This series employs the single-row crossed roller kinematic principle, with cylindrical rollers arranged alternately perpendicular to one another within a single raceway. This proven geometry enables the bearing to simultaneously support radial loads, bidirectional axial forces, and tilting moments. The line-contact between rollers and raceways delivers exceptional rigidity and load-carrying capacity relative to the bearing's overall dimensions, outperforming ball-based designs under combined loading conditions.

The defining characteristic of the  series is its external gear, which is integrally forged and machined on the outer ring's circumference. This external placement simplifies gear inspection, adjustment, and maintenance, as the gear teeth are fully accessible without disassembling surrounding structures. The external gear configuration also allows for larger pinion diameters and more flexible drive layouts, accommodating both right-angle and parallel shaft motor arrangements.