... a ball-and-socket joint; Most spherical plain bearing consists of a plain bearing and ball bushing inside a lined, ... Stainless steel...etc; Typically, metal balls and liners are made of steel, bronze or iron; Non-metallic balls and liners are ... bronze, iron...etc;5. Applications: Oil cylinders, Autos, Water machinery, Automatic equipment, Machical tooling...etc;6. Packages: Cartons and pallets