Hertel 2SHCNGA432620BN Turning Insert Pcbn Diamond

Product Description

The HERTEL 2SHCNGA432620BN is a polycrystalline cubic boron nitride (PCBN) turning insert designed for precision metal cutting applications. It features an 80-degree diamond insert shape (shape code C) with a 1/2-inch inscribed circle and a 1/32-inch corner radius. The insert carries grade HT620BN and is supplied uncoated, making it suited for finishing and semi-finishing operations on hardened steels, cast iron, and superalloys. It is held using a clamp and pin method and conforms to CNGA geometry standards. Machinists and toolroom operators install this insert into compatible turning tool holders for high-speed, hard-part turning on CNC lathes and manual turning centers.

This insert is used in industrial machining environments, primarily for turning hardened ferrous materials and difficult-to-machine alloys where conventional carbide tooling reaches its performance limits. The PCBN composition provides the hardness and thermal stability needed for dry or near-dry cutting at elevated surface speeds. It is appropriate for both production shops and job shops running CNC turning operations that require consistent tool life and tight dimensional tolerances on hard workpieces.

Key Features

• Polycrystalline cubic boron nitride (PCBN) insert material for hard-part turning capability
• 80-degree diamond insert shape (CNGA geometry) with shape code C
• 1/2-inch inscribed circle (12.70 mm) for robust edge support
• 1/32-inch corner radius (0.0313 inches) for controlled surface finish
• Uncoated HT620BN grade — no coating delamination risk at high cutting temperatures
• Clamp and pin holding method for secure, repeatable seating in standard tool holders

Compatibility

Designed as an OEM-style replacement insert for turning tool holders accepting CNGA-style, 80-degree diamond inserts with a 1/2-inch inscribed circle and clamp-and-pin holding. Material grade C2 designation applies.

Installation Notes

Insert installation and replacement should be performed by a qualified machinist or toolroom technician. Power down and lock out the machine spindle before changing inserts. Seat the insert firmly against the tool holder pocket locating surfaces before tightening the clamp to ensure accurate edge positioning. Inspect the tool holder pocket for wear or debris prior to installing a new insert, as a damaged pocket will compromise edge geometry and part tolerance.