W2011FA-5PGX-C5Z40 is an NSK FA series (finished shaft ends) standard-stock precision ball screw: 20 mm shaft diameter, 40 mm lead, accuracy grade C5 (JIS), axial play 0 (preloaded), preload: Oversize-ball preload (P preload). Effective thread length approx. 1100 mm class (code 11); confirm the overall length with NSK dimension tables or with Nahshon. W-reference standard-stock items are standardized with comparatively short lead times.
Not sure about accuracy grades? See our guide: How to choose ball screw accuracy grades (C0–C10) (in Chinese).
Other lengths with the same specification
The FA series with 20 mm shaft dia. × 40 mm lead is also available as: W2005FA-5PGX-C5Z40, W2007FA-5PGX-C5Z40, W2009FA-5PGX-C5Z40, W2013FA-1PGX-C5Z40, W2017FA-1PGX-C5Z40.
Customization
Shaft-end machining to your drawings is available. Add the part number (or your drawing) to the inquiry cart — Nahshon works directly with NSK to confirm specs, quotation and delivery.