The most recent and growing family of inserts are square, helical shapes for improved economy and performance. These new square insert geometries combine the helical cutting edge on all four edges with an additional wiper on one of the extremities to perform for 90′ sidewall milling operations.

The typical insert designs have helical edges at the central part of each cutting edge, while sloping downward or upwardly in the wiper area. The unique design with the wiper insures high surface quality and stable machining. The upper surface is designed with very positive rake angles to reduce forces and improve chip flow. The inserts are clamped with a relatively large axial angle on endmills, shoulder cutters, slotting cutters and facemills and also can be clamped on milling cutters with 45′ for chamfering operations and drill mill cutters.

The unique features of the square insert design offer the possibility of using each of the four corners for machining flat, straight and perpendicular shoulders. The helical-cutting edge inserts can be mounted on facemills, T-slotting and slotting cutters, endmills and heavy-duty cutters. The heavy-duty cutters with multiple inserts have full-effective helical cutting edges, providing the possibility to machine at unlimited depths.