1.  Grinding both ends → Rough grinding raceway

2.  Demagnetization cleaning → Rough grinding inner diameter

3.  Demagnetization cleaning → Rough grinding edge

4.  Demagnetization cleaning→Fine grinding raceway

5.  Demagnetization cleaning → Precision inner diameter

6.  Demagnetization cleaning→Fine grinding edge

7. Demagnetization cleaning→Super clean edge→Super clean raceway