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.