Hertel 2SHDNGA431630BN Turning Insert Pcbn Diamond

Product Description

The HERTEL 2SHDNGA431630BN is a diamond-shaped turning insert made from uncoated Polycrystalline Cubic Boron Nitride (PCBN), grade HT630BN. It features a 55-degree included angle, a 0.5-inch inscribed circle, and a 1/64-inch (0.0156-inch) corner radius. The insert carries a 3/16-inch thickness and conforms to DNGA style geometry with a G tolerance code and N clearance code. Designed for precision turning operations, it is held in place using a clamp and pin method. Machinists and toolroom operators use this insert in CNC turning centers and manual lathes where hardened ferrous materials and superalloys demand the cutting performance that PCBN tooling provides.

This insert is suited for finish and semi-finish turning of hardened steels, cast irons, and other hard-to-machine materials where carbide tooling reaches its performance limits. The DNGA insert style fits standard negative-rake toolholders commonly used in production turning environments. Its uncoated PCBN construction in grade HT630BN makes it appropriate for dry or minimal-lubrication hard-turning applications typical in aerospace, automotive, and precision-machining shops.

Key Features

• Uncoated Polycrystalline Cubic Boron Nitride (PCBN) construction, grade HT630BN
• 55-degree diamond insert shape (Shape Code D) for versatile turning geometry
• 0.5-inch inscribed circle with 3/16-inch insert thickness
• 1/64-inch corner radius (0.0156 inches) for controlled surface finish
• G tolerance and N clearance codes for consistent dimensional accuracy
• Clamp and pin holding method compatible with standard DNGA negative-rake toolholders

Compatibility

Designed as a direct-fit replacement insert for standard DNGA-style negative-rake turning toolholders accepting a 0.5-inch inscribed circle, 55-degree diamond insert. Verify toolholder seat geometry and insert size code 431 compatibility before installation.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Power down and lock out the machine spindle before seating or replacing any insert. Use the appropriate torx or hex key to secure the clamp and pin holding mechanism to the toolholder manufacturer's recommended procedure. Inspect the toolholder pocket and seating surface for wear or debris before installing a new insert to ensure proper contact and avoid premature edge failure.