100 Series

Tool 100i313S030A

Small diameter work in harder alloys puts stress on the cutting edge. The 100i313S030A handles that stress through geometry and coating designed to work together in steel, iron, titanium, and nickel alloys.

Four flutes keep chip load consistent even when spindle speeds climb to compensate for the smaller diameter.
The TiAlSiN coating adds a thermal barrier that matters more at these higher surface speeds.
It keeps the carbide substrate cooler when heat buildup would otherwise accelerate wear.
That thermal protection extends tool life in the interrupted cuts and tight radii where 5/16" end mills typically work.
The R0.03" corner radius strengthens the cutting edge without compromising corner definition.
In profiling operations on steel, that radius prevents the micro-chipping that kills small tools early.