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To determine and set the mill to the needed
cutting RPM:
1.
Figure 15
NOTICE
Failure to follow RPM and Feed Rate
Guidelines will shorten cutter life and give
poor workpiece results and may threaten
operator safety from ejected parts or broken
tools.
Choosing Spindle
RPM
Never shift gears while mill/drill or mill is
running; otherwise, the gear teeth will be
chipped or broken.
NOTICE
Cutting Speeds for High Speed Steel
(HSS) cutting tools:
2.
3.
Note:You will only be able to get an approxi-
mate RPM value with the gearbox range and
reduction levers.
4.
Figure 15.
Note: Double the cutting speed for carbide
cutting tools. These values are a guideline
only. Refer to the MACHINERY'S HANDBOOK
for more detailed information.