Kyocera TSJ00790 Turning Insert DNMG431 TN60 Cermet

Product Description

The KYOCERA TSJ00790 is a DNMG431-style cermet turning insert rated for precision metal cutting in CNC and manual lathe applications. Manufactured to ISO and ANSI standards under the ISOI series, this insert features a 55-degree diamond shape, a negative rake geometry, and a TiCN plus NbC coating classification designated as TN60 grade. The inscribed circle measures 0.5 inches, insert length is 1.182 inches, and the corner radius is 0.0156 inches (1/64 inch). Four cutting edges are available per insert, making it a cost-effective option for shops running high-volume turning operations on ferrous materials.

This insert is suited for external turning, boring, and copying operations on steel and stainless steel workpieces. The TN60 cermet grade targets finishing to semi-finishing cuts, particularly in material grades P01, P10, and P20. It is held in place using a clamp and pin method, which is standard on DNMG-compatible toolholders. The neutral hand orientation allows use in both left- and right-hand setups depending on the toolholder configuration. Machinists and tool-and-die professionals in production and job-shop environments are the primary users of this insert style.

Key Features

• 55-degree diamond insert shape (Shape Code D) with negative rake for controlled chip formation on steel
• TN60 cermet grade with TiCN plus NbC coating system suited for P01, P10, and P20 material grades
• Four usable cutting edges per insert for extended tooling value
• Compatible with clamp and pin insert holding for secure seating under interrupted and continuous cuts
• Neutral hand orientation — fits left-hand and right-hand DNMG toolholders
• Multi-use application: external turning, boring, and copying operations

Compatibility

Designed for use in DNMG431-compatible toolholders meeting ANSI and ISO standards. Suitable for external turning, boring, and copying on steel (P01, P10, P20) and stainless steel workpieces. ISO code reference: DNMG150404. Industry standard number: DNMG431TN60.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before seating or replacing inserts. Ensure the toolholder pocket and insert seating surfaces are clean and free of chips before clamping. Use the manufacturer-specified clamp and pin hardware for this insert style to maintain proper seating and prevent insert movement during cutting.