Search
Linear Bushing (Compact)Model SH

The THK Guide Ball Bushing Linear Bushing, specifically the compact Model SH, represents a significant advancement in linear motion technology, designed for applications where space constraints and precision are paramount. This compact linear bushing features a unique ball retainer design that prevents ball-to-ball contact, significantly reducing friction, heat generation, and wear. The SH model incorporates a steel outer ring with a precision-ground inner raceway, ensuring smooth, low-friction motion and high rigidity. Its compact dimensions allow for integration into machinery with limited installation space, without compromising on load capacity or accuracy. Key technical features include a high load-carrying capacity due to optimized ball circulation, excellent resistance to shock and vibration, and compatibility with standard shafts, simplifying maintenance and replacement. The bushing is available in various clearance grades, allowing for precise adjustment to application requirements, from zero-clearance for high precision to standard clearance for general use.

Performance advantages of the Model SH are substantial, starting with its ability to deliver smooth, quiet operation even at high speeds, which enhances the efficiency and lifespan of machinery. The reduced friction minimizes energy consumption and heat buildup, contributing to lower operational costs and improved reliability in continuous-use scenarios. Its compact design enables higher density mounting in multi-axis systems, such as in robotics or automated assembly lines, where space optimization is critical. Additionally, the bushing’s corrosion-resistant materials and optional seals protect against contaminants like dust and moisture, making it suitable for harsh industrial environments. This results in extended service intervals and reduced downtime, as the components require less frequent lubrication and maintenance. The precision engineering ensures repeatable accuracy, with minimal deviation over long operational periods, which is essential for applications demanding tight tolerances.

Typical applications for the THK Model SH Linear Bushing span across various high-demand sectors. In industrial machinery, it is commonly used in CNC machine tools, where it facilitates precise linear movement in slides and feed mechanisms, enhancing cutting accuracy and surface finish. In automotive systems, the bushing finds roles in engine components, transmission assemblies, and braking systems, where its compact size and durability support reliable performance under high loads and temperatures. For precision equipment, such as semiconductor manufacturing devices or medical instruments, the Model SH ensures stable, vibration-free motion critical for delicate operations like wafer handling or surgical robotics. Its versatility also extends to packaging machinery, where it enables fast, repeatable positioning in filling and sealing processes. Overall, the THK Guide Ball Bushing Linear Bushing Model SH offers a robust, space-saving solution that boosts productivity and precision in diverse mechanical systems, from heavy-duty industrial setups to sensitive electronic applications.

MORE +
CLOSE +
SH-L SERIES
THK's SH and SH-L SERIES Linear Bushings represent a compact, high-performance solution for linear motion applications where space constraints and precision are paramount. These guide ball bushings are engineered with a unique single-molded retainer design that ensures smooth, consistent movement while maintaining exceptional rigidity and load capacity. The compact SH-L variant offers an even more streamlined profile for ultra-tight installation spaces without sacrificing performance. Key technical features include a precision-ground outer ring for optimal fitment, a reinforced resin retainer that minimizes noise and vibration, and high-carbon chromium bearing steel balls for extended service life. The bushings incorporate THK's patented circulation system, which ensures uninterrupted ball movement and eliminates edge loading. With clearance adjustment options ranging from standard to preload, the series accommodates varying operational requirements from general automation to high-precision positioning. Standard seals on both sides provide effective protection against contaminants while retaining lubrication. Performance advantages stem from THK's optimized ball groove geometry, which distributes load evenly across four contact points. This design achieves a 1.8-times higher load capacity compared to conventional linear bushings of similar dimensions while maintaining low friction coefficients. The SH SERIES demonstrates exceptional durability under both radial and moment loads, with dynamic load ratings reaching 2.94 kN and static load ratings up to 4.9 kN depending on model size. Their compact cross-sections enable direct mounting in minimal space, while the simplified structure reduces component count for easier maintenance and higher reliability. Typical applications span multiple industries where precision linear guidance is critical. In industrial machinery, these bushings are deployed in CNC tool changers, automated assembly robots, and precision measuring equipment. The automotive sector utilizes them in electronic throttle control systems, transmission testing apparatus, and robotic welding arms. For precision equipment, they serve essential functions in semiconductor manufacturing stages, medical device positioning systems, and optical instrument focusing mechanisms. The SH-L SERIES' reduced cross-section proves particularly valuable in miniature automated guided vehicles, compact inspection devices, and space-constrained laboratory automation where conventional linear bushings cannot be accommodated. These linear bushings maintain consistent performance across temperature variations from -10°C to 80°C and can operate at speeds up to 2 m/s with proper lubrication. The series includes standard sizes from 6 mm to 50 mm bore diameters, with custom configurations available for specialized applications. Installation is simplified through precision machining tolerances that ensure interchangeability and reduce assembly time, while the maintenance-friendly design allows for easy relubrication through standard grease fittings.
View
SH SERIES
THK's SH SERIES Linear Bushing (Compact) represents a refined evolution in compact linear motion technology, engineered to deliver exceptional precision, reliability, and space efficiency in demanding applications. As part of the esteemed Guide Ball Bushing family, this series incorporates a compact design without compromising on performance, making it ideal for machinery where space constraints and weight reduction are critical. The SH SERIES features a unique ball retainer design that prevents ball dropout during handling or assembly, simplifying installation and maintenance. Its construction includes high-carbon chromium bearing steel rings and cages, heat-treated for optimal hardness and durability, ensuring prolonged service life even under high-load conditions. Key technical features of the SH SERIES include its compact cross-sectional dimensions, which allow for seamless integration into tight spaces while maintaining high load capacities. The bushing employs a circular-arc groove in the outer ring and a Gothic-arch groove in the inner ring, facilitating smooth motion with minimal friction and excellent resistance to moment loads. This design ensures stable operation and precise guidance, critical for applications requiring repeatable accuracy. Additionally, the series offers superior sealing options, such as integrated seals or shields, to protect against contaminants like dust, chips, and moisture, thereby extending component life in harsh environments. Lubrication is optimized through pre-greased configurations or optional lubrication units, reducing maintenance intervals and enhancing operational efficiency. Performance advantages of the SH SERIES are evident in its ability to handle combined radial and moment loads with high rigidity, reducing vibration and noise during operation. The low-friction coefficient translates to energy savings and smoother motion profiles, while the high-speed capability supports dynamic applications without sacrificing precision. Its corrosion-resistant options, including stainless steel variants, make it suitable for cleanrooms, food processing, or medical equipment where hygiene and contamination control are paramount. The compact design also contributes to overall system weight reduction, improving energy efficiency and responsiveness in automated systems. Typical applications span across industrial machinery, where the SH SERIES is deployed in CNC machining centers for tool changers, sliding doors, and material handling systems, ensuring precise linear guidance with minimal backlash. In automotive systems, it finds use in assembly robots, welding equipment, and engine component testers, where compactness and durability under cyclic loads are essential. For precision equipment, such as semiconductor manufacturing devices, optical alignment systems, and laboratory automation, the SH SERIES provides the accuracy and cleanliness required for micron-level positioning. Its versatility and robustness make it a go-to solution for engineers seeking to enhance performance in compact linear motion designs, driving innovation in automation and precision engineering sectors worldwide.
View
noksbearings

ABOUT US

PRODUCT