SA系列
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Quick Inquiry
W2004SA-1P-C5Z4 is an NSK Standard series SA (finished shaft ends) standard-stock precision ball screw: 20 mm shaft diameter, 4 mm lead, accuracy grade C5 (JIS), axial play 0 (preloaded), preload: Oversize-ball preload (P preload), with basic load ratings of Ca 6.55 kN (dynamic) and C0a 10.9 kN (static). Effective thread length approx. 400 mm class (code 04); 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 SA series with 20 mm shaft dia. × 4 mm lead is also available as: W2002SA-1P-C5Z4, W2002SA-2P-C5Z4, W2003SA-1P-C5Z4, W2005SA-1P-C5Z4, W2006SA-1P-C5Z4.
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.
| Specification | Unit | W2004SA-1P-C5Z4 |
|---|---|---|
| Series | - | Standard series SA (finished shaft ends) |
| Shaft diameter | mm | 20 |
| Lead | mm | 4 |
| Effective thread length class | - | approx. 400 mm class (code 04) (overall length per NSK tables) |
| Accuracy grade | - | C5 (JIS) |
| Axial play | mm | 0 (preloaded) |
| Preload | - | Oversize-ball preload (P preload) |
| Basic dynamic load rating Ca | kN | 6.55 |
| Basic static load rating C0a | kN | 10.9 |
| Design serial no. | - | 1 (NSK internal design number) |
| Shaft ends | - | Finished (standard shaft-end form) |
Machine Tool (SA Type)・Standard series SA (finished shaft ends)
