Hertel H59873513 Boring Insert 60 Degree Triangle HC620B

Product Description

The HERTEL H59873513 is a solid carbide boring insert designed for precision internal turning and boring operations on CNC and manual machine tool setups. Manufactured to insert style TDHB with size code 1.280.752, this insert features a 60-degree triangular geometry with a 15-degree relief angle, providing clearance and edge stability in moderate to aggressive boring passes. The CVD multi-layer coating sequence of TiN, TiC, TiCN, and TiN delivers wear resistance and thermal protection suited to ferrous and cast-iron workpiece materials at material grade C7. Screw-style clamping holds the insert securely in compatible TDHB boring toolholders during high-cycle production use.

This insert is used in precision boring applications across manufacturing, tool-and-die, and general machining environments. It is appropriate for residential job shops and commercial production facilities running internal diameter finishing and semi-finishing operations. The triangular shape provides three usable cutting edges, reducing per-edge tooling cost on repeat boring programs. Installers and machinists working with CNC turning centers or manual boring bars will find the screw-mount holding method straightforward to index and replace. Minimum order quantity is 10 units; each package contains 1 insert.

Key Features

• Solid carbide substrate at material grade C7 for rigidity and edge integrity in boring operations
• CVD-applied multi-layer coating: TiN, TiC, TiCN, TiN for extended wear life and thermal resistance
• 60-degree triangular shape with three usable cutting edges per insert
• 15-degree relief angle provides clearance in tight-bore and interrupted-cut scenarios
• 1/32 inch (0.0310 inch) corner radius for controlled surface finish on internal diameters
• Screw-style insert holding method for positive location and repeatable indexing

Compatibility

Designed for use in TDHB-style boring toolholders accepting inserts with size code 1.280.752, a 5/32 inch inscribed circle, and screw-mount clamping. Verify toolholder pocket geometry and clamping screw size before installation.

Installation Notes

Insert indexing and replacement should be performed by a qualified machinist or tooling technician with the machine in a powered-down, locked-out state per applicable OSHA lockout/tagout procedures. Use the correct torque wrench and clamping screw specified by the toolholder manufacturer — do not overtighten, as solid carbide inserts are brittle and may fracture under excessive clamping load. Inspect the toolholder pocket seating surface for chips or damage before seating the new insert. Follow the machine tool manufacturer guidelines for feed, speed, and depth-of-cut recommendations appropriate to the workpiece material and bore diameter.