The cylindrical rollers of the HRAU series of uniform cross-section thin-walled cross roller bearings are arranged crosswise on the V-shaped raceway, and the rollers are separated by isolation blocks. This cross-arranged roller structure allows a single bearing to withstand various loads such as axial load, radial load and overturning moment. In addition, since the inner and outer rings are both integral structures, they can be used for inner ring rotation or outer ring rotation. Since the outer dimensions are minimized to the maximum, and the bearings have high rigidity, rotation accuracy and composite load-bearing capacity, they are most suitable for the joints or rotating parts of industrial robots, direct drive motors, medical equipment, measuring instruments and other fields.