The THK Linear Ball Slide With Rack Model LSC SERIES represents a highly integrated linear motion solution, combining a precision linear slide mechanism with a rigid, high-accuracy rack gear. This design eliminates the need for separate component alignment, providing a compact, self-contained unit for applications requiring both precise linear guidance and controlled rotary-to-linear motion conversion. The system is engineered around a robust base and slide block that incorporates a recirculating linear ball bearing system, ensuring smooth, low-friction travel along the hardened steel guide rails. Integrated directly onto the side of the base is a precision-ground rack, manufactured to tight tolerances for optimal meshing with a drive pinion, delivering efficient power transmission and accurate positional control.

Key technical features define the LSC SERIES’s performance envelope. The linear guide utilizes THK’s proven ball recirculation technology within the slide block, which provides high rigidity, excellent load capacity, and minimal rolling resistance. The rack is typically case-hardened and ground, offering high surface durability and long-term wear resistance for sustained accuracy. Pre-loaded ball elements within the slide block eliminate internal clearance, resulting in high positional accuracy and smooth, non-fluctuating motion without stick-slip. Many models are available with optional seals and wipers to protect the critical rolling elements and rack interface from dust, chips, and other contaminants, significantly enhancing operational life in harsh environments. The unit is designed as a complete assembly, simplifying installation and eliminating the cumulative errors associated with mounting separate rails, carriages, and rack systems.

The performance advantages of this integrated system are substantial for machine designers. By combining the slide and rack, it offers a significant reduction in assembly time and cost while improving overall system accuracy and repeatability. The high rigidity of the unit allows for high-speed operation and high moment load capacities, maintaining stability under complex force conditions. The low friction coefficient of the linear ball guide minimizes driving force requirements, contributing to energy efficiency and allowing for the use of smaller motors and drives. This combination of high speed, high precision, and high load capacity makes it an exceptionally reliable and durable component.

Typical applications for the THK LSC SERIES are found wherever precise linear indexing, positioning, and movement are required alongside a rotary drive input. In industrial machinery, it is extensively used in automated assembly lines, precision machining centers for tool changer arms, and material handling systems like gantry robots and pick-and-place units. Within the automotive manufacturing sector, these systems are critical in welding robot seventh-axis tracks, precision fixture positioning, and automated testing equipment. For precision equipment, the LSC SERIES is ideal for applications such as semiconductor wafer handling robots, precision inspection and measurement stages, and advanced optical positioning systems in manufacturing and research, where its integrated design ensures the consistent accuracy and reliability demanded by these high-technology fields.