Hertel H48442073 Boring Insert WPHT21.51 Solid Carbide

Product Description

The HERTEL H48442073 is a solid carbide boring insert designed for precision internal machining operations. Carrying the WPHT insert style in size 21.51 and manufactured to the HT540B grade, this uncoated trigon insert is built for rigid boring applications where tight tolerances and consistent cutting performance are required. The insert features an 80-degree included angle, a 1/4-inch inscribed circle (0.2500 inches), and a thickness of 3/32 inches (0.0938 inches). A corner radius of 1/64 inches (0.0150 inches) and an 11-degree relief angle support clean cutting action on a range of workpiece materials. Machining professionals and toolroom technicians select this insert for its dimensional consistency and carbide substrate integrity.

This insert is suited for boring operations on lathes and machining centers in production and job-shop environments. The WPHT style and screw-holding method make it compatible with standard boring bar systems designed for trigon inserts. The uncoated solid carbide construction is appropriate for applications where coating is not required or where the operator prefers to run the insert as-ground. Typical users include CNC machinists, toolroom operators, and manufacturing technicians working in metalworking and precision machining environments.

Key Features

• Solid carbide substrate in material grade C1 for consistent hardness and wear resistance
• Uncoated finish suitable for applications where an as-ground edge is preferred
• 80-degree trigon (WPHT) shape with 11-degree relief angle for efficient chip clearance
• 1/64-inch corner radius (0.0150 inches) for controlled surface finish in boring operations
• Screw-holding method for positive insert retention in compatible boring bar holders
• Sold individually; minimum order quantity of 10 units

Compatibility

Designed for use in boring bar systems and toolholders configured for WPHT-style trigon inserts with a 1/4-inch inscribed circle and screw-clamping retention.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician familiar with indexable insert tooling. Power down and lock out the machine before changing inserts. Use the appropriate torque screwdriver specified by the boring bar manufacturer when securing the clamping screw — do not over-torque. Inspect the insert seat and clamping screw for wear or debris before seating the new insert.