100 Series

Tool 100i500M040A

Heat buildup kills consistency before you even notice the wear. The 100i500M040A addresses this with TiAlSiN coating that handles the thermal cycling in steel and titanium without flaking or building up material on the cutting edge.

Four flutes keep chip load balanced across the 0.5" diameter, which matters more in sustained production runs than initial surface finish numbers.
The R0.04" corner radius strengthens the cutting edge just enough to resist microchipping in interrupted cuts while maintaining sharp geometry for clean entry.
In slotting operations on 4140 or 316 stainless, that thermal stability translates to consistent chip formation from first part to last.
The coating lets you maintain feed rates without the gradual degradation that forces mid-run adjustments.