100R Series

Tool 100Ri188LA

Small diameter roughers break. The forces on a 0.1875" tool running aggressive cuts want to snap carbide like a toothpick. The 100Ri188LA addresses this with TiAlSiN coating over a 4-flute chipbreaker geometry that distributes cutting forces across more contact points while managing heat buildup.

That coating matters here.
TiAlSiN forms a harder surface layer that resists the abrasive wear that kills small tools in steel, iron, titanium, and nickel alloys.
The 0.004" chamfer breaks the sharp corner that would otherwise chip under entry loads.
You get more predictable tool life instead of random failures mid-cut.
This is material removal, not finishing.
The chipbreaker geometry leaves a roughed surface by design.
Run your finishing pass separately.