Number of Row Single row Material GCr15,GCr15SiMn,AISISUS440C,ZrO2,SisN4 Cage Material Steel cage ,brass cage, stainless steel cage, nylon cage Clearance C1, C2, C0, C3, etc. (As the clients' requirement.) Noise Z1,Z2,Z3 Vibration V1,V2,V3 Lubrication Oil, grease Structure Deep groove Type ball Model Number 6000 series, 6200 series, 6300 series,etc Brand Name RCR or according to customer’s requirement Bore Size(mm) 2-360 Outside Diameter(mm) 5-540 Precision Rating ABEC-1, ABEC-3,ABEC-5, ABEC-7 Seals Type Open, Sealed, Shielded Production process: 1. Abrasive machining of steel pipe; 2. The inner & outer ring grinding; 3. The precision work of inner ring & outer ring 4. Bearing cleaning; 5. The Assembly of inner ring , outer ring , bearing balls & cage, etc. 6. Bearing inspection( precison, noise & vibration levels). 7. Packing: in plastic tube, then in carton & pallet or in color single box, then in carton & pallet, or as the customers' request.