The NSK W3211SA-3P-C5Z6 SA type single-nut ball screw is a shaft-end finished product. The screw has an outer diameter of 32mm, a lead of 6mm, and a precision grade of C5. It comes standard with a flanged single nut and internal interference preload to achieve zero backlash. The rated dynamic load is approximately 34700N.
"Shaft-end finished product" means that both ends of the screw have been precision-machined to standard specifications (including steps, threads, keyways, etc.). It can be directly used with standard support units from NSK or THK, requiring no secondary fitting, and is ready to use immediately. It is widely applicable to small and medium-sized CNC equipment, automation modules, and precision transmission mechanisms that require certain positioning accuracy and rigidity.
W3211SA-3P-C5Z6 Ball Screw Core Features and Advantages
Pre-machined Shaft End: The shaft end has been precision machined, eliminating the need for secondary machining by the user. It can be directly matched with NSK WBK series support units, significantly shortening the assembly cycle and reducing installation costs.
Zero Backlash High Precision: The single-nut interference preload design completely eliminates axial backlash. C5-level precision ensures extremely low positioning error, suitable for precision positioning scenarios requiring frequent forward and reverse rotation.
Compact Structure: The single-nut design saves more installation space than double-nut designs, making it suitable for miniaturized equipment. Meanwhile, the P preload provides sufficient rigidity to meet general load requirements.
In Stock: As a standard NSK stock item, it has a short delivery cycle, enabling rapid response to equipment manufacturing and maintenance needs.
Common Applications of W3211SA-3P-C5Z6 SA Type Ball Screws:
CNC Machine Tools: X/Y/Z axis transmission for small precision CNC machine tools and engraving machines.
Precision Automation: Semiconductor wafer handling, electronic component placement machines, and robotic arm positioning axes.
Measuring and Testing Instruments: Linear drive for coordinate measuring machines and optical precision inspection stages.
Item |
Specification |
Model No. |
W3211SA-3P-C5Z6 |
Series |
Shaft End Finished Product |
Type |
SA |
Screw Shaft Diameter [mm] |
32 |
Lead [mm] |
6 |
Accuracy Grade |
C5 |
Ball Diameter [mm] |
3.969 |
Valid Number of Laps |
2.5×2 |
Nut Length [mm] |
63 |
Maximum travel [mm] |
1094 |
Screw Length (Lt) [mm] |
1165 |
Screw Length (La) [mm] |
1200 |
Screw Length (L) [mm] |
1357 |
Weight [kg] |
8.5 |
Rated Dynamic Load [N] |
18300 |
Rated Static Load [N] |
34700 |
Maximum Speed [Fixed-Free] (min-1) |
2180 |
Drive Side Support Unit |
WBK25-01W(Square) WBK25-11(Round) |
Reverse Drive Side |
WBK25S-01W(Square) |

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