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Speed & Feed

Cutting speed → spindle RPM

Units

Tool diameter

Cutting speed (SFM)

Spindle speed

—

Feed rate

Chip load (per tooth)

Flutes / teeth

Feed rate

—

Feed rate = RPM × chip load × flutes (units follow the chip-load units — in/min or mm/min).

Starting-point speeds/feeds — always defer to the tooling manufacturer's data and the machine. A helper, not a substitute for engineering judgment.