Hertel H59873075 Boring Insert Cdhh 80 Diamond Tin Coated

Product Description

The HERTEL H59873075 is a solid carbide boring insert designed for precision internal boring operations on CNC lathes and machining centers. Built to CDHH style with an 80-degree diamond shape, it features a Physical Vapor Deposition (PVD) TiN coating over a C5 carbide grade substrate, providing wear resistance and extended tool life in ferrous and non-ferrous materials. Key geometry specs include a 0.007 inch corner radius, a 5/32 inch (0.1560 inch) inscribed circle, a 0.0400 inch thickness, and a 15-degree relief angle. This insert is screw-held and configured for left-hand cutting. It is installed by machinists and tool-room technicians in production and job-shop environments.

This insert suits light to medium-duty boring applications where tight tolerances and surface finish are priorities. The CDHH style and 80-degree included angle make it effective for general-purpose turning and boring passes in steel, cast iron, and similar workpiece materials. The left-hand configuration is required for specific toolholder orientations where conventional right-hand inserts cannot be used. It is sold individually but requires a minimum order quantity of 10 units, making it appropriate for shop stock replenishment and toolcrib management.

Key Features

• CDHH insert style with 80-degree diamond geometry for general boring and turning applications
• PVD TiN coating over C5 solid carbide substrate for wear resistance and edge retention
• 0.007 inch corner radius suitable for finish and semi-finish boring passes
• 15-degree relief angle reduces rubbing and improves tool clearance in bore entry
• Left-hand cutting configuration for compatible left-hand toolholders
• Screw-held insert retention for secure seating and repeatable indexing

Compatibility

Designed for use in CDHH-style boring toolholders that accept a 5/32 inch inscribed circle insert with screw-clamp retention. Verify toolholder hand orientation before ordering, as this insert is left-hand only.

Installation Notes

Installation is performed by qualified machinists or tool-room technicians. Always power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque driver for the screw-clamp fastener per the toolholder manufacturer specification. Inspect the insert pocket for debris or wear before seating a new insert, and confirm insert hand matches the toolholder hand before beginning a cut.