Tool 190i375M030A

Corner chipping in hardened steel finishing cuts typically comes from sharp edges meeting interrupted surfaces. The R0.004" corner radius on this 0.375" diameter end mill addresses that vulnerability while maintaining the crisp edges needed for precision work.

Nine flutes distribute cutting forces across more contact points, reducing individual tooth loading.
Each flute takes approximately 0.0001" per revolution at appropriate feeds, which is what generates the surface finish.
The TiAlSiN coating adds oxidation resistance during the high-speed operations this geometry requires.
Built for steels, iron, titanium, and nickel alloys where dimensional accuracy and surface finish matter more than material removal rates.
The corner radius extends tool life in interrupted cuts without compromising wall finish quality.
Expects high spindle speeds and rigid workholding.