Tungaloy Iso-EcoTurn Inserts Optimize Chip Control

Tungaloy has expanded its Iso-EcoTurn turning insert and toolholders system with GNMG inserts featuring a 70-degree nose angle and FNMG inserts featuring a 45-degree nose angle. This expansion covers a total of 39 additional inserts.

Conventional CNMG or DNMG turning inserts face challenges with chip jamming and re-cutting during profile turning or face turning processes in which the cutting takes place in one continuous path leading away from the work center.

The reduced nose angles of the GNMG and FNMG inserts contribute to lower cutting force, minimizing unpredictable tool failure and chatter during machining. Increased clearance on the cutting edge also allows better chip flow and reduced chip re-cutting issues when face turning walls.

Tungaloy’s GNMG and FNMG inserts include two chipbreaker styles: TM suits general purpose applications, while TSF is optimized for finish turning. The company offers these inserts in T9215 and T9225 CVD grades for steel turning, as well as the AH8015 PVD grade for high-temperature alloys.

As the central bodies of the GNMG and FNMG inserts have identical sizes and shapes to the CNMG and DNMG inserts, users can mount the new inserts to standard turning toolholders for CNMG or DNMG inserts.