Kennametal 4042904 Indexable Drill Insert Sppxmd KCPK10

Product Description

The KENNAMETAL 4042904 is a solid carbide indexable drill insert designed for precision hole-making operations in machining environments. Manufactured in the SPPX insert style with an MD chipbreaker, this insert carries the KCPK10 grade and a CVD-applied TiCN plus Al2O3 coating for high wear resistance and thermal stability. The inscribed circle measures 0.494 inches with a thickness of 0.1875 inches and a corner radius of 0.0469 inches. It is intended for installation in compatible indexable drill bodies and is typically fitted by machinists and CNC operators in production or job-shop settings.

This insert is suited for drilling applications in ferrous and alloy workpiece materials where coating durability and edge retention are critical. The MD chipbreaker geometry promotes effective chip control across a range of feed rates and cutting depths. Applications span general-purpose drilling on CNC machining centers and lathes with live tooling in both high-volume production and precision component work. The KCPK10 grade with CVD TiCN and Al2O3 multilayer coating is well matched to steel and cast iron drilling at moderate to high cutting speeds.

Key Features

• SPPX insert style with MD chipbreaker for controlled chip evacuation
• CVD-applied TiCN plus Al2O3 multilayer coating for wear and thermal resistance
• 0.494 inch inscribed circle with 0.0469 inch corner radius for defined edge geometry
• Solid carbide substrate in manufacturer grade KCPK10
• Insert size designation 120412 for toolholder compatibility reference
• Hole diameter of 0.1811 inches for mounting in the drill body pocket

Compatibility

Designed as an OEM-style replacement or direct-fit indexable insert for drill bodies accepting SPPX-style inserts with an insert size designation of 120412.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician with the spindle fully powered down and the machine in a locked-out state per applicable machine safety procedures. Seating surfaces on the drill body pocket should be cleaned of chips and debris before installing the insert. Use the appropriate torx or hex wrench to torque the clamping screw to the drill body manufacturer specification — do not over-torque or substitute fasteners. Inspect the insert and pocket for seating contact before returning the tool to service.