Deep groove ball bearing 1.GCr15, GCr15SiMn 2.High precision,long life 3.Excellent service 4.ISO9001:2000 SERIESBORE DIAMETER(MM)VARIANT ... RS,2RS deep groove ball bearing1. with OPEN,Z,ZZ,RS,2RS,N,NR products2. wide varieties,inner packing:plastic ... friction, high limiting speed,high precision,5.robust in operation and normally require little maintenance6. dependable performance7. quality and ...