Kennametal launches next-generation tangential shoulder mills

Kennametal has released the next generation of its Mill 4-12KT tangential shoulder mill, which is designed to produce high-quality surface finishes in nearly all steel and cast-iron applications.

“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 3.1mm are available, as well as medium and coarse pitch cutter bodies from 50 to 200mm in diameter (with through-coolant). Offering an axial depth of cut range from 0.5 to 12mm, 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.

For more information contact Kennametal South Africa on TEL: 011 748 9300 or visit