The thrust self-aligning roller bearing system is a separated type bearing, with spherical rollers and spherical race raceways, providing self-aligning performance. Due to its load line forming a certain angle with the bearing axis, this type of bearing can withstand both axial and radial loads simultaneously, and can be used in extremely heavy load situations with a relatively high allowable speed. Lubricating oil is generally used during use. Thrust self-aligning roller bearings are roughly the same as self-aligning roller bearings. The raceway surface of the seat ring is a spherical surface centered on a point consistent with the central axis of the bearing. The rollers of this type of bearing are spherical, therefore, they have automatic self-aligning function and are not very sensitive to coaxiality and shaft deflection.