100R Series

Tool 100Ri188LFA

Small diameter roughing calls for balance. You need material removal but can't afford tool breakage on a 3/16" end mill. The 100Ri188LFA runs TiAlSiN coating over 4-flute geometry specifically because smaller tools generate more heat per unit volume of material removed.

That coating manages the thermal load while the chipbreaker geometry does what it always does.
Fragments chips before they pack the flutes or drag heat into the cut.
The 0.004" chamfer strengthens the cutting edge without sacrificing the aggressive bite you need for steel, iron, titanium, and nickel alloys.
At this diameter, you're often working in confined spaces or detailed features where setup rigidity matters more than raw horsepower.
The geometry handles chip evacuation.
The coating handles the heat.
You handle the feed rate.