Spherical Bearing：There is a gap between the inner hole of the outer spherical bearing and the shaft, and the inner ring of the bearing is fixed on the shaft by the top wire, the eccentric sleeve or the adapter sleeve, and rotates together with the shaft. The seated bearing has a compact structure, convenient loading and unloading, perfect sealing, and is suitable for simple support. It is preferably applied to simple equipment and parts, such as agricultural machinery, transportation systems or construction machinery.