The Rexroth KWD-025-FKS-C1-N-1 R166521422 ball slide belongs to the FKS series. It is a flange-type, short, standard height design standard steel slide suitable for applications with limited longitudinal space. This slide has a specification of 25, C1 light preload, N standard precision, and an integrated ball chain to reduce noise.
Key Advantages and Features of KWD-025-FKS-C1-N-1 R166521422 Ball Slider
Compact Structure: The short slider design is particularly suitable for use in areas of machinery where longitudinal (axial) space is limited and long sliders cannot be accommodated.
Smooth and Low-Noise Operation: Rexroth's optimized ball circulation inlet geometry and ball chain design significantly reduce friction fluctuations and noise, resulting in extremely smooth operation.
High Interchangeability: This slider supports Rexroth's universal interchangeability design. Within the same precision class, the slider can be replaced individually at any time and can be combined with any Rexroth standard ball guide of the same specification, greatly simplifying warehousing and after-sales maintenance.
Due to its short length, short stroke, quiet operation with its built-in slider chain, and low resistance, the R166521422 flange-type ball slide is widely used in:
Precision semiconductor manufacturing and packaging equipment
Medical devices and testing instruments
Small CNC machine tools and lightweight multi-axis robots
3D printing and high-frequency, light-load workstation handling systems
Item |
Specification |
Part Number |
R166521422 |
Ball Runner Type |
FKS |
Size |
25 |
Preload Class |
C1 |
Accuracy Class |
N |
Sealing |
SS – Standard Seal |
Ball Chain |
With Ball Chain |
Guide Block Width [mm] |
70 |
Guide Block Length [mm] |
67.0 |
Guide Block Height [mm] |
29.90 |
Guide Block Height with Rail [mm] |
36 |
Mass [kg] |
0.50 |
Rated Dynamic Load [N] |
18500 |
Rated Static Load [N] |
19100 |
Rated Dynamic Torque Load [Nm] |
260 |
Rated Static Torque Load [Nm] |
270 |

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