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W2521FA-4-C5T25 NSK Ball Return Tube Ball Screw Shaft End Finished Ball Screw

The NSK W2521FA-4-C5T25 is a high-precision ball screw with a finished shaft end and a flanged single nut, belonging to the FA type for industrial automation equipment.

The W2521FA-4-C5T25 ball screw features standard machined ends for easy installation and is suitable for automation equipment and precision linear drive systems requiring high speed response and smooth operation.

The main features of the W2521FA-4-C5T25 high-lead ball screw are as follows:

High positioning accuracy: C5 grade accuracy, precision ground for smooth operation.

Zero axial backlash: Achieved through interference ball preload (P-type), resulting in zero axial backlash, high rigidity, and suitability for bidirectional precision positioning.

Compact structure: Flange-type single nut design saves installation space.

Wide applicability: Designed specifically for industrial automation equipment (FA series), commonly found in CNC machine tools, industrial robots, automotive equipment, and precision manufacturing lines.

The NSK W2521FA-4-C5T25 ball screw is commonly used in:

CNC machine tools: feed axes of CNC machining centers, lathes, and milling machines.

Automated production lines: robotic arms and material handling robots.

Precision measuring instruments: coordinate measuring machines, etc.

Item

Specification

Model No.

W2521FA-4-C5T25

Series

Shaft End Finished Product

Type

FA

Screw Shaft Diameter [mm]

25

Lead [mm]

25

Accuracy Grade

C5

Ball Diameter [mm]

4.762

Valid Number of Laps

1.5×1

Gap Symbol

T

Circulation Method

Pipe Circulation

Nut Length [mm]

90

Maximum travel [mm]

2046

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]

19700

Maximum Speed [Fixed-Free] (min-1)

710

Drive Side Support Unit

WBK20-01A(Square)

WBK20-11(Round)

Reverse Drive Side

WBK20S-01(Square)

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