... plain bearing:out ring+ball, out ring +two ring inserts+ball, out ring +liner(PTFE/DU)+ball, out ring +injection+ballRod end ... injection+ball, body+radial spherical plain bearingMaterial specification:Ball (inner ring): bearing steel, stainless steelLiner: DU liner (which was ... PTFE powder), PTFE liner (fabric with PTFE powder)Out ring: carbon steel, alloy steel, stainless steel, bronze alloyInjection ...