The NSK W2015FA-2-C5T20 is a standard ball screw assembly in the FA series, with a nominal diameter of 20 mm, a lead of 20 mm, and a precision grade of C5. The W2015FA-2-C5T20 precision ball screw employs an external circulation ball screw structure and a light preload (micro-backlash) design, effectively reducing backlash and improving axial rigidity and positioning stability. Both ends of the ball screw are standard-machined for easy installation and compatibility, making it suitable for precision transmission and automated linear motion systems.
Features of the W2015FA-2-C5T20 Shaft-End Finished Ball Screw:
**Conduit-Type External Circulation:** Utilizing a conduit-type external circulation ball screw system, the balls circulate smoothly within a conduit outside the nut, resulting in a smoother path.
**W2015FA-2-C5T20 Shaft-End Finished Ball Screw Features:**
**Conduit-Type External Circulation:** Employs a conduit-type external circulation ball screw system, allowing the balls to circulate smoothly within a conduit outside the nut. Precise Clearance Control: Axial clearance is only approximately 0.005mm, balancing high-precision positioning and smooth movement, avoiding overheating and wear caused by overload.
Compact Structure: The FA series nut has a 30% smaller outer diameter than traditional products, adapting to confined installation spaces and particularly suitable for small automated equipment.
Long Life Design: High-quality bearing steel material + precision heat treatment process, combined with LR3 grease, ensures long-term stable operation.
Application Industries of NSK 20×20 Specification FA Type Shaft-End Finished Ball Screws:
Semiconductor Manufacturing
Electronic Equipment
Medical Instruments
Precision Measurement
Automation Equipment
Item |
Specification |
Model No. |
W2015FA-2-C5T20 |
Series |
Shaft End Finished Product |
Type |
FA |
Screw Shaft Diameter [mm] |
20 |
Lead [mm] |
20 |
Accuracy Grade |
C5 |
Ball Diameter [mm] |
3.969 |
Valid Number of Laps |
1.5×1 |
Gap Symbol |
T |
Circulation Method |
Pipe Circulation |
Nut Length [mm] |
63 |
Maximum travel [mm] |
1441 |
Screw Length (Lt) [mm] |
1510 |
Screw Length (La) [mm] |
1535 |
Screw Length (L) [mm] |
1620 |
Weight [kg] |
1.6 |
Rated Dynamic Load [N] |
8190 |
Rated Static Load [N] |
13100 |
Maximum Speed [Fixed-Free] (min-1) |
1150 |
Drive Side Support Unit |
WBK15-01A(Square) WBK15-11(Round) |
Reverse Drive Side |
WBK15S-01(Square) |

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