Seco 02787026 TNMG331-FF2 TP1030 Cermet Turning Insert

Product Description

The SECO 02787026 is a TNMG331-FF2 series cermet turning insert with a TP1030 manufacturer grade and a multilayer TiAlSiN PVD coating. It features a triangular shape with a 60-degree included angle, providing 6 usable cutting edges per insert. The inscribed circle measures 0.375 inches, insert thickness is 0.1874 inches, and the corner radius is 0.0157 inches. The FF2 chip breaker geometry and honed cutting edge style suit finishing and semi-finishing passes on steel and stainless steel. This insert is installed and changed out by machinists and CNC tooling technicians in production turning environments.

This insert is suited for external and internal turning operations including facing, boring, and back turning on steel and stainless steel workpieces. It carries ISO material grade codes P10 and P15, making it well-matched to low-to-medium alloy steels and austenitic stainless steels. The neutral hand orientation and negative rake geometry allow use in standard TNMG-compatible toolholders across both manual and CNC lathes. The maximum depth of cut reaches 0.6339 inches, supporting a range of roughing to light finishing passes within the intended material grades.

Key Features

• Cermet substrate with multilayer TiAlSiN PVD coating for extended tool life on steel and stainless steel
• FF2 chip breaker geometry optimized for controlled chip evacuation during finishing passes
• 6 cutting edges per insert reduces per-edge tooling cost
• Negative rake, neutral hand — fits standard TNMG toolholder configurations
• Compatible with clamp, pin, and lever lock insert-holding methods
• Meets ANSI and ISO standards; ISO code TNMG160404-FF2

Compatibility

Designed as a direct-fit replacement for TNMG331-FF2 style toolholders using clamp, pin, or lever lock holding methods. ISO equivalent is TNMG160404-FF2. Suitable for applications involving steel (P10, P15) and stainless steel workpiece materials. No specific machine or toolholder model compatibility was provided in the product data.

Installation Notes

Insert changes should be performed with the machine powered down and the spindle fully stopped. Use the appropriate torque wrench and clamping hardware specified by the toolholder manufacturer — do not overtighten the clamping screw, as this can crack the insert or damage the seat. Inspect the insert pocket and seating surface for chips or debris before seating a new insert. Index to a fresh cutting edge before replacing the insert entirely to maximize tool life.