W2803SA-1P-C5Z5 Ball Screw NSK Small Lead Ball Screw PFT Type Nut

The W2803SA-1P-C5Z5 is an SA-type ball screw for machine tools, manufactured by NSK, and is a high-precision, ground-grade ball screw specifically designed for machine tools. This model belongs to the SA series (with end machining) and features an external circulation (tube circulation) design, offering excellent rigidity and smooth motion performance.

Key Advantages of the W2803SA-1P-C5Z5 Precision Ball Screw:

Finished Ends: Both ends have pre-machined bearing positions at the fixed and support ends according to NSK standards (typically matching NSK WBK15 series support units), eliminating the need for secondary machining and significantly shortening the equipment assembly cycle.

High Rigidity and Zero Backlash: Through the interference fit (Z) 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 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.

Typical Applications of the W2803SA-1P-C5Z5 Ball Screw: Due to its high rigidity, zero backlash, and extremely high positioning accuracy, this screw is widely used in various demanding industrial and automation fields:

Machine Tools: CNC machine tools, precision engraving machines

Automation Equipment: High-precision robots, automated assembly lines

Precision Instruments: Medical devices, precision testing equipment