The Bosch Rexroth R166581420 FKS linear guide slider (Ball Runner Block) belongs to the BSHR ball guide system. KWD-020-FKS-C1-N-1 is the complete code for the parameters of the R166581420 slider. 20 represents the size specification, FKS indicates that the slider is flange-type with a short slider structure, C1 indicates a light preload level, and N indicates a standard accuracy level.
Key Features of Bosch Rexroth FKS Ball Sliders
The Rexroth FKS ball sliders feature a flange-type, wide-body, short design, offering flexible installation and a small footprint.
They feature a four-way equal load design, capable of simultaneously withstanding radial, anti-radial, and lateral loads. The four-point contact raceway structure of the balls provides high rigidity and excellent torque capacity.
They exhibit low operating friction, smooth movement, high positioning accuracy, good high-speed performance, and a long service life.
Multiple accuracy grades and preload levels are available to meet the high-precision, high-reliability linear guidance requirements of automated equipment, CNC machine tools, robots, and precision manufacturing equipment.
Rexroth R166581420 FKS ball bearing slides are mainly used in the following industries:
3C Electronics & Semiconductors: Dispensing, bonding, PCB inspection, precision slides for semiconductor transfer;
Laser & Woodworking Machinery: Small laser engraving, precision cutting, CNC woodworking equipment;
Non-standard Automation: Production line transfer mechanisms, small robotic arms, automated assembly modules;
New Energy Equipment: Lithium battery assembly, electrode processing, battery testing fixtures;
Packaging & Printing Equipment: Small cutting and label packaging feeding devices.
Item |
Specification |
Part Number |
R166581420 |
Ball Runner Type |
FKS |
Size |
20 |
Preload Class |
C1 |
Accuracy Class |
N |
Sealing |
SS – Standard Seal |
Ball Chain |
Without Ball Chain |
Guide Block Width [mm] |
63 |
Guide Block Length [mm] |
57.3 |
Guide Block Height [mm] |
25.35 |
Guide Block Height with Rail [mm] |
30 |
Mass [kg] |
0.30 |
Rated Dynamic Load [N] |
15400 |
Rated Static Load [N] |
16500 |
Rated Dynamic Torque Load [Nm] |
200 |
Rated Static Torque Load [Nm] |
210 |

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