Hertel H59873083 Boring Insert Diamond Solid Carbide HC620B

Product Description

The HERTEL H59873083 is a solid carbide boring insert designed for precision metal-cutting operations on CNC and manual boring equipment. Manufactured to insert style CDHH with a diamond (80-degree included angle) shape, this insert carries the HC620B grade designation and is produced via CVD coating with a multilayer TiN, TiC, TiCN, TiN finish for extended wear resistance and heat tolerance. It features a 0.007-inch corner radius, a 5/32-inch (0.1563-inch) inscribed circle diameter, and a 0.040-inch thickness. The 15-degree relief angle supports clean chip clearance in fine-bore finishing passes. Installed by machinists and toolroom technicians, it is secured via screw-holding in a compatible CDHH-style boring bar or cartridge.

This insert is suited for precision boring applications in ferrous metals and cast materials where a C7 carbide material grade is appropriate. The left-hand designation makes it specific to left-hand boring bar setups. It is commonly used in production environments requiring tight diameter tolerances and consistent surface finish in internal bore operations. Insert size code 1.20.60.5 should be confirmed against the boring bar or cartridge specification before ordering.

Key Features

• 80-degree diamond shape with 15-degree relief angle for precise boring geometry
• Solid carbide substrate, material grade C7, manufacturer grade HC620B
• CVD multilayer coating: TiN, TiC, TiCN, TiN for wear and thermal resistance
• 0.007-inch corner radius for fine finishing passes
• 5/32-inch (0.1563-inch) inscribed circle diameter
• Screw-hold mounting, left-hand orientation

Compatibility

Designed for use in CDHH-style boring bars and cartridges requiring a left-hand insert with insert size code 1.20.60.5 and a 5/32-inch inscribed circle. Confirm bar and cartridge specifications before installation.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Power down and lock out the machine spindle before seating or replacing inserts. Use the correct torque driver for the screw-clamp fastener to avoid cracking the carbide substrate - do not overtighten by hand or with an unapproved tool. Verify insert orientation (left-hand) and seating pocket condition before resuming cutting operations.