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Cutting Speed

Rotacut Speed Chart

Cutting speed is the term used to express the velocity of the tool (SFM = surface feet per minute) as it cuts a specific material. Each material has an optimum range for its machinability with each cutting tool material (i.e. H.S.S. vs. carbide, etc.)

Use the following formula to compute a tool's cutting speed:

Where:

- SFM = surface feet/minute
- D= tool diameter in inches
- RPM = revolutions/minute

Rotabroach Cutter

SFM = .262 x diameter x RPM




Conventional Drill

SFM = .262 x diameter x RPM

Rotabroach Cutters provide a nearly constant tooth pitch. This pitch provides consistent tool life patterns for the entire range of diameter sizes in terms of lineal inches (inches of drill penetration).


Suggested Cutting Speeds


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