NSK Preloaded Ball Screw W2809SA-2Z-C5Z5 Z Offset Preload Ball Screw

The W2809SA-2Z-C5Z5 is a high-precision, ground ball screw from NSK, designed for machine tools. This SA type (with end machining) ball screw features an external circulation (tube circulation) design, offering excellent rigidity and smooth motion performance.

The W2809SA-2Z-C5Z5 is an SA ball screw with a shaft diameter of 28mm and a lead of 5mm. It adopts a ZFT flange nut and a Z preload structure with no axial backlash. The accuracy is C5 grade. It is suitable for conventional precision positioning applications such as automated equipment, semiconductors, and medical instruments. It is an NSK shaft-end finished ball screw.

The core advantages of the NSK W2809SA-2Z-C5Z5 ball screw:

Ready to use: The shaft ends of the screw are pre-machined to NSK's official standard bearing housing specifications before leaving the factory, requiring no secondary machining and allowing direct installation of standard support seats (such as the WBK series).

Extremely short lead time: As a standard NSK inventory item, large-scale planned production significantly reduces delivery time and procurement costs.

Superior durability: Utilizing high-purity alloy steel with high-precision ground grooves (Gothic arc grooves), frictional resistance is extremely low, maintaining stable positioning accuracy even during long-term operation.

Typical Applications of W2809SA-2Z-C5Z5 Ball Screws

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