... American, (DIN)100Cr6-Germany; Stainless Steel, 2) Types Specialized: With ZZ, 2RS, OPEN available; Non-standard Bearing; 3) Radial Internal ... structure, cylindrical bore and conical bore, retainers' material always with armor plate, synthetic resin and so on. The features of such ... bore these two structures are usually with the retainer of the material of armor plate, synthetic resin and so on. ...