Kennametal 4042891 Indexable Drill Insert KCPK10 Carbide

Product Description

The KENNAMETAL 4042891 is a solid carbide indexable drill insert designed for use in indexable insert drills in demanding metal-cutting applications. Manufactured in the SPPX insert style with an MD chipbreaker, this insert carries the KCPK10 grade designation and features a CVD-applied dual-layer coating of TiCN and Al2O3 for wear resistance and thermal stability. The inscribed circle measures 0.369 inches, thickness is 0.1563 inches, and the corner radius is 0.039 inches. The insert size designation is 09T310. It is installed by machinists and toolroom technicians working with CNC or manual drilling equipment on steel, cast iron, and similar workpiece materials.

This insert is suited for indexable drill toolholders that accept SPPX-style inserts. Typical applications include through-hole and blind-hole drilling in production machining environments, both in job shop and high-volume manufacturing settings. The MD chipbreaker geometry is optimized for controlled chip formation across a range of feed rates. The hole diameter for the insert mounting fastener is 0.1417 inches. This insert is sold individually, with a minimum order quantity of 10 pieces per order.

Key Features

• SPPX insert style with MD chipbreaker geometry for controlled chip evacuation
• KCPK10 grade solid carbide substrate with CVD TiCN and Al2O3 dual-layer coating
• Inscribed circle of 0.369 inches and insert size designation 09T310
• Corner radius of 0.039 inches for defined edge geometry
• Mounting hole diameter of 0.1417 inches for secure seating in compatible toolholders
• Lightweight at 0.01 pounds per insert, minimizing toolholder load

Compatibility

Designed for use in indexable drill toolholders accepting SPPX-style inserts. Consult the toolholder manufacturer specifications to confirm insert size 09T310 fitment before installation.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and de-energize the machine spindle before indexing or replacing inserts. Use the correct torx or hex key specified by the toolholder manufacturer to seat the clamping screw to the proper torque — do not overtighten or use impact tools on insert screws. Inspect the insert pocket and locating surfaces for chips or debris before seating the new insert to ensure proper support and runout.