Hertel 1000272 TNMG332R HC335 Turning Insert Carbide

Product Description

The HERTEL 1000272 is a TNMG332R-style indexable turning insert manufactured from solid carbide and coated via CVD with a three-layer TiC, TiCN, and TiN stack under the HC335 grade designation. It features a 60-degree triangular shape with a neutral hand orientation and a 1/32-inch corner radius, making it suitable for general-purpose external and internal turning operations. The insert measures 0.65 inches in length with a 3/8-inch inscribed circle and a 3/16-inch thickness. It is held in place by clamp or pin toolholders and is installed by machinists and CNC lathe operators in production and job-shop environments.

This insert is intended for turning operations on steel and stainless steel workpiece materials, corresponding to ISO P and M material groups and ANSI C5 and C6 material grades. The G-style chip breaker geometry supports controlled chip formation across a range of feed rates and depths of cut typical in finish and semi-finish turning passes. It fits standard TNMG-style toolholders commonly used on manual lathes and CNC turning centers in both production and maintenance machining environments.

Key Features

• HC335 grade solid carbide substrate with CVD-applied TiC, TiCN, and TiN multilayer coating
• TNMG332 insert style with 60-degree triangular shape and neutral hand orientation
• 1/32-inch (0.0313 inch) corner radius for semi-finish and finish turning applications
• G-style chip breaker for controlled chip evacuation on steel and stainless workpieces
• Compatible with clamp and pin holding methods in standard TNMG toolholders
• Clearance code N and tolerance code M for consistent, repeatable seating

Compatibility

Designed as an OEM-style replacement and standard indexable insert for TNMG-style toolholders accepting 332-size triangle inserts with a 0.150-inch hole diameter and clamp or pin holding methods.

Installation Notes

Installation is performed by machinists using standard insert clamp screws or retaining pins appropriate for the toolholder design. Ensure the machine spindle is fully stopped and the turret is locked before indexing or replacing inserts. Use proper insert handling practices to avoid edge chipping prior to installation. Verify toolholder pocket seating surfaces are clean and free of chips before securing the insert.