CRBH series(Integrated Inner/Outer Ring Type),  this Model is a compact type of model RU with extremely thin outer and inner rings without mounting holes are provided, the model require a presser flange or Housing. In addition, because it has an integrated inner/outer ring structure and is equipped with washers, its performance is minimally affected by the Mounting procedure, ensuring stable rotation accuracy and torque. this Model can be used for both inner-ring rotation and outer-ring rotation and the Requirement of miniaturized dimension.