Crossed roller bearings for harmonic reducers can be divided into separate outer rings and inner rings as a whole according to their application occasions. The outer ring and the inner ring are both integral. The rolling elements are cylindrical rollers, which are arranged vertically at 90° in the V-shaped raceway. Bearings with this structure can bear axial loads, radial loads, and overturning moments at the same time. The bearings have high precision, high rigidity, and composite load-carrying capacity.

There are four series of crossed roller bearings for harmonic reducers, CSG (CSF) series, CSD series, SHG (SHF) series, and SHD series, and the naming method adopts the name of the reducer.

CSG (CSF) type

The outer ring is divided into two pieces, and the inner ring is an integral structure. It does not require flanges and bearing seats during installation. It is mainly used in the output parts of CSG and CSF series reducers.

CSD type

Both the outer ring and the inner ring have integral structure, and the outer diameter is the same as the CSG type bearing, which has higher rigidity than the CSG type bearing, and is mainly used in the output part of the CSD series reducer.

SHG (SHF) type

Both the outer ring and the inner ring are integral structures, which have almost no impact on performance during installation, and can obtain stable rotation accuracy and torque. They are mainly used in the output parts of SHG and SHF series reducers.

SHD type

The outer ring and the inner ring are integral structures, and the height is lower than that of SHG, which saves the installation space of the reducer, and is mainly used in the output part of the SHD reducer.