Lathe Turning Speed

Calculate safe lathe RPM for workpiece diameter.

Distance across a circle through its center.
in
Enter the balanced(1) unbalanced(0) value for this calculation.

Results

Roughing Speed:
Calculated speed or velocity.
-RPM
Finishing Speed:
Calculated speed or velocity.
-RPM
Maximum Safe Speed:
Maximum allowed or calculated value.
-RPM
Reference: Industry Standards. General rule: RPM = 6000-9000/diameter.