### Common Equations For Optimal Performance

mill diameter, D rotational speed RPM SFM 0.262 x RPM x D SFM estimated RPM x D 4 ROTATIONAL SPEED RPM peripheral cutting speed, SFM mill diameter, D RPM SFM 0.262 x D RPM estimated 4 x SFM D KEY SYMBOL ELEMENT UNIT OF MEASUREMENT HP CUTTING POWER INPUT horsepower SFM CUTTING SPEED surface feet per minute DOC DEPTH OF CUT ...

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