Spherical plain bearings have an inner ring with a convex sphered outside surface and an outer ring with a correspondingly sphered but concave inner surface. In addition to its characteristics such as corrosive resistant, wear resistant, self-lubricating, self-alignment. It is able to accommodate heavy radial loads, axial loads or combined loads, and shock loads. It is intended for low speed oscillating movement, tilting and swivel motions.。