The NSK W2521FA-1P-C5Z20 ball screw is a FA-type precision ball screw with a 25mm outer diameter and 20mm lead, featuring a single-nut structure, C5 precision grade, and zero-backlash preload. It boasts advantages such as high rigidity, zero axial backlash, low noise, high-speed operation, and high positioning accuracy.
Features of C5 Precision Ball Screw W2521FA-1P-C5Z20:
Low Noise: Utilizes advanced circulation system and sealing technology for low operating noise.
High Speed Performance: Maximum speed up to 5000 min⁻¹, suitable for high-speed applications.
Zero Backlash Preload: Preload design with zero axial backlash, improving positioning accuracy and rigidity.
Precision Grade C5: High lead accuracy, suitable for applications requiring precise position control.
Application Industries of NSK FA Type Shaft-End Finished Ball Screws:
CNC Machine Tools: Machining centers, lathes, milling machines, etc.
Automation Equipment: Industrial robots, automated assembly lines, precision positioning platforms
Semiconductor Equipment: Wafer handling, testing equipment
Medical Equipment: Precision medical instruments, diagnostic equipment
Precision Measuring Instruments: Coordinate measuring machines, image measuring instruments
Item |
Specification |
Model No. |
W2521FA-1P-C5Z20 |
Series |
Shaft End Finished Product |
Type |
FA |
Screw Shaft Diameter [mm] |
25 |
Lead [mm] |
20 |
Accuracy Grade |
C5 |
Ball Diameter [mm] |
4.762 |
Valid Number of Laps |
2.5×1 |
Gap Symbol |
Z |
Circulation Method |
Pipe Circulation |
Nut Length [mm] |
96 |
Maximum travel [mm] |
2040 |
Screw Length (Lt) [mm] |
2150 |
Screw Length (La) [mm] |
2180 |
Screw Length (L) [mm] |
2313 |
Weight [kg] |
9.1 |
Rated Dynamic Load [N] |
11700 |
Rated Static Load [N] |
16300 |
Maximum Speed [Fixed-Free] (min-1) |
2800 |
Drive Side Support Unit |
WBK20-01A(Square) WBK20-11(Round) |
Reverse Drive Side Support Unit |
WBK20S-01(Square) |

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