W2505SA-3P-C5Z6 SA type P preload ball screw NSK 2605 Ball Screw

The W2505SA-3P-C5Z6 is a ground-grade, finished-end ball screw from NSK Japan. It belongs to NSK's SA series (finished-end/small lead series for machine tools). Both ends of the screw are precision-machined at the factory, allowing direct assembly with standard support units. It is commonly used in CNC machine tools, automated equipment, and precision positioning mechanisms.

Key Advantages of the W2505SA-3P-C5Z6 Ball Screw:

Finished-end: Both ends have bearing positions (usually matching NSK WBK15 series support units) machined to NSK standards, eliminating the need for secondary machining and significantly shortening equipment assembly cycles.

High Rigidity and Zero Backlash: Through the interference fit (P) of the internal steel balls, excellent positioning repeatability is maintained even under frequent alternating forward and reverse rotation conditions.

High Efficiency and Low Friction: The ground-grade raceway combined with precision steel balls typically achieves a transmission efficiency of over 90%, requiring less effort and generating less heat than a trapezoidal ball screw.

Common Applications of W2505SA-3P-C5Z6 SA Type Ball Screws:

CNC Machine Tools: X/Y/Z axis drives in small precision CNC machine tools and engraving machines.

Precision Automation: Semiconductor wafer handling, electronic component placement machines, and robotic arm positioning axes.

Measuring and Testing Instruments: Linear drives in coordinate measuring machines and optical precision inspection stages.