RU series crossed roller  bearing  are based on cylindrical roller being arranged vertically to each other in a 900 V groove rolling surface through the isolation piece, so cross roller bearing can withstand load from multi-direction, like: Radial, axial and torque. Since the cross roller ring achieves high rigidity and the precision can reach up to P2, P4, despite the mininum possible dimensions of the inner and outer rings, it is optimal for applications such as industrial robot, rotation of the machining center, precision rotary worktable, medical machine, calculator, military industry, IC manufacturing devices and other equipments.