THK RB Series Cross Roller Rings

The THK RB Series cross roller rings are high-precision rotary bearings designed for applications requiring high rigidity, compact size, and smooth rotational accuracy. Cylindrical rollers arranged in a cross pattern enable the bearing to simultaneously support radial, axial, and moment loads within a single unit, making it well suited for precision rotary tables, robotic joints, medical equipment, and compact indexing systems.

The integrated inner and outer ring structure simplifies mounting and reduces overall assembly size while maintaining excellent rotational stability and load capacity. Available models cover a range of sizes and preload configurations, with double seal (UU) options for contamination protection and P5 and P6 preload grades for applications requiring tighter running accuracy and reduced play.