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Failure to follow cutting speed guidelines
when setting spindle speed may threaten
operator and bystander safety with ejected
parts or broken tools, and will put undue
strain on moving parts, shorten tool life,
and create poor workpiece results.
Calculating Spindle
Speed for Milling
Figure 29
To calculate the needed spindle speed in
RPM:
1. Figure 29
2.
3.
Cutting Speeds for High Speed Steel (HSS)
Cutting Tools
Note:
MACHINERY'S HANDBOOK
Figure 29.
Figure 29
MACHINERY'S HANDBOOK
4. Speed Changes
5.