The bearing 22315MB is a very classic and widely used self-aligning roller bearing. Key features and advantages: 1. Automatic alignment function: The most important characteristic. The outer raceway of the bearing is spherical, which can compensate for axial misalignment caused by installation errors, shaft bending or housing deformation (typically allowing a 1.5° - 2.5° alignment angle). This significantly reduces edge stress and extends the bearing's lifespan. 2. Extremely high load capacity: