Hertel H59872804 Boring Insert Diamond 80 Deg Solid Carbide

Product Description

The HERTEL H59872804 is a solid carbide boring insert designed for precision internal boring operations on CNC and manual turning equipment. Configured in the CDHB insert style with an 80-degree diamond shape, this insert is manufactured from uncoated solid carbide grade HT310B, which corresponds to the C25 material classification. It features a 0.002-inch corner radius, a 5/32-inch (0.1563-inch) inscribed circle, a thickness of 0.04 inches, and a 15-degree relief angle. The screw-holding method provides secure clamping rigidity during interrupted and continuous boring cuts. This insert is specified and installed by machinists and toolroom technicians working in metalcutting environments.

This insert is suited for internal diameter boring applications requiring tight tolerances and sharp geometry. The 80-degree diamond shape and 15-degree relief angle make it appropriate for finish and semi-finish boring passes in steel and similar ferrous materials. The uncoated carbide construction is typically selected for applications where coating buildup could affect dimensional accuracy, such as light-duty finishing cuts or situations requiring a sharp, honed cutting edge. It is installed in compatible CDHB-style boring bar holders that accept this insert size code 1.20.60.1.

Key Features

• 80-degree diamond insert shape for versatile boring and turning geometry
• Solid carbide construction, grade HT310B (C25 classification), for wear resistance and edge integrity
• 0.002-inch corner radius for precision finish boring applications
• 15-degree relief angle reduces flank contact and supports clean cutting action
• Screw insert holding method for positive, repeatable clamping in the toolholder
• Uncoated finish preserves sharp edge geometry for fine tolerance work

Compatibility

Designed as a replacement or production-use boring insert for CDHB-style insert toolholders accepting insert size code 1.20.60.1 with a 5/32-inch inscribed circle.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Power down and lock out the machine spindle before seating or replacing inserts. Use the appropriate Torx or hex key to engage the clamping screw - do not overtighten or substitute fasteners. Inspect the insert pocket and clamping screw for wear or debris before seating a new insert to ensure full, flat seating against the pocket surfaces.