The inner and outer rings of the HRW bearings are designed with an integrated structure. Due to the double-row rolling surface and the use of small-diameter rollers, the number of rollers is about 5 times that of the conventional cross roller ring RU type* (RW 228 type). While maintaining compactness, improving rigidity and precision, the torque is also reduced. Since the size and number of the mounting bolt holes are designed optimally, the deformation of the rolling surface caused by installation can be reduced, thereby obtaining stable rotation performance. The HRW bearing is a precision bearing with a double-row cylindrical roller structure. The rolling elements are distributed face to face in the two-row raceway at a pressure angle of 45°, and the angle between the two rows of rolling elements is 90 degrees vertical. The thickness of the bearing makes the bearing have better overall rigidity and ring strength, and it is not easily affected by the mating parts during installation and is easier to install. The bearing can be installed in applications with high rigidity requirements, such as turntables and milling heads.