capabilities reaching 5,000 rpm depending on model specifications. The pre-adjusted bearing clearance eliminates the need for complex alignment procedures during installation, while the square housing design provides four mounting surfaces for flexible installation orientations. Performance advantages stem from THK's precision manufacturing standards, resulting in reduced vibration, lower noise levels, and extended service life compared to conventional support units. The optimized bearing configuration minimizes friction torque, contributing to higher mechanical efficiency and reduced power consumption in driven systems. Enhanced sealing performance protects against dust, chips, and other particulate contamination common in industrial settings, making the EK SERIES particularly suitable for applications requiring maintenance-free operation over extended periods. The unit's high rigidity ensures accurate positional repeatability within microns, critical for precision machining and automation processes. Typical applications span multiple industries where reliable linear motion is paramount. In industrial machinery, these support units are integral components in CNC machining centers, injection molding machines, and precision grinding equipment, where they maintain ball screw alignment under heavy cutting forces and continuous operation. Automotive manufacturing systems utilize them in robotic welding arms, automated assembly lines, and precision testing equipment that demand high load capacity and positional accuracy. Within precision equipment sectors, the EK SERIES finds application in semiconductor manufacturing apparatus, optical positioning systems, and medical device automation where minimal backlash and vibration-free operation are essential. The units also serve critical functions in material handling systems, packaging machinery, and industrial robotics where consistent performance under varying load conditions ensures operational reliability and reduced downtime.

The THK Ball Screw Support Unit Square Fixed Side Model BK SERIES represents a critical component in precision linear motion systems, engineered to provide robust axial support for ball screws while maintaining exceptional alignment accuracy. Designed with a square-shaped housing that offers superior mounting stability, these units incorporate high-rigidity angular contact ball bearings pre-loaded to eliminate backlash and ensure smooth rotational motion. The sealed structure effectively prevents lubricant leakage and contaminants from entering, extending service life in demanding environments. Standardized dimensions allow for easy integration with THK ball screws and interchangeability across machinery platforms, while the compact design conserves valuable space in equipment layouts. Key technical features include the use of precision-ground bearing seats that guarantee concentricity and perpendicularity with the ball screw shaft, minimizing runout and vibration during operation. The fixed-side configuration absorbs axial loads and constrains radial movement, making it ideal for applications requiring precise positional control. Units are available in multiple size options to accommodate different shaft diameters, with options for standard or high-temperature grease lubrication to match operational requirements. The inclusion of a labyrinth seal and contact seal combination provides dual protection against particulate ingress and fluid contaminants, ensuring reliable performance in harsh conditions like machining centers or automated assembly lines. Performance advantages of the BK SERIES stem from its ability to enhance system rigidity and positioning accuracy, directly contributing to improved machining tolerances and repeatability in automated processes. The pre-loaded bearing design reduces heat generation and energy loss by minimizing frictional resistance, leading to higher efficiency and longer maintenance intervals. By stabilizing the ball screw against deflection under load, these units help prevent premature wear on screw threads and nuts, reducing total cost of ownership over the equipment lifecycle. Their vibration-damping characteristics also contribute to quieter operation and smoother motion profiles, which is critical in high-speed applications such as CNC machining or semiconductor manufacturing equipment. Typical applications span a wide range of industries where precision linear motion is paramount. In industrial machinery, BK SERIES units are commonly employed in CNC lathes, milling machines, and grinding equipment to support feed axes and spindle drives, ensuring consistent part quality and surface finish. Automotive manufacturing systems utilize them in robotic welding arms, transfer lines, and precision assembly jigs to maintain alignment during high-cycle operations. Within precision equipment, these support units are found in optical positioning stages, coordinate measuring machines, and medical device actuators where micron-level accuracy is essential. Their durability and sealed construction also make them suitable for environments exposed to coolants, metal chips, or washdown procedures, underscoring their versatility across diverse operational settings.

The THK Ball Screw Support Unit Round Type on the Supported Side Model FF SERIES is a precision-engineered component designed to provide stable and reliable support for ball screw assemblies, ensuring optimal performance in demanding linear motion applications. This support unit is specifically configured for the supported side of the ball screw, where it accommodates axial loads and radial forces while maintaining precise alignment. Constructed with a durable round housing, the FF SERIES integrates a high-quality angular contact ball bearing, which is pre-loaded to eliminate backlash and enhance rigidity. The unit features a compact, space-saving design, making it suitable for installations where dimensional constraints are a critical consideration. Sealing elements, such as rubber seals or metal shields, are incorporated to protect the internal bearing from contaminants like dust, chips, and moisture, thereby extending service life and reducing maintenance requirements. The housing is typically manufactured from high-strength steel or cast iron, providing excellent resistance to deformation under load, and it includes standardized mounting holes for straightforward integration into machinery frames or structures. Key technical features of the FF SERIES include its ability to handle combined loads, thanks to the angular contact bearing design that supports both axial and radial forces simultaneously. The pre-load adjustment ensures minimal deflection during operation, which is crucial for maintaining accuracy in precision applications. Additionally, the unit is lubricated for life or designed for easy re-lubrication, depending on the model, allowing for extended operation without frequent servicing. Performance advantages are evident in its high-speed capability, low friction, and quiet operation, which contribute to increased efficiency and reduced energy consumption in systems. The robust construction minimizes vibration and heat generation, leading to enhanced durability and consistent performance over time. By providing precise support, the FF SERIES helps prevent ball screw whip and buckling, which can compromise system accuracy and lifespan. Typical applications for the THK FF SERIES span various industries, including industrial machinery, where it is used in CNC machining centers, milling machines, and grinding equipment to ensure precise tool positioning and smooth motion control. In automotive systems, this support unit is employed in assembly robots, welding apparatus, and precision testing machines, where reliability and repeatability are paramount for high-volume production. Within precision equipment, it finds use in semiconductor manufacturing devices, medical imaging systems, and optical alignment instruments, where even minor deviations can impact overall performance. The FF SERIES’s versatility and reliability make it an ideal choice for engineers seeking to optimize linear motion systems for accuracy, speed, and longevity in diverse operational environments.

The THK Ball Screw Support Unit Round Type Fixed Side Model FK SERIES represents a precision-engineered solution for stabilizing and supporting ball screws in demanding linear motion applications. These units are specifically designed as the fixed-side support for ball screws, providing robust axial rigidity and precise rotational alignment critical for high-accuracy systems. The round-type housing design allows for straightforward mounting in standard circular bores, simplifying installation while maintaining exceptional structural integrity. Technically, the FK SERIES incorporates a high-precision, preloaded angular contact ball bearing as its core rotational element. This bearing is specifically selected and configured to handle substantial axial loads while minimizing rotational friction and heat generation. The unit features a compact, sealed design with integrated contact seals that effectively prevent lubricant leakage and contaminant ingress, ensuring long-term reliability even in harsh operating environments. The housing is manufactured from high-strength steel or equivalent durable materials, with precision-ground mounting surfaces that guarantee perpendicularity and concentricity with the ball screw axis. Standard models are available with standard or low-temperature rise specifications, allowing selection based on specific speed and thermal management requirements. Performance advantages of the FK SERIES are significant across multiple parameters. Its primary benefit lies in exceptional axial rigidity, which directly translates to improved positioning accuracy and repeatability by minimizing deflection under load. The low-friction bearing design contributes to higher mechanical efficiency, reducing drive motor requirements and energy consumption. The sealed construction extends maintenance intervals by retaining lubrication and excluding abrasive particles, leading to a longer service life and reduced total cost of ownership. Furthermore, the unit's ability to accommodate high rotational speeds makes it suitable for rapid traverse applications without sacrificing stability or generating excessive noise. Typical applications for the FK SERIES are found wherever precise linear motion is paramount. In industrial machinery, these support units are integral to CNC machining centers, where they provide the stable foundation for high-speed tool positioning and heavy-duty cutting operations. They are equally critical in industrial robots, particularly in articulated arm joints and linear actuators requiring precise movement control. Within automotive manufacturing systems, FK units support ball screws in automated assembly lines, precision welding equipment, and component testing machinery that demand reliable, high-cycle operation. In the realm of precision equipment, these components are essential to semiconductor manufacturing apparatus, optical positioning stages, and medical device automation where sub-micron accuracy and vibration damping are crucial. The series' versatility also extends to packaging machinery, printing presses, and coordinate measuring machines where smooth, precise linear motion directly impacts product quality and operational efficiency.