Lathe RPM for Roughing or
Finishing
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- I found this chart on another website. It is
just a suggestion.
- You may want to turn at a different speed. The
formulas are below.
Turning Diameter (inches) |
Roughing RPM |
Finishing RPM |
| 2 |
1500 |
3000 |
| 4 |
800 |
1600 |
| 6 |
500 |
1000 |
| 8 |
400 |
800 |
| 10 |
300 |
600 |
| 12 |
250 |
500 |
| 14 |
225 |
450 |
| 16 |
200 |
400 |
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- The roughing surface speed is 160 inches/second.
- The finishing surface speed is 320 inches/second.
-
- The formulas are: Roughing RPM = 160/(PI*Diameter)*60
-
Finishing RPM = 320/(PI*Diameter)*60
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