Hertel H59873729 Boring Insert 60 Triangle Solid Carbide

Product Description

The HERTEL H59873729 is a solid carbide boring insert designed for precision internal turning and boring operations on CNC and manual lathes. This triangular insert features a 60-degree included angle and a CVD-applied multilayer coating of TiN, TiC, TiCN, and TiN, which provides thermal resistance and wear protection across a wide range of workpiece materials. With a 0.007 inch corner radius and an inscribed circle diameter of 0.160 inches, this insert is suited for finishing and semi-finishing passes where dimensional accuracy and surface finish are critical. It carries a material grade of C7, making it appropriate for machining cast iron and nonferrous materials. Installation is performed by licensed machinists and toolroom technicians using standard screw-clamp toolholders.

This insert is intended for right-hand boring bar applications in production and job-shop environments. The TDHH insert style and 15-degree relief angle provide adequate clearance for internal diameter work in tight-bore conditions. The CVD multilayer coating extends tool life compared to uncoated carbide when cutting abrasive or high-temperature materials. Typical applications include finish boring of cast iron housings, pump bodies, and similar components where consistent hole geometry is required. Sold individually per package with a minimum order quantity of 10 pieces.

Key Features

• Solid carbide substrate with CVD multilayer coating: TiN / TiC / TiCN / TiN for extended wear resistance
• 60-degree triangular shape with 15-degree relief angle for positive clearance in boring applications
• 0.007 inch corner radius for semi-finish to finish cutting passes
• Inscribed circle diameter of 0.160 inches (5/32 inches) for compact boring bar compatibility
• Screw-clamp insert holding method ensures secure, repeatable seating
• Right-hand cutting orientation; C7 material grade suitable for cast iron and nonferrous workpieces

Compatibility

Designed as a screw-clamp replacement boring insert for TDHH-style right-hand boring bars and toolholders accepting a triangular insert with a 5/32 inch inscribed circle. Manufacturer catalog number TDHH12807505R. Verify toolholder pocket geometry and insert seat dimensions before installation.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Disengage the machine spindle and confirm the machine is in a locked-out, zero-energy state before changing inserts. Use the correct torx or hex key to tighten the clamping screw to toolholder manufacturer specifications. Inspect the insert pocket and clamping screw for wear or debris before seating a new insert to ensure proper contact and prevent premature edge failure.