Kennametal 1806437 Indexable Drill Insert Dfrgd KC7140

Product Description

The KENNAMETAL 1806437 is a solid carbide indexable drill insert designed for use in indexable drilling operations on CNC machining centers and drill presses. Featuring the DFRGD insert style with a GD chipbreaker and KC7140 manufacturer grade, this insert is PVD-coated with TiN and TiCN layers to extend tool life and improve wear resistance in demanding cutting applications. It carries a 0.315-inch inscribed circle, a thickness of 0.1492 inches, and a corner radius of 0.40 mm (0.0157 inches). The insert size designation is 040304. Machinists, tooling specialists, and CNC operators working in metalcutting environments install this insert as part of a modular indexable drill body system.

This insert is suited for machining operations involving materials classified under C5 and C6 material grades, which correspond to general steel, cast iron, and harder workpiece materials. The GD chipbreaker geometry promotes effective chip evacuation at moderate to high feed rates. Typical applications include production drilling in job shops, aerospace component manufacturing, and general metalworking facilities where indexable tooling is preferred over solid-shank drills for cost efficiency and repeatability. The 0.1122-inch hole diameter accepts standard insert-retaining screws used in compatible drill bodies.

Key Features

• DFRGD insert style with GD chipbreaker for controlled chip formation
• KC7140 grade with PVD-applied TiN and TiCN coating for wear resistance
• 0.315-inch inscribed circle and 040304 insert size designation
• 0.40 mm corner radius for edge strength and surface finish
• Compatible with C5 and C6 material grade workpieces including steel and cast iron
• Solid carbide substrate for rigidity in high-feed drilling applications

Compatibility

Designed as an OEM-style indexable drill insert for use in compatible KENNAMETAL indexable drill body systems that accept the DFRGD insert style and 040304 insert size. Verify drill body compatibility using the insert style, inscribed circle, and hole diameter before installation.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Power down and lock out the machine before seating or removing inserts. Use the correct torx or hex key to engage the retaining screw to the drill body manufacturer's recommended procedure - do not overtighten by feel alone. Inspect the insert pocket for chips or damage before seating the new insert to ensure proper seating and runout.