FRB Bearings Crossed roller bearings introduction

Crossed roller bearings are compact bearings with their rollers alternately crossed at right angles to each other between inner and outer ring.The rollers make line-contact with raceway surfaces,and,therefore,elastic deformation due to bearing loads is very small.They can take loads from any driections at the same time such as radial,thrust and moment loads.It is possible to make your design compact comparing to the usage of taper roller bearing and combination of two ball bearings.These bearings are widely used in the rotatin parts of industrial robots,machine tools,medical equipment,etc.,which require compactness,high rigidity and high rotational accuracy.

Features of crossed roller bearing:
High load capacity and high rigidity
Taking load of any direction and moment at the same time
Compactness contributes your sapce saving
Wide mounting variations for your best choice.



Cross roller ring product overview
Model RU (Integrated Inner/Outer Ring Type)
Since the mounting holes are provided,this model does not require a presser flange or housing.In addition,beacause 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.

Model RB (Separable Outer Ring,Type for Inner Ring Rotation)
Being the basic model of the cross roller ring,its outer ring is separable while the inner ring is integrated with the main body.

This model is used in locations where the rotation accuracy of the inner ring is required.Major application include the index table swiveling unit of machine tools.

Model RE (Separable Inner Ring,Type for Outer Ring Rotation)
Having the same major dimensions as model RB,this model is used in locations where the rotation accuracy of the outer ring is required.

Model RA (Separable Outer Ring,Type for Inner Ring Rotation)
Based on model RB,this model is a light and compact type with the thinnest possible inner and outer rings.

It is optimal for locations where weight reduction and downsizing are required,such as the hand swiveling unit of robots and manipulators.

Model RA-C (Single-Split Type)
The major dimensions of this model are the same as that of model RA.Since
the outer ring is split at one point to increase the rigidity of the outer ring,this model can also be used for outer ring rotation.