The NSK W2807SA-4Z-C5Z6 is a finished ball screw with a shaft diameter of 28mm and a lead of 6mm. It features a ZFT flange nut, Z preload structure with zero axial backlash, and a C5 precision rating. It is suitable for conventional precision positioning applications such as CNC machine tools, automated equipment, semiconductors, and medical instruments.
Features of W2807SA-4Z-C5Z6 High-Quality Ball Screws:
High-Precision Transmission: Utilizing C5 precision grade, it achieves high repeatability and is suitable for precision machining equipment.
High-Efficiency Design: Low ball circulation friction results in significantly higher transmission efficiency than traditional sliding screws, reducing drive energy consumption.
High-Rigidity Structure: The SA type structure provides excellent axial rigidity, capable of withstanding high loads and improving equipment machining stability.
Low-Noise Operation: Optimized ball circulation method ensures smoother and quieter operation.
Standardized Installation: A-Series standardized shaft end design facilitates installation with support units and servo systems.
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. |
W2807SA-4Z-C5Z6 |
Series |
Shaft End Finished Product |
Type |
SA |
Screw Shaft Diameter [mm] |
28 |
Lead [mm] |
6 |
Accuracy Grade |
C5 |
Ball Diameter [mm] |
3.175 |
Valid Number of Laps |
2.5×2 |
Nut Length [mm] |
99 |
Maximum travel [mm] |
659 |
Screw Length (Lt) [mm] |
758 |
Screw Length (La) [mm] |
800 |
Screw Length (L) [mm] |
933 |
Weight [kg] |
5.3 |
Rated Dynamic Load [N] |
20600 |
Rated Static Load [N] |
48700 |
Maximum Speed [Fixed-Free] (min-1) |
2500 |
Drive Side Support Unit |
WBK20-01(Square) WBK20-11(Round) |
Reverse Drive Side |
WBK20S-01(Square) |

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