Kennametal 4042935 Indexable Drill Insert Spgxhp KCU40

Product Description

The KENNAMETAL 4042935 is a solid carbide indexable drill insert in the SPGXHP style, designed for use in indexable insert drills operating in demanding metal-cutting applications. Manufactured to the KCU40 grade and PVD-coated with a TiN and TiAlN multilayer finish, this insert delivers strong wear resistance and thermal stability at the cutting edge. The insert features a 0.307-inch inscribed circle, a thickness of 0.1252 inches, a corner radius of 0.0313 inches, and a hole diameter of 0.112 inches. It is installed by machinists and toolroom technicians working with CNC or manual drilling operations where precision and insert consistency are critical.

This insert is suited for production drilling in steel, cast iron, and similar ferrous workpiece materials where PVD-coated carbide grades perform reliably. The HP chipbreaker geometry is optimized for controlled chip formation during through-hole and blind-hole drilling operations. It is a single-piece consumable item typically purchased in minimum quantities for tooling replenishment programs in job shops, production facilities, and maintenance operations.

Key Features

• SPGXHP insert style with HP chipbreaker for controlled chip evacuation during drilling
• KCU40 solid carbide grade with PVD-applied TiN and TiAlN coating for wear resistance and heat management
• 0.307-inch inscribed circle and 0.1252-inch thickness for precise seating in compatible drill bodies
• 0.0313-inch corner radius reduces stress concentration at the cutting edge
• 0.112-inch hole diameter for secure mechanical clamping in the insert pocket
• Lightweight at 0.005 pounds, consistent with tight dimensional tolerances expected in precision tooling inserts

Compatibility

Designed as an OEM-style replacement insert for indexable drill bodies accepting SPGX-style inserts with a 0.307-inch inscribed circle and corresponding pocket geometry. Verify insert size designation 070308 and pocket specifications against the drill body manufacturer documentation before installation.

Installation Notes

Installation should be performed by qualified machinists or tooling technicians. Ensure the drill body and insert pocket are clean and free of chips or debris before seating the insert. Torque the clamping screw according to the drill body manufacturer specification using a calibrated torque driver — do not overtighten. Inspect the insert for seating and edge integrity before resuming cutting operations.