... in carbon steel, alloy steel and stainless steel, aluminum alloy,Structure of steel to steel, steel to liner or steel to ... ball, body+liner(PTFE/DU)+ball, body+injection+ball, body+radial spherical plain bearingMaterial specification:Ball (inner ring): bearing steel, ... plastic of PA and PTFERod body: carbon steel, alloy steel, stainless steel, aluminum alloySurface treatment: polish, zinc plated, ...