183 Lapping and Polishing Process
to 45 N. These results indicate that the abrasive size and downforce have
little signicant effect on the MRR.
5. In polishing process, the roundness of rollers was reduced from 1.62 to
0.93 μm with the Al
2
O
3
abrasive size of 1000# and downforce of 35 N. In
addition, the roundness of roller is also decreased from 1.62 to 0.8 and
0.51 μm when the Al
2
O
3
abrasive sizes are 2000# and 4000#, respectively.
The best roundness values can be achieved about 0.51 μm when the Al
2
O
3
abrasive size and downforce are 4000# and 35 N.
REFERENCES
1. T.A. Harris, M.N. Kotzalas, Advanced Concepts of Bearing Technology: Rolling
Bearing Analysis. CRC Press (2006), Taylor & Francis Group.
2. S.M. ...