NSK FA Type W2811SA-1P-C5Z5 Ball Screw 28mm Diameter Ball Screw

The W2811SA-1P-C5Z5 is an NSK ball screw with a 28mm diameter and 5mm lead, featuring a precision-ground, finished shaft end. The shaft end is pre-machined at the factory, requiring no further processing, and can be directly installed with a standard support unit.

The W2811SA-1P-C5Z5 SA type ball screw utilizes a single-nut interference preload to achieve zero axial backlash. With a C5 precision rating, it features a compact structure, accurate positioning, smooth operation, and moderate rigidity, making it suitable for small to medium-sized precision platforms, engraving machines, automated equipment, and testing instruments—situations requiring backlash-free precision transmission in both forward and reverse rotation.

Key Features and Advantages of the W2811SA-1P-C5Z5 Ball Screw

Shaft End Machining: The SA type ball screw shaft end is precision machined, eliminating the need for secondary machining by the user. It can be directly matched with NSK WBK/WBN series support units, significantly shortening the assembly cycle and reducing installation costs.

Zero Backlash High Precision: The single-nut interference preload design completely eliminates axial backlash. C5-level precision ensures minimal positioning error, suitable for precision positioning scenarios requiring frequent forward and reverse rotation.

Compact Structure: The single-nut design saves more installation space than double-nut designs, making it suitable for miniaturized equipment. The P preload provides sufficient rigidity to meet general load requirements.

In Stock: As a standard NSK stock item, it boasts short delivery cycles, enabling rapid response to equipment manufacturing and maintenance needs.

SA-type lead screws are ideal for equipment with comprehensive requirements for positioning accuracy, installation speed, and space constraints:

CNC machine tools: X/Y/Z axis feed systems for small machining centers, CNC lathes, engraving and milling machines, and grinding machines.

Precision instruments: Measuring equipment, semiconductor manufacturing equipment, and industrial robotic arms.