SUN LEADER CTRA-300 CNC high-precision external thread grinding machine

As demand for high-precision transmission components continues to grow in industries such as semiconductor manufacturing, robotics, aerospace, machine tools, and industrial automation, manufacturers require grinding solutions that deliver exceptional accuracy, productivity, and long-term stability. SUN LEADER developed the CTRA-300 CNC High-Precision External Thread Grinding Machine to meet these evolving requirements through advanced grinding technology and precision engineering.

 

The CTRA-300 features a natural granite machine structure, providing outstanding rigidity, superior thermal stability, and excellent vibration damping. Compared with conventional cast iron machines, the granite construction significantly reduces thermal deformation and suppresses vibration, ensuring consistent machining accuracy and superior surface quality during continuous operation.

 

Equipped with precision ball screws, high-rigidity linear guideways, AC servo drives, and 0.0001 mm linear encoders, the machine achieves sub-micron positioning accuracy and exceptional repeatability. This advanced motion control system guarantees excellent dimensional consistency and highly accurate thread profiles, making it ideal for demanding precision grinding applications.

 

A key innovation of the CTRA-300 is its synchronized angular wheel dressing technology, which allows the grinding wheel to be dressed directly at the programmed grinding angle without returning the spindle to the zero position. This unique design significantly reduces setup time, improves dressing efficiency, minimizes positioning errors, and maintains optimal wheel geometry for superior thread accuracy and higher productivity.

 

Powered by an intuitive PC-based CNC control system, the CTRA-300 supports automatic diameter compensation, taper thread grinding, multi-section grinding, relief grinding, incomplete thread grinding, and customizable machining cycles. Designed for manufacturing planetary roller screws, ball screws, ball splines, lead screws, and other precision threaded components, the CTRA-300 combines intelligent control, robust machine construction, and innovative grinding technology to provide manufacturers with a reliable, high-performance solution for next-generation precision thread production, delivering exceptional quality, efficiency, and long-term operational reliability.

SUN LEADER

Contact person: Maggie

Email : maggie@ctt-pro.com