Hertel 4006189 Indexable Drill Insert Hpmtgp HP130D

Product Description

The HERTEL 4006189 is a solid carbide indexable drill insert designed for precision drilling operations in metalworking and machining applications. Featuring an HPMTGP insert style with an 80-degree diamond shape, this insert is PVD-coated with a TiAlN and AlCrN dual-coating system that provides excellent heat resistance and wear protection at elevated cutting speeds. The inscribed circle measures 15.20 mm (0.5984 inches) and the insert thickness is 0.2677 inches, with a corner radius of 1.20 mm (0.0472 inches). A relief angle of 11 degrees and a neutral cutting direction make this insert suitable for a range of hole-making operations. Machinists and tooling technicians working in production or job-shop environments install and index this insert as part of an indexable drill tooling system.

This insert is intended for use in indexable drill bodies that accept HPMT-style inserts. The GP chipbreaker geometry supports general-purpose drilling across a variety of workpiece materials where consistent chip control and dimensional accuracy are required. The insert hole diameter is 6.50 mm (0.2559 inches), corresponding to standard HPMT insert seat fastener sizing. Applications include through-hole and blind-hole drilling in steel, cast iron, and similar ferrous materials in both manual and CNC machining setups. The HP130D grade designation identifies the carbide substrate and coating combination engineered for this class of cutting work.

Key Features

• Solid carbide substrate with PVD-applied TiAlN and AlCrN dual-layer coating for extended tool life
• 80-degree diamond (HPMT) insert shape with GP chipbreaker for general-purpose drilling
• 15.20 mm inscribed circle and 0.2677-inch thickness for precise seat fit
• 1.20 mm corner radius (0.0472 inches) for controlled edge geometry
• 11-degree relief angle with neutral cutting direction
• 6.50 mm mounting hole diameter compatible with standard HPMT clamping hardware

Compatibility

Designed as an OEM-style replacement or direct-use insert for indexable drill bodies accepting HPMT-style solid carbide inserts with an 80-degree diamond shape and HPMTGP seat geometry.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and lock out the machine before indexing or replacing inserts. Use the manufacturer-specified torx or hex key for the insert clamping screw to ensure proper seating without over-torquing. Inspect the insert pocket and seating surface for chips or debris before installing a new insert.