240 Series

Tool 240i250C

Quarter-inch tooling in aluminum sees the worst of both worlds. Small diameter limits rigidity while high surface speeds demand aggressive feeds that can overwhelm chip evacuation. The 240i250C addresses this with wide flute gullets that prioritize chip removal over web thickness.

TiB₂ coating reduces aluminum adhesion at the cutting edge, maintaining surface finish as speeds climb beyond what uncoated carbide can sustain.
The R0.004" corner radius strengthens the edge against microfracture while blending smoothly into sidewall cuts.
This geometry works best in aluminum, copper, and plastics where material removal rate is limited by heat generation rather than cutting forces.
Two flutes balance rigidity with evacuation in applications where spindle speeds run high.
The 0.238" neck diameter maintains strength in deeper pocket work.