Hertel H00208173 Boring Insert Tpgt Solid Carbide

Product Description

The HERTEL H00208173 is a solid carbide, uncoated boring insert in the TPGT style, designed for precision internal boring operations on CNC and manual turning centers. The triangular 60-degree included angle geometry suits general-purpose profiling and finishing cuts. At 0.007 inches corner radius and a 3/32-inch thickness, this insert is built for light to medium material removal where tight tolerances and fine surface finishes are required. The HT540B grade and HF2 chipbreaker designation target controlled chip formation in ferrous and non-ferrous materials. Machining professionals, toolroom operators, and CNC programmers specify this insert for applications demanding consistent dimensional accuracy and repeatable tool life.

This insert is suited for internal boring, light turning, and finishing operations on conventional and CNC lathes. The TPGT insert style with screw-in holding method fits standard TPGT-compatible boring bar holders. Applications include precision bores in steel, cast iron, and similar materials where the uncoated solid carbide substrate performs reliably. The 11-degree relief angle reduces cutting edge friction and suits finishing passes on close-tolerance bores in production and jobshop environments.

Key Features

• Solid carbide substrate, uncoated for direct edge sharpness on ferrous and non-ferrous workpieces
• TPGT insert style with screw-in holding method for secure, repeatable seating in compatible boring bars
• 60-degree triangular shape with 11-degree relief angle for reduced cutting friction on finish passes
• HF2 chipbreaker geometry promotes controlled chip evacuation during light to medium boring cuts
• HT540B manufacturer grade for consistent grade-to-grade tool life across production runs
• 0.007 inches corner radius suited to fine surface finish requirements

Compatibility

Designed as a direct-fit replacement for TPGT21.50.5HF2-style screw-in boring insert holders accepting a 1/4-inch inscribed circle TPGT insert with a 3/32-inch thickness.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before changing inserts. Seat the insert fully against the pocket locating surfaces before tightening the clamping screw to avoid micro-movement under cutting loads. Inspect the insert pocket and seating surfaces for chips or debris prior to installation to ensure proper contact and runout control.