Hertel H05095047 Boring Insert WPMT32.51GP HP520B

Product Description

The HERTEL H05095047 is a solid carbide boring insert designed for precision internal turning and boring operations on CNC and manual lathes. Manufactured in the WPMT style with an 80-degree trigon shape, this insert carries a TiN (titanium nitride) coating applied via PVD process, which extends cutting-edge life and reduces built-up edge on ferrous materials. Key dimensional specs include a 3/8-inch inscribed circle (0.3750 inches), a 3/32-inch thickness (0.0938 inches), and a 1/64-inch corner radius (0.0150 inches). The 11-degree relief angle and GP chipbreaker geometry suit general-purpose boring where controlled chip evacuation is required. Machinist-grade C5 carbide substrate supports cuts in steel and cast iron at moderate to high speeds.

This insert is suited for production and job-shop boring applications in residential and commercial machine shops, toolrooms, and manufacturing facilities. The WPMT insert style is commonly used in small-diameter boring bars and modular tooling systems. The HP520B manufacturer grade targets general-purpose steel and cast iron cutting where a PVD-TiN coated carbide grade delivers a balance of toughness and wear resistance. Machinists and CNC operators performing internal diameter finishing and semi-finishing work will find the GP chipbreaker geometry effective for maintaining chip control at moderate feed rates.

Key Features

• Solid carbide substrate with C5 material grade for wear resistance in steel and cast iron
• TiN coating via PVD process reduces built-up edge and extends tool life
• 80-degree trigon (WPMT) insert shape provides two usable cutting edges
• GP chipbreaker geometry promotes controlled chip evacuation in general-purpose boring
• 1/64-inch (0.0150 inches) corner radius suits semi-finishing and finishing passes
• Screw-lock insert holding method ensures secure seating in compatible boring bar pockets

Compatibility

Designed as an OEM-style replacement or production insert for boring bars and toolholders accepting WPMT-style inserts with a 3/8-inch inscribed circle and screw-lock holding method.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician with the machine powered off and the spindle fully stopped before changing inserts. Use the appropriate Torx or hex key to seat the clamping screw to the toolholder manufacturer's specified torque; do not overtighten, as this can fracture the carbide insert. Inspect the insert pocket seat and clamping screw for wear or debris before seating a new insert. Follow applicable shop safety procedures and machine tool manufacturer guidelines when indexing or replacing cutting inserts.