Spherical roller bearings have two rows of rollers, which mainly bear radial loads and can also bear axial loads in any direction. It has high radial load capacity and is especially suitable for working under heavy load or vibration load, but it cannot bear pure axial load. The outer ring raceway of this type of bearing is spherical, so its alignment performance is good and it can compensate for coaxiality errors. There are two rows of symmetrical spherical rollers. The outer ring has a common spherical raceway. The inner ring has two raceways that are inclined at an angle to the bearing axis. It has good alignment performance. When the shaft is bent due to force or the installation is not concentric, The bearing can still be used normally. The alignment performance varies with the bearing size series. Generally, the allowable alignment angle is 1 to 2.5 degrees. This type of bearing has a larger load capacity. In addition to being able to withstand radial loads, the bearings can also withstand Bidirectional axial load has good impact resistance. Generally speaking, the allowable operating speed of spherical roller bearings is lower.