Some tips to Improve Surface Finish on Internal Grinding

1. Increase wheel speed

2. Reduce depth of cut of revolution

3. Reduce work speed (RPM)

4. Increase spark time/number of spark-out passes

5. Reduce the dress traverse speed during dressing

6. Reduce the depth per pass during dressing

7. Coolant delivery is important. Check and change the coolant filter regularly.

8. Check grinding spindle regularly to avoid run out and vibration.

Reference:

https://pm.mydigitalpublication.com/publication/?m=59269&i=687545&p=32