... best prices and good quality. Needle Roller Bearing Materials: GCr15 Vibration Level: V1, V2, ... Typical applications: Electric motors, OEM1)Drawn cup needle roller bearing: HK, BK, HK RS, HK 2RS, BK ... , GCr15SiMn, G20Cr2Ni4A etc Ring and cages: Chrome bearing steel Balls: Chrome steel or carbon structural steel ... Precision Level: P0, P6, P6x, P5, SP, P4, UP (ABEC1, ABEC3, ABEC5); 5. Noise Level: Z1, Z2 ...