... radial spherical plain bearing, always for a ball-and-socket joint; Most spherical plain bearing consists of a plain bearing and ... 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,GEG,GK,GF,GIHO...series2): Radial spherical plain ...