... Gcr15-China, (AISI) 52100-USA, 3).various of bearing Supply different kinds of good quality angular contact ball bearing,main features:1 ... Z, ZZ, RS, 2RS, RZ, ZNR, etc.4. Vibration and Noisy level: Z1, Z2, Z3 ZV1.ZV2.ZV3, 5. Precision ... . Packing: individual box single plastic bag, cartons and wooden cases8. Production range: standard and non-standad All kinds of high quality Angular Contact bearings