Hertel 8852073 Ceramic Turning Insert CNMA432 Tin

Product Description

The HERTEL 8852073 is a ceramic turning insert in the CNMA432 style, designed for high-speed metal cutting operations on CNC and manual lathes. Finished with a Physical Vapor Deposition (PVD) TiN coating, this insert delivers improved surface hardness and wear resistance compared to uncoated ceramic grades. It carries grade designation HP610CA, features an 80-degree diamond shape with a neutral hand orientation, and a corner radius of 0.0312 inches. The insert thickness is 0.1875 inches, and the inscribed circle measures 0.5 inches. Licensed machinists and CNC operators working in production turning environments are the primary installers of this insert.

This insert is suited for finish and semi-finish turning of hardened steels, cast iron, and superalloys where elevated cutting speeds and thermal resistance are required. The CNMA style is a negative-rake, clamp-and-pin held geometry compatible with standard CNMA toolholders. The chip breaker designation A and the 0.0312-inch corner radius make it appropriate for light to moderate depth-of-cut passes where edge geometry and surface finish are priorities.

Key Features

• Ceramic insert material with PVD TiN coating for extended tool life at elevated temperatures
• HP610CA manufacturer grade optimized for hard turning and cast iron applications
• 80-degree diamond insert shape (CNMA style) with neutral hand for versatile toolholder compatibility
• 0.0312-inch corner radius for controlled surface finish in light to moderate cuts
• Negative rake geometry with clamp and pin holding method for secure, rigid seating
• Insert size code 432 with 0.5-inch inscribed circle and 0.1875-inch thickness

Compatibility

Designed as an OEM-style replacement for standard CNMA432 toolholders using clamp-and-pin insert retention, consistent with ISO and ANSI designations for negative-rake diamond-style turning inserts.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Ensure the toolholder seat and clamp surfaces are clean and free of chips before seating the insert. Use the correct torque wrench and manufacturer-specified hardware for the clamp and pin to avoid insert fracture or improper seating.