... .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 ...