Transport Ball Screw

THK Ball Screw Transport Ball Screws represent a pinnacle of engineering in converting rotational motion into precise linear movement, specifically designed for demanding transportation and positioning applications across industrial sectors. These components feature a screw shaft with a precision-ground helical raceway and a nut containing recirculating balls that travel along this path, ensuring minimal friction and highly efficient power transmission. Manufactured with exceptional accuracy, THK Ball Screws achieve lead accuracies as tight as 5 micrometers per 300 mm, guaranteeing repeatable positioning critical for automated systems. Their robust construction often incorporates single or double-nut designs with preloading mechanisms to eliminate axial play, enhancing rigidity and load capacity while resisting backlash under varying operational forces.

Key technical features include the utilization of high-carbon chromium bearing steel, hardened to between 58-62 HRC, providing superior wear resistance and longevity. The balls themselves are manufactured to grade 10 or higher tolerances, and the nut often integrates a compact, highly efficient recirculation system—such as THK’s deflector or end cap designs—that ensures smooth ball circulation even at high speeds. Many models are available with optional seals and wipers to prevent contamination from dust, chips, or moisture, which is vital for maintaining performance in harsh environments. For transport applications, these ball screws are engineered to handle dynamic loads exceeding 20 kN and permissible rotational speeds up to 5,000 rpm, depending on the diameter and lead configuration. Their high mechanical efficiency, typically between 90-95%, translates to reduced power consumption and lower heat generation compared to alternative screw systems.

Performance advantages are substantial in real-world applications. In industrial machinery, such as CNC machining centers and automated assembly lines, THK Transport Ball Screws provide the precise table movements and tool positioning necessary for high-speed, high-accuracy manufacturing. Their rigidity and preload capability minimize deflection under heavy cutting forces, directly improving surface finish quality and dimensional accuracy of machined parts. Within automotive production systems, these ball screws drive robotic welders, material handling gantries, and precision press feeders, where their durability and sustained accuracy under continuous operation reduce downtime and maintenance costs. In precision equipment like semiconductor manufacturing apparatus or medical automation devices, the ball screws’ smooth motion and micron-level precision enable critical processes such as wafer stepper positioning or automated liquid handling, where vibration and positional error are unacceptable.

Typical applications extend to packaging machinery, where they synchronize film feed and sealing operations; printing presses for precise paper advancement; and aerospace test stands for actuating control surfaces. Their ability to deliver consistent performance across millions of cycles makes them a cornerstone in modern automation, enhancing throughput and reliability while supporting advancements in manufacturing technology and precision engineering.

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THK's Ball Screw Transport Ball Screw Model MTF (Unfinished Shaft Ends) SERIES represents a specialized category of linear motion components engineered for applications requiring precise positioning and efficient power transmission in automated transport systems. These ball screws feature shaft ends that are intentionally left unfinished, providing manufacturers with the flexibility to customize mounting configurations, coupling methods, and integration with existing mechanical assemblies. The design eliminates pre-machined end details, allowing for tailored machining to suit specific equipment layouts, space constraints, or connection requirements without compromising the core performance attributes of the ball screw assembly. Technically, the MTF series incorporates a precision-ground screw shaft with a helical raceway and a nut assembly containing recirculating ball bearings. This configuration ensures minimal friction during operation, translating rotational motion into smooth, high-accuracy linear movement. Key features include high rigidity due to optimized ball circuit design, which reduces elastic deformation under load, and preloading options that eliminate axial play for enhanced positional repeatability. The screws are manufactured from high-carbon chromium bearing steel, heat-treated to achieve surface hardness and core toughness, providing resistance to wear and fatigue over extended service life. Lubrication retention features within the nut help maintain consistent performance by reducing the need for frequent maintenance intervals. Performance advantages of the MTF series are evident in its operational efficiency and reliability. The low friction coefficient of the ball screw mechanism results in mechanical efficiencies exceeding 90%, reducing energy consumption and heat generation compared to alternative linear motion solutions. High axial load capacity allows these components to handle significant thrust forces in both compressive and tensile directions, making them suitable for dynamic applications with variable loading conditions. The precision grinding process ensures lead accuracy within micrometers per 300 mm travel, critical for applications demanding tight tolerances. Additionally, the unfinished shaft ends facilitate easier alignment during installation, reducing assembly time and potential errors in complex machinery setups. Typical applications span multiple industries where reliable linear transport is essential. In industrial machinery, the MTF series is deployed in automated material handling systems, such as conveyor drives, transfer lines, and palletizing equipment, where customized shaft connections adapt to varying machine footprints. Automotive manufacturing utilizes these ball screws in robotic welding arms, assembly jigs, and precision testing apparatus that require repeatable positioning for component alignment or quality verification. Within precision equipment, they serve in semiconductor manufacturing tools, optical positioning stages, and medical device automation, where the combination of high accuracy and customizable ends supports integration into sensitive or space-constrained environments. The versatility of the unfinished shaft design also enables use in retrofit applications, modernizing legacy equipment without requiring complete system redesigns.
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THK's Ball Screw Transport Ball Screw Model BNT SERIES represents a specialized advancement in linear motion technology, engineered specifically for high-speed, high-frequency transport applications demanding exceptional precision and reliability. This series incorporates a unique ball screw design where the screw shaft remains stationary while the nut rotates and moves linearly, optimizing performance in automated material handling, assembly lines, and precision positioning systems. The BNT SERIES is characterized by its compact, lightweight construction, which reduces inertial forces and enables rapid acceleration and deceleration, crucial for maximizing throughput in dynamic industrial environments. Key technical features of the BNT SERIES include a precision-ground screw shaft with optimized groove geometry, ensuring smooth ball recirculation and minimal vibration during operation. The nut unit integrates a high-capacity, preloaded ball bearing system that eliminates backlash and maintains rigidity under varying loads. Advanced sealing mechanisms protect internal components from contaminants like dust and debris, extending service life in harsh conditions. Additionally, the series offers customizable options for screw diameters, leads, and mounting configurations, allowing seamless integration into diverse machinery layouts. Performance advantages are evident in its operational efficiency and durability. The BNT SERIES achieves high positional accuracy and repeatability, with lead errors controlled to within microns, making it ideal for applications requiring meticulous alignment. Its low-noise design reduces workplace disturbances, while efficient lubrication systems minimize maintenance intervals. The ball screw's high thrust capacity and thermal stability ensure consistent performance even under continuous, high-cycle operations, reducing downtime and total cost of ownership. Typical applications span multiple sectors, leveraging the BNT SERIES' versatility. In industrial machinery, it drives automated guided vehicles (AGVs), robotic arms, and packaging equipment, where speed and precision enhance production line efficiency. Automotive systems utilize these ball screws in assembly robots, welding fixtures, and testing apparatus, benefiting from their resilience in high-temperature and high-vibration environments. For precision equipment, the series is employed in semiconductor manufacturing tools, medical devices, and optical alignment systems, where sub-micron accuracy is paramount. By combining innovative design with robust engineering, the THK BNT SERIES delivers a reliable solution for modern automation challenges, supporting advancements in productivity and technological innovation across industries.
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The THK Ball Screw Transport Ball Screw Model WTF SERIES represents a specialized evolution in precision linear motion technology, engineered specifically for high-speed transport applications demanding exceptional accuracy and reliability. This series incorporates a unique ball circulation system where balls are efficiently transported through return tubes integrated directly into the nut body, minimizing overall dimensions while maximizing performance stability. Constructed from high-grade chromium steel and subjected to THK's proprietary heat treatment processes, the WTF series achieves superior surface hardness and core toughness, ensuring extended service life even under rigorous operating conditions. The precision-ground screw shafts feature meticulously calculated lead accuracy, with standard models offering grades as tight as C5, while custom options can achieve C3 or higher for ultra-precise positioning requirements. Key technical innovations distinguish the WTF series in demanding industrial environments. The compact nut design incorporates THK's advanced ball guidance technology, which maintains consistent recirculation patterns to eliminate ball-to-ball contact noise and vibration. This results in remarkably smooth operation at velocities exceeding 10 m/s while maintaining positional repeatability within ±5 μm. The series employs optimized preloading mechanisms through selective ball sizing, delivering rigid axial stiffness up to 1,960 N/μm in high-preload configurations. Special seal configurations comprising multiple labyrinth and scraper elements provide IP65-equivalent protection against contaminants, while the integrated oil holes facilitate continuous lubrication for maintenance-intensive applications. Thermal compensation features address expansion concerns in precision machinery, with temperature stability maintained through specially formulated grease compositions. Performance advantages manifest across multiple operational parameters. The WTF series demonstrates 40% higher dynamic load capacity compared to conventional transport ball screws, with rated loads reaching 98 kN in standard configurations. Energy efficiency gains of up to 30% are realized through reduced running torque requirements, achieved by the optimized ball groove geometry that minimizes friction coefficients to 0.001-0.003. The series maintains consistent performance across temperature ranges from -20°C to 120°C without degradation in positioning accuracy. Service life calculations based on THK's enhanced L10 life formula predict 30,000 km of operation under normal loading conditions, with minimal maintenance requirements contributing to reduced total cost of ownership. Industrial implementations span critical applications where precision motion directly impacts productivity and quality. In automotive manufacturing systems, WTF series ball screws drive robotic welding arms and precision assembly stations, providing the micron-level accuracy required for modern vehicle production lines. Semiconductor fabrication equipment utilizes these components in wafer handling robots and photolithography stages, where vibration-free operation at high acceleration rates ensures defect-free processing. Packaging machinery benefits from the series' high-speed capabilities in pick-and-place systems, while medical device manufacturing employs WTF ball screws in automated inspection equipment requiring sub-micron positioning. The transport-oriented design proves particularly valuable in logistics automation, powering high-speed sorting systems and automated storage/retrieval units where reliability and speed directly correlate with throughput capacity.
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THK's BLK Series Ball Screw represents a significant advancement in precision linear motion technology, engineered to deliver exceptional performance in demanding industrial applications. This transport ball screw model features a unique design with a compact, integrated ball circulation system that optimizes load distribution and minimizes friction. The screw shaft is manufactured from high-carbon chromium bearing steel, heat-treated to achieve a surface hardness of 58-62 HRC, ensuring superior wear resistance and long-term durability. Precision grinding of the screw shaft results in lead accuracy grades as tight as C3, providing consistent positional repeatability within microns. The nut body incorporates a resin end cap with a built-in ball deflector, which efficiently guides balls through the recirculation path while reducing noise and vibration during operation. A key technical feature is the use of THK's proprietary ball screw wiper seal, designed to prevent contamination from dust, chips, and other particulates, thereby maintaining lubrication integrity and extending service life. Performance advantages of the BLK Series are evident in its high efficiency, achieving mechanical efficiencies exceeding 90% due to optimized ball-to-raceway contact geometry. This efficiency translates directly into reduced power consumption and lower operational costs for machinery. The series supports dynamic load ratings up to 15 kN and static load ratings of 30 kN, enabling reliable performance under heavy loads and high thrust forces. Its compact nut design allows for space-saving integration into machinery with limited envelope constraints, while the preloaded nut configuration eliminates backlash, ensuring precise motion control critical for applications requiring high positional accuracy. The BLK Series operates smoothly across a wide temperature range from -20°C to 80°C and can attain linear speeds up to 2 m/s, making it suitable for high-speed automation processes. Additionally, its corrosion-resistant options, including stainless steel screw shafts and special surface treatments, enhance suitability for harsh environments like those found in chemical processing or food and beverage industries. Typical applications for the THK BLK Series Ball Screw span multiple sectors where reliability and precision are paramount. In industrial machinery, it is extensively used in CNC machining centers for tool positioning, automated assembly lines for component transfer, and injection molding machines for platen movement. The automotive industry leverages these ball screws in electric power steering systems for precise rack positioning, robotic welding arms for consistent weld paths, and brake forming presses for accurate stroke control. Within precision equipment, the BLK Series finds application in semiconductor manufacturing apparatus for wafer handling stages, medical devices such as MRI table positioning systems, and optical instrument focusing mechanisms where sub-micron accuracy is essential. Its robust construction and maintenance-friendly design, including accessible lubrication ports for routine greasing, ensure minimal downtime and extended operational life, making it a cost-effective solution for continuous production environments. By combining high load capacity, precision engineering, and versatile configuration options, the THK BLK Series Ball Screw meets the rigorous demands of modern automation while supporting advancements in manufacturing efficiency and product quality.
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The THK Ball Screw Transport Ball Screw Model MTF SERIES represents a significant advancement in precision linear motion technology, engineered specifically for applications demanding high-speed transport, exceptional accuracy, and reliable long-term performance. This series incorporates a meticulously designed ball screw mechanism that efficiently converts rotational motion into smooth, linear movement with minimal friction and energy loss. Key technical features include a compact and robust housing, precision-ground screw shafts for optimal load distribution, and high-grade steel balls that ensure consistent operation under varying conditions. The MTF SERIES is characterized by its enhanced rigidity and optimized preload settings, which collectively minimize deflection and backlash, thereby maintaining positional accuracy even during rapid directional changes and high-acceleration cycles. Performance advantages of the MTF SERIES are evident in its ability to achieve high linear speeds while sustaining low noise and vibration levels, contributing to a quieter and more stable operational environment. Its high efficiency, often exceeding 90%, translates to reduced power consumption and lower operational costs over time. The series is designed for durability, with corrosion-resistant treatments and advanced sealing mechanisms that protect against contaminants such as dust, chips, and moisture, extending service life in harsh industrial settings. Additionally, the MTF SERIES supports easy integration and maintenance, featuring standardized mounting dimensions and compatibility with various motor types, which simplifies retrofitting and reduces downtime during installation or servicing. In industrial machinery, the MTF SERIES is widely employed in automated assembly lines, CNC machining centers, and material handling systems where precision positioning and repeatability are critical. For instance, in pick-and-place robots, these ball screws enable swift and accurate component placement, enhancing throughput and product quality. Within automotive systems, the series finds applications in electric power steering mechanisms, transmission controls, and brake testing equipment, providing the responsiveness and reliability needed for safety-critical functions. In the realm of precision equipment, the MTF SERIES is integral to medical devices like MRI scanners and surgical robots, as well as semiconductor manufacturing tools, where its smooth motion and sub-micron accuracy ensure flawless operation in sensitive processes. Overall, the THK MTF SERIES Ball Screw stands as a versatile and high-performance solution, driving efficiency and innovation across diverse industrial, automotive, and precision technology sectors.
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THK's Ball Screw Transport Ball Screw Model JPF SERIES represents a specialized class of linear motion components engineered for the precise and efficient transfer of materials and components in automated systems. These ball screws are designed to convert rotational motion into smooth, highly accurate linear travel, making them indispensable in applications demanding repeatability, high load capacity, and sustained operational reliability. The JPF SERIES is characterized by its robust construction and advanced engineering, tailored to meet the rigorous demands of modern industrial automation, automotive manufacturing, and precision instrumentation. Key technical features of the JPF SERIES include a precision-ground screw shaft with optimized lead accuracy, ensuring minimal deviation during linear travel. The series incorporates a high-capacity, recirculating ball nut design that minimizes friction and distributes loads evenly across multiple contact points, significantly enhancing service life and reducing maintenance requirements. Many models within this series are available with pre-loaded ball nuts to eliminate backlash, providing exceptional positional accuracy critical for precision tasks. The screw shafts are typically manufactured from high-carbon chromium bearing steel, heat-treated to achieve superior surface hardness and wear resistance. Furthermore, select JPF models may feature integrated seals and wipers to protect the ball recirculation path from contaminants like dust, chips, and moisture, ensuring consistent performance even in challenging environments. The performance advantages of the JPF SERIES are substantial. Its high mechanical efficiency, often exceeding 90%, allows for the use of smaller, more energy-efficient drive motors, reducing overall system power consumption and operational costs. The low friction characteristics contribute to smooth, quiet operation with minimal heat generation, which is vital for maintaining precision over extended duty cycles. The design’s high rigidity and load capacity—supporting both axial and moment loads—enable it to handle significant forces without deflection, ensuring stability and accuracy even under dynamic conditions. This reliability translates into reduced downtime and lower total cost of ownership for end-users. Typical applications for the THK JPF SERIES are found across a broad industrial spectrum. In industrial machinery, these ball screws are integral to automated assembly lines, material handling systems, and CNC machine tools, where they facilitate precise positioning of workpieces, tools, and robotic arms. Within the automotive sector, they are employed in welding robots, precision press feeds, and automated guided vehicles (AGVs) for component transfer and assembly processes. In the realm of precision equipment, the JPF SERIES is utilized in semiconductor manufacturing apparatus, medical device automation, and optical alignment systems, where micron-level accuracy and flawless repeatability are non-negotiable. Its versatility and durability make it a cornerstone component for engineers designing systems that require dependable, high-precision linear motion.
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The THK Ball Screw Transport Ball Screw Model CNF SERIES represents a significant advancement in precision linear motion technology, engineered specifically for high-load, high-speed transportation applications where reliability and accuracy are paramount. This series incorporates a unique ball screw design optimized for efficient power transmission and smooth motion control, making it an ideal solution for demanding industrial environments. With its robust construction and meticulous engineering, the CNF SERIES ensures minimal friction, reduced energy consumption, and extended operational life, even under continuous heavy-duty use. Key technical features of the CNF SERIES include a precision-ground screw shaft with optimized lead angles and a compact nut design that maximizes load capacity while minimizing overall dimensions. The series utilizes high-grade steel components and advanced surface treatment technologies to enhance corrosion resistance and wear durability. Its internal ball circulation system is engineered for low noise and vibration, contributing to quieter operation and improved system stability. Additionally, the CNF SERIES offers customizable preload options, allowing for precise adjustment of backlash and rigidity to match specific application requirements. The integration of high-efficiency seals and lubricators ensures consistent performance in contaminated or harsh environments, reducing maintenance intervals and downtime. Performance advantages of the CNF SERIES are evident in its exceptional positional accuracy, repeatability, and dynamic response. The ball screw’s high axial rigidity and optimized ball groove geometry enable precise linear positioning with minimal deflection under load, critical for applications requiring tight tolerances. Its ability to operate at high speeds without sacrificing accuracy or generating excessive heat makes it suitable for rapid cycling and high-throughput systems. The low friction coefficient of the CNF SERIES translates to higher mechanical efficiency, reducing power consumption and operational costs. Furthermore, its long service life and reliability minimize the need for frequent replacements, enhancing overall system uptime and productivity. Typical applications for the THK CNF SERIES span across various sectors, including industrial machinery, automotive systems, and precision equipment. In industrial automation, it is widely used in CNC machine tools, robotic arms, and material handling systems where precise linear motion is essential for machining, assembly, and transport operations. Within the automotive industry, the CNF SERIES finds application in automated production lines, engine assembly systems, and testing equipment, providing reliable motion control for components like slides, lifts, and positioning stages. In precision equipment, such as semiconductor manufacturing devices, medical imaging systems, and optical instruments, the series ensures accurate and stable movement for critical processes like wafer handling, lens positioning, and diagnostic scanning. Its versatility and performance make the CNF SERIES a trusted choice for engineers seeking to optimize motion control in demanding technological environments.
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THK's Ball Screw Transport Ball Screw Model BTK V SERIES represents a significant advancement in precision linear motion technology, engineered specifically for high-load transport applications where reliability, accuracy, and durability are paramount. This series incorporates a unique ball circulation system that ensures smooth, consistent motion even under demanding operational conditions, making it an ideal solution for industrial machinery, automotive manufacturing systems, and precision equipment requiring exact positioning and repeatability. Key technical features of the BTK V SERIES include its compact design, which allows for space-saving integration into machinery without compromising performance. The ball screw utilizes high-grade materials and advanced heat treatment processes to enhance surface hardness and wear resistance, significantly extending service life. Precision grinding of the screw shaft ensures high lead accuracy, with minimal deviation, contributing to superior positional precision. The nut design incorporates a large number of load-carrying balls, distributed evenly to handle substantial axial loads while maintaining low friction and minimal heat generation. Additionally, the series is available in various accuracy grades and preload levels, allowing customization to meet specific application requirements, from general-purpose transport to high-precision tasks. Performance advantages of the BTK V SERIES are evident in its ability to deliver high efficiency and stability. The optimized ball circulation path reduces vibration and noise, enabling smoother operation at high speeds, which is critical in automated production lines and precision assembly systems. Its high rigidity and load capacity make it suitable for applications involving heavy loads, such as material handling in industrial machinery or positioning in automotive robotic arms. The ball screw's low maintenance requirements, due to its sealed design that protects against contaminants like dust and chips, reduce downtime and operational costs. Moreover, its energy-efficient operation, achieved through reduced torque requirements, contributes to lower power consumption in continuous-use scenarios. Typical applications span across multiple sectors, including industrial machinery where the BTK V SERIES is used in CNC machine tools, injection molding machines, and packaging equipment for precise linear movement and load support. In automotive systems, it finds use in assembly robots, brake forming presses, and test rigs that demand repeatable accuracy under high stress. For precision equipment, this series is employed in semiconductor manufacturing devices, medical imaging systems, and optical alignment instruments, where micron-level precision and reliability are essential. By combining robust construction with advanced engineering, the THK BTK V SERIES ensures enhanced productivity and longevity, making it a trusted choice for engineers seeking dependable linear motion solutions in challenging environments.
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