Hertel HTCNMA432420CD Pcd Turning Insert 1/2 in Ic

Product Description

The HERTEL HTCNMA432420CD is a Polycrystalline Diamond (PCD) turning insert designed for precision single-point turning operations on CNC lathes and turning centers. Built to the CNMA insert standard, it features a 1/2 inch inscribed circle, a 3/16 inch insert thickness, and a 1/32 inch corner radius. The HT420CD grade uses an uncoated PCD substrate, which delivers exceptional hardness and wear resistance for machining non-ferrous metals, composites, and abrasive materials. Machinists and toolroom technicians working with aluminum alloys, copper, carbon fiber, and similar workpiece materials specify this insert for high-speed finishing and semi-finishing passes where tool life and surface finish consistency are critical.

This insert is suited for light to moderate turning applications in production and job-shop environments. The diamond insert shape (Shape Code C) with a neutral clearance angle (Clearance Code N) and medium tolerance (Tolerance Code M) makes it a practical choice for general turning on Swiss-type machines, gang-tooling setups, and conventional CNC lathes. The chip breaker designation A and insert size code 432 align with common CNMA toolholder systems. It is intended for use by machinists and CNC operators maintaining tight dimensional tolerances on non-ferrous and composite parts.

Key Features

• Polycrystalline Diamond (PCD) insert material for superior hardness and abrasion resistance on non-ferrous workpieces
• Uncoated finish preserves sharp cutting edge geometry without coating buildup
• 1/2 inch inscribed circle (12.70 mm) fits standard CNMA toolholder pockets
• 1/32 inch (0.0313 inch) corner radius balances edge strength with surface finish performance
• Clamp and pin holding method provides positive insert retention under interrupted or continuous cuts
• Material Grade C2 suitable for non-ferrous and non-metallic workpiece materials

Compatibility

Designed as an OEM-style replacement or direct-fit insert for CNMA-style toolholders accepting a size 432 insert with clamp and pin holding. Verify toolholder pocket geometry and clamping style before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Always index or replace inserts with the machine spindle stopped and all axes at a safe home position. Use the correct torque driver or clamp screw for the toolholder manufacturer's specified clamping torque to avoid cracking the PCD substrate. PCD inserts are brittle against impact — avoid interrupted cuts on ferrous or hardened materials, as these applications can fracture the cutting edge.