The NSK W2804SA-1P-C5Z5 is a finished ball screw with a 28mm outer diameter and 5mm lead. It features an external tubular ball recirculation structure, ensuring smooth transmission and low noise operation.
The W2804SA-1P-C5Z5 ball screw is configured with interference preload to achieve zero axial backlash. With a high precision grade of C5, it offers precise positioning, strong stability, and excellent load-bearing capacity. Balancing high rigidity with low friction, it is widely used in precision machine tools, automated positioning platforms, semiconductor equipment, and various high-precision industrial transmission devices.
Features of NSK SA Type Ball Screws for Machine Tools:
Excellent Precision: Standard C5 precision, with a preload structure achieving zero backlash, high positioning and repeatability accuracy, meeting the precision machining requirements of machine tools.
Sufficient Rigidity: Optimized raceway structure and flange-type nut design provide strong load-bearing capacity and impact resistance, suitable for heavy-duty feed axis operations on small and medium-sized machine tools.
Good Operating Performance: Low frictional resistance, low operating temperature rise, excellent noise reduction from the circulating structure, allowing for higher dn values, and supporting high-speed stable feed.
Easy Installation: The ball screw shaft end is prefabricated, requiring no secondary machining, and can be directly matched with NSK standard support units, making assembly and equipment replacement simple and efficient.
Wide Compatibility: Available in various shaft diameters and lead specifications, with a standardized structure, widely used in CNC lathes, machining centers, drilling and tapping machines, and other machine tool equipment.
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.
Item |
Specification |
Model No. |
W2804SA-1P-C5Z5 |
Series |
Shaft End Finished Product |
Type |
SA |
Screw Shaft Diameter [mm] |
28 |
Lead [mm] |
5 |
Accuracy Grade |
C5 |
Ball Diameter [mm] |
3.175 |
Valid Number of Laps |
2.5×2 |
Nut Length [mm] |
56 |
Maximum travel [mm] |
408 |
Screw Length (Lt) [mm] |
470 |
Screw Length (La) [mm] |
500 |
Screw Length (L) [mm] |
599 |
Weight [kg] |
3.3 |
Rated Dynamic Load [N] |
13000 |
Rated Static Load [N] |
24400 |
Maximum Speed [Fixed-Free] (min-1) |
2500 |
Drive Side Support Unit |
WBK20-01(Square) WBK20-11(Round) |
Reverse Drive Side |
WBK20S-01(Square) |

Copyright © Jingpeng Machinery&Equipment(Shanghai) Co.,Ltd All Rights Reserved