Hertel H59873117 Boring Insert Diamond Tin Solid Carbide

Product Description

The HERTEL H59873117 is a solid carbide boring insert designed for precision internal boring operations on CNC and manual machine tools. Built to CDHH style with an 80-degree diamond shape, this insert features a Physical Vapor Deposition (PVD) TiN coating over a C5 carbide grade substrate, improving wear resistance and tool life on steel and cast iron applications. Key dimensional specs include a 5/32-inch inscribed circle (0.1560 inches), a 0.0400-inch thickness, and a 0.0070-inch corner radius. The 15-degree relief angle reduces rubbing and supports clean chip clearance in tight bore profiles. Installation requires a screw-type insert holder. Each package contains one insert; minimum order quantity is 10 pieces.

This insert is suited for finish and semi-finish boring in production environments where consistent dimensional accuracy is required. The right-hand cutting geometry and diamond shape make it a standard choice for internal diameter work on lathes and boring mills. The HP520B manufacturer grade targets applications in ferrous machining where surface finish and edge integrity are priorities. Machinists and tooling specialists in production shops, job shops, and maintenance machining operations will recognize this as a direct-drop replacement insert for compatible CDHH-style screw-on boring holders.

Key Features

• 80-degree diamond (CDHH) insert style with right-hand cutting orientation
• Solid carbide construction, C5 grade, with PVD TiN coating for extended tool life
• 0.0070-inch corner radius for controlled surface finish in finish boring passes
• 15-degree relief angle reduces flank contact and supports clean chip evacuation
• Screw-clamp insert holding method compatible with standard CDHH toolholders
• Manufacturer grade HP520B optimized for ferrous and general-purpose boring

Compatibility

Designed as an OEM-style replacement insert for screw-type CDHH-style boring toolholders accepting a 5/32-inch inscribed circle diamond insert.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and lock out the machine spindle before changing inserts. Use the correct torx or hex key for the clamping screw and do not overtighten, as carbide inserts are brittle and will crack under excessive clamp force. Inspect the insert pocket seat for chips or debris before seating the new insert to ensure proper contact and accurate cutting geometry.