Tool 190i500M030A

Surface finish requirements in hardened steel don't negotiate. The 190i500L006A handles finishing operations where Ra values matter more than material removal rates.

Nine flutes at half-inch diameter means each tooth engages lightly.
That minimal chip load is what creates the finish quality.
The R0.006" corner radius strengthens the cutting edge without compromising surface texture.
Prevents the micro-chipping that shows up under magnification.
TiAlSiN coating handles the heat buildup from high RPM finishing passes.
The aluminum content in the coating chemistry manages temperatures better than standard TiN when you're spinning at finishing speeds.
Works across steel, iron, titanium, and nickel alloys where surface integrity is critical.
Needs spindle speed and rigid fixturing.