Spherical roller bearings have double row rollers, the outer ring has a shared spherical raceway, and the inner ring has two raceways, which are inclined at an angle relative to the bearing axis. This ingenious structure makes it self-aligning, so it is not easily affected by the angle between the shaft and the housing seat on errors or shaft bending. The spherical roller bearing is a rolling bearing that allows rotation, with low friction and high impact resistance. , Anti-vibration, mainly bear large radial load, can also bear appropriate axial load, etc.