The THK Ball Spline Ball Spline (full ball type) Medium Torque Model LT represents a significant advancement in linear motion technology, engineered to deliver exceptional torque transmission capabilities while maintaining smooth, precise linear movement. This medium torque model is specifically designed with a full ball type structure, where the entire circumference of the spline shaft is engaged with recirculating balls, ensuring uniform load distribution and enhanced rotational torque capacity. Key technical features include a precision-ground spline shaft with optimized ball groove geometry, high-rigidity nut housing, and advanced sealing mechanisms to prevent contamination. The design incorporates a full complement of balls that recirculate through precisely machined pathways, minimizing friction and enabling high-speed operation with minimal heat generation.

Performance advantages of the Model LT are substantial, offering up to 30% higher torque transmission compared to standard ball splines while maintaining backlash-free operation. The full ball contact configuration provides superior rotational accuracy with angular transmission errors of less than ±0.05 degrees, making it ideal for applications requiring precise angular positioning. The optimized preload adjustment system allows for fine-tuning to match specific application requirements, ensuring consistent performance throughout the component’s service life. With a dynamic load rating reaching 15 kN and static load capacity of 25 kN, this medium torque model demonstrates remarkable durability under demanding operating conditions. The incorporation of THK’s proprietary surface treatment technology on the spline shaft enhances wear resistance and corrosion protection, significantly extending maintenance intervals.

In industrial machinery applications, the LT model excels in rotary transfer systems where simultaneous linear and rotational movements are required for automated assembly processes. The component’s ability to handle medium torque loads makes it particularly suitable for indexing tables in machining centers, where precise angular positioning must be maintained during linear travel. Automotive manufacturing systems benefit from its implementation in welding robot arms that require both linear extension and controlled rotation for accessing complex weld geometries. The automotive industry also utilizes these ball splines in precision steering column adjustment mechanisms and transmission assembly equipment where accurate rotational positioning is critical.

Precision equipment applications leverage the Model LT’s exceptional accuracy in semiconductor manufacturing apparatus, particularly in wafer handling robots that must maintain precise orientation during linear transport between process stations. Medical device manufacturers employ these components in advanced imaging systems where gantry rotation must synchronize perfectly with linear positioning movements. The telecommunications industry utilizes them in antenna positioning systems that require both linear adjustment and precise rotational control for optimal signal alignment. Laboratory automation systems incorporate the LT model in sample handling equipment where coordinated linear and rotary motions are necessary for efficient processing throughput.

The medium torque characteristics make this ball spline particularly valuable in packaging machinery for rotary capping stations and in printing equipment for precision roller positioning. Material handling systems benefit from its implementation in automated storage and retrieval machines where load orientation must be maintained during vertical and horizontal movements. The component’s robust construction and maintenance-friendly design ensure reliable performance in continuous operation environments, while the standardized mounting dimensions facilitate straightforward integration into existing machinery layouts.