Crossed roller bearings are thin-cross section bearings consisting of one inner ring, a two-part outer ring, cylindrical rollers, and separators. The rollers are alternately oriented at right angles to each other and kept apart by separators.

One bearing can sustain both radial and axial loads and also strong moments. Since the load capacity is high and they are both light and compact, they are commonly used in the rotating joints of robots.

Preloading the bearings increases rigidity and improves positioning accuracy.

Therefore, they are suitable for the support bearings of indexing mechanisms, rotary tables, etc. that are generally required to have high rigidity.

Sealed crossed roller bearings are prelubricated with lithium grease and can be used without maintenance.

Since the internal clearances in CHG crossed roller bearings are factory adjusted, they can be installed directly without trouble some shim adjustment. Simple mounting of bearings is possible since the outer ring parts are inseparable.