... Vibration Level: V1, V2, V3 Typical applications: Electric motors, OEM1)Drawn cup needle roller bearing: HK, BK, HK RS, HK 2RS, BK RS, F, FH ... 2. Materials: GCr15, GCr15SiMn, G20Cr2Ni4A etc Ring and cages: Chrome bearing steel Balls: Chrome steel or carbon structural steel Cover: Rubber ... 9000/9001/9004/19011: 2000 ISO 14000/14001, OEM available Needle roller bearing (NAVP4912)