FAG High Precision Cylindrical Roller Bearing (NU 203ECP) The cylindrical roller bearings are very rigid, can support high radial loads and, due to the cage, are suitable for higher speeds than the full complement designs. Bearings with suffix E have a larger roller set and are thus designed for extremely high load carrying capacity. 1)Material: Gcr15, Gcr15SiMn 2)Cage Material: Brass, steel 3)Quality standard: ISO9001 4)Noise standard: Z1, Z2, Z3, Z4 5)Vibration standard: