... .Types:319series,329series,310series,,320series,330series,322series,332series etc.2.Material:Gcr15-China,(AISI)52100-USA,(DIN)100CR6-Germany3.Retainer:steel ... combustion engines, gas turbines, machine tool spindles, deceleration devices, and material handling machinery and various types of industrial machinery.7.Packing: individual ...