The new T4-12 Helical milling cutters feature larger, tangentially mounted inserts, each with four cutting edges. The cutters allow for increased depths of cut and higher machining parameters for roughing and semi-finishing of steels, cast irons and various difficult materials.
Tangential mounting reinforces insert stability, improves chip flow and provides unrestricted access to mounting screws, while multiple cutting edges help reduce tool cost per part. The curved-edge inserts are available in high-positive-rake geometries and corner radii up to 3.1 mm (0.125") in the front row to address a wide variety of workpiece requirements.
The cutters, in normal-pitch versions, perform slotting and contouring applications. Close-pitch versions do contouring only, with radial width-ofcut capability of 30 percent in full axial depth of cut.