Hertel H59872937 Boring Insert 80 Diamond Solid Carbide HC620B

Product Description

The HERTEL H59872937 is a solid carbide boring insert designed for precision metal cutting in boring operations. Manufactured to the CDHH insert style with an 80-degree diamond shape, this insert is built for rigidity and accurate material removal. It carries the HC620B manufacturer grade with a C7 material grade designation, making it well-suited for machining ferrous and non-ferrous materials. The CVD coating sequence of TiN, TiC, TiCN, and TiN layers provides wear resistance and extended tool life in demanding cutting environments. At 0.04 inches thick with a 5/32-inch inscribed circle and a 1/64-inch corner radius, this insert is engineered for tight tolerances in finish and semi-finish boring applications.

This insert is intended for use in precision boring tool holders that accept CDHH-style screw-held inserts. Typical applications include CNC boring operations in production machine shops, tool rooms, and manufacturing environments where consistent diameter control and surface finish are required. The 15-degree relief angle helps reduce cutting forces and minimize rubbing on the bore wall. It is suitable for machining operations requiring a compact insert geometry with a controlled corner radius for fine tolerances.

Key Features

• 80-degree diamond insert shape for rigid, low-vibration boring cuts
• Solid carbide construction with HC620B grade for durability in hard and abrasive materials
• CVD-applied multilayer coating: TiN, TiC, TiCN, TiN for extended wear life
• 1/64-inch corner radius for controlled surface finish in finish boring passes
• 15-degree relief angle reduces cutting friction against bore walls
• Screw-held insert retention for positive clamping and accurate indexing

Compatibility

Designed for use in boring tool holders that accept CDHH-style screw-clamped inserts with a 5/32-inch inscribed circle and 0.04-inch insert thickness.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the boring bar and tool holder are fully de-energized and the machine spindle is locked before indexing or replacing inserts. Use the correct torque wrench and manufacturer-specified clamping screw to seat the insert securely — do not overtighten. Inspect the insert pocket and clamping screw for wear or debris before installation to ensure accurate seating and runout control.