The NSK W2803SA-4Z-C5Z6 ball screw is a small-lead precision ball screw with an outer diameter of 28mm and a lead of 6mm. It is 499mm in length and features C5-grade precision and preload design to achieve zero axial backlash.
The W2803SA-4Z-C5Z6 shaft-end finished flange type ball screw has a compact structure and high load-bearing capacity, making it suitable for linear transmission applications in automated equipment, CNC machinery, and other applications requiring a balance between speed and rigidity.
Key Features of W2803SA-4Z-C5Z6 Precision Ball Screw
High Precision and High Rigidity: C5 grade precision ensures excellent axial clearance and positioning accuracy.
SA Series Advantages: Suitable for machine tools, offering reliable transmission efficiency and a long service life.
Preload: Employs precision preload technology to reduce errors caused by thermal expansion and enhance positioning rigidity.
Common Applications of W2803SA-4Z-C5Z6 Precision Ball Screw
CNC Machine Tools
Industrial Robots
Precision Conveying Machinery
Electronic Manufacturing Equipment
Item |
Specification |
Model No. |
W2803SA-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] |
265 |
Screw Length (Lt) [mm] |
370 |
Screw Length (La) [mm] |
400 |
Screw Length (L) [mm] |
499 |
Weight [kg] |
3.4 |
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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