Hertel 4006154 Indexable Drill Insert Hpmtgp HP130D

Product Description

The HERTEL 4006154 is a solid carbide indexable drill insert designed for use in indexable insert drills in demanding metal-cutting applications. It features an 80-degree diamond shape with a HPMTGP chipbreaker geometry and a neutral cutting direction, making it suited for general-purpose drilling operations in steel and similar workpiece materials. The insert carries a dual PVD coating of TiAlN and AlCrN for improved wear resistance and heat management at the cutting edge. With an inscribed circle of 0.1654 inches (4.20 mm) and a corner radius of 0.0157 inches (0.40 mm), this insert delivers precise, consistent cutting geometry on each index. It is installed by machinists and tool-room technicians working in CNC machining centers, drill presses, and turning centers equipped with compatible indexable drill bodies.

This insert is intended for indexable drill tooling requiring an HPMT-style insert seat. It suits general-purpose drilling operations in production machining environments, including job shops and manufacturing facilities running ferrous and non-ferrous metals. The HPMTGP chipbreaker promotes effective chip evacuation during through-hole and blind-hole drilling cycles. The insert size designation is 042004, and the manufacturer grade is HP130D. Applications include high-volume drilling runs where insert indexability reduces downtime compared to regrindable tooling.

Key Features

• Solid carbide substrate for rigidity and wear resistance in interrupted and continuous drilling cuts
• Dual PVD coating (TiAlN and AlCrN) provides thermal and oxidation resistance at elevated cutting speeds
• 80-degree diamond insert shape with HPMTGP chipbreaker for controlled chip formation
• Neutral cutting direction suits standard drill body orientations without left- or right-hand designation
• 11-degree relief angle supports clearance behind the cutting edge and reduces flank wear
• Corner radius of 0.0157 inches (0.40 mm) balances edge strength and surface finish quality

Compatibility

Designed as an OEM-style replacement insert for indexable drill bodies requiring an HPMT insert style with an 042004 insert size designation and a mounting hole diameter of 0.0709 inches (1.80 mm).

Installation Notes

Insert installation and indexing should be performed by a qualified machinist or toolroom technician with the spindle fully stopped and machine power locked out per shop lockout/tagout procedures. Use the correct torx or hex key specified by the drill body manufacturer to seat and torque the clamp screw - do not over-tighten, as solid carbide inserts are brittle and susceptible to fracture under excessive clamping force. Inspect the insert pocket and seating surfaces for chips or debris before seating the new insert. Verify insert orientation and cutting direction before resuming machining operations.