The REXROTH R166521322 is a 25mm flange-type, short, standard-height steel ball slide block, model KWD-025-FKS-C1-H-1. It features C1 light preload and H-class high precision, and is equipped with a ball chain to reduce noise.
Bosch Rexroth FKS series ball slide blocks are important components in high-precision linear guide systems. SLH stands for flange-type, short, standard-height, suitable for applications with limited longitudinal space.
R166521322 (FKS) Ball Slider Key Features:
Flange-type short slider structure, suitable for applications with limited longitudinal space.
Four-row ball recirculation design, achieving high load capacity in radial, anti-radial, and lateral directions.
Low rolling friction coefficient, smooth operation, and high positioning accuracy and repeatability.
Four-direction equal load design, capable of simultaneously withstanding radial loads, lateral loads, and various moment loads.
High rigidity structure, suitable for high-speed, high-precision linear motion applications.
Equipped with a sealing and lubrication system, effectively preventing contaminant ingress and extending service life.
Low noise and smooth operation, suitable for automated equipment and precision machinery applications.
Rexroth R166521322 FKS ball slider main application industries:
3C electronic semiconductor: dispensing, laminating, PCB inspection, semiconductor transplanting precision slide;
Laser and woodworking machinery: small laser engraving, precision cutting, CNC woodworking equipment;
Non-standard automation: assembly line transplanting mechanism, small manipulator, automated assembly module;
New energy equipment: lithium battery assembly, pole piece processing, battery testing tooling;
Packaging and printing equipment: small cutting, label packaging and feeding devices.
Item |
Specification |
Part Number |
R166521322 |
Ball Runner Type |
FKS |
Size |
25 |
Preload Class |
C1 |
Accuracy Class |
H |
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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