LG-L SERIES

The THK LG Series Ball Bushing represents a fundamental advancement in linear motion technology, engineered to deliver exceptional precision, durability, and operational efficiency in demanding industrial environments. This compact, high-performance linear guide system incorporates a unique ball circulation design within its bushing, enabling smooth, low-friction linear movement along a precision-ground shaft. The LG Series is specifically designed to handle moderate loads while maintaining minimal deflection and high positional accuracy, making it an ideal solution for applications requiring reliable, maintenance-free linear guidance.

Key technical features of the LG Series include its internally engineered ball recirculation pathway, which ensures consistent ball movement and even load distribution across all contact points. The bushing is constructed from high-grade bearing steel, heat-treated to achieve superior hardness and wear resistance, while the integrated seals effectively protect the internal ball tracks from contaminants such as dust, chips, and moisture. Available in multiple accuracy classes and preload options, the LG Series allows for precise tuning to match specific application requirements, from general-purpose automation to high-precision positioning tasks. Its compact cross-sectional design facilitates easy integration into space-constrained machinery layouts without compromising performance or load capacity.

Performance advantages are immediately evident in its low coefficient of friction, which translates to reduced drive power requirements and lower energy consumption over the system’s operational lifespan. The optimized ball groove geometry minimizes vibration and noise during operation, contributing to a quieter working environment and enhanced machine stability. With its high rigidity and excellent damping characteristics, the LG Series maintains precise alignment under varying load conditions, reducing the risk of premature wear or failure. Maintenance intervals are extended due to the effective sealing and durable construction, resulting in lower total cost of ownership and increased machine uptime.

Typical applications for the THK LG Series Ball Bushing span across multiple industries where reliable linear motion is critical. In industrial machinery, it is commonly employed in automated assembly lines, material handling systems, and packaging equipment, where its smooth motion and durability ensure consistent throughput and reduced downtime. Within automotive manufacturing, the LG Series guides components in robotic welding arms, precision testing fixtures, and parts transfer mechanisms, where accuracy and repeatability are paramount. In the realm of precision equipment, these bushings are integral to coordinate measuring machines (CMM), optical positioning stages, and semiconductor manufacturing tools, providing the sub-millimeter accuracy required for sensitive production processes. The versatility and reliability of the LG Series make it a preferred choice for engineers seeking to enhance the performance and longevity of their linear motion systems across diverse operational contexts.

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Model No. Main dimensions Basic load rating
Outer Diameter Length Dynamic rating
C
Static rating
C0
D Tolerance L Tolerance
mm mm mm mm N N
LG4L Linear Bushing
8
0-0.009
19
0-0.12
466
757
LG6L Linear Bushing
12
0-0.011
27
0-0.2
860
1499
LG8L Linear Bushing
15
0-0.011
30
0-0.2
1203
1916