“The Mill 4-12KT uses 15% lower cutting forces, an important consideration with today’s lighter duty, 40-taper machine tools,” says Tim Marshall, senior global product manager. “That allows customers to feed faster without putting additional stress on the spindle. And in long overhang situations, or where the part fixture is less than optimal, lower forces equate to less chatter, reduced edge chipping and smoother surface finishes.”

Tangentially mounted inserts with four cutting edges per insert deliver reduced tooling costs. Seven corner radii from 0.4 to 3.1 mm are available, as well as medium and coarse pitch cutter bodies from 50 to 200 mm in diameter (with through-coolant). Offering an axial depth of cut range from 0.5 to 12 mm, the tool covers most shoulder milling applications.

Multiple factors contribute to significant performance increases, even in aggressive cutting conditions. For instance, the tangential ‘on-edge’ insert design allows the insert to take advantage of the strength of the carbide thickness, more so than radially mounted inserts found on traditional milling cutters. In addition, a shallow pocket design permits the core size of the cutter body to be sufficiently robust.