Grizzly G4791 Owner's Manual page 44

Setting Lathe Speed
Calculating Correct Spindle Speed
1. Figure 54
Note: Cutting speeds are expressed in sur-
face feet cut per minute (SFM).
Recommended Cutting Speeds
Rough Cuts
Note: These values are based on HSS cutting
tools. For carbide cutting tools, double the aver-
age speed. These values are a guideline only.
Refer to the MACHINERY'S HANDBOOK for
more detailed information.
Figure 54.
2.
3.
Finish Cuts
Note: For this step, you will need to average
out the diameters or work with the finished
diameter.
Cutting Speed (SFM) x 4
Spindle Speed =
Diameter of Cut
Example A
Step 1:
Step 2:
Result:
Example B
Step 1:
Step 2:
Step 3:
Result: