... plain bearing, always for a ball-and-socket joint; Most spherical plain bearing consists of a plain bearing and ball bushing inside a lined, clydrical ... steel, Carbon steel, Stainless steel...etc; Typically, metal balls and liners are made of steel, bronze or iron; Non- ... metallic balls and liners are usually made of plastic, nylon, PTFE...etc;3. Bearing Type1): Rod ends bearing(ball joint) including GE ...