Hertel 4006156 Indexable Drill Insert Hpmtgp HP130D

Product Description

The HERTEL 4006156 is a solid carbide indexable drill insert designed for high-performance drilling operations in metal-cutting applications. Manufactured to HPMT insert style with a diamond (80-degree included angle) geometry, this insert features a GP chipbreaker and a neutral cutting direction. The PVD-applied dual coating - TiAlN and AlCrN - provides heat resistance and extended tool life in ferrous and difficult-to-machine materials. At 0.3780 inches inscribed circle and 0.1772 inches thick, it is a compact, precision-ground insert suited for indexable drill bodies requiring HPMT-style seating. Licensed machinists and CNC operators working in production or job-shop environments are the primary installers.

This insert is applied in indexable drill tooling used on CNC machining centers, turning centers with live tooling, and manual boring mills. The 0.80 mm corner radius (0.0315 inches) makes it appropriate for applications where moderate edge strength is needed without sacrificing surface finish. The GP chipbreaker geometry handles a range of feed rates and chip evacuation demands common in through-hole and blind-hole drilling in steel, cast iron, and similar workpiece materials. It is sold individually with a minimum order quantity of 10 units.

Key Features

• Solid carbide construction with PVD-applied TiAlN and AlCrN dual coating for thermal and wear resistance
• 80-degree diamond insert shape with GP chipbreaker for controlled chip formation
• 0.3780-inch (9.60 mm) inscribed circle with neutral cutting direction
• 0.80 mm (0.0315-inch) corner radius balances edge strength and surface finish
• 11-degree relief angle reduces cutting forces and improves clearance
• 4.00 mm (0.1575-inch) mounting hole diameter for positive clamping in HPMT-style drill bodies

Compatibility

Designed as an OEM-style replacement insert for indexable drill bodies requiring HPMT insert style geometry with an 80-degree diamond shape and GP chipbreaker designation.

Installation Notes

Installation is performed by machinists or CNC tooling technicians. The machine spindle must be fully stopped and locked out before indexing or replacing inserts. Use the appropriate torx or hex key to the drill body manufacturer's specified seating procedure - do not overtighten the clamping screw. Inspect the insert pocket for chips or debris before seating the new insert to ensure proper contact and runout accuracy.