100R Series

Tool 100Ri156A

Small diameter roughers snap. They can't handle the loads that come with aggressive material removal, especially in harder alloys where cutting forces spike. The 100Ri156A addresses this with a 0.1563" diameter built around chipbreaker geometry that reduces cutting forces by fragmenting chips before they can pack or pull heat into the cut.

The TiAlSiN coating adds thermal barrier protection where it matters most.
When you're pushing feed rates in steel, iron, titanium, and nickel alloys, that aluminum content helps the tool shed heat while the silicon nitride base maintains hardness.
The 0.004" chamfer strengthens the cutting edge against micro-chipping that kills small tools in interrupted cuts.
Four flutes give you the surface speed you need without overloading the spindle.
This isn't a finisher.
It's for hogging material in tight spaces.