Hertel H59873489 Boring Insert Triangle Solid Carbide

Product Description

The HERTEL H59873489 is a solid carbide boring insert designed for precision internal boring operations on CNC and manual machining equipment. Manufactured to the TDHB insert style with a triangular 60-degree included angle, this insert carries a material grade of C1 and comes uncoated, making it well suited for applications where coating is not required or where the base carbide edge retention is the priority. Key geometry specifications include a 5/32-inch inscribed circle (0.1600 inch decimal), a thickness of 3/64 inch (0.0469 inch decimal), a 1/64-inch corner radius (0.0150 inch decimal), and a 15-degree relief angle. It is held in the toolholder via screw-mount clamping.

This insert is used in boring operations across general machining environments, including job shops and production facilities handling ferrous and non-ferrous workpiece materials. The C1 carbide grade and uncoated finish make it a straightforward choice for lighter cuts and finish boring passes where edge sharpness and dimensional consistency are critical. Machinists and toolroom technicians working with standard boring bars that accept TDHB-style screw-on triangular inserts will find this insert applicable to their setups. It is sold individually and subject to a minimum order quantity of 10 units.

Key Features

• Solid carbide construction, material grade C1, uncoated finish
• Triangular shape with 60-degree included angle for versatile boring geometry
• 15-degree relief angle supports clean cutting action and reduced rubbing
• 1/64-inch corner radius (0.0150 inch) for controlled surface finish
• Screw-mount insert holding method for secure seating in compatible toolholders
• Compact geometry: 5/32-inch inscribed circle, 3/64-inch thickness

Compatibility

Designed as an OEM-style replacement or direct-use boring insert for toolholders accepting TDHB-style triangular screw-clamp inserts with a 5/32-inch inscribed circle and 3/64-inch thickness.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician with the machine powered down and all axes locked out before insert changeout. Use the appropriate torque screwdriver or insert wrench for the clamping screw to avoid stripping the seat or over-stressing the carbide. Inspect the insert pocket and clamping screw for wear or debris before seating the insert. Verify insert orientation and relief angle alignment against the toolholder specification before returning the tool to service.