930 Series

Tool 931i2418C

Workholding dovetails see cyclic loading that can crack sharp corners. The 931i2418C addresses this with a 0.01" corner radius at the dovetail root, reducing stress concentration where fatigue failures typically initiate.

Three flutes provide smooth cutting in steel and aluminum while maintaining rigidity on the 0.1969" neck diameter.
The 45-degree included angle matches standard workholding specifications.
TiB₂ coating extends tool life in steel applications by reducing built-up edge formation and providing thermal barrier protection during interrupted cuts.
The corner radius also strengthens the cutting edge compared to sharp corner designs.
This matters when cutting through scale, interrupted surfaces, or work-hardened materials where edge chipping can occur.
Tool runs true at high spindle speeds in steel and aluminum.